thumbnail

Heart Mountain, Wyoming, detachment lineations: are they in microbreccia or in volcanic tuff?

Geological Society of America Bulletin

By:
, , , and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

The concept of tectonic denudation followed by deposition of lower middle Eocene Wapiti Formation volcanic rocks on the exposed Heart Mountain detachment has been challenged by Hauge. His "extending allochthon' interpretation requires that the Wapiti Formation be fault emplaced and that lineations in a volcanic tuff overlying the fault north of Jim Smith Peak be fault striae in "microbreccia'. Our re-examination of the field evidence in minute detail indicates that these lineations were produced by flowage of volcanic rocks on a thin layer of air-fall tuff. The evidence indicates that this tuff was deposited on the detachment surface during the brief interval that the denuded surface was exposed. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Heart Mountain, Wyoming, detachment lineations: are they in microbreccia or in volcanic tuff?
Series title:
Geological Society of America Bulletin
Volume
103
Issue:
9
Year Published:
1991
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geological Society of America Bulletin
First page:
1133
Last page:
1145