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Cotham Marble

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Journal Article
Journal: PALAIOS
Published: 01 November 2015
PALAIOS (2015) 30 (11): 802–805.
...M.J. Mayall; V.P. Wright email: mmayall@imperial.ac.uk 3 5 2015 13 8 2015 Copyright © 2015, SEPM (Society for Sedimentary Geology) 2015 Ibarra et al. (2014) have presented an interesting paper on the Cotham Marble, an enigmatic microbialite from the Rhaetian...
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Journal Article
Journal: PALAIOS
Published: 01 November 2015
PALAIOS (2015) 30 (11): 806–809.
...YADIRA IBARRA; FRANK A. CORSETTI; SARAH E. GREENE; DAVID J. BOTTJER Copyright © 2015, SEPM (Society for Sedimentary Geology) 2015 Mayall and Wright question interpretations in our microfacies analysis of the Cotham Marble microbialites ( Ibarra et al. 2014 ) in which we primarily...
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Journal Article
Journal: PALAIOS
Published: 01 January 2014
PALAIOS (2014) 29 (1): 1–15.
... link them to the end-Triassic extinction event. The bioherms—known regionally as the Cotham Marble—occur as discrete ∼20-cm-thick, decimeter- to meter-scale mounds, and display at least five growth phases that alternate between laminated and dendritic mesofabrics. Cross sections parallel to bedding...
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<b>Cotham</b> <b>Marble</b> samples from well outside the Bristol area.  A ) Double ‘Land...
in > PALAIOS
Published: 01 November 2015
Fig. 1.— Cotham Marble samples from well outside the Bristol area. A ) Double ‘Landscape’ sample from Culverhole Point, Devon, (∼ 85 km south of Bristol) showing the common phases of the Cotham Marble (L = Laminated, D = Dendritic); British Geological Survey sample MR_5769 (the sample
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Dendrolitic phases of the <b>Cotham</b> <b>Marble</b>.  A ) High-resolution scan of the t...
in > PALAIOS
Published: 01 November 2015
Fig. 3.— Dendrolitic phases of the Cotham Marble. A ) High-resolution scan of the typical ‘arborescent’ phase of the Cotham Marble; Bristol Museum and Art Gallery, number Cb 4127. B ) Photomicrograph of dendrolitic structure highlighting the various spar-filled ovoid structures. Both samples
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The five most common phases of the <b>Cotham</b> <b>Marble</b> labeled L (Laminated) and ...
in > PALAIOS
Published: 01 January 2014
Fig. 2.— The five most common phases of the Cotham Marble labeled L (Laminated) and D (Dendritic). Specimens A–C are from localities near the Cotham House in Bristol, and specimen D is from Manor Farm Quarry near Aust. Arrows indicate potential coeval laminae.
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Bedding plane view of the <b>Cotham</b> <b>Marble</b>.  A)  Sample indicates the dendroli...
in > PALAIOS
Published: 01 January 2014
Fig. 4.— Bedding plane view of the Cotham Marble. A) Sample indicates the dendrolite fabric and adjacent hollow fill; Bristol Museum and Art Gallery, number Cb 4130. B) Polished horizontal cross section through D1 showing the interconnected network of dendrolite separated by polygonal-shaped
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Bristol archipelago map (top of the <b>Cotham</b> Member). The map shows the locat...
Published: 25 February 2021
. Fissure fill localities and described Cotham Marble localities are marked with red and purple dots, respectively, and built-up areas are outlined in black.
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Map of the southwestern United Kingdom showing the locations of the <b>Cotham</b> ...
in > PALAIOS
Published: 01 January 2014
Fig. 1.— Map of the southwestern United Kingdom showing the locations of the Cotham Marble microbialites. Numbered locations contain examples examined in this study. Locations a–c ( Richardson 1911 ); Locations d and h ( Hamilton 1961 ); Location e ( Hesselbo et al. 2004 ); Location f ( Duffin
Journal Article
Published: 01 May 2004
Journal of the Geological Society (2004) 161 (3): 365–379.
