BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Hertfordshire Geological Society - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Hertfordshire Geological Society
X-ORIGINAL-URL:https://www.hertsgeolsoc.org.uk
X-WR-CALDESC:Events for Hertfordshire Geological Society
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
TZNAME:UTC
DTSTART:20210101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=UTC:20230610T100000
DTEND;TZID=UTC:20230610T170000
DTSTAMP:20260404T062229
CREATED:20221027T143202Z
LAST-MODIFIED:20230412T095027Z
UID:9792-1686391200-1686416400@www.hertsgeolsoc.org.uk
SUMMARY:Charnwood Forest
DESCRIPTION:Following interest expressed at the last HGS meeting (Oct) we’ve been in touch with John Carney (ret BGS) and he is willing to lead an HGS trip to Charnwood Forest. \nFor a reasonably compact visit-site\, with all facilities and good scenery\, even Tudor history Bradgate Park provides a great opportunity to potentially find evidence of ancient volcanoes\, igneous intrusions\, earthquakes\, and tsunamis can be found together. We will start at the Hunt’s Hill entrance clearly marked on the Bradgate Park Find Us webpage. \n\n\n\nMore details will be provided in the May Chalk Board. Meet up at Hunters Hill 10:00 – 10:15\, picnic of café for lunch and a selection of great tea shops in Newton Linford to relax at the end of the day. Good paths – undulating walk 5 km. \nTo register for this trip please e-mail nicpierpoint@aol.com
URL:https://www.hertsgeolsoc.org.uk/event/charnwood-forest/
LOCATION:Charnwood Forest\, Charnwood\, LE12 9XJ\, United Kingdom
CATEGORIES:Field Trips
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230608T193000
DTEND;TZID=UTC:20230608T210000
DTSTAMP:20260404T062229
CREATED:20221119T080415Z
LAST-MODIFIED:20230628T105810Z
UID:9882-1686252600-1686258000@www.hertsgeolsoc.org.uk
SUMMARY:The Moine Thrust Controversy
DESCRIPTION:given by Dr. Peter Gutteridge (Director\, Cambridge Carbonates) \nAbstract:\nThe NW Highlands of Scotland probably has the best scenery and geology in the world. You can find the oldest rocks in the British Isles\, the first evidence of life\, ancient landscapes carved out by preCambrian rivers and beautifully exposed Lower Palaeozoic clastic and carbonate sediments. These all form part of a major fold and thrust belt on which the metamorphosed Moine schists were emplaced. \nHowever\, geologist Roderick Impy Murchison saw this as a conformable succession. It is worth asking the question\, why did Victorian geologists so completely miss evidence that is so obvious to geologists today? The answers lie in the state of geological science at the time\, geopolitics and social climbing. Resolution of the Moine thrust controversy was a turning point in the history of geology gave us the foundations of the science of geology as we now know it. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-moine-thrust-controversy/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/11/PG-Moinr--scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230513T103000
DTEND;TZID=UTC:20230513T163000
DTSTAMP:20260404T062229
CREATED:20230320T204434Z
LAST-MODIFIED:20230320T204434Z
UID:10403-1683973800-1683995400@www.hertsgeolsoc.org.uk
SUMMARY:'Puddingstone Peregrination'
DESCRIPTION:Meeting at 10.30 at the ‘Standon Stone’ near the church in Standon village ( O.S. TL 396223 ). Sandwiches and coffee can be picked up at Day’s bakery in the village. Then to the newly discovered ‘William Smith’s HPS mounting block’ mentioned in 1819!! We will then look at HPS boulders at various sites along the A120 to Bishops Stortford. \nIncluding the HPS boulder described by Chris Green now at Hadham Ford (where we will have lunch)\, The Hadham Hall boulder which features in a ‘Work of Art’. The collection of boulders at Wickham Hall\, where we will discuss the erosion and formation of HPS boulders over coffee. \nTo register for this trip please e-mail mehowgate@hotmail.com.
