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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Dissertation
Reconstruction des régimes d'altération actuels et passés à partir des isotopes du bore dans les sédiments de rivière
TL;DR: In this paper, the isotope du bore dans les sediments fluviaux modernes enregistrent le regime d'alteration a l'echelle du bassin versant.
Journal ArticleDOI
Rubidium isotope fractionation during chemical weathering of granite
Zhuoying Zhang,Zhuoying Zhang,Jinlong Ma,Jinlong Ma,Zhibing Wang,Zhibing Wang,Le Zhang,Le Zhang,Xinyue He,Xinyue He,Guanhong Zhu,Guanhong Zhu,Ti Zeng,Ti Zeng,Gangjian Wei,Gangjian Wei +15 more
TL;DR: In this article, the authors show that the mobility of Rb ( τ R b TiO 2 ) fluctuates dramatically from −42.0% to 259% and δ87Rb values vary from −0.30 −1.13% to 0.04 −1%.
OtherDOI
Preliminary Appraisal of a Correlation Between Glaciations and Large Igneous Provinces Over the Past 720 Million Years
Nasrrddine Youbi,Nasrrddine Youbi,Nasrrddine Youbi,Richard E. Ernst,Richard E. Ernst,Ross N. Mitchell,Ross N. Mitchell,Moulay Ahmed Boumehdi,Moulay Ahmed Boumehdi,Warda El Moume,Abdelhak Ait Lahna,Mohamed Khalil Bensalah,Mohamed Khalil Bensalah,Ulf Söderlund,Ulf Söderlund,Miguel Doblas,Colombo Celso Gaeta Tassinari +16 more
investigations and kinetic modeling
TL;DR: In this paper, the authors investigated carbonation reactions of wollastonite in experiments conducted at conditions relevant to geologic CO2 sequestration in subsurface environments (T= 90 °C and pCO2 = 25 MPa).
Journal ArticleDOI
Assessing volcanic controls on Miocene climate change
TL;DR: In this paper , the authors investigate the interaction between volcanism, climate and biogeochemical cycles through the Miocene period and identify high tectonic CO 2 degassing rates and further emissions associated with the emplacement of the Columbia River Basalt Group as the primary driver of the background warmth and the mid-Miocene Climatic Optimum (MMCO) respectively.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.