CO2 drawdown from weathering is maximized at moderate erosion rates

A Bufe, JKC Rugenstein, N Hovius - Science, 2024 - science.org
Uplift and erosion modulate the carbon cycle over geologic timescales by exposing minerals
to chemical weathering. However, the erosion sensitivity of mineral weathering remains …

Hydrological control of river and seawater lithium isotopes

F Zhang, M Dellinger, RG Hilton, J Yu, MB Allen… - Nature …, 2022 - nature.com
Seawater lithium isotopes (δ7Li) record changes over Earth history, including a∼ 9‰
increase during the Cenozoic interpreted as reflecting either a change in continental silicate …

[HTML][HTML] Chemical weathering processes in the Chinese Loess Plateau

N Chai, Z Zhao, X Li, J **ao, Z ** - Geoscience Frontiers, 2024 - Elsevier
Covered by erodible loess and affected by significant seasonal climate variations, chemical
weathering in the Chinese Loess Plateau (abbreviated as CLP) has important effects on the …

Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt

C Li, P Smith, X Bai, Q Tan, G Luo, Q Li, J Wang… - Global and Planetary …, 2023 - Elsevier
The chemical weathering of silicate rocks can yield bicarbonate which is transported via
rivers to the ocean, followed by the deposition of carbonate, acting as a carbon sink on long …

[HTML][HTML] A global reassessment of the controls on iron speciation in modern sediments and sedimentary rocks: A dominant role for diagenesis

V Pasquier, DA Fike, S Révillon, I Halevy - Geochimica et Cosmochimica …, 2022 - Elsevier
The speciation of iron in sediments and sedimentary rocks is a widely used proxy for the
chemistry and oxidation state of ancient water bodies. Specifically, the fraction of reactive …

Chemical weathering in glacial catchment acting as a net carbon source

Y Cao, M Wang, F Zhang, Y Hu, L Yang, Y Wang… - Science of the Total …, 2023 - Elsevier
Over geological time scales, continental silicate weathering is considered as a critical
carbon sink that regulates long-term climate feedback. By contrast, recent studies indicate …

Erosional modulation of the balance between alkalinity and acid generation from rock weathering

S Xu, A Bufe, SL Li, ED Erlanger, L Ran, J Zhong… - … et Cosmochimica Acta, 2024 - Elsevier
The balance between alkalinity generation by carbonate and silicate weathering and sulfuric
acid generation by sulfide weathering controls the effect of weathering on atmospheric pCO …

Significant influence of water diversion and anthropogenic input on riverine sulfate based on sulfur and oxygen isotopes

D Zhang, T Xue, J **ao, N Chai, S Gong - Journal of Hazardous Materials, 2024 - Elsevier
The transportation of dissolved sulfate (SO 4 2-) to the ocean via river systems plays a
critical role in the global sulfur cycle. However, the increasing anthropogenic input has made …

Partitioning riverine sulfate sources using oxygen and sulfur isotopes: Implications for carbon budgets of large rivers

KE Relph, EI Stevenson, AV Turchyn, G Antler… - Earth and Planetary …, 2021 - Elsevier
The weathering of carbonate rocks with sulfuric acid releases carbon dioxide (CO 2) to the
atmosphere, offsetting the CO 2 drawdown from carbonic acid weathering of silicates …

An unshakable carbon budget for the Himalaya

L Märki, M Lupker, C France-Lanord, J Lavé… - Nature …, 2021 - nature.com
The erosion and weathering of mountain ranges exert a key control on the long-term (105–
106 yr) cycling of carbon between Earth's surface and crust. The net carbon budget of a …