URL:https://www.hertsgeolsoc.org.uk/event/puddingstone-peregrination/
LOCATION:St Mary’s Church\, Standon\, High Street\, Standon\, Hertfordshire\, SG11 1LA\, United Kingdom
CATEGORIES:Field Trips
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2023/03/Screenshot-2023-03-20-at-20.30.24.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230511T193000
DTEND;TZID=UTC:20230511T210000
DTSTAMP:20260404T062229
CREATED:20221119T080243Z
LAST-MODIFIED:20230601T133608Z
UID:9879-1683833400-1683838800@www.hertsgeolsoc.org.uk
SUMMARY:Visions of Nature.  Art\, science and natural history museums
DESCRIPTION:given by Prof. Paul Smith (Director University of Oxford\, Natural History Museum). \nAbstract \n\n\n\nIn an era of polarised opinion and a difficulty in determining the veracity of information\, science museums play an important role as ‘honest brokers’ in both enabling and encouraging public debate around science. Surveys on both side of the Atlantic have demonstrated that museums are amongst the most trusted providers of information\, but first they need audiences to discuss and debate with. \nFor the last few years\, Oxford University Museum of Natural History has been operating an innovative series of exhibitions entitled Contemporary Science & Society. Each exhibition is an interdisciplinary investigation of an aspect of current science research and interweaves the scientific storytelling with related contemporary art that enhances the audience appeal. The exhibition is\, however\, only a starting point for a broader programme of events that range from lectures and debates to more informal science fairs\, art interventions and comedy nights. Audiences for each exhibition range up to 245\,000 and both qualitative and quantitative evaluation show that the content has had the ability to change people’s decision-making and behaviours. \nThe lecture will examine a variety of recent exhibitions\, the range of issues that the exhibition series is seeking to address\, and the role of a natural history museum in modern society. \n\nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/visions-of-nature-art-science-and-natural-history-museums/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/11/e-coli-sculpture-2560x1706-1.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230427T193000
DTEND;TZID=UTC:20230427T210000
DTSTAMP:20260404T062229
CREATED:20221119T171425Z
LAST-MODIFIED:20230505T163818Z
UID:9908-1682623800-1682629200@www.hertsgeolsoc.org.uk
SUMMARY:Percy Evans Lecture: The Norber Erratics
DESCRIPTION:given by Clive Maton (Honorary President\, HGS) \nAbstract\nThe Norber Erratics are well known and are featured in geological text books and numerous local guides to the Yorkshire Dales. This is partially due to their large size\, the very large numbers\, and all being located in a relatively small area; but they are best known for their emplacement on Carboniferous Limestone pedestals.They have been the subject of much study. The first scientific papers were published in the late 19th Century  and many more have described and discussed them in the last 150 years. My study of them started as they were included in the area of my Map & Thesis\, which formed part of my Geology degree\, and I have continued to visit the area for post graduate field work. This\, together with my recent research on the source and flow of the erratics\, form the basis of the lecture.  \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/percy-evans-lecture-the-norber-erratics/
LOCATION:Hartoak Room\, Mansion House\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2023/03/Norber-erratic-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230325T100000
DTEND;TZID=UTC:20230325T163000
DTSTAMP:20260404T062229
CREATED:20230110T201408Z
LAST-MODIFIED:20230110T202138Z
UID:10069-1679738400-1679761800@www.hertsgeolsoc.org.uk
SUMMARY:Building Stone walk in Aylesbury & visit Discover Bucks Museum
DESCRIPTION:Meet outside Aylesbury Waterside Theatre (HP20 1UG) 10:00 for 10:15 departure\n– best parking is in Waterside Multi-Story Car Park (HP20 1AL) on level 2 or 3 \nItinerary \nMorning: 2 1/2 hour walk through the old town centre of Aylesbury \nLunch: at the Kings Head which is owned by the National Trust \nAfternoon: Discover Bucks Museum – in particular the new Geology display \nFinish: mid afternoon 15:30/16:00 \nPlease contact Nick Pierpoint at nicpierpoint@aol.com to reserve a place
URL:https://www.hertsgeolsoc.org.uk/event/building-stone-walk-in-aylesbury-visit-discover-bucks-museum/
LOCATION:Waterside Theatre\, Exchange Street\, Aylesbury\, Hertfordshire\, HP20 1UG
CATEGORIES:Field Trips
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230218T100000
DTEND;TZID=UTC:20230218T160000
DTSTAMP:20260404T062229
CREATED:20220922T124407Z
LAST-MODIFIED:20220922T124407Z
UID:9689-1676714400-1676736000@www.hertsgeolsoc.org.uk
SUMMARY:Little heath Geoconservation Working Party
DESCRIPTION:Annual activity to remove vegetation and clean-up the exposure at Little Heath
URL:https://www.hertsgeolsoc.org.uk/event/little-heath-geoconservation-working-party/
LOCATION:Little Heath\, Potten End\, Potten End\, United Kingdom
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230209T193000
DTEND;TZID=UTC:20230209T210000
DTSTAMP:20260404T062229
CREATED:20230110T203353Z
LAST-MODIFIED:20230209T195948Z
UID:10083-1675971000-1675976400@www.hertsgeolsoc.org.uk
SUMMARY:Clays!
