skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: CO{sub 2} degassing in the Oregon Cascades

Abstract

The carbon isotope content of dissolved inorganic carbon was measured for large cold springs in the central Oregon Cascades. Low {sup 14}C activities in some of the springs are interpreted to result from the dissolution of diffuse emissions of magmatic CO{sub 2}, even though volcanic activity has not occurred in this area for more than 1300 yr. On the basis of dissolved magmatic carbon concentrations in the springs, the authors infer a diffuse magmatic CO{sub 2} degassing rate of 3.4 {times} 10{sup 5} kg/yr per kilometer of arc for the central Oregon Cascades. The CO{sub 2} flux calculated from estimates of the mean magmatic intrusion rate and experimentally determined values of CO{sub 2} content in melts is consistent with that determined from their measurements of the dissolved CO{sub 2} flux at springs.

Authors:
;  [1];  [2]
  1. Univ. of Oregon, Eugene, OR (United States). Dept. of Geological Sciences
  2. Lawrence Livermore National Lab., CA (United States). Isotope Sciences Div.
Publication Date:
OSTI Identifier:
697155
Resource Type:
Journal Article
Journal Name:
Geology
Additional Journal Information:
Journal Volume: 27; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; 54 ENVIRONMENTAL SCIENCES; CASCADE MOUNTAINS; WATER SPRINGS; CARBON DIOXIDE; DEGASSING; ISOTOPE RATIO; VOLCANISM; DISSOLVED GASES; ECOLOGICAL CONCENTRATION

Citation Formats

James, E.R., Manga, M., and Rose, T.P. CO{sub 2} degassing in the Oregon Cascades. United States: N. p., 1999. Web. doi:10.1130/0091-7613(1999)027<0823:CDITOC>2.3.CO;2.
James, E.R., Manga, M., & Rose, T.P. CO{sub 2} degassing in the Oregon Cascades. United States. doi:10.1130/0091-7613(1999)027<0823:CDITOC>2.3.CO;2.
James, E.R., Manga, M., and Rose, T.P. Wed . "CO{sub 2} degassing in the Oregon Cascades". United States. doi:10.1130/0091-7613(1999)027<0823:CDITOC>2.3.CO;2.
@article{osti_697155,
title = {CO{sub 2} degassing in the Oregon Cascades},
author = {James, E.R. and Manga, M. and Rose, T.P.},
abstractNote = {The carbon isotope content of dissolved inorganic carbon was measured for large cold springs in the central Oregon Cascades. Low {sup 14}C activities in some of the springs are interpreted to result from the dissolution of diffuse emissions of magmatic CO{sub 2}, even though volcanic activity has not occurred in this area for more than 1300 yr. On the basis of dissolved magmatic carbon concentrations in the springs, the authors infer a diffuse magmatic CO{sub 2} degassing rate of 3.4 {times} 10{sup 5} kg/yr per kilometer of arc for the central Oregon Cascades. The CO{sub 2} flux calculated from estimates of the mean magmatic intrusion rate and experimentally determined values of CO{sub 2} content in melts is consistent with that determined from their measurements of the dissolved CO{sub 2} flux at springs.},
doi = {10.1130/0091-7613(1999)027<0823:CDITOC>2.3.CO;2},
journal = {Geology},
number = 9,
volume = 27,
place = {United States},
year = {1999},
month = {9}
}