thumbnail

Stable isotope study of water-rock interaction and ore formation, Bayhorse base and precious metal district, Idaho

Economic Geology

By:
and

Links

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

Abstract

Whole-rock ??18O and ??D values from the Garden Creek Phyllite define an isotopically depleted zone (60 km2) around the Nevada Mountain stock and are the result of high-temperature interactions with ancient meteoric waters at water/rock ratios ranging from 0.002 to 0.09. Comparison of the ore fluid ??18OH2O and ??DH2O values with hypothetical waters equilibrated with the Garden Creek Phyllite indicates that the hydrothermal fluids must have also interacted with the basal dolomite of Bayhorse Creek, which underlies the phyllite. The ?? 13CCO2 values for the hydrothermal fluids also record a transition from early water/rock interactions that were dominated by the Garden Creek Phyllite to later interactions that were influenced significantly by the basal dolomite of Bayhorse Creek. The range of ??34S values may be interpreted as either a heterogeneous sedimentary source or mixed sedimentary-magmatic sources. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Stable isotope study of water-rock interaction and ore formation, Bayhorse base and precious metal district, Idaho
Series title:
Economic Geology
Volume
87
Issue:
2
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Economic Geology
First page:
271
Last page:
287