DESCRIPTION:given by Prof. Peter Scott (Emeritus Professor\, Camborne School of Mines\, University of Exeter) \nAbstract:\nClay minerals\, such as kaolinite\, illite and montmorillonite\, are the essential components of clays. Their crystals are very small and they have variable amounts of disorder in their structure. They impart a plasticity to clays. Their properties also make them very useful raw material for industry\, including construction\, ceramics\, paper\, paint\, oil clarification\, metal casting\, cat litter and even high level nuclear waste disposal. This presentation will review the properties of clays and illustrate examples of their geology and uses from the UK and elsewhere. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/clays-2/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2023/01/Bodelva2.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230203T180000
DTEND;TZID=UTC:20230203T193000
DTSTAMP:20260404T062229
CREATED:20230121T123719Z
LAST-MODIFIED:20230121T123719Z
UID:10128-1675447200-1675452600@www.hertsgeolsoc.org.uk
SUMMARY:GA Lecture
DESCRIPTION:Winchcombe meteorite\ngiven by Dr Ashley King (Natural History Museum)
URL:https://www.hertsgeolsoc.org.uk/event/ga-lecture-6/
LOCATION:over Zoom
CATEGORIES:GA Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230112T193000
DTEND;TZID=UTC:20230112T210000
DTSTAMP:20260404T062229
CREATED:20230116T172801Z
LAST-MODIFIED:20230116T172801Z
UID:10114-1673551800-1673557200@www.hertsgeolsoc.org.uk
SUMMARY:Ocean sediments tell the story of Palaeogene environmental change
DESCRIPTION:given by Prof Bridget Wade (Department of Earth Sciences\, University College London) \nAbstract:\nNumerous oceanic\, climatic\, and biotic conditions relating to biogeochemical cycles and environmental change impact the composition and distribution of deep- sea sediments. Utilising the extensive sediment archives of the International Ocean Discovery Program (IODP) and its predecessors\, maps of deep-sea sediment type have been assembled across two critical boundaries in the Paleogene\, one characterised by an interval of extreme warmth (Paleocene/Eocene) and the other by global cooling (Eocene/Oligocene). Ocean sediment distribution shows significant divergence both between the latest Paleocene and Paleocene Eocene Thermal Maximum (PETM)\, across the Eocene- Oligocene Transition (EOT)\, and in comparison to modern sediment distributions. In the latest Paleocene\, carbonate sedimentation extends to high southern latitudes. Disappearance of carbonate sediments at the PETM is well documented and can be attributed to dissolution caused by significant ocean acidification as a result of carbon-cycle perturbation. Biosiliceous sediments are rare and it is postulated that the lowered biogenic silica deposition at the equator is due to an absence of equatorial upwelling in the early Paleogene ocean. In the Southern Ocean\, we attribute the low in biosiliceous burial\, to the warm deep water temperatures which would have impacted biogenic silica preservation. Our sediment depositional maps record a tongue of radiolarian ooze in the late Eocene eastern equatorial Pacific. Enhanced biosiliceous deposits in the late Eocene equatorial Pacific and Southern Ocean are due to increased productivity and the spin-up of the oceans. The compilation documents the enhanced global carbonate sedimentation in the early Oligocene\, confirming that the drop in the carbonate compensation depth was global. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/ocean-sediments-tell-the-story-of-palaeogene-environmental-change-2/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/png:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/12/Screenshot-2022-12-15-at-19.39.51.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20230106T180000
DTEND;TZID=UTC:20230106T193000
DTSTAMP:20260404T062229
CREATED:20221215T193325Z
LAST-MODIFIED:20221215T193325Z
UID:10040-1673028000-1673033400@www.hertsgeolsoc.org.uk
SUMMARY:GA Lecture
DESCRIPTION:The Lower Cretaceous ‘East Lindsey Group’ a jewel in the geological crown of Lincolnshire given by Paul Hildreth (Yorkshire Geological Society)
URL:https://www.hertsgeolsoc.org.uk/event/ga-lecture-5/
LOCATION:over Zoom
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221215T193000
DTEND;TZID=UTC:20221215T210000
DTSTAMP:20260404T062229
CREATED:20230116T171747Z
LAST-MODIFIED:20230116T171747Z
UID:10108-1671132600-1671138000@www.hertsgeolsoc.org.uk
SUMMARY:Below the Bonnie Banks - investigating Lock Lomond's subaqueous Quaternary landscape
