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PRODID:-//Hertfordshire Geological Society - ECPv6.15.20//NONSGML v1.0//EN
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X-ORIGINAL-URL:https://www.hertsgeolsoc.org.uk
X-WR-CALDESC:Events for Hertfordshire Geological Society
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TZID:UTC
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TZOFFSETFROM:+0000
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DTSTART:20250101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20260108T193000
DTEND;TZID=UTC:20260108T210000
DTSTAMP:20260422T215213
CREATED:20260110T142727Z
LAST-MODIFIED:20260111T152334Z
UID:19013-1767900600-1767906000@www.hertsgeolsoc.org.uk
SUMMARY:Stratigraphy & Sedimentology of Northern European Chalks
DESCRIPTION:given by Dr Haydon Bailey\, HGS Chairman\, Past GA president & geological advisor to the Chiltern Society \nAbstract:\n \nThe Upper Cretaceous Chalks of Northern Europe appear\, on the face of it\, to represent sedimentation during an extended period of relative tectonic and environmental stability. Nothing could be further from the truth. These uniform\, white\, fine grained carbonates are the sediments resulting from constant change in water temperature\, oxygen content\, dynamic water currents both at the sea surface and at depth.  \nBack in 1994 I presented a talk at a European conference entitled “Chalk\, white\, as above!”\, because that was the comment frequently seen on core logs\, geologists’ description sheets and engineering geologists’ well logs. Just how much information were we losing because of this phrase? Over the last 30 years our understanding of chalk deposition\, and the environmental conditions which control it\, have fundamentally shifted. Hopefully I can convince you that this might be the case. \nView This Talk In The Members’ Section. \nThis replaced the scheduled talk on Critical Minerals from Geology to circular economy: A matter of national security planned to be given by Professor Kathryn Moore\, University of Exeter. This was due to bad weather. Kathryn’s talk will be rescheduled to a later date. \n 
URL:https://www.hertsgeolsoc.org.uk/event/stratigraphy-sedimentology-of-the-northern-european-chalks/
LOCATION:over Zoom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260108T193000
DTEND;TZID=UTC:20260108T213000
DTSTAMP:20260422T215213
CREATED:20251117T172816Z
LAST-MODIFIED:20260110T142925Z
UID:16271-1767900600-1767907800@www.hertsgeolsoc.org.uk
SUMMARY:Critical minerals from geology to circular economy: a matter of national security
DESCRIPTION:talk given by Associate Professor Kathryn Moore\, University of Exeter \nAbstract:\nWith the imminent release of a new Critical Minerals Strategy\, the UK is updating its approach to national security. In this lecture\, I will highlight the security issues that threaten critical mineral supply chains into the UK and into most countries. I will explain how mitigation of the risks requires ground – truthing\, based on an understanding of geology and material properties\, as well as wider socioenvironmental and political considerations. I will discuss how the needs of critical minerals production is a challenge in terms of skills requirement\, and why the discipline of geology has never been more important. \nUnfortunately this talk had to be cancelled due to communication issues caused by Storm Goretti. The talk will be rescheduled for a later date.
URL:https://www.hertsgeolsoc.org.uk/event/critical-minerals-from-geology-to-circular-economy-a-matter-of-national-security/
LOCATION:over Zoom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260212T193000
DTEND;TZID=UTC:20260212T213000
DTSTAMP:20260422T215213
CREATED:20251117T172940Z
LAST-MODIFIED:20260213T141351Z
UID:16273-1770924600-1770931800@www.hertsgeolsoc.org.uk
SUMMARY:The end-Triassic mass extinction and its aftermath
DESCRIPTION:talk given by Professor Paul Wignall\, School of Earth and Environment\, University of Leeds  \nThe end-Triassic marks one of the big 5 mass extinctions of the fossil record and is also probably one of the least understand. It has many things in common with the preceding mass extinction at the end of the Permian. Both are associated with the eruptions of vast flows of basalt lava and both occurred whilst the world’s continents were united into a supercontinent. The talk will focus on some of the latest discoveries and ideas regarding both the mass extinction event and its aftermath. Unlike some other crises\, the recovery from the crisis was remarkably quick in a geological sense and it of course paved the way for dinosaur to dominate the planet for 135 million years. \nView This Talk In The Members’ Section.
URL:https://www.hertsgeolsoc.org.uk/event/the-end-triassic-mass-extinction-and-its-aftermath/
LOCATION:over Zoom
CATEGORIES:Talks
ATTACH;FMTTYPE=image/jpeg:https://www.hertsgeolsoc.org.uk/wp-content/uploads/2026/01/PW-2nd-phase-of-extinction.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260409T194500
DTEND;TZID=UTC:20260409T214500
DTSTAMP:20260422T215213
CREATED:20251117T173607Z
LAST-MODIFIED:20260330T113717Z
UID:16280-1775763900-1775771100@www.hertsgeolsoc.org.uk
SUMMARY:49th Percy Evans Lecture: The Geology of the Lower Chess Valley & where does all that water go?
