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

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...

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Bibliographic Details
Published in:Journal of Volcanology and Geothermal Research
Main Authors: Fowler, Andrew P. G., Zierenberg, Robert A., Schiffman, Peter, Marks, Naomi, Friðleifsson, Guðmundur Ómar
Language:unknown
Published: 2023
Subjects:
15 GEOTHERMAL ENERGY
58 GEOSCIENCES
Reykjanes
Iceland
Online Access:http://www.osti.gov/servlets/purl/1840846
https://www.osti.gov/biblio/1840846
https://doi.org/10.1016/j.jvolgeores.2015.06.009
Description
Summary: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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