DESCRIPTION:given by Dr. Andrew Finlayson (Quaternary Geologist\, BGS Edinburgh) \nAbstract:\nLoch Lomond is an iconic part of Scotland’s scenery\, spanning landscapes of both Highland and Lowland character on either side of the Highland Boundary Fault.  From a Quaternary geological perspective\, the wider Loch Lomond basin has a long history of research and forms a type area for a period of environmental change at the end of the last glacial cycle in Britain – the ‘Loch Lomond Stadial’.  However\, there is still relatively little known about the submerged landscape below the loch surface.   This talk will give a brief overview of the Quaternary landscape evolution around Loch Lomond and then present new findings from multibeam bathymetry and shallow seismic profiles.  We will look at how these data add the loch’s glacial and postglacial story\, and also what they tell us about more recent processes such as subaqueous landslides associated with shoreline infrastructure.  \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/below-the-bonnie-banks-investigating-lock-lomonds-subaqueous-quaternary-landscape/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/12/P001246-Small.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221118T080000
DTEND;TZID=UTC:20221118T170000
DTSTAMP:20260404T062229
CREATED:20221118T173045Z
LAST-MODIFIED:20221119T171031Z
UID:9877-1668758400-1668790800@www.hertsgeolsoc.org.uk
SUMMARY:AGM
DESCRIPTION:followed by Talk on Hertfordshire RIGS
URL:https://www.hertsgeolsoc.org.uk/event/agm-followed-by-percy-evans-lecture-on-the-norber-erratics/
LOCATION:Hertfordshire
CATEGORIES:AGM
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221110T193000
DTEND;TZID=UTC:20221110T210000
DTSTAMP:20260404T062229
CREATED:20211202T165154Z
LAST-MODIFIED:20221111T163945Z
UID:6629-1668108600-1668114000@www.hertsgeolsoc.org.uk
SUMMARY:The Stegosaurian Dinosaurs
DESCRIPTION:given by Dr Susannah C. R. Maidment (Senior Researcher\, Natural History Museum\, London) \nAbstract:\nStegosaurs are a group of dinosaurs characterized by the possession of two rows of plates and spines that extend from the neck to the end of the tail. They are known from the Middle Jurassic to the Early Cretaceous and have been found on all continents except Australia and Antarctica. Stegosaurs are part of a larger group of armoured dinosaurs\, which also includes the ankylosaurs. Stegosaurs were four-legged plant-eaters and body mass estimates indicate they weighed about the same as a rhino. They were probably slow-moving\, and not capable of running. They had very small teeth and do not appear to have chewed\, but despite this\, their bite forces indicate they could have eaten tough vegetation and small twigs. Several hypotheses have been put forward about the function of the plates of stegosaurs\, but these have proven difficult to test. Different species appear to have had differently shaped plates\, suggesting a role in display\, and perhaps to deter predators. Two stegosaurs are known from North America: the iconic Stegosaurus\, which is known from numerous skeletons from Colorado\, Utah and southern Wyoming\, and the less well-known Hesperosaurus\, represented by just a few specimens from northern Wyoming and Montana. Both are known from the Morrison Formation\, a suite of rocks laid down by rivers and on flood plains about 150 million years ago\, and the two genera appear to have lived at the same time. Over 120 years of sampling in the south of the Morrison basin has failed to find any specimens of Hesperosaurus there\, perhaps suggesting the two genera were ecologically segregated. Although stegosaurs are one of the most iconic dinosaurs\, much remains unknown about their palaeobiology due to their sparse fossil record. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-stegosaurian-dinosaurs/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/12/Stego.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221013T183000
DTEND;TZID=UTC:20221013T200000
DTSTAMP:20260404T062229
CREATED:20211202T165038Z
LAST-MODIFIED:20221020T085555Z
UID:6627-1665685800-1665691200@www.hertsgeolsoc.org.uk
SUMMARY:The first day of the Cenozoic: Insights from the Chicxulub impact crater
DESCRIPTION:given by Dr. Auriol Rae (Junior Research Fellow in Earth Sciences Trinity College\, University of Cambridge) \nAbstract: \n66 Million years ago\, a 14 km-diameter meteoroid struck the Earth at approximately 20 km/s. This event had a profound influence on the history of life on Earth – causing the extinction of around 75% of all species including all of the non-avian dinosaurs. This impact produced the 200 km-diameter Chicxulub Crater\, located in present-day Mexico. This talk will look at the geological\, climatological\, and biological consequences of the end-Cretaceous impact\, with particular insight from drilling of the crater in 2016 by the International Ocean Discovery Program. Furthermore\, the wider significance of impact crater formation as a planetary geological process will be discussed. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/notes-from-deep-time-a-journey-through-past-and-future-worlds/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/12/IMG_6412-scaled.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221007T180000
DTEND;TZID=UTC:20221007T193000
DTSTAMP:20260404T062229
CREATED:20220824T105928Z
LAST-MODIFIED:20220824T110353Z
UID:9626-1665165600-1665171000@www.hertsgeolsoc.org.uk
SUMMARY:GA Lecture
DESCRIPTION:The rise and fall of the last British-Irish Ice Sheet given by Prof Chris Clark.
