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- [[Image:P948977.jpg|thumb|right|300px|Thickness variations in the Lower Lias. The area between Radstock and Bath (after Donovan and Kellaway, 1984). (P9 [[Image:P211323.jpg|thumb|right|300px|Cliff in Blue Lias (Lower Lias) at Kilve, north Somerset (A11689). (P211323)]] ...19 KB (2,957 words) - 13:27, 30 January 2018
- ==Middle Lias== ...major sedimentary rhythm that commenced with the thick argillaceous Lower Lias succession. ...5 KB (864 words) - 13:29, 30 January 2018
- [[Image:P948980.jpg|thumb|right|300px|Diagrammatic section of the Upper Lias to illustrate facies changes across the region. The top of the striatulum S ...ng thickness variations and dominant lithological composition of the Upper Lias. (P948981)]] ...14 KB (2,182 words) - 13:34, 30 January 2018
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- ...ith associated BGS studies of the swelling and shrinkage properties of the Lias Group. ...gineers, planners, scientists, and other interested parties concerned with Lias Group materials. ...2 KB (326 words) - 14:29, 28 May 2019
- [[Image:P802430.jpg|thumb|300px|Jurassic Lias limestone cliffs at Nash Point, South Glamorgan. P802430.]] ...is present in a limited area between Cardiff and Porthcawl. Here the Blue Lias Formation comprises up to 90 m of thinly bedded argillaceous marls and calc ...1 KB (157 words) - 08:34, 18 February 2016
- ...time. From that period onwards, successive waves of ammonites entered the Lias seas in large numbers, and spread rapidly over wide areas. Some families su ...cal rather than a lithostratigraphical division. However, the Lower/Middle Lias boundary thus defined rarely coincides with a change in lithology and the r ...4 KB (598 words) - 13:27, 30 January 2018
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 20]] ...221 bytes (27 words) - 14:31, 28 May 2019
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 01]] ...301 bytes (41 words) - 14:29, 28 May 2019
- [[File:P805313.jpg|thumb|Step faults in Middle Lias Limestone at Harby. BGS image P805313.]] [[File:P805314.jpg|thumb|Step faults in Middle Lias Limestone at Harby. BGS image P805314.]] ...5 KB (750 words) - 11:22, 15 September 2020
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 18]] ...1 KB (148 words) - 14:31, 28 May 2019
- ...he Bristol Channel and in the Gloucester-Worcester area, over 500 m of the Lias is preserved. These rocks generally occur within 100 m of the surface acros ...–brown Mercia Mudstone is faulted against the paler Jurassic rocks of the Lias. P902607.]] ...3 KB (563 words) - 16:31, 18 April 2016
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 17]] ...531 bytes (66 words) - 14:31, 28 May 2019
- ==Middle Lias== ...major sedimentary rhythm that commenced with the thick argillaceous Lower Lias succession. ...5 KB (864 words) - 13:29, 30 January 2018
- | Lias,Lower Jurassic | Lias Group ...2 KB (204 words) - 12:07, 10 August 2015
- | Lias Group† ...s Group undivided encompasses the old divisions of Lower, Middle and Upper Lias. Modern terminology that can be applied to the strata encountered in these ...3 KB (267 words) - 15:02, 28 July 2015
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 19]] ...3 KB (391 words) - 14:31, 28 May 2019
- * Lias Group (LIAS) ...2 KB (267 words) - 16:55, 16 February 2017
- ===Lias Group (LI)=== ...in the north of the area beyond the Kingsclere Anticline only 60 m of the Lias Group is present.. ...6 KB (926 words) - 15:21, 28 July 2015
- [[Category:OR/12/032 Engineering Geology of British rocks and soils - Lias Group | 12]] ...754 bytes (96 words) - 14:30, 28 May 2019
- | Lias Group† ...s Group undivided encompasses the old divisions of Lower, Middle and Upper Lias. Modern terminology that can be<br>applied to the strata encountered in the ...3 KB (382 words) - 08:47, 4 December 2015
- ...D model looking from SW to NE. The main units being Triassic rocks (pink), Lias Group (grey/brown) through to the superficial deposits of Tidal Flats (blue ...1,003 bytes (146 words) - 16:55, 16 February 2017
- .... Only minor quantities of water are obtained from the White Lias and Blue Lias Limestones, while in the overlying thick clays saline waters, such as those Some water supplies are obtained from the Upper Lias sands, for example from the Midford Sands in the Bath district; but on the ...6 KB (981 words) - 08:37, 11 December 2019
- ...mouth. Examine sections of Greensand, Gault, and subdivisions of the Lower Lias from the zone of ''Ammonites raricostatus ''to that of ''A. angulatus. ''Re ...ite Beds, and zone of ''Ammonites capricornus), ''and lower beds of Middle Lias (zone of ''Ammonites ' margaritatus). ''Proceed along coast to Seatown, "An ...6 KB (992 words) - 09:15, 13 September 2020