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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 39 (1955)

Issue: 4. (April)

First Page: 484

Last Page: 492

Title: Physical Limits of Glauconite Formation

Author(s): Preston E. Cloud, Jr. (2)


Available records indicate that the formation of glauconite requires marine water near normal salinity, reducing conditions, and appropriate source materials. It is favored by high organic content of the bottom sediments in which it forms, and by slow or negative sedimentation. It may form under a fairly wide but not unlimited range of temperatures and depths. This variety of limiting factors combines with the general ease of field recognition to make glauconite much more useful in paleoecology than other accessory minerals which are so far known to provide clues to depositional environment.

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