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UID:87310-1760176800-1760198400@www.wgcg.co.uk
SUMMARY:Ask a Geologist - Under Dippy!
DESCRIPTION:The WGCG shall be holding a special Ask a Geologist session under Dippy at the Herbert Galleries\, Coventry. WGCG geological experts will be at hand to discuss geology in our everyday lives\, geological careers\, and geological science in general. Come along and examine specimens in super detail with our blue tooth microscope. We will have a number of rocks\, minerals and fossils on hand to be viewed and discussed\, a number of posters\, geological references and free brochures of nearby geology trails. \n\n\n\nThis is a drop in event\, no need to book ahead. \n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\nVenue:Herbert Art Gallery & Museumhttps://maps.app.goo.gl/3w57Gv8vonQH8sxT9
URL:https://www.wgcg.co.uk/event/ask-a-geologist-under-dippy-2/
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UID:91667-1760643000-1760648400@www.wgcg.co.uk
SUMMARY:AGM followed by a talk on the Warwick Sandstone - Xiang Yan
DESCRIPTION:The AGM followed by a talk on the Warwick Sandstone\, presented by Xiang Yan\, a PhD student at Imperial College London. \n\n\n\nReconstructing Triassic landscapes and rivers in the Warwick Sandstone \n\n\n\nThe Warwick Sandstone\, known more generally as the Helsby Sandstone Formation (HSF)\, was deposited by large rivers and aeolian dunefields approximately 240 million years ago during the mid-Triassic. The HSF is a part of the regionally significant Sherwood Sandstone Group (SSG) in the British Isles\, which has been previously explored for hydrocarbons\, groundwater and for geothermal energy. More recently\, this geologic unit has become a key target for carbon capture and storage (CCS) as a measure to combat climate change. Despite its societal importance\, and the release of new geological data\, a holistic depositional model for the HSF has not been created in the last 30 years\, and substantial uncertainties remain in the paleogeography for this time period. \n\n\n\nTo this end\, we present a new depositional map for the HSF across the British Isles\, tracing the fluvial system from its source region in north France\, into and beyond the Irish Sea\, where it is thought to have terminated. We begin by constructing a new\, integrated age model for the lower and Middle Triassic to correlate key rock units across the British Isles. We resolve existing paleogeographic discrepancies using existing sedimentological\, provenance and paleocurrent data. We then present sediment thickness maps and volumes for the first time. We further supplement our geological dataset with a synthesis of sediment mineralogy across the British Isles. Using the resources we have created\, we then present a unified\, updated sediment routing map for this Triassic fluvial system. Finally\, we use this information to evaluate the extent and nature of the mountainous source areas for the rivers of the HSF to place the river system in the wider context of northwest Europe. \n\n\n\nWe then present the results of a new field study in Warwickshire. Despite having excellent exposures\, the Warwick Sandstone has received less geological attention than equivalent units in Devon\, Cheshire and the Irish Sea\, and thus represent a gap in the paleo-river system. From outcrops at Guy’s Cliffe and Woodloes Quarry\, we made measurements of dunes\, bars and sediment grain size. From these measurements\, we derive hydrological characteristics of these palaeo-rivers\, including their depth and width\, their fluvial style (planform) and their sediment and water discharge. From this data\, we are able to visualise the rivers which deposited the Warwick Sandstone and their surroundings. \n\n\n\nOutcrop of the Helsby Sandstone Formation at Guy’s Cliffe\, Warwick\n\n\n\nVenue:St Francis Of Assisi RC Church\, 110 Warwick Rd\, Kenilworth CV8 1HLhttps://maps.app.goo.gl/9CGWRNdgFfttDKtd7
URL:https://www.wgcg.co.uk/event/agm-then-a-talk-on-the-warwick-sandstone-xiang-yan/
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