Evolution of fluid–rock interaction in the Reykjanes geothermal system, Iceland: Evidence from Iceland Deep Drilling Project core RN-17B

Fowler, Andrew P.G.; Zierenberg, Robert A.; Schiffman, Peter; Marks, Naomi; Friðleifsson, Guðmundur Ómar

doi:10.1016/j.jvolgeores.2015.06.009

Title: Evolution of fluid–rock interaction in the Reykjanes geothermal system, Iceland: Evidence from Iceland Deep Drilling Project core RN-17B

Journal Article · Sat Jun 20 00:00:00 EDT 2015 · Journal of Volcanology and Geothermal Research

DOI:https://doi.org/10.1016/j.jvolgeores.2015.06.009· OSTI ID:1879269

Fowler, Andrew P.G. ^[1]; Zierenberg, Robert A. ^[1]; Schiffman, Peter ^[1]; Marks, Naomi ^[2]; Friðleifsson, Guðmundur Ómar ^[3]

Univ. of California, Davis, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
HS Orka, Reykjanesbaer (Iceland)

We describe the lithology and present spatially resolved geochemical analyses of samples from the hydrothermally altered Iceland Deep Drilling Project (IDDP) drill core RN-17B. The 9.3 m long RN-17B core was collected from the seawater-dominated Reykjanes geothermal system, located on the Reykjanes Peninsula, Iceland. The nature of fluids and the location of the Reykjanes geothermal system make it a useful analog for seafloor hydrothermal processes, although there are important differences. Here, the recovery of drill core from the Reykjanes geothermal system, as opposed to drill cuttings, has provided the opportunity to investigate evolving geothermal conditions by utilizing in-situ geochemical techniques in the context of observed paragenetic and spatial relationships of alteration minerals.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)

Grant/Contract Number:: AC52-07NA27344; EAR 0507518

OSTI ID:: 1879269

Alternate ID(s):: OSTI ID: 1840846

Report Number(s):: LLNL-JRNL-693298; LLNL-JRNL-818931; 821804

Journal Information:: Journal of Volcanology and Geothermal Research, Vol. 302; ISSN 0377-0273

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Evolution of fluid–rock interaction in the Reykjanes geothermal system, Iceland: Evidence from Iceland Deep Drilling Project core RN-17B

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