{"id":{"repo_id":"wustl","oai_identifier":"oai:openscholarship.wustl.edu:etd_restrict-1047"},"canonical_url":"https://search.dev.ndltd.org/etd/wustl/oai:openscholarship.wustl.edu:etd_restrict-1047","repository":{"repo_id":"wustl","name":"Washington University in St. Louis","base_url":"https://openscholarship.wustl.edu/do/oai/"},"display":{"title":"Geochemistry of Reworked Loess and Red Clays in Missouri Caves","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","abstract_html":"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","abstract_has_math":false,"creators":["Lippmann, Jennifer Lynne"],"institution":null,"degree_name":"Master of Arts (AM/MA)","degree_level":"Restricted Access Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2007,"date_issued":"2007-05-15T07:00:00Z","date_published":"2007-05-15T07:00:00Z","updated_at":"2026-07-24T06:12:01Z","subjects":[],"languages":["English (en)"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.7936/K78W3CQS"],"render_values":[{"text":"https://doi.org/10.7936/K78W3CQS","href":"https://doi.org/10.7936/K78W3CQS","code":true}]}]},"links":{"outbound_url":"https://openscholarship.wustl.edu/etd_restrict/48","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Lippmann, Jennifer Lynne"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_level","label":"Degree Level","values":["Restricted Access Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Arts (AM/MA)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English (en)"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://openscholarship.wustl.edu/etd_restrict/48"]},{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.7936/K78W3CQS"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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"]},{"key":"dc:title","label":"Title","values":["Geochemistry of Reworked Loess and Red Clays in Missouri Caves"]}]}],"canonical_facts":{"dc:creator":["Lippmann, Jennifer Lynne"],"dc:description.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"],"dc:identifier":["https://openscholarship.wustl.edu/etd_restrict/48"],"dc:identifier.doi":["https://doi.org/10.7936/K78W3CQS"],"dc:language":["English (en)"],"dc:title":["Geochemistry of Reworked Loess and Red Clays in Missouri Caves"],"thesis:degree_level":["Restricted Access Thesis"],"thesis:degree_name":["Master of Arts (AM/MA)"]},"updated_at":"2026-07-24T06:12:01Z"}