Journal ArticleDOI
Basalt weathering laws and the impact of basalt weathering on the global carbon cycle
TLDR
In this paper, the chemical weathering of basalts and the flux of carbon transferred from the atmosphere to the ocean during this major process at the surface of the Earth were investigated.About:
This article is published in Chemical Geology.The article was published on 2003-12-30. It has received 762 citations till now. The article focuses on the topics: Soil production function & Weathering.read more
Citations
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Coupled modeling of biospheric and chemical weathering processes at the continental scale
TL;DR: In this paper, a reactive-transport model describing weathering in soil profiles and at the watershed scale is coupled to a dynamic global vegetation model to calculate the dissolved load of continental waters on a 0.5° latitude × 0. 5° longitude grid.
Journal ArticleDOI
Application of seismic and sequence stratigraphic concepts to a lava-fed delta system in the Faroe-Shetland Basin, UK and Faroes
TL;DR: In this article, a detailed seismic stratigraphic analysis of 2D seismic data over the Faroe-Shetland Escarpment has identified 13 seismic reflection units that record lava-fed delta deposition during discrete periods of volcanism.
Journal ArticleDOI
Rapid solubility and mineral storage of CO2 in basalt
Sigurdur R. Gislason,Wallace S. Broecker,Einar Gunnlaugsson,Sandra Ó. Snæbjörnsdóttir,Kiflom G. Mesfin,H.A. Alfredsson,E. S. Aradottir,Bergur Sigfússon,Ingvi Gunnarsson,Martin Stute,Juerg M. Matter,M.Th. Arnarson,Iwona Galeczka,Snorri Gudbrandsson,G. Stockman,D. Wolff Boenisch,Andri Stefánsson,E. Ragnheidardottir,T. Flaathen,Alexander P. Gysi,J. Olssen,J. Olssen,K. Didriksen,Susan L. S. Stipp,Bénédicte Ménez,Eric H. Oelkers,Eric H. Oelkers +26 more
TL;DR: In this paper, the authors demonstrate the dissolution of CO2 into water during its injection into basalt leading to its geologic solubility storage in less than five minutes and potential geologic mineral storage within few years after injection.
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Pioneer microbial communities of the Fimmvörðuháls lava flow, Eyjafjallajökull, Iceland
Laura C. Kelly,Laura C. Kelly,Charles S. Cockell,Charles S. Cockell,Thorsteinn Thorsteinsson,Viggo Marteinsson,John Stevenson +6 more
TL;DR: The use of molecular and culture-dependent methods to determine the composition of pioneer microbial communities colonising the basaltic Fimmvörðuháls lava flow at Eyjafjallajökull, Iceland, formed in 2010 show that 3 to 5 months post eruption, the lava was colonised by a low-diversity microbial community dominated by Betaproteobacteria, primarily taxa related to non-phototrophic diazotrophs.
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Impact of Permafrost Thaw and Climate Warming on Riverine Export Fluxes of Carbon, Nutrients and Metals in Western Siberia
Oleg S. Pokrovsky,R. M. Manasypov,Sergey G. Kopysov,Ivan V. Krickov,Liudmila S. Shirokova,Sergey V. Loiko,Artem G. Lim,Larisa G. Kolesnichenko,Sergey N. Vorobyev,Sergey N. Kirpotin +9 more
TL;DR: In this article, the authors measured export fluxes (yields) of dissolved organic carbon (DOC), major cations, macro- and micro- nutrients, and trace elements in 32 rivers, draining the Western Siberian Lowland (WSL) across a latitudinal transect from the permafrost-free to the continuous perma-frost zone.
References
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Global silicate weathering and CO2 consumption rates deduced from the chemistry of large rivers
TL;DR: In this article, newly compiled data on the 60 largest rivers of the world are used to calculate the contribution of main lithologies, rain and atmosphere to river dissolved loads, and the relationship between the chemical weathering rates of silicates and the possible controlling parameters are explored.
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The carbonate-silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years
TL;DR: In this article, a computer model has been constructed that considers the effects on the CO/sub 2/ level of the atmosphere, and the Ca, Mg, and HCO/sub 3/ levels of the ocean, of the following processes: weathering on the continents of calcite, dolomite, and calcium-and-magnesium-containing silicates; biogenic precipitation and removal of CaCO 3/from the ocean; removal of Mg from the ocean via volcanic-seawater reaction; and the metamorphic-magmatic decarbon
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Tectonic forcing of late Cenozoic climate
TL;DR: In particular, tectonically driven increases in chemical weathering may have resulted in a decrease of atmospheric C02 concentration over the past 40 Myr as discussed by the authors. But this was not shown to be the case for the uplift of the Tibetan plateau and positive feedbacks initiated by this event.
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Geocarb III: A Revised Model of Atmospheric CO2 over Phanerozoic Time
TL;DR: In this article, the GEOCARB model has been updated with an emphasis on factors affecting CO2 uptake by continental weathering, including the role of plants in chemical weathering and the application of GCMs to study the long-term carbon cycle.
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A negative feedback mechanism for the long‐term stabilization of Earth's surface temperature
TL;DR: In this article, it is suggested that the partial pressure of carbon dioxide in the atmosphere is buffered, over geological time scales, by a negative feedback mechanism, in which the rate of weathering of silicate minerals (followed by deposition of carbonate minerals) depends on surface temperature, which in turn depends on the carbon dioxide partial pressure through the greenhouse effect.