The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces
Geophysical Monograph Series, Page 229-246., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson +2 more
wiley +12 more sources
Silicate weathering in anoxic marine sediments [PDF]
Mineralogical Magazine, 2008 Two sediment cores retrieved at the northern slope of Sakhalin Island, Sea of Okhotsk, were analysed for biogenic opal, organic carbon, carbonate, sulphur, major element concentrations, mineral contents and dissolved substances including nutrients, sulphate