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X-WR-CALDESC:Events for Hertfordshire Geological Society
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TZID:UTC
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TZOFFSETTO:+0000
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DTSTART:20200101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20221110T193000
DTEND;TZID=UTC:20221110T210000
DTSTAMP:20260526T233049
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:20260526T233049
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:20220908T193000
DTEND;TZID=UTC:20220908T210000
DTSTAMP:20260526T233049
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:20220714T193000
DTEND;TZID=UTC:20220714T210000
DTSTAMP:20260526T233049
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:20260526T233049
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:20260526T233049
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:20220512T193000
DTEND;TZID=UTC:20220512T210000
DTSTAMP:20260526T233049
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:20220414T193000
DTEND;TZID=UTC:20220414T210000
DTSTAMP:20260526T233049
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:20260526T233049
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:20220210T193000
DTEND;TZID=UTC:20220210T210000
DTSTAMP:20260526T233049
CREATED:20211202T163106Z
LAST-MODIFIED:20220319T200521Z
UID:6604-1644521400-1644526800@www.hertsgeolsoc.org.uk
SUMMARY:The eruption of the Soufriere Hills Volcano\, Montserrat
DESCRIPTION:given by Prof. Steve Sparks (University of Bristol). \nAbstract: \nThe volcanic eruption of the Soufriere Hills Volcano\, Montserrat (1995 to 2010) is one of the most detailed studied eruptions of an andesite volcano. The research led to major advances in understanding volcanic processes. The eruption was also a traumatic experience for the people of Montserrat which they faced with fortitude and resilience. New innovations in managing volcanic emergencies were pioneered during the eruption. \nView this talk in the Members’ Section.\n \n  \n 
URL:https://www.hertsgeolsoc.org.uk/event/the-eruption-of-the-soufriere-hills-volcano-montserrat/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/01/Sparks-IMG_3602res-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20220113T193000
DTEND;TZID=UTC:20220113T210000
DTSTAMP:20260526T233049
CREATED:20211202T162914Z
LAST-MODIFIED:20220126T170721Z
UID:6602-1642102200-1642107600@www.hertsgeolsoc.org.uk
SUMMARY:Mammal miniaturisation during Paleogene hyperthermals: a new palaeodietary perspective
DESCRIPTION:given by Dr. Neil Adams (University of Oxford Natural History Museum) \nAbstract: \n\n\n\nA repeated response to abrupt climate warming among vertebrates is body size reduction\, which has been observed in response to anthropogenic climate change and to abrupt warming events in the geological record. Several hypotheses have been proposed to explain this size decrease among mammals\, including range shifts of populations with geographically variable body size\, as well as in situ evolutionary responses to environmental changes. In this talk\, I will present findings of a new test of these hypotheses using a novel\, multi-comparator approach to dental microwear texture analysis. The evidence favours a scenario of in situ ecological responses to changes in resource availability during a period of abrupt climate warming in the early Paleocene (ca. 62.3 Ma). The more rapid rate of modern climate and environmental change\, compared to natural warming events in the Paleogene\, leads us to question whether living mammals will be able to adapt quickly enough to avoid extinction without human intervention. \nView This Talk In The Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/mammal-miniaturisation-during-paleogene-hyperthermals-a-new-palaeodietary-perspective/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/12/Microwear-image.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20211209T193000
DTEND;TZID=UTC:20211209T210000
DTSTAMP:20260526T233049
CREATED:20210627T145421Z
LAST-MODIFIED:20220319T193159Z
UID:1981-1639078200-1639083600@www.hertsgeolsoc.org.uk
SUMMARY:The last British Ice Sheet
DESCRIPTION:given by Dr Bethan Davies (Royal Holloway\, University of London) \nAbstract: \nUnderstanding how the last British-Irish Ice Sheet behaved in response to external climatic forcing may be used as an analogue for how the Antarctic Ice Sheet may behave in the future. We can use these empirical datasets to calibrate numerical simulations and better understand ice-sheet response to climate and ocean forcing. During the Last Glacial Maximum (LGM)\, ice streams of the last British-Irish Ice Sheet (BIIS) controlled the ice discharge from various dispersal centres. Deglaciation was characterised by shifts in ice-divide location and changes in internal ice-sheet dynamics\, resulting in substantial flow switches and significant ice-stream reconfiguration\, and hence modification