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Chemical weathering in glacial environments
Geology, 1997Do glaciers enhance or inhibit chemical weathering rates relative to other environments? The importance of glaciers in the global carbon cycle and climate change hinges on the answer. We show that catchments occupied by active alpine glaciers yield cation denudation rates greater than the global mean rate but do not exceed rates in nonglacial ...
Suzanne Prestrud Anderson +2 more
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Physical and Chemical Weathering
2015As one geologist exclaimed: “Savor the irony should the metamorphic muscles that push mountains to the sky be driven by the pitter patter of tiny raindrops.” In the following chapters we look at this pitter patter, a synonym for exogenic processes that shape our landforms, starting with the most important process: weathering.
Anja M. Scheffers +2 more
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Recent chemical weathering of basalts
American Journal of Science, 1992Relative bulk leach rates of the major elements Na, Ca, Mg, Fe, Al, Ti, and Si from studied basaltic weathering profiles are not greatly affected by primary mineralogy or by bulk composition of the parent basalt, probably because major silicate phases are weathered at grossly similar rates.
H. W. Nesbitt, R. E. Wilson
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Applicability of chemical indices to characterize weathering degrees in decomposed volcanic rocks
, 2020Among the useful tools in characterizing weathering degrees are chemical indices, which combines bulk major elemental oxides into a single metric value and commonly presented along a vertical profile.
I. A. Okewale
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2019
Chemical and phase compositions of the surface of Venus could reflect a history of gas–rock and fluid–rock interactions, recent and past climate changes, and a loss of water from the Earth’s sister planet. The concept of chemical weathering on Venus through gas–solid type reactions was established in the early 1960s after the discovery of the hot and ...
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Chemical and phase compositions of the surface of Venus could reflect a history of gas–rock and fluid–rock interactions, recent and past climate changes, and a loss of water from the Earth’s sister planet. The concept of chemical weathering on Venus through gas–solid type reactions was established in the early 1960s after the discovery of the hot and ...
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Chemical weathering in granitic environments
Chemical Geology, 2003Abstract Factors controlling chemical weathering in granitic environments are deduced using an extensive database from the literature. Based on a transition state theory model, we evaluated the effects on chemical weathering of runoff, temperature and pH.
Priscia Oliva +2 more
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1970
Direct comparison of chemical analyses of fresh and weathered rocks shows that some constituents have been lost from fresh rock during weathering, and that some have accumulated in the weathered material. Some minerals are more stable than others to the weathering processes, and some chemical elements react with the watery solutions that cause ...
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Direct comparison of chemical analyses of fresh and weathered rocks shows that some constituents have been lost from fresh rock during weathering, and that some have accumulated in the weathered material. Some minerals are more stable than others to the weathering processes, and some chemical elements react with the watery solutions that cause ...
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Chemical Weathering at Low Temperatures
Geographical Review, 1949IN 1941 the author had an opportunity to study the small nivation depressions and associated snowdrifts on the north side of the San Gabriel Mountains, just north of Los Angeles. Analysis of ground water collected under the drifts showed that it contained calcium bicarbonate in solution.
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Graphic Representation of Chemical Weathering
SEPM Journal of Sedimentary Research, 1943ABSTRACT The several graphic devices available for use with studies of chemical weathering are analytically reviewed. The specific advantages and disadvantages of each are noted. A modification of existing methods, combining a number of their more desirable aspects, is proposed and illustrated.
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