Cover Image

Relationship of Precambrian quartziteschist sequence along Coal Creek to Idaho Springs Formation, Front Range, Colorado /

Bibliographic Details
Main Authors: Wells, John David, 1926-, Sheridan, Douglas M., 1921- (Author), Albee, Arden Leroy, 1928- (Author)
Corporate Author: U.S. Atomic Energy Commission
Format: Government Document Book
Language:English
Published: Washington : U.S. Govt. Print. Off, 1964.
Series:Shorter contributions to general geology.
Professional paper (Geological Survey (U.S.)) ; 454-O.
Subjects:
Geology, Stratigraphic > Precambrian.
Geology > Front Range (Colo. and Wyo.)
Metamorphic rocks > Front Range (Colo. and Wyo.)
Table of Contents:
  • Abstract
  • Introduction
  • Location
  • Fieldwork and acknowledgments
  • Scope of report
  • Geologic setting
  • General geology
  • Nomenclature of Precambrian rocks
  • Distribution and stratigraphy of the metasedimentary and metavolcanic(?) rocks
  • Metamorphic grade
  • Metasedimentary and metavolcanic(?) rocks
  • Microcline-quartz-plagioclase-biotite gneiss (microcline gneiss)
  • Horblende gneiss
  • Microcline-quartz-plagioclase-biotite gneiss and hornblende gneiss (microcline gneiss and hornblende gneiss)
  • Mica schist
  • Biotite-quartz-plagioclase gneiss and mica schist (biotite gneiss and mica schist)
  • Quartzite
  • Schist layers in quartzite
  • Calcium silicate rocks with schist in quartzite
  • Igneous rocks
  • Boulder Creek Granite and the quartz monzonite
  • Boulder Creek Granite
  • Quartz monzonite
  • Horblende diorite and hornblendite
  • Pegmatite and aplite
  • Cataclastic rocks
  • Augen gneiss
  • Cataclastic gneiss
  • Structural geology
  • Structural features
  • Three periods of deformation
  • Orientation of linations
  • Metamorphism related to structural and igneous history
  • Conclusion
  • Literature cited
  • Index.