of their landform signatures. We present new geomorphological mapping and 10Be cosmogenic nuclide ages from Northern England (Stainmore Gap\, Eden Valley and Vale of York)\, that constrain regional dynamic ice-stream retreat following the LGM. We identify complex decoupling of competing ice lobes\, characterised by early retreat of the North Sea Lobe and a minor re-advance of Stainmore ice prior to ~20 ka. This was followed by rapid recession of the central Stainmore Gap\, contemporaneous with the recession of the Tyne Gap Ice Stream. The northwards ice-flow reversal in the Vale of Eden was associated with the development of ice domes across the northern Pennines\, Howgill Fells and the Lake District. This shift in dispersal centres and ice divide migration likely triggered the rapid collapse of eastward ice stream corridors.  The central sector of the BIIS rapidly collapsed back up into upland dispersal centres between 20 to 17.5 ka.  This work highlights the role internal factors\, such as topography\, in driving ice-divide migration and flow switches during externally and climatically forced ice-sheet thinning. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-last-british-ice-sheet/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/png:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2022/01/Screenshot-2022-01-25-at-16.25.56.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20211111T193000
DTEND;TZID=UTC:20211111T210000
DTSTAMP:20260526T233049
CREATED:20210627T145246Z
LAST-MODIFIED:20220319T192719Z
UID:1979-1636659000-1636664400@www.hertsgeolsoc.org.uk
SUMMARY:Geoscience\, and the World After Oil
DESCRIPTION:given by Tony Doré (Global Chief Scientist\, Energy & Geoscience Institute (EGI) agdore@gmail.com\, tdore@egi.utah.edu) \nAbstract:\nMeeting burgeoning global energy demand while mitigating anthropogenic climate change must overcome the challenges of denial and indifference\, and also the negation of some genuine attempts by industry to move towards cleaner energy.  Real progress will come not from blame and confrontation\, but from forward-looking scientific and engineering solutions. \nWe are living at a historical crisis point in the world energy balance\, in which future projections depend on a complex interplay between fossil fuels and alternative energy sources\, and where the role and type of fuels employed will be driven by geopolitics and environmental concerns. All projections to approximately three decades hence show rising global energy demand\, primarily driven by further development of emerging markets. This is coupled with a decline in legacy petroleum supply\, waning exploration and a steady reduction in new resource additions. Conventional exploration\, particularly by the International Oil Companies\, is opportunity-constrained\, and to date export of the North American experience with unconventionals has met with mixed success. \nAdditionally\, the most optimistic current projections for growth in alternative energy sources such as renewables and nuclear do not make up the demand shortfall.  Radical step changes are likely in both demand and supply\, based on world-changing events such as the current pandemic\, or technological developments.  However\, by their nature these are difficult to predict. \nBridging this energy gap\, and meeting global CO2/climate targets\, requires close international co-operation\, responsible stewardship of fossil fuel resources\, investment in alternative energy and more emphasis on critical minerals and energy storage. Progressive companies are already embracing these ideas\, and developing business models based on renewable energy phasing out petroleum\, on carbon management\, and on environmental sensitivity. This talk will discuss what role the geoscience community can – and should – play in this energy transition. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/geoscience-and-the-world-after-oil/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/png:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/06/World-Energy-Graphic.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20211007T193000
DTEND;TZID=UTC:20211007T210000
DTSTAMP:20260526T233049
CREATED:20210627T145052Z
LAST-MODIFIED:20211129T143059Z
UID:1977-1633635000-1633640400@www.hertsgeolsoc.org.uk
SUMMARY:Geoconservation - principles into practice
