Preliminary Magnetic, Seismic, and Petrographic Investigations of a Possible Igneous Dike at the Rocky Mountain Arsenal, Denver, Colorado

Abstract

During the course of geologic consultation at the Rocky Mountain Arsenal, a vertical, east-west-trending tabular body, embedded in fine-grained clastic rocks, that is possibly an igneous dike, was reported. The preliminary geophysical tests showed that the rocks of the dike had neither magnetic nor seismic-velocity contrasts with the surrounding volcanic-rich sedimentary rocks. These data tend to indicate a nonigneous origin for the dike. Furthermore, the authors are not aware of any igneous intrusions in the Denver area that are more than a few kilometers east of the mountains and this would suggest that the dike seems to be out of its geologic environment.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA353024

Entities

People

  • C. H. Miller
  • D. S. Collins
  • J. K. Odum
  • R. M. Lindvall

Tags

DTIC Thesaurus Topics

  • Colorado
  • Contrast
  • Drainage Basins
  • Environment
  • Geological Surveys
  • Groundwater
  • Igneous Rocks
  • Magnetic Fields
  • Magnetic Properties
  • Measurement
  • Mountains
  • Rocks And Deposits
  • Rocky Mountains
  • Sedimentary Rocks
  • Seismic Velocity
  • United States
  • Water Resources

Fields of Study

  • Geology

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Environmental Remediation and Restoration.
  • Geotechnical Engineering.