By Peter A. Scholle
This quantity expands and improves the AAPG 1978 vintage, a colour Illustrated advisor to Carbonate Rock components, Textures, Cements, and Porosities (AAPG Memoir 27). Carbonate petrography may be very complex. altering assemblages of organisms via time, coupled with the randomness of thin-section cuts via advanced shell types, upload to the trouble of making a choice on skeletal grains. additionally, simply because many basic carbonate grains are composed of risky minerals (especially aragonite and high-Mg calcite), diagenetic alteration in general is sort of large in carbonate rocks. the range of inorganic and biogenic carbonate mineralogy via time, despite the fact that, complicates prediction of styles of diagenetic alteration.This ebook is designed to aid care for such demanding situations. It incorporates a big choice of examples of as a rule encountered skeletal and nonskeletal grains, cements, materials, and porosity varieties. It comprises broad new tables of age distributions, mineralogy, morphologic features, environmental implications and keys to grain identity. It additionally contains a variety of noncarbonate grains, that take place as accent minerals in carbonate rocks or that can supply very important biostratigraphic or paleoenvironmental details in carbonate strata. With this consultant, scholars and different employees with little formal petrographic education could be in a position to learn skinny sections or acetate peels below the microscope and interpret the most rock components and their depositional and diagenetic historical past.
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Additional resources for A Color Guide to the Petrography of Carbonate Rocks: Grains, Textures, Porosity, Diagenesis (AAPG Memoir) (Aapg Memoir)
111-120. Logan, B. , R. Rezak, and R. N. Ginsburg, 1964, Classification and environmental significance of algal stromatolites: Journal of Geology, v. 72, p. 68-83. Macintyre, I. , and R. P. Reid, 1995, Crystal alteration in a living calcareous alga (Halimeda): implications for studies in skeletal diagenesis: Journal of Sedimentary Research, Section A: Sedimentary Petrology and Processes, v. A65, p. 143-153. Marszalek, D. , 1971, Skeletal ultrastructure of sediment producing green algae, in O. Johari, and I.
5 mm CHAPTER 1: CALCIMICROBES AND CALCAREOUS ALGAE Pennsylvanian limestone, west of Fort Worth, Texas A view of two probable Archaeolithophyllum sp. plates (the same genus as shown in the previous photograph). These red algae have fairly well-preserved internal cellular structure. These examples, however, are not encrusting but rather had the free-standing, platy morphology typical of phylloid algae. , from the same thin section depicted in the previous photograph. Note the excellent preservation of internal cellular structure (which does not closely resemble the marginal tubules of the phylloid algae depicted earlier).
A. Smith, 1987, Kingdom Protista, in R. S. Boardmann, A. H. Cheetham, and A. J. , p. 67-106. Culver, S. , 1987, Foraminifera, in J. H. , Fossil Prokaryotes and Protists: Notes for a Short Course: University of Tennessee, Department of Geological Sciences, Studies in Geology 18, p. 169-212. Folk, R. , and F. L. Lynch, 2001, Organic matter, putative nannobacteria and the formation of ooids and hardgrounds: Sedimentology, v. 48, p. 215-229. Glaessner, M. , 1963, Major trends in the evolution of the Foraminifera, in G.
A Color Guide to the Petrography of Carbonate Rocks: Grains, Textures, Porosity, Diagenesis (AAPG Memoir) (Aapg Memoir) by Peter A. Scholle