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The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
Calcite Spherulites from the Morrison Formation, Wyoming: NOTES
Malcolm P. Weiss, Henry E. Wenden
ABSTRACT
In the northeastern Big Horn Basin, a thin lens of spherulitic limestone occurs locally in a red non-marine shale which is both overlain and underlain by limy sandstone. Calcite spherulites form 85 percent of the rock. The interstitial material is a mature detritus composed chiefly of clays and quartz. The spherulitic limestone is considered to have formed in an alkaline flood-plain lake with little detrital contamination.
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