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Silicate Weathering and Climate
1997There is no doubt that the temperature at the surface of the Earth has not varied excessively since the origin of life. Certainly the stability limits of liquid water have not been exceeded. If CO2 is an important greenhouse gas, as is commonly accepted, this means that its level in the atmosphere has not varied enough to cause excessively low ...
Robert A. Berner, Elizabeth K. Berner
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The temperature control on the intensity of silicate weathering
2023Chemical weathering of silicate minerals plays a vital role in maintaining the long-term habitability of Earth’s climate over geological timescales via a negative feedback mechanism. But much debate concerns the response strength of silicate weathering to each climatic factor and its evolution with land surface reorganisation.
Deng, Kai, Yang, Shouye, Guo, Yulong
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Global limits on silicate weathering and implications for the silicate weathering feedback
, 2013 Chemical weathering of silicate rocks is considered responsible for the stabilization of atmospheric CO2 and climate on geological time scales. The strength of this negative feedback is hard to establish on a global scale due to the spatial variability ...
Arens, S., Arens, Susanne
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The Role of Climate in Silicate Weathering
Mineralogical Magazine, 1998The major factors affecting the rate of chemical weathering of silicate minerals include lithology, topography (relief), permeability, climate (precipitation, temperature and vegetation) and aspect (e.g. Jenny, 1941). Recently it has been suggested (eg., Edmond and Huh, 1997; Gaillardet et al, 1997) that climate, especially temperature, is not an ...
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An Index of Weathering for Silicate Rocks
Geological Magazine, 1970SummaryAn index of weathering for silicate rocks is proposed, based on the proportions of the alkali and alkaline earth metals present. These are considered to be the most mobile of the major elements. The bond strengths of the elements with oxygen are used as weighting factors in the index, which measures both the degree to which a rock has already ...
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A revised model for silicate weathering
Goldschmidt2023 abstracts, 2023Haoyue Zuo, Yonggang Liu
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Controls on Silicate Weathering Rates in Soils
Mineralogical Magazine, 1998By far the largest uncertainty in comparing experimental and field weathering rates is surface area (i.e. White et al., 1996). Geometric surface areas are clearly an underestimate, since even fresh experimental materials have surface roughnesses of 3-20.
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A Model of Chemical Weathering of Silicate Minerals
Geological Society of America Bulletin, 1971The behavior of quartzose and olivinic sands subjected to water percolation is important in studying the weathering of a sediment. Sorption of H + ions from the water and desorption of metal ions from the sediment take place in a fashion similar to that caused by an ion exchange resin.
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Forests, climate, and silicate rock weathering
Journal of Geochemical Exploration, 2006Abstract Over time periods of 10 6 years and longer, atmospheric carbon dioxide content is largely controlled by a balance between silicate rock weathering and CO 2 sources (degassing from the Earth plus net organic carbon oxidation). Vegetation cover can affect silicate rock weathering rates by increasing soil CO 2 content, stabilizing soil cover,
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