Dolomitization and Dolomite Neomorphism in the Back Reef Facies of the Bonneterre and Davis Formations (Cambrian), Southeastern Missouri
Abstract
The back reef subfacies were deposited on tidal flats and in shallow lagoons that existed in the St. Francois Mountains of southeast Missouri during late Cambrian time. They were subjected to a complex diagenetic history involving both early and late diagenetic dolomitization and dolomite neomorphism. Fine crystalline, planar dolomite was formed during early diagenetic dolomitization of the cryptalgalaminate subfacies by a fluid approaching seawater composition. Coarse crystalline, nonplanar dolomite was formed as a result of neomorphism of pre-existing planar dolomite and dolomitization of peloid mudstones, after burial, accompanying mineralization in southeast Missouri.
Recommended Citation
J. M. Gregg and K. L. Shelton, "Dolomitization and Dolomite Neomorphism in the Back Reef Facies of the Bonneterre and Davis Formations (Cambrian), Southeastern Missouri," Journal of Sedimentary Petrology, vol. 60, no. 4, pp. 549 - 562, Society of Economic Paleontologists and Mineralogists, Jul 1990.
The definitive version is available at https://doi.org/10.1306/212F91E2-2B24-11D7-8648000102C1865D
Department(s)
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Bonneterre Formation; Cambrian; Davis Formation; Dolomite; Lagoon; Limestone; Mineralization; Neomorphism; Sea Water; USA, Missouri
Geographic Coverage
Southeastern Missouri
Time Period
Cambrian
International Standard Serial Number (ISSN)
0022-4472
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1990 Society of Economic Paleontologists and Mineralogists, All rights reserved.
Publication Date
01 Jul 1990