... ( Darwinula ) ( Boomer et al . 1999 ; R. J. Porter, pers. comm.). A biohermal limestone known as the Cotham Marble is a prominent marker at or near the top of the Cotham Member, particularly in the Bristol area. The limestone has an algal stromatolitic component ( Hamilton, 1961 ) but is also made up from...
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Three examples of slabbed sections cut across the digitate part of the Coth...
in > PALAIOS
Published: 01 November 2015
Fig. 3.— Three examples of slabbed sections cut across the digitate part of the Cotham Marble clearly showing abundant cross sections of Micotubus communis (lighter brown micritic walls). Sample from the Cribbs Causeway area, Bristol.
Journal Article
Published: 25 February 2021
Journal of the Geological Society (2021) 178 (3): jgs2020-158.
.... Fissure fill localities and described Cotham Marble localities are marked with red and purple dots, respectively, and built-up areas are outlined in black. ...
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Journal Article
Published: 01 September 2008
Journal of the Geological Society (2008) 165 (5): 988–992.
... in the SW UK ( Hamilton 1961 ; Warrington & Ivimey-Cook 1992 ), marking the peak of the carbon-isotope excursion mentioned above ( Hesselbo et al . 2004 ). The best-documented examples (comprising the ‘Cotham’ or ‘Landscape’ Marble of the Bristol district, western England) are typically fine-grained...
Journal Article
Published: 01 August 1979
Quarterly Journal of Engineering Geology and Hydrogeology (1979) 12 (3): 205–217.
... with Cowstones ~ Gault ~ Unconformity ~] L ower !_ias Shales with Beef JURASSIC 9 [~ Whi te Liaa end Cotham Marble RHAETIC [~ Rhaetavioula contor ta Shales ~ Keuper Mar ls Tea Green Mar ls Pass~Je Beds TRIASSIC Keuper Mar ls Red & Variegated Mar ls Comminuted and mlxe~ slipped maternal [~ Mainly derived f rom Fo...
Journal Article
Journal: PALAIOS
Published: 01 October 2003
PALAIOS (2003) 18 (4-5): 378–387.
... , M.R. , ed., Stromatolites : Elsevier , New York , p. 435 – 445 . Hamilton , D. 1961 . Algal growths in the Rhaetic Cotham marble of southern England : Palaeontology , v. 4 , p. 324 - 333 . Heaman , L.M. , and Grotzinger , J.P. , 1992 . 1.08 Ga diabase sills...
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Journal Article
Published: 01 January 2012
Journal of Paleontology (2012) 86 (1): 19–24.
... . Zeuner F. E. 1939 . Fossil Orthoptera Ensifera . British Museum Natural History , London . The oldest possible orthopteran tympanum is from the Rhaetian (Late Triassic) Cotham Marble at Aust Cliff, Avon, U.K. The specimen is an isolated leg...
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Journal Article
Journal: PALAIOS
Published: 01 April 2016
PALAIOS (2016) 31 (4): 141–160.
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Journal Article
Published: 01 July 2004
Geological Magazine (2004) 141 (4): 471–504.
... ), close to exposed Old Red Sandstone ( Arkell, 1933 ). The overlying Cotham Member of the Lilstock Formation (‘Cotham Beds’) consists of pale cream, calcareous mudstones and includes the famous stromatolitic ‘Cotham Marble’. Close to the Mendips, these beds contain finely ripple-laminated units...
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Series: Geological Society, London, Engineering Geology Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.ENG.2006.021.01.06
EISBN: 9781862393837
... of the Triassic. Within this group are found the mudstones and shales of the Westbury Formation and Cotham Member. In the Midlands these tend to form escarpments between the Langport Member and the Blue Lias. The Westbury Formation has in part formed the shear plane of the famous Bindon, East Devon, coastal...
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