Lithium isotope geochemistry

S Penniston-Dorland, XM Liu… - … in Mineralogy and …, 2017 - pubs.geoscienceworld.org
The lithium isotope system is increasingly being applied to a variety of Earth science studies,
as the burgeoning literature attests; over 180 papers have been published in the last twelve …

Silicate weathering as a feedback and forcing in Earth's climate and carbon cycle

DE Penman, JKC Rugenstein, DE Ibarra… - Earth-Science …, 2020 - Elsevier
Current understanding of the long-term carbon cycle posits that Earth's climate is stabilized
by a negative feedback involving CO 2 consumption by chemical weathering of silicate …

Lithium isotope evidence for enhanced weathering and erosion during the Paleocene-Eocene Thermal Maximum

PAE Pogge von Strandmann, MT Jones, AJ West… - Science …, 2021 - science.org
The Paleocene-Eocene Thermal Maximum (PETM;~ 55.9 Ma) was a geologically rapid
warming period associated with carbon release, which caused a marked increase in the …

Compositional evolution of the upper continental crust through time, as constrained by ancient glacial diamictites

RM Gaschnig, RL Rudnick, WF McDonough… - … et Cosmochimica Acta, 2016 - Elsevier
The composition of the fine-grained matrix of glacial diamictites from the Mesoarchean,
Paleoproterozoic, Neoproterozoic, and Paleozoic, collected from four modern continents …

Heterogeneous potassium isotopic composition of the upper continental crust

TY Huang, FZ Teng, RL Rudnick, XY Chen, Y Hu… - … et Cosmochimica Acta, 2020 - Elsevier
Assessing the K isotopic composition of the upper continental crust is important for
understanding the processes by which the crust is generated and modified, and constraining …

Tracing weathering regimes using the lithium isotope composition of detrital sediments

M Dellinger, J Bouchez, J Gaillardet, L Faure… - …, 2017 - pubs.geoscienceworld.org
Lithium (Li) isotopes are a promising tracer of chemical weathering processes for both
modern and ancient times. In order to improve the use of Li isotopes in the sedimentary …

Dominance of felsic continental crust on Earth after 3 billion years ago is recorded by vanadium isotopes

S Tian, X Ding, Y Qi, F Wu, Y Cai… - Proceedings of the …, 2023 - National Acad Sciences
The transition from mafic to felsic upper continental crust (UCC) is crucial to habitability of
Earth, and may be related to the onset of plate tectonics. Thus, defining when this crustal …

Cerium geochemical composition of the upper continental crust through time: Implications for tracing past surface redox conditions

W Li, R Nakada, Y Takahashi, RM Gaschnig… - … et Cosmochimica Acta, 2023 - Elsevier
To investigate the use of cerium (Ce) in the upper continental crust (UCC) for tracing
oxidative weathering, we measured the Ce anomaly (Ce/Ce*), the Ce stable isotope …

Enhanced chemical weathering triggered an expansion of euxinic seawater in the aftermath of the Sturtian glaciation

GY Wei, W Wei, D Wang, T Li, X Yang… - Earth and Planetary …, 2020 - Elsevier
Abstract The Cryogenian Period comprised two episodes of global glaciation (Sturtian and
Marinoan glaciations) separated by a non-glacial interval, which was characterized by early …

Barium isotopic composition of the upper continental crust

XY Nan, HM Yu, RL Rudnick, RM Gaschnig… - … et Cosmochimica Acta, 2018 - Elsevier
The upper continental crust (UCC) is an important reservoir of Ba within the Earth. We report
high precision (≤±0.05‰, 2SD) Ba isotopic data for 71 samples (including granites …