Second Abden Shale, Level 110 (Carboniferous of the United Kingdom)

Where: Scotland, United Kingdom (56.1° N, 3.2° W: paleocoordinates 1.8° S, 2.5° E)

• small collection-level geographic resolution

When: Second Abden Shale Formation, Brigantian (336.0 - 326.4 Ma)

• Brigantian age was shown by Brindley and Spinner 1989, Proc. Yorkshire Geol. Soc. 47:215-231

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, silty, sandy shale

• Sediments were deposited in a gap between periods of volcanic activity, the series represents a transgression from tidal-flat to subtidal environment.
• thin sections of the shale show it to consist predominantly of clay minerals with varying admixtures of sand and silt sized particles, normally quartz but with some chlorite and feldspar...interlaminations of fine sandy material in their more argillaceous basic substance.

Collection methods: bulk, chemical, mechanical, peel or thin section, sieve,

Primary reference: L. Ferguson. 1962. The paleoecology of a Lower Carboniferous marine transgression. Journal of Paleontology 36:1090-1107 [J. Alroy/M. Sommers/J. Ju]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 6448: authorized by John Alroy, entered by Mike Sommers on 02.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Textulariina
 Ammodiscoidea - Ammodiscidae
Glomospira sp. Rzehak 1895
Fusulinina
 Endothyroidea - Loeblichiidae
 Endothyroidea - Endothyridae
Ostracoda
 Podocopida - Bairdiidae
 Platycopida - Paraparchitidae
Strophomenata
 Productida - Echinoconchidae
 Productida - Productidae
Rhynchonellata
 Spiriferida - Spiriferidae
Polychaeta
 Sabellida - Serpulidae
Spirorbis spp. Daudin 1800
Bivalvia
 Pectinida - Entoliidae
 Pectinida - Pterinopectinidae
Stenolaemata
 Fenestrida - Fenestellidae
 Cryptostomata - Arthrostylidae
Heminematopora sp. Bassler 1952
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
 Coleoloida -
Rhodophyceae
  - Aoujgaliaceae