DESCRIPTION:given by Dr Colin Prosser (Principle Specialist in Geoconservation\, Natural England). \nRearranged from October 2020. \n\nAbstract:\nThe UK is extremely geodiverse with many geological features and sites of international\, national and local importance for research\, education\, tourism and recreation. However\, we are a small country with a large population and our geoheritage is subject to a range of threats. These include development pressure\, landfill\, coastal and river engineering\, neglect and ignorance. Retaining these features and sites for future generations requires us to take action locally\, nationally and internationally\, both to conserve them and to raise awareness amongst the public and decision makers about their value to science and society. This talk explores some of the broad principles which influence different approaches to geoconservation and drawing upon the work of local geoconservation groups and societies\, national associations\, government conservation agencies and UNESCO Global Geoparks and World Heritage Sites\, illustrates how geoconservation is being put into practice on the ground.\n\n\nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/geoconservation-principles-into-practice/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/06/Dorset07-008.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210909T193000
DTEND;TZID=UTC:20210909T210000
DTSTAMP:20260526T233049
CREATED:20210627T144720Z
LAST-MODIFIED:20211021T140518Z
UID:1974-1631215800-1631221200@www.hertsgeolsoc.org.uk
SUMMARY:Ammonites - mythology to modern era
DESCRIPTION:given by Dr Mick Oates (Retired: BG) \nAbstract: Ammonites are a popular subject\, as they are both common and rather attractive planispiral fossils.  So it is no surprise that they attracted interest from ancient times.  The talk will cover a lot of ground\, from early beliefs attached to these petrifactions dug from the ground to the most recent interpretations of how they evolved as molluscs and functioned as a part of Jurassic and Cretaceous ecosystems. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/ammonites-mythology-to-modern-era/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/06/Ammonites.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210708T193000
DTEND;TZID=UTC:20210708T210000
DTSTAMP:20260526T233049
CREATED:20210612T141840Z
LAST-MODIFIED:20211021T140447Z
UID:1020-1625772600-1625778000@www.hertsgeolsoc.org.uk
SUMMARY:The Dinosaur - Bird link: A critical overview
DESCRIPTION:Given by Mike Howgate (HGS). \nAbstract: \nTo most interested lay-people and even most vertebrate palaeontologists the theory that birds arose from a group of Theropod dinosaurs is now regarded as an incontestable fact. However there are a handful of dissenters from this supposed certainty. I am one. \nI will start by outlining the position of Archaeopteryx as the quintessential example of an intermediate between two classes of organisms – reptiles and birds\, before considering the various theories which have been put forward to explain which group of reptiles could best be considered the direct ancestor of the avian lineage and whether flight could have originated from the ground – up as suggested by the ‘Dino-Bird link’ supporters. \nIn the final half of the talk will concentrate on two alleged Dino-Birds which featured prominently in the debate. Sinosauropteryx prima\, a compsognathid dinosaur which is supposed to exhibit PROTOFEATHERS and Microraptor gui the alleged four winged flying dinosaur which is an archaeopteryx-like bird and not a theropod dinosaur at all. A more parsimonious ancestor for the avian lineage will be suggested. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-dinosaur-bird-link-a-critical-overview/
LOCATION:Zoom Talk
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2021/06/Dino-Bird.jpg
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DTSTART;TZID=UTC:20210610T000000
DTEND;TZID=UTC:20210610T000000
DTSTAMP:20260526T233049
CREATED:20210612T140215Z
LAST-MODIFIED:20220319T192505Z
UID:1011-1623283200-1623283200@www.hertsgeolsoc.org.uk
SUMMARY:It's 'Ard Up North: An overview of the Chalk of the Northern Province
DESCRIPTION:given by Paul Hildreth (Yorkshire Geological Society). \nThe Chalk of Yorkshire and Lincolnshire belongs to a sedimentary basin distinct from\, and yet closely related to\, other late Cretaceous basins in southern England. For many years\, geologists attempted to fit the southern biostratigraphy onto the northern succession; rather like fitting a square peg in a round hole! A short\, though very significant\, paper was published in the Proceedings of the Yorkshire Geological Society (PYGS) in 1978 which re-classified the northern Chalk\, exactly 100 years after the first recorded reference to its greater similarity to the succession in Germany than to those of southern England and France. Ironically perhaps\, but certainly apt for this meeting\, a co-author of the 1978 paper was a native of Hertfordshire and well known to the Hertfordshire Geological Society. \nThis talk will focus on the lithostratigraphy of the chalks of Yorkshire and Lincolnshire\, compare with some levels of the southern succession and present some thoughts on future research. I may also be able to convince you that the spectacular chalk cliffs of Flamborough Head\, which provide valuable exposures of the full Chalk succession as well as breathtaking scenery\, are well worth a visit! \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/its-ard-up-north-an-overview-of-the-chalk-of-the-northern-province/
LOCATION:Zoom Talk
