Results 11 to 20 of about 7,039,060 (250)

Records of Chemical Weathering and Plateau Saline Lake Sediments Linked to Paleoclimate Fluctuations During the Eocene

Geochemistry, Geophysics, Geosystems
Interactions between mountain building, weathering and climate draw significant attention within the geoscience community. In this study, the mixed rocks from the Eocene Lower Ganchaigou Formation (LGCG) of the Qaidam Basin are employed for weathering ...
Peng Pang, Xiucheng Tan, Kunyu Wu, Songtao Wu, Haoting Xing, Menglin Zhang, Na Zhang, Wei Deng   +7 more
doaj   +2 more sources

Chemical weathering proxies: An assessment of their robustness to reconstruct Paleozoic climate conditions

Evolving Earth
Several chemical weathering proxies for siliciclastic sedimentary deposits have been proposed over the last fifty years. However, only a few studies have evaluated their robustness for paleoclimate interpretation.
Franciele Agnesa Trentin, Joice Cagliari, Karlos G.D. Kochhann, Tracy Frank   +3 more
doaj   +2 more sources

Climate, vegetation, and weathering across space and time in Lake Tanganyika (tropical eastern Africa)

Quaternary Science Advances, 2021
Climate and vegetation influence weathering rates and processes; however, evaluating the effects of each and feedbacks between systems, has yet to be accomplished for many types of landscapes.
Sarah J. Ivory, Michael M. McGlue, Cara Peterman, Patrick Baldwin, Joseph Lucas, Andrew Cohen, James Russell, Justina Saroni, Emma Msaky, Ishmael Kimirei, Michael Soreghan   +10 more
doaj   +1 more source

Soil weathering dynamics and erosion in a dry oceanic area of the southern hemisphere (Otago, New Zealand)

Scientific Reports, 2022
Landscape evolution is driven by tectonics, climate and surface denudation. In New Zealand, tectonics and steep climatic gradients cause a dynamic landscape with intense chemical weathering, rapid soil formation, and high soil losses. In this study, soil,
Gerald Raab, Markus Egli, Kevin P. Norton, Adam P. Martin, Michael E. Ketterer, Dmitry Tikhomirov, Rahel Wanner, Fabio Scarciglia   +7 more
doaj   +1 more source

Strong Coupling Between Carbon Cycle, Climate, and Weathering During the Paleocene‐Eocene Thermal Maximum

Geophysical Research Letters, 2023
The Paleocene‐Eocene Thermal Maximum (PETM; ∼56 Ma)–a geologically rapid carbon‐release event similar to anthropogenic carbon emissions–is ideal for investigating weathering responses to rapid carbon release and associated climate change.
Zuoling Chen, Zhongli Ding, Shiling Yang, Jimin Sun, Min Zhu, Yilin Xiao, Fengtai Tong, Yao Liang   +7 more
doaj   +1 more source

Quantifying weathering intensity using chemical proxies: a weathering index AFB

, 2022
Chemical weathering indices (CWIs) based on bulk chemical rock composition can potentially provide an objective tool for estimation of weathering intensity and classification of weathering products.
N. Sergeev (14112075)
core   +1 more source

Petrology and geochemistry dataset of the volcanic scoriae from southern part of the continental Cameroon Volcanic Line

Data in Brief, 2022
Petrological and geochemical data of scoriae from the southern part of the continental Cameroon Volcanic Line were obtained through field and laboratory investigations.
Paul-Desire Ndjigui, Estelle Huguette O. Ngono   +1 more
doaj   +1 more source

Enhanced chemical weathering of rocks during the last glacial maximum: a sink for atmospheric CO2? [PDF]

, 1999
It has been proposed that increased rates of chemical weathering and the related drawdown of atmospheric CO2 on the continents may have at least partly contributed to the low CO2 concentrations during the last glacial maximum LGM..
Probst, Jean-Luc, Amiotte Suchet, Philippe, Ludwig, Wolfgang, Philippe Amiotte-Suchet, Jean-Luc Probst, Wolfgang Ludwig   +5 more
core   +1 more source

Physical and chemical weathering rates and CO2 consumption in a tropical lateritic environment: the upper Niger basin [PDF]

, 1998
The chemical composition of Niger river water measured bimonthly at Bamako Mali. during the period 1990–1992 provides an estimate of present weathering rates in the upper Niger basin.
Probst, Jean-Luc, Jean-Loup Boeglin, Jean-Luc Probst, Boeglin, Jean-Loup   +3 more
core   +1 more source

Sediment source-to-sink processes of the southeastern Indian Ocean during the Late Eocene-Oligocene and their potential significance for paleoclimate

地质科技通报, 2022
Understanding the paleoclimate responses in Southern Ocean and its surrounding land can help us to better explore the major climate transition mechanisms in geological history and predict the response ofthe earth system to abrupt climate changes in the ...
Qingchao Fan, Zhaokai Xu, Tianqi Sun, Tiegang Li, Fengming Chang   +4 more
doaj   +1 more source