Rates and Mechanisms of Mineral Carbonation in Peridotite: Natural Processes and Recipes for Enhanced, in situ CO <sub>2</sub> Capture and Storage

TitleRates and Mechanisms of Mineral Carbonation in Peridotite: Natural Processes and Recipes for Enhanced, in situ CO 2 Capture and Storage
Publication TypeJournal Article
Year of Publication2011
AuthorsKelemen, PB, Matter, J, Streit, EE, Rudge, JF, Curry, WB, Blusztajn, J
JournalAnnual Review of Earth and Planetary Sciences
Volume39
Issue1
Pagination545 - 576
Date PublishedJun-05-2013
ISSN0084-6597
Abstract

Near-surface reaction of CO2-bearing fluids with silicate minerals in peridotite and basalt forms solid carbonate minerals. Such processes form abundant veins and travertine deposits, particularly in association with tectonically exposed mantle peridotite. This is important in the global carbon cycle, in weathering, and in understanding physical-chemical interaction during retrograde metamorphism. Enhancing the rate of such reactions is a proposed method for geologic CO2 storage, and perhaps for direct capture of CO2 from near-surface fluids. We review, synthesize, and extend inferences from a variety of sources. We include data from studies on natural peridotite carbonation processes, carbonation kinetics, feedback between permeability and volume change via reaction-driven cracking, and proposed methods for enhancing the rate of natural mineral carbonation via in situ processes ("at the outcrop") rather than ex situ processes ("at the smokestack").

URLhttp://www.annualreviews.org/doi/10.1146/annurev-earth-092010-152509
DOI10.1146/annurev-earth-092010-152509