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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract


Journal of Sedimentary Petrology
Vol. 21 (1951)No. 3. (September), Pages 127-130

Stages of Textural Maturity in Sedimentary Rocks

Robert L. Folk

ABSTRACT

Four stages of textural maturity in sediments are defined by the occurrence of three sequential events (1) removal of clays, (2) sorting of the sand fraction, and (3) attainment of high roundness. A binomial terminology is introduced wherein the term denoting textural maturity is prefixed to the rock-composition name, obtained from the mineralogy of the silt-sand-gravel portion (e.g., "submature graywacke").


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