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
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Stream geochemistry, chemical weathering and CO2 consumption potential of andesitic terrains, Dominica, Lesser Antilles
Steven T. Goldsmith,Anne E. Carey,Brent M. Johnson,Susan A. Welch,W. Berry Lyons,William H. McDowell,Jeffrey S. Pigott +6 more
TL;DR: In this article, a stream water sample was collected and manual stream gauging was performed in watersheds throughout the volcanic island of Dominica in the Lesser Antilles in 2006 and 2008.
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Global glaciations and atmospheric change at ca. 2.3 Ga
TL;DR: In this paper, the authors show that the Huronian Glaciation Event is constrained to have occurred synchronously during 2.29-2.25 Ga, accompanied by dramatic environmental changes characteristic of the Great Oxidation Event.
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Chemical denudation rates of the western Canadian orogenic belt: the Stikine terrane
TL;DR: In this paper, major element and Sr isotopic ratio analyses for 19 rivers draining the Stikine Province in the Western Canadian Cordillera were performed and the results showed that the major chemical features of these rivers are their dilute character and the excess of Ca, Mg and Sr in the dissolved load with regards to Na.
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The behaviour of magnesium and its isotopes during glacial weathering in an ancient shield terrain in West Greenland
Josh Wimpenny,Kevin W. Burton,Rachael H. James,Abdelmouhcine Gannoun,Fatima Mokadem,Sigurður R. Gislason +5 more
TL;DR: In this article, the Mg concentration and Mg isotope ratio for the dissolved, suspended and bedload phases of glacial and non-glacial rivers in west Greenland were determined.
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Lithium-isotope evidence for enhanced silicate weathering during OAE 1a (Early Aptian Selli event)
Maria Lechler,Philip A.E. Pogge von Strandmann,Hugh C. Jenkyns,Giacomo Prosser,Mariano Parente +4 more
TL;DR: In this article, the role of weathering as both an OAE initiator and terminator via CO2 sequestration was assessed in three sections of shallow-marine carbonates from the Pacific and Tethyan realms.
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.