URL:https://www.hertsgeolsoc.org.uk/event/ga-lecture-4/
LOCATION:Zoom Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220929T160000
DTEND;TZID=UTC:20221002T170000
DTSTAMP:20260404T062229
CREATED:20211021T142151Z
LAST-MODIFIED:20220915T170039Z
UID:5522-1664467200-1664730000@www.hertsgeolsoc.org.uk
SUMMARY:Flamborough Head - Excursion
DESCRIPTION:Paul Hildreth of the Yorkshire Geological Society will lead this 3-day trip to the delights of Flamborough Head. \nItinerary: \nThursday 29 September\nIntroductory talk over drinks at 8pm.\nFriday 30 September\nNorth Landing(Welton/Burnham Chalk boundary and variations in flint form) followed by Selwick’s Bay (Burnham/Flamborough Chalk boundary\, Flamborough Fault zone and syncline) with lunch at local café & free evening.\nSaturday 1 October\nDane’s Dyke and Sewerby (Flamborough Chalk\, Flamborough Sponge Bed\, Devensian stratigraphy and Sewerby Buried Cliff (Ipswichian) with packed lunch & group meal in the evening.\nSunday 2 October\nRSPB reserve at Bempton Cliffs – clifftop walk\, spectacular geomorphology\, fault zone and there should be some seabirds still around with lunch at RSPB Centre. \nParticipants may wish to revisit the HGS June 2021 talk on It’s ‘And Up North – An overview of the Chalk of the Northern Province given by Paul Hildreth and download a fabulous Field Guide from the Members’ Section. \nJanet
URL:https://www.hertsgeolsoc.org.uk/event/flamborough-head-excursion/
LOCATION:Sefton Hotel\, The Sefton Hotel\, Bridlington\, Yorkshire\, YO15 2HX\, United Kingdom
CATEGORIES:Field Trips
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220908T193000
DTEND;TZID=UTC:20220908T210000
DTSTAMP:20260404T062229
CREATED:20211202T164923Z
LAST-MODIFIED:20220909T112855Z
UID:6625-1662665400-1662670800@www.hertsgeolsoc.org.uk
SUMMARY:Understanding large igneous provinces and volcanic rift margins
DESCRIPTION:given by Dr Dougal Jerram (DougalEARTH Ltd) \nAbstract \n\nLarge Igneous Provinces (LIPs) represent some of the largest eruptive episodes on the planet and along with their associated volcanic rifted margins\, they have left a great footprint on the geology of the planet. This talk will present a number of examples from around the globe looking at the scales and occurrences of LIPs and studies into both onshore and offshore volcanic margins. We will touch on the relationship with climate change\, offshore exploration and the possibilities for carbon sequestration. Look at how we can build 3D models of key outcrops and the use of modern day analogues to help unravel their evolution.\n\n\n\n\n\nDougal Jerram (BSc Cardiff\, PhD Liverpool) began his professional career in 1996 with a two-year postdoctoral position at the University of Würzburg\, Germany. In 1998 he returned to the UK and spent 13 years as research fellow\, lecturer and senior lecturer at the University of Durham. In June 2011 he set up DougalEARTH Ltd.\, where he combines his pursuits in consultancy\, media\, research and teaching\, and joined the University of Oslo as a 20% research professor. He has published extensively in the scientific literature as well as penning a number of books for both children and adults including; Victor the Volcano\, Dig to the Centre of the Earth\, Introducing Volcanology\, Volcanoes of Europe\, and The travel Guide the Centre of the Earth\, as well as two of the geological field guide series (Igneous and metamorphic guides).   He has also appeared on the BBC\, National Geographic\, Discovery Channel\, History Channel and Channel 4\, and on many other TV and radio programs\, relating the earth sciences to the general public. In 2006 he received the Murchison Fund by the Geological Society of London for his early career contribution to geology. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/understanding-large-igneous-provinces-and-volcanic-rift-margins/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220806T110000
DTEND;TZID=UTC:20220806T163000
DTSTAMP:20260404T062229
CREATED:20220616T063406Z
LAST-MODIFIED:20220622T165621Z
UID:9120-1659783600-1659803400@www.hertsgeolsoc.org.uk
SUMMARY:HGS Summer Event - Is it flat or bent? The Chalk around Royston
