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Geochemistry of minor elements in the Monterey Formation, California; seawater chemistry of deposition

Professional Paper 1566

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Abstract

Approximately 24 samples of the Monterey Formation, Southern California, have been analyzed for their major-element oxide and minor-element content. These analyses allow identification of a detrital fraction, composed of terrigenous quartz, clay minerals, and other Al silicate minerals, and a marine fraction, composed of biogenic silica, calcite, dolomite, organic matter, apatite, and minor amounts of pyrite. The minor-element contents in the marine fraction alone are interpreted to have required, at the time of deposition, a high level of primary productivity in the photic zone and denitrifying bacterial respiration in the bottom water.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geochemistry of minor elements in the Monterey Formation, California; seawater chemistry of deposition
Series title:
Professional Paper
Series number:
1566
Edition:
-
Year Published:
1995
Language:
ENGLISH
Description:
41 p.