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A geochemical study of oil in metalliferous veins, Idarado Mine, San Juan Mountains, Colorado

Journal of Research of the U.S. Geological Survey

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Abstract

A tarry, benzene-soluble material is present in metal-rich veins in the Idarado mine, Ouray County, Colo., in an area not known to have petroleum resources. The material was compared chemically, spectometrically, and chromatographically with oils from four fields in the nearby Paradox basin. Each of these oil fields contains reservoir rocks equivalent to rock units known to extend beneath volcanic rocks near the mine. Carbon and sulfur isotope data and gas chromatographic data indicate a similarity between the oil from the nearby Sierra field and the oil from the mine. Thus, it seems both geologically and chemically possible that oil in the mine originated in Cretaceous sediments. Variations in the composition of oil from the mine and differences between the mine oil and Sierra oil, notably in the distributions of hydrocarbons, are attributed to bacterial degradation.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A geochemical study of oil in metalliferous veins, Idarado Mine, San Juan Mountains, Colorado
Series title:
Journal of Research of the U.S. Geological Survey
Volume
4
Issue:
5
Year Published:
1976
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Energy Resources Program
Description:
7 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Research of the U.S. Geological Survey
First page:
593
Last page:
599
Country:
United States
State:
Colorado
County:
Ouray County
Online Only (Y/N):
N
Additional Online Files(Y/N):
N