The Lias Group or Lias is a lithostratigraphic unit (a sequence of rock strata ) found in a large area of western Europe, including the British Isles , the North Sea , the Low Countries and the north of Germany . It consists of marine limestones , shales , marls and clays .
11-536: (Redirected from Liassic ) [REDACTED] Look up Lias , lias , -lias , Liassic , or liassic in Wiktionary, the free dictionary. Lias may refer to: Geology [ edit ] Lias Group , a lithostratigraphic unit in western Europe Lias Formation , a geologic formation in France Lias (period) , the 19th-century name for
22-647: A gene that in humans encodes the protein lipoic acid synthetase See also [ edit ] Lyas , a commune in southern France Lia (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Lias . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Lias&oldid=1158237573 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Hidden categories: Short description
33-492: Is different from Wikidata All article disambiguation pages All disambiguation pages Lias Group Lias is a Middle English term for hard limestone, used in this specific sense by geologists since 1833. In the past, geologists used Lias not only for the sequence of rock layers, but also for the timespan during which they were formed. It was thus an alternative name for the Early Jurassic epoch of
44-875: The Inferior Oolite in most of England and the Dogger Formation or Ravenscar Group in the Cleveland Basin. In some areas there is a stratigraphic hiatus , and the rocks are overlain by Cretaceous marine sediments. There are restricted outcrops of Lias rocks on the west coast of Scotland where, in the Sea of the Hebrides depositional basin on Skye , Raasay and Mull , the Broadford Beds Formation , Pabay Shale Formation and overlying Scalpay Sandstone Formation are assigned to
55-613: The geologic timescale . It is now more specifically known that the Lias is Rhaetian to Toarcian in age (over a period of c. 20 million years between 200 to 180 million years ago ) and thus also includes a part of the Triassic . The use of the name "Lias" for a unit of time is therefore slowly disappearing. In southern England , the Lias Group is often divided into Lower, Middle and Upper subgroups. In Southern England
66-525: The Early Jurassic epoch, named after certain rocks of the era People [ edit ] Godfrey Lias , British author Mohd Shamsudin Lias (born 1953), Malaysian politician Lias Andersson (born 1998), Swedish hockey player Other uses [ edit ] Lias (journal) , title of the Journal of Early Modern Intellectual Culture and its Sources Lias, Gers , a commune of
77-520: The Gers département in France LIAS (gene) , a gene that in humans encodes the protein lipoic acid synthetase See also [ edit ] Lyas , a commune in southern France Lia (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Lias . If an internal link led you here, you may wish to change
88-743: The Lias is divided into the following formations (from top to base): In the East Midlands Shelf the Lias is divided into the following formations (from top to base): In the Cleveland Basin in Yorkshire the Lias is divided into the following formations (from top to base): In South Wales only the Blue Lias is present. The Lias is underlain by the Late Triassic Penarth Group , and overlain by
99-403: The era People [ edit ] Godfrey Lias , British author Mohd Shamsudin Lias (born 1953), Malaysian politician Lias Andersson (born 1998), Swedish hockey player Other uses [ edit ] Lias (journal) , title of the Journal of Early Modern Intellectual Culture and its Sources Lias, Gers , a commune of the Gers département in France LIAS (gene) ,
110-425: The 💕 [REDACTED] Look up Lias , lias , -lias , Liassic , or liassic in Wiktionary, the free dictionary. Lias may refer to: Geology [ edit ] Lias Group , a lithostratigraphic unit in western Europe Lias Formation , a geologic formation in France Lias (period) , the 19th-century name for the Early Jurassic epoch, named after certain rocks of
121-419: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Lias&oldid=1158237573 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Lias From Misplaced Pages,
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