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Language
English (en)
Date of Award
5-15-2007
Degree Type
Restricted Access Thesis
Degree Name
Master of Arts (AM/MA)
Abstract
Sediments in caves preserve clues to cave history, landscape evolution, and past climate and biological activity. This project contributes the first known comprehensive chemical compositional analysis of two prevalent "types" of sediment found in Missouri caves: (1) tan-colored silty sediments common in caves near major rivers, believed to be reworked glacial loess; and (2) oddly distributed, fine-grained red clays of uncertain significance first popularized by J H Bretz over 60 years ago. Chemical data from cave sediments and presumably related surface materials, loess and "residuum," were combined with new and existing mineralogic analyses to study the character, variability, and origin of the cave sediments. Most samples were collected within 60 miles of Saint Louis County, Missouri. Over 90 field-classified sediments were analyzed using XRF spectroscopy; a subset of -30 samples was analyzed for bulk mineralogy using powder XRD
Recommended Citation
Lippmann, Jennifer Lynne, "Geochemistry of Reworked Loess and Red Clays in Missouri Caves" (2007). Retrospective Theses and Dissertations. 48.
https://openscholarship.wustl.edu/etd_restrict/48
Comments
Permanent URL: https://doi.org/10.7936/K78W3CQS Print version available in library catalog at http://catalog.wustl.edu:80/record=b3396539~S2