CATEGORIES:Talks
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DTSTART;TZID=UTC:20210513T193000
DTEND;TZID=UTC:20210513T210000
DTSTAMP:20260526T233049
CREATED:20210627T144407Z
LAST-MODIFIED:20211021T140320Z
UID:1971-1620934200-1620939600@www.hertsgeolsoc.org.uk
SUMMARY:Smith - marks on a landscape
DESCRIPTION:given by Dr Peter Wigley (Consultant for Lynx Information Systems & co-author of Strata. – William Smith’s Geological Maps. \n\nStrata. – William Smith’s Geological Maps cover\nAbstract \nWilliam Smith (1769–1839)\, surveyor and geologist\, was born on 23th March 1769 at The Forge\, Churchill\, Oxfordshire\, the son of the village blacksmith and educated at the village school.\nIn 1787 Smith became assistant to the land surveyor Edward Webb (1751–1828) at Stow-on-the-Wold\,  learning  to  measure  and  value  land. In 1791 the young 22 year old Smith was sent by his employer to survey an estate near High Littleton in Somerset. He made the journey on foot from Stow-on-the-Wold down to Stowey in Somerset\, a distance of over 80 miles. It was in Somerset\, while surveying the course of a canal\, that Smith developed his ideas on strata and the relationship of particular fossils to specific strata. This led to his first geological maps around Bath\, Somerset and later to his pioneering 1815 geological map of England and Wales.However\, there was much more to Smith than just his maps. He made geological cross-sections\, he was a coal finder\, land drainer and improver\, he worked on land slips\, he sunk water wells and built sea defences but most importantly\, through his publications\, he laid the foundations for the science of stratigraphy. \nThrough digital technology it has been possible to combine Smith’s maps and other aspects of his work with modern remote sensing data and to visualise his enduring legacy on the landscape of England and Wales. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/smith-marks-on-a-landscape/
LOCATION:Zoom Talk
CATEGORIES:Talks
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DTSTART;TZID=UTC:20210408T193000
DTEND;TZID=UTC:20210408T210000
DTSTAMP:20260526T233049
CREATED:20210627T142754Z
LAST-MODIFIED:20211021T140222Z
UID:1968-1617910200-1617915600@www.hertsgeolsoc.org.uk
SUMMARY:Percy Evans Lecture & Presidential Address "In search of Buronite in Norway"
DESCRIPTION:given by Linda Hamling. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/percy-evans-lecture-presidential-address-in-search-of-buronite-in-norway/
LOCATION:Zoom Talk
CATEGORIES:Talks
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DTSTART;TZID=UTC:20210311T200000
DTEND;TZID=UTC:20210311T210000
DTSTAMP:20260526T233049
CREATED:20210627T142353Z
LAST-MODIFIED:20211010T162413Z
UID:1963-1615492800-1615496400@www.hertsgeolsoc.org.uk
SUMMARY:Science driven by conflict
DESCRIPTION:Followed our 2021 AGM and given by Haydon Bailey (HGS). \nThis talk was not recorded.
URL:https://www.hertsgeolsoc.org.uk/event/science-driven-by-conflict/
LOCATION:Zoom Talk
CATEGORIES:Talks
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DTSTART;TZID=UTC:20210211T193000
DTEND;TZID=UTC:20210211T210000
DTSTAMP:20260526T233049
CREATED:20210627T142129Z
LAST-MODIFIED:20211021T135928Z
UID:1961-1613071800-1613077200@www.hertsgeolsoc.org.uk
SUMMARY:Jungle Volcano
DESCRIPTION:given by Prof. Chris Jackson (Imperial College London) \nRearranged from December 2020. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/jungle-volcano/
LOCATION:Zoom Talk
CATEGORIES:Talks
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DTSTART;TZID=UTC:20210114T193000
DTEND;TZID=UTC:20210114T210000
DTSTAMP:20260526T233049
CREATED:20210627T141930Z
LAST-MODIFIED:20211021T140036Z
UID:1959-1610652600-1610658000@www.hertsgeolsoc.org.uk
SUMMARY:The geology of Mars and the rover missions
DESCRIPTION:given by Dr Susanne Schwenzer (Open University). \nDr Susanne P Schwenzer is a planetary scientist\, who has researched Mars geology\, petrology and mineralogy since her PhD. In her talk\, she will tell the story of Mars as seen from its rocks: First\, there was a (warm?) and wet Mars that saw rivers flowing and lakes forming. At the same time\, a period of intense impact cratering shaped the Martian landscape\, with its own effects on the mineralogy in the subsurface of the planet. About 4.2 Billion years ago\, the Martian climate changed to much dryer conditions\, and it remained that way to this day. Most of the evidence for the Martian geologic record comes from orbiters\, but landers and rovers have most recently contributed hugely important details that in turn make it possible to interpret the global picture. The talk will briefly discuss several of those missions\, especially the Curiosity rover mission and its most important findings. \nView this talk in the Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-geology-of-mars-and-the-rover-missions/
LOCATION:Zoom Talk
CATEGORIES:Talks
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