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• W2464444069 endingPage "293" @default.
• W2464444069 startingPage "265" @default.
• W2464444069 abstract "Abstract A negative feedback between silicate weathering rates and climate is hypothesized to play a central role in moderating atmospheric CO2 concentrations on geologic timescales. However, uncertainty regarding the processes that regulate the operation of the negative feedback limits our ability to interpret past variations in the ocean–atmosphere carbon cycle. In particular, the mechanisms that determine the flux of weathered material for a given climatic state are still poorly understood. Here, we quantify the processes that determine catchment-scale solute fluxes for two lithologic end-members—basalt and granite—by applying a recently developed solute production model that links weathering fluxes to both discharge and the reactivity of the weathering material. We evaluate the model against long-term monitoring of concentration–discharge relationships from basaltic and granitic catchments to determine the parameters associated with solute production in each catchment. Higher weathering rates in basaltic catchments relative to granitic catchments are driven by differing responses to increases in runoff, with basaltic catchments showing less dilution with increasing runoff. In addition, results from the solute production model suggest that thermodynamic constraints on weathering reactions could explain higher concentrations in basaltic catchments at lower runoff compared to granitic catchments. To understand how the response to changing discharge controls weathering fluxes under different climatic states, we define basalt/granite weatherability as the ratio of the basalt catchment flux to the granite catchment flux. This weatherability is runoff-dependent and increases with increasing runoff. For HCO3− and SiO2(aq) fluxes, for modern global runoff, the derived mean basalt/granite weatherability is 2.2 (1.3–3.7, 2σ) and 1.7 (1.6–2.1, 2σ), respectively. Although we cannot determine the array of individual processes resulting in differences among catchments, the relative differences in certain model parameters that represent catchment-scale weathering fluxes of granitic and basaltic lithologies are robust. Our approach provides a mechanism that links runoff with the distribution of global sub-aerial silicate lithologies to understand how the basalt/granite weatherability of the Earth’s surface may have varied on geologic timescales. The relationships between basalt/granite weatherability and runoff derived in this study could be used to parameterize the silicate weathering negative feedback to model past changes in pCO2." @default.
• W2464444069 created "2016-07-22" @default.
• W2464444069 creator A5001814840 @default.
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• W2464444069 creator A5072041196 @default.
• W2464444069 date "2016-10-01" @default.
• W2464444069 modified "2023-10-12" @default.
• W2464444069 title "Differential weathering of basaltic and granitic catchments from concentration–discharge relationships" @default.
• W2464444069 cites W1499839127 @default.
• W2464444069 cites W1518578690 @default.
• W2464444069 cites W1537918099 @default.
• W2464444069 cites W1545877289 @default.
• W2464444069 cites W1548753503 @default.
• W2464444069 cites W1558607983 @default.
• W2464444069 cites W1585612743 @default.
• W2464444069 cites W1591289697 @default.
• W2464444069 cites W1637881687 @default.
• W2464444069 cites W1772595428 @default.
• W2464444069 cites W1774242947 @default.
• W2464444069 cites W1782537020 @default.
• W2464444069 cites W1788119482 @default.
• W2464444069 cites W1965472552 @default.
• W2464444069 cites W1967946482 @default.
• W2464444069 cites W1967947509 @default.
• W2464444069 cites W1968175026 @default.
• W2464444069 cites W1969134186 @default.
• W2464444069 cites W1971461287 @default.
• W2464444069 cites W1973846070 @default.
• W2464444069 cites W1974774959 @default.
• W2464444069 cites W1974944396 @default.
• W2464444069 cites W1974945390 @default.
• W2464444069 cites W1975052733 @default.
• W2464444069 cites W1978452162 @default.
• W2464444069 cites W1978846595 @default.
• W2464444069 cites W1979608470 @default.
• W2464444069 cites W1979719754 @default.
• W2464444069 cites W1981236821 @default.
• W2464444069 cites W1983176316 @default.
• W2464444069 cites W1984357207 @default.
• W2464444069 cites W1984390324 @default.
• W2464444069 cites W1985197929 @default.
• W2464444069 cites W1985363354 @default.
• W2464444069 cites W1986601098 @default.
• W2464444069 cites W1986869158 @default.
• W2464444069 cites W1987022312 @default.
• W2464444069 cites W1987278699 @default.
• W2464444069 cites W1987288036 @default.
• W2464444069 cites W1988153865 @default.
• W2464444069 cites W1988858868 @default.
• W2464444069 cites W1989279896 @default.
• W2464444069 cites W1990292775 @default.
• W2464444069 cites W1991405927 @default.
• W2464444069 cites W1995035032 @default.
• W2464444069 cites W1996523365 @default.
• W2464444069 cites W1996830410 @default.
• W2464444069 cites W2000179986 @default.
• W2464444069 cites W2000556874 @default.
• W2464444069 cites W2001363398 @default.
• W2464444069 cites W2002378360 @default.
• W2464444069 cites W2003273916 @default.
• W2464444069 cites W2003461155 @default.
• W2464444069 cites W2003548976 @default.
• W2464444069 cites W2004379415 @default.
• W2464444069 cites W2005188787 @default.
• W2464444069 cites W2008587428 @default.
• W2464444069 cites W2009446982 @default.
• W2464444069 cites W2010837848 @default.
• W2464444069 cites W2010859214 @default.
• W2464444069 cites W2011682877 @default.
• W2464444069 cites W2013756008 @default.
• W2464444069 cites W2014583614 @default.
• W2464444069 cites W2014746345 @default.
• W2464444069 cites W2014949335 @default.
• W2464444069 cites W2017262766 @default.
• W2464444069 cites W2020527814 @default.
• W2464444069 cites W2021498615 @default.
• W2464444069 cites W2021805653 @default.
• W2464444069 cites W2022683665 @default.
• W2464444069 cites W2023792279 @default.
• W2464444069 cites W2025080436 @default.
• W2464444069 cites W2025187569 @default.
• W2464444069 cites W2026719186 @default.
• W2464444069 cites W2027993166 @default.
• W2464444069 cites W2029664473 @default.
• W2464444069 cites W2030121175 @default.
• W2464444069 cites W2030169181 @default.
• W2464444069 cites W2030999431 @default.
• W2464444069 cites W2032784498 @default.
• W2464444069 cites W2034590180 @default.
• W2464444069 cites W2036280659 @default.
• W2464444069 cites W2036685771 @default.
• W2464444069 cites W2039226417 @default.
• W2464444069 cites W2042162941 @default.
• W2464444069 cites W2042962539 @default.

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