Stratigraphic Cross Sections of the Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado

Scientific Investigations Map 3511
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  • Document: Report (1.01 MB pdf) , HTML , XML
  • Sheet: Sheet (14.8 MB pdf)
  • Related Work: USGS data release— Digital Stratigraphic and Structural Grids of the Cretaceous Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado
  • Data Releases:
    • USGS data release - Formation tops data from the stratigraphic cross sections of the Lewis Shale in the eastern part of the Southwestern Wyoming Province, Wyoming and Colorado
    • USGS data release - Digital Stratigraphic and Structural Grids of the Cretaceous Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado
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Abstract

Three stratigraphic cross sections A–A', B–B', and C–C' were created for the Lewis Shale and associated strata in the eastern part of the Southwestern Wyoming Province of Wyoming and Colorado. The cross sections highlight 15 clinothems within the Lewis Shale, Fox Hills Sandstone, and Lance Formation progradational system (also referred to as the Lewis Shale system). Additionally, the cross sections indicate that multiple source areas were active at the same time during deposition of the Lewis Shale. Specifically, the north-to-southeast cross section A–A' demonstrates that the northern, sand-rich source was being deposited and onlapping onto an older, southern, mud-rich source.

Suggested Citation

Hearon, J.S., 2023, Stratigraphic cross sections of the Lewis Shale in the eastern part of the Southwestern Wyoming Province, Wyoming and Colorado: U.S. Geological Survey Scientific Investigations Map 3511, 1 sheet, 5-p. pamphlet, https://doi.org/10.3133/sim3511.

ISSN: 2329-132X (online)

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Table of Contents

  • Abstract
  • Introduction
  • Data and Methods
  • Paleogeography and Stratigraphy
  • Discussion
  • Summary
  • Acknowledgments
  • References Cited
Publication type Report
Publication Subtype USGS Numbered Series
Title Stratigraphic Cross Sections of the Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado
Series title Scientific Investigations Map
Series number 3511
DOI 10.3133/sim3511
Year Published 2023
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Central Energy Resources Science Center
Description Report: iv, 5 p.; 1 Sheet: 55.68 × 45.43 inches; Data Release
Country United States
State Colorado, Wyoming
Online Only (Y/N) Y
Google Analytic Metrics Metrics page
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