Peter A. Scholle's A Color Guide to the Petrography of Carbonate Rocks: Grains, PDF

By Peter A. Scholle

ISBN-10: 0891813586

ISBN-13: 9780891813583

This quantity expands and improves the AAPG 1978 vintage, a colour Illustrated consultant to Carbonate Rock parts, Textures, Cements, and Porosities (AAPG Memoir 27). Carbonate petrography could be very complex. altering assemblages of organisms via time, coupled with the randomness of thin-section cuts via complicated shell kinds, upload to the trouble of deciding on skeletal grains. in addition, simply because many fundamental carbonate grains are composed of volatile minerals (especially aragonite and high-Mg calcite), diagenetic alteration often is kind of broad 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 contains a wide selection of examples of in most cases encountered skeletal and nonskeletal grains, cements, materials, and porosity varieties. It contains wide new tables of age distributions, mineralogy, morphologic features, environmental implications and keys to grain id. It additionally features a variety of noncarbonate grains, that take place as accent minerals in carbonate rocks or that could supply very important biostratigraphic or paleoenvironmental info in carbonate strata. With this consultant, scholars and different staff with little formal petrographic education may 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 info for A Color Guide to the Petrography of Carbonate Rocks: Grains, Textures, Porosity, Diagenesis (AAPG Memoir) (Aapg Memoir)

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Texas A moderately well preserved phylloid alga showing several characteristic features — filled primary tubules preserved along some of the grain margins, a flared end to one of the plates, and somewhat irregular grain shapes and sizes. These grains clearly were originally aragonitic, and the structure was preserved only through filling of tubules and or outlining of external forms by micritic sediment or cement. 5 mm Up. , Texas Another example of a fairly well preserved phylloid alga. Extensive infilling of marginal tubules with micritic sediment or aphanocrystalline cement has given the more calcified grain margin a characteristic scalloped appearance.

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.

Phanerozoic Stromatolites: New York, Springer-Verlag, p. 45-59. , 1977, Die Ultrastrukturen des Kalkalgenskelettes: Palaeontographica, Abteilung B (Paläophytologie), v. 160 (4-6), p. 69-128. , 1977, Fossil Algae: Recent Results and Developments: New York, Springer-Verlag, 375 p. Ginsburg, R. , R. Rezak, and J. L. Wray, 1971, Geology of Calcareous Algae: Short Course Notes, Comparative Sedimentology Laboratory, University of Miami, 62 p. James, N. , J. L. Wray, and R. N. Ginsburg, 1988, Calcification of encrusting aragonitic algae (Peyssonneliaceae): implications for the origin of Late Paleozoic reefs and cements: Journal of Sedimentary Petrology, v.

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A Color Guide to the Petrography of Carbonate Rocks: Grains, Textures, Porosity, Diagenesis (AAPG Memoir) (Aapg Memoir) by Peter A. Scholle

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