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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COPSE reloaded: An improved model of biogeochemical cycling over Phanerozoic time
TL;DR: The COPSE biogeochemical model as mentioned in this paper predicts the coupled histories and controls on atmospheric O2, CO2 and ocean composition over Phanerozoic time and has been extended and altered a number of times since being published in 2004.
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Silicon isotope variations accompanying basalt weathering in Iceland
TL;DR: In this article, the Si isotope compositions of twenty rivers from across Iceland were used to provide interference-free 30Si/28Si ratios with an average limiting precision of ± 0.04 δ30Si.
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Lithium, magnesium and silicon isotope behaviour accompanying weathering in a basaltic soil and pore water profile in Iceland
Philip A.E. Pogge von Strandmann,Philip A.E. Pogge von Strandmann,Sophie Opfergelt,Sophie Opfergelt,Yi-Jen Lai,Bergur Sigfússon,Sigurður R. Gislason,Kevin W. Burton,Kevin W. Burton +8 more
TL;DR: In this article, the authors present lithium, magnesium and silicon isotope ratios from pore waters and soils from a well-characterised Histic Andosol in south-west Iceland.
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The role of sulfur in chemical weathering and atmospheric CO2 fluxes: Evidence from major ions, δ13CDIC, and δ34SSO4 in rivers of the Canadian Cordillera
Jody Spence,Kevin Telmer +1 more
TL;DR: In this article, water samples from the Fraser, Skeena and Nass River basins of the Canadian Cordillera were analyzed for dissolved major element concentrations (HCO3−, SO42−, Cl−, Ca2+, Mg2+, K+, Na+), and δ13C of dissolved inorganic carbon (δ13CDIC) to quantify chemical weathering rates and exchanges of CO2 between the atmosphere, hydrosphere, and lithosphere.
Journal ArticleDOI
Riverine behaviour of uranium and lithium isotopes in an actively glaciated basaltic terrain
Philip A.E. Pogge von Strandmann,Kevin W. Burton,Rachael H. James,Peter van Calsteren,Sigurður R. Gislason,Fatima Mokadem +5 more
TL;DR: In this article, the U and Li isotope and major and trace element data for the dissolved load, suspended particulates and bedload for Icelandic rivers draining predominantly basaltic catchments were presented.
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.