Bureau of Economic Geology

Gulf Coast Carbon Center


Repetto Formation, Los Angeles Basin (16)

Comments on Geologic Parameters

16 Rock Mineralogy:

Repetto mineralogy is complex, reflecting its complicated depositional history. The coarse-grained fraction, found in pebbles and granules, consists of igneous and metamorphic rock fragments, with minor amounts of sedimentary rock fragments. Carbonate materials, primarily in the form of foraminiferal tests, and glauconite are also present in the basin (Conrey, 1967). However, quartz and feldspar are predominant over calcite and other carbonate minerals in the Repetto Formation.

16 Reference:

Conrey, B. L., 1967, Early Pliocene sedimentary history of the Los Angeles Basin, California: California Division of Mines and Geology Special Report 93, 63 p.

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RI0283

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