052319d

Dolomitized limestone (pink=calcite stained with alizarin red S; white and gray= dolomite), early dolomite formed under exposure surface at top of upward-shoaling cycle, Mississippian (Serpukhovian, Chesterian) Bangor Limestone, a few meters above a carbonate mound, near Moulton Alabama, thin-section photomicrograph,

052319c

Inversely graded breccia in Bangor Limestone (Mississippian, Serpukhovian, Chesterian), Vulcan Materials quarry near Scottsboro Alabama. Scale in inches.

052319b

Fossil soil, a paleosol, Mississippian Bangor Limestone, Vulcan Materials quarry, Scottsboro Alabama, scales in inches and centimeters.

Foundation of a Mississippian carbonate mound

Thin section photomicrograph (image 2.5 mm wide), part of an ancient carbonate sand shoal. Later, a small mound grew on top of the shoal. Ooid grainstone.

A picture of a very small fossil

Crinoid columnal in Mississippian fossil deposit, coated with two layers of calcite (dark rim). The fossil is in a former carbonate sand shoal that buried a mound made of corals, bryozoans, and crinoids. Photograph about 2 1/2 mm wide.

Trilobites are not guilty

A trace fossil once thought to have been made by trilobites could not have been.

Bioirrigation in Alph n. igen., arthropod cubichnia from the Mississippian Hartselle Sandstone of Alabama (USA)

David C. Kopaska-Merkel, Andrew K. Rindsberg
Geodinamica Acta
pp. 1-19 | DOI: 10.1080/09853111.2015.1108569