DESCRIPTION:given by Dr. Haydon Bailey\, HGS Chairman  \nnow postponed to a later date. \n 
URL:https://www.hertsgeolsoc.org.uk/event/49th-percy-evans-lecture-the-geology-of-the-lower-chess-valley-where-does-all-that-water-go/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260514T194500
DTEND;TZID=UTC:20260514T214500
DTSTAMP:20260422T215213
CREATED:20251117T173747Z
LAST-MODIFIED:20251118T204823Z
UID:16282-1778787900-1778795100@www.hertsgeolsoc.org.uk
SUMMARY:Geology of Stonehenge and the bluestone controversy
DESCRIPTION:talk given by Prof. Peter Worsley\, Emeritus Professor of Quaternary Geology\, University of Reading
URL:https://www.hertsgeolsoc.org.uk/event/geology-of-stonehenge-and-the-bluestone-controversy/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260611T194500
DTEND;TZID=UTC:20260611T214500
DTSTAMP:20260422T215213
CREATED:20251117T173937Z
LAST-MODIFIED:20251118T204901Z
UID:16284-1781207100-1781214300@www.hertsgeolsoc.org.uk
SUMMARY:The Chalk Sea Ecosystem Project
DESCRIPTION:talk given by Dr James Witts\, Senior Post Doctoral Researcher\, Natural History Museum London
URL:https://www.hertsgeolsoc.org.uk/event/the-chalk-sea-ecosystem-project/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260709T214500
DTEND;TZID=UTC:20260709T214500
DTSTAMP:20260422T215213
CREATED:20251117T174115Z
LAST-MODIFIED:20251118T204930Z
UID:16286-1783633500-1783633500@www.hertsgeolsoc.org.uk
SUMMARY:Researching the Puddingstone Book
DESCRIPTION:talk given by Gerald Lucy\, Essex Rock & Mineral Society & Mike Howgate\, AGS & HGS
URL:https://www.hertsgeolsoc.org.uk/event/researching-the-puddingstone-book/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260910T214500
DTEND;TZID=UTC:20260910T214500
DTSTAMP:20260422T215213
CREATED:20251117T174244Z
LAST-MODIFIED:20251118T205032Z
UID:16288-1789076700-1789076700@www.hertsgeolsoc.org.uk
SUMMARY:The Deep Geology beneath southern England (TBC)
DESCRIPTION:talk given by Dr. Chris Pullen\, Director\, CP Exploration
URL:https://www.hertsgeolsoc.org.uk/event/the-deep-geology-beneath-southern-england-tbc/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20261008T194500
DTEND;TZID=UTC:20261008T214500
DTSTAMP:20260422T215213
CREATED:20251117T174437Z
LAST-MODIFIED:20251118T205106Z
UID:16290-1791488700-1791495900@www.hertsgeolsoc.org.uk
SUMMARY:Book Presentation - The Meteorites
DESCRIPTION:given by Helen Gordon\, Hertfordshire University & Author
URL:https://www.hertsgeolsoc.org.uk/event/book-presentation-the-meteorites/
LOCATION:Redbourne Parish Centre\, The Park\, Redbourne\, Hertfordshire\, AL3 7LR\, United Kingdom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20261112T194500
DTEND;TZID=UTC:20261112T214500
DTSTAMP:20260422T215213
CREATED:20251117T211640Z
LAST-MODIFIED:20251117T211640Z
UID:16296-1794512700-1794519900@www.hertsgeolsoc.org.uk
SUMMARY:Alpine peaks and salt intrusions - Geological windows into Earth's mantle
DESCRIPTION:given by Dr. Jonathan Turner\, Geologists’ Association Field Guide Editor
URL:https://www.hertsgeolsoc.org.uk/event/alpine-peaks-and-salt-intrusions-geological-windows-into-earths-mantle/
LOCATION:over Zoom
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20261210T194500
DTEND;TZID=UTC:20261210T214500
DTSTAMP:20260422T215213
CREATED:20251117T211803Z
LAST-MODIFIED:20251124T110521Z
UID:16298-1796931900-1796939100@www.hertsgeolsoc.org.uk
SUMMARY:The history of geological thought and exploration of the geology of the Himalaya
DESCRIPTION:given by Dr. Danny Clarke-Lowes\, Director\, Nubian Consulting
URL:https://www.hertsgeolsoc.org.uk/event/the-history-of-geological-thought-and-exploration-of-the-geology-of-the-himalaya/
LOCATION:over Zoom
CATEGORIES:Talks
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