DESCRIPTION:Morning at Royston Cave. Park in one of the town centre car parks & walk to Royston Cave. \nRoyston Cave interior\nCome and explore the amazing Royston Cave; check out the theories and get an update on the latest geological dates produced by the Herts. Geol. Society \nLunch – local pub – The Tally Ho!\, Barkway \nAfternoon visits to Barkway Chalk Pit and Reed Chalk Pit \nBarkway Chalk Pit\nHave a look at some upended Lewes Chalk and see if we can find the Chalk Rock. \nRegister through: haydonbailey@outlook.com Cost £5.00
URL:https://www.hertsgeolsoc.org.uk/event/hgs-summer-event-the-chalk-around-royston/
LOCATION:Royston Cave\, Katherine’s Yard\, Melbourne Street\, Royston\, Hertfordshire\, SG8 7BZ\, United Kingdom
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220714T193000
DTEND;TZID=UTC:20220714T210000
DTSTAMP:20260404T062229
CREATED:20211202T164808Z
LAST-MODIFIED:20220715T165857Z
UID:6623-1657827000-1657832400@www.hertsgeolsoc.org.uk
SUMMARY:The Anthropocene: a new epoch of geological time characterised by humans
DESCRIPTION:given by Prof. Mark Williams (University of Leicester). \nAbstract: \nThe Holocene Epoch was a time of growing human population\, urbanisation\, agriculture and industry. But over the past 200 years\, and especially since the 1950s\, the human footprint on the Earth has grown very substantially. Thus\, human population grew from circa 1 billion in 1800 to 2 billion in 1930. In 1950 it was about 2.5 billion and then nearly 8 billion in 2022. Through this interval of time there has been a rapidly increasing\, though very uneven\, demand for the Earth’s resources that has left a clear geological signal in sedimentary deposits. These identify a fundamental change to the Earth System\, and the record of this is being discussed as a proposed new epoch of geological time that succeeds the Holocene. This is the Anthropocene and its boundary may be placed in deposits forming in the mid-20th century. The Anthropocene challenges us about our place in the Earth System\, and about our unsustainable use of resources. It has also been the catalysis for developing transdisciplinary solutions to the many environmental problems we now face. \nView This Talk In The Members’ Section. \n 
URL:https://www.hertsgeolsoc.org.uk/event/the-anthropocene-a-new-epoch-of-geological-time-characterised-by-humans/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/06/Holocene-Epoch.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220621T204000
DTEND;TZID=UTC:20220621T210000
DTSTAMP:20260404T062229
CREATED:20220618T170740Z
LAST-MODIFIED:20220624T061343Z
UID:9132-1655844000-1655845200@www.hertsgeolsoc.org.uk
SUMMARY:BBC Radio 4 - In Touch
DESCRIPTION:Tune in to In Touch to hear HGS member Mike Lambert talking about access to museums.
URL:https://www.hertsgeolsoc.org.uk/event/bbc-radio-4-in-touch/
LOCATION:BBC Radio 4
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220609T193000
DTEND;TZID=UTC:20220609T210000
DTSTAMP:20260404T062229
CREATED:20211202T164656Z
LAST-MODIFIED:20220610T141502Z
UID:6621-1654803000-1654808400@www.hertsgeolsoc.org.uk
SUMMARY:Preliminary observations and implications of a new Bathonian (Middle Jurassic) lagerstätte in Wiltshire\, UK
DESCRIPTION:with a focus on the micropalaeontology and geochemistry \n\n\n\ngiven by Dr. Steve Stukins (Senior Curator Micropalaeontology\, Natural History Museum\, London) \nAbstract: \n\n\n\nA new UK Bathonian (Middle Jurassic) lagerstätte has been revealed and was publicised last year as one of the most important Jurassic echinoderm localities in the world. Excavation of the site has produced thousands of exceptionally preserved articulated echinoderms including at least 18 species\, belonging to all five extant echinoderm classes. A closer look however\, at the range of other fossil groups has shown the exceptional preservation and diversity is not limited to the echinoderms. \nStephen will be presenting initial findings from the palynological and microfaunal investigations along with some geochemical analysis in order to help understand the local environment and why this ‘unique’ site exists. The wider context of palaeogeography and our understanding of the UK Jurassic will also be opened up to debate. \nView This Talk In The Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/preliminary-observations-and-implications-of-a-new-bathonian-middle-jurassic-lagerstatte-in-wiltshire-uk/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/06/June-Talk-Image.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220603T180000
