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Creechbarrow Hill (Eocene of the United Kingdom)

Where: England, United Kingdom (50.7° N, 2.1° W: paleocoordinates 48.5° N, 6.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: MP16 zone, Creechbarrow Limestone Formation, Bartonian (40.4 - 37.2 Ma)

• This is the only known outcrop of the Creechbarrow Limestone, ranges in thickness from 0-16 m and lies above unnamed sands and clays

•"Chreechbarrow Hill is dated to mammal Paleogene Reference Level MP16 and the lautricense-siderolithicum Zone, by comparison with continental European faunas" (Benton et al., 2005)

• formation-level stratigraphic resolution

Environment/lithology: marine; oncoidal, shelly/skeletal, yellow, sandy marl and intraclastic, shelly/skeletal, yellow, silty, sandy marl

• in general it's a buff marl containing variable sized limestone clasts, the limestone (sensu stricto) is a cream coloured, mottled with buff, soft to hard, massive micritic limestone with drusy sparite, scattered angular to subangular quartz grains up to 1mm in diameter, oncoliths often containing [molluscs and vertebrate remains]. Hard limestone in recent excavations was mainly encountered in the basal rubbly soid layer (A).

•buff marl: a buff calcareous silty clay with abundant angular to subangular quartz grains up to 1 m m in diameter and containing limestone clasts. It also contains oncoliths often containing [mollusc] and vertebrate remains and derived silicified Cretacous bryozoans.

Size classes: macrofossils, mesofossils

Preservation: cast, trace

Primary reference: W. H. Hudleston. 1902. Creechbarrow: An Essay in Purbeck Geology. Proceedings of the Dorset Natural History Museum and Antiquarian Field Club 23:146-190 [J. Alroy/E. Leckey/M. Uhen] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39014: authorized by John Alroy, entered by Erin Leckey on 18.05.2004, edited by Jelle Zijlstra, Terri Cleary and Philip Mannion

Creative Commons license: CC BY (attribution)