thumbnail

The Steens Mountain ( Oregon) geomagnetic polarity transition ( USA). 3. Its regional significance.

Journal of Geophysical Research

By:
, , , , and

Links

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

Abstract

Study of the variations of direction and intensity of the geomagnetic field as recorded by the Miocene lava flows on Steens Mountain, SE Oregon, has resulted in a detailed description of total field behavior during a reversal in polarity. In addition to information about the polarity reversal itself, the detailed paleomagnetic record includes several thousand years of geomagnetic history preceding and following the polarity transition at 15.5 Ma. To test the feasibility of using this record as a means of correlation in this part of the western US, comparisons are made of reconnaissance and previously published paleomagnetic records obtained from what has been thought to be the Steens Basalt or rocks of equivalent age. Despite the fact that many of these earlier studies were not detailed and were not intended for correlation purposes, convincing similarities among some of the records are evident. The Steens Basalt paleomagnetic record does, indeed, have potential as a correlation tool during this time of widespread basaltic volcanism. Concludes that findings indicate no post-20 Ma differential rotation between S-E Washington and S-central Oregon, in contrast to previous interpretations. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The Steens Mountain ( Oregon) geomagnetic polarity transition ( USA). 3. Its regional significance.
Series title:
Journal of Geophysical Research
Volume
92
Issue:
B8
Year Published:
1987
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geophysical Research
First page:
8057
Last page:
8076
Number of Pages:
20