ANALYSIS OF SHALE MICROFABRIC AND ITS RELATIONSHIPS TO MINERALOGY AND STRUCTURAL FAILURE. FINAL REPORT

Although shales are by far the most common sedimentary rock and comprise approximately 70% of the surface-exposed rocks in Kansas, there has been less research on shales regarding their fine-scale petrofabric as it relates to engineering properties. Most slope failures that occur in highway construction involve sections that contain significant amounts of shale. Concentrations of specific clay minerals, such as kaolinite or montmorillinite, within shales can greatly reduce their structural integrity. Analyses performed on cores and outcrop samples of the fine-scale petrofabric in conjunction with the general mineralogical distributions shows that specific types of shales exhibit specific petrofabric and furthermore that such shales tend to occur in specific geographic areas of the state as related to their occurrence in the geological rock record. As a pilot project, this report concentrates on shales that occur within the Douglas Group of Kansas.

  • Corporate Authors:

    Kansas State University, Manhattan

    College of Engineering, Engineering Experiment Station
    Manhattan, KS  United States  66506

    Kansas Department of Transportation

    Docking State Office Building
    Topeka, KS  United States  66612
  • Authors:
    • Archer, A W
  • Publication Date: 1992-8

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: 62 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00625335
  • Record Type: Publication
  • Report/Paper Numbers: K-TRAN: KSU-91-6
  • Contract Numbers: KSU-91-6 (104)
  • Files: TRIS, STATEDOT
  • Created Date: Nov 17 1993 12:00AM