DTEND;TZID=UTC:20220603T193000
DTSTAMP:20260404T062229
CREATED:20220501T092701Z
LAST-MODIFIED:20220525T134700Z
UID:8826-1654279200-1654284600@www.hertsgeolsoc.org.uk
SUMMARY:GA Henry Stopes Memorial vLecture
DESCRIPTION:Mapping the past: Quaternary Palaeogeography
URL:https://www.hertsgeolsoc.org.uk/event/https-geologistsassociation-org-uk-lectures/
LOCATION:over Zoom
CATEGORIES:GA Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220515T103000
DTEND;TZID=UTC:20220515T163000
DTSTAMP:20260404T062229
CREATED:20220320T071922Z
LAST-MODIFIED:20220320T073513Z
UID:8609-1652610600-1652632200@www.hertsgeolsoc.org.uk
SUMMARY:Village Geology in Hertfordshire (Ashwell) - for GeoWeek
DESCRIPTION:Leader:  Mike Howgate \nMeeting up at the lych-gate of St. Mary’s church Ashwell at 10.30 am. \nMorning:  Visit to this  ‘ clunch’ church with its famous graffito of the Black Death and a devastating storm in the Middle Ages.  Followed by a walking tour of the village including the Chalk springs with their ‘Ice Age fauna’\, a lock-up built of ‘clunch’ blocks and a Wichert/Cobb thatched wall. \nThere are two decent pub for lunch. \nAfternoon: The village museum ( small charge) has a small but interesting geological collection.   Possibility of a walk to Ashwell Chalk pit or cars to Steeple Morden quarry.
URL:https://www.hertsgeolsoc.org.uk/event/village-geology-in-hertfordshire-for-geoweek/
LOCATION:Meet at Lynch Gate\, St Mary’s Church\, Ashwell\, Hertfordshire\, SG7 5LY\, United Kingdom
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20220515
DTEND;VALUE=DATE:20220519
DTSTAMP:20260404T062229
CREATED:20211205T121802Z
LAST-MODIFIED:20211205T122924Z
UID:6675-1652572800-1652918399@www.hertsgeolsoc.org.uk
SUMMARY:RGS Field Trip to South Pembroke
DESCRIPTION:The Reading Geological Society (RGS) are extending an invitation to HGS members to join their 2022 field trip to South Pembroke. Details of itinerary to follow. \nIf you are interested in this trip and would like to be notified when further details become available please click here.
URL:https://www.hertsgeolsoc.org.uk/event/rgs-field-trip-to-south-pembroke/
LOCATION:Hertfordshire
CATEGORIES:Field Trips
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220512T193000
DTEND;TZID=UTC:20220512T210000
DTSTAMP:20260404T062229
CREATED:20211202T164439Z
LAST-MODIFIED:20220610T141430Z
UID:6619-1652383800-1652389200@www.hertsgeolsoc.org.uk
SUMMARY:Civil engineering meets geology: Panama Canal
DESCRIPTION:given by Dr. Tony Waltham\, travelling geologist. \nAbstract: \nA long and varied history of great canal construction extended throughout the 1800s\, and included the first attempt at a canal across Panama\, which failed in its early stages. It was therefore into the next century that that the Americans built the Panama Canal between 1904 and 1914.  Construction of the massive concrete locks and of Gatun Lake both broke world records at the time\, and were brilliant in concept and evolution. Complex geology\, dominated by the horrendously weak Cucaracha Clay\, created huge problems in the deep Culebra Cut\, and these were overcome\, in less than subtle style\, by brute force and massive expenditure of machinery and effort. The Panama Canal continues to be a critical element in world trade\, and recent completion of its larger locks assures its future. \nView This Talk In The Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/civil-engineering-meets-geology-at-the-panama-canal/
LOCATION:Oaklands College\, Sapsed Room (SR)\, Oaklands College\, St Albans\, Hertfordshire\, AL4 0XS\, United Kingdom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/12/Panama-N162080T.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220423T100000
DTEND;TZID=UTC:20220423T153000
DTSTAMP:20260404T062229
CREATED:20211204T061358Z
LAST-MODIFIED:20211205T153339Z
UID:6644-1650708000-1650727800@www.hertsgeolsoc.org.uk
SUMMARY:Joint BGS/HGS Field Trip to Greensand Ridge
DESCRIPTION:led by Bev Fowlston (BGS). \n\n\n\n\nMeet at Clophill Ecolodges at 10:00 for 10:30 depart \n\n\n\n\nField trip details \n 
URL:https://www.hertsgeolsoc.org.uk/event/greensand-ridge-field-trip/
LOCATION:Clophill Ecolodges\, Old Church Path\, Clophill\, Bedfordshire\, MK45 4BP
CATEGORIES:Field Trips
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220414T193000
DTEND;TZID=UTC:20220414T210000
DTSTAMP:20260404T062229
CREATED:20211202T164129Z
LAST-MODIFIED:20220417T070212Z
UID:6611-1649964600-1649970000@www.hertsgeolsoc.org.uk
SUMMARY:Percy Evans Lecture on Tunnelling the Chilterns:
DESCRIPTION:Progress so far; understanding the risks; and how technology\, planning and logistics help address the challenges of tunnelling through a highly fractured chalk aquifer. \ngiven by David Eve (ALIGN\, Head of Engagement & Compliance for HS2) \nAbstract: \nWho are Align and how does the company fit within the HS2 structure? This leads on to an overview of HS2. The HS2 route is split into various sectors\, so I need to give an overview of Sector C1. What progress have we made to date and what were the results of the Ground Investigation? \nWhat are the risks? \n\nVolume loss; frac in and out;\nLoss of slurry to surface;\nLoss of ground stability within excavation chamber;\nLoss of air to surface (if intervention conducted under hyperbaric conditions);\nLoss of grout to surface; and over-excavation within excavation chamber.\nLeading to: Ground deformation; and excessive movement of structures.\n\nHow do we mitigate for these risks? \n\nOverview of the ‘system’ – TBM to Slurry Treatment Plant;\nPre-treatment where required (shafts);\nTechnology of the TBM (selection) – speed\, variable slurry density control\, anulus Grouting to maintain <1% volume loss\, continuous monitoring (MobyDic\, borehole data\, ground instrumentation) and adaption;\nLogistics and processing of slurry;\nExclusion zones and planning of appropriate maintenance stops;\nSecuring of land in higher risk areas.\n\nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/percy-evans-lecture-on-tunnelling-the-chilterns/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/03/HS2-High-Speed-Rail.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220310T193000
DTEND;TZID=UTC:20220310T210000
DTSTAMP:20260404T062229
CREATED:20211202T163608Z
LAST-MODIFIED:20220319T200757Z
UID:6609-1646940600-1646946000@www.hertsgeolsoc.org.uk
SUMMARY:AGM followed by a talk on What can satellites tell you about local geology?
DESCRIPTION:given by Jo Conway (Herts County Council & HGS). \nAbstract:\nThe talk is based on one presented recently as the summary of my dissertation topic for the Masters course in Geological and Environmental Hazards at the University of Portsmouth. My dissertation title was ‘Use of Sentinel-2 data to identify glaciotectonic features near Barkway\, Hertfordshire and link to geohazard assessment’. \nRelocating from North Wales\, with limited awareness of Hertfordshire geology\, my tutor suggested I look at the area near Barkway in North Hertfordshire for the geological hazard of glaciotectonic rafts\, with the added dimension of whether new technology (the Sentinel-2 satellite array) could be used in identification of geological features. Satellites give a global coverage of the earth’s surface passing over the same spot at mid-morning every 5 days (and shorter return periods as more in the array are launched). The satellite images are downloaded as ‘multi- spectral images’\, which enables the wavelengths to be separated. Using software these can be manipulated to calculate indices which can give different ‘colour’ images for comparison\, as well as graphical information. I will talk about the processing of the satellite images and how I linked various images to look for pattern recognition. \nView this talk in the Members’ Section. \n 
URL:https://www.hertsgeolsoc.org.uk/event/agm-followed-by-a-talk-on-what-can-satellites-tell-you-about-local-geology/
LOCATION:over Zoom
CATEGORIES:AGM,Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220220T100000
DTEND;TZID=UTC:20220220T140000
DTSTAMP:20260404T062229
CREATED:20211204T060446Z
LAST-MODIFIED:20211217T054623Z
UID:6640-1645351200-1645365600@www.hertsgeolsoc.org.uk
SUMMARY:Little Heath Geoconservation
DESCRIPTION:Two stages: \nStage 1: vegetation clearance \nStage 2: face \nRestricted numbers – please register your interest here
URL:https://www.hertsgeolsoc.org.uk/event/little-heath-geoconservation/
LOCATION:Little Heath\, Potten End\, Potten End\, United Kingdom
CATEGORIES:Field Trips
END:VEVENT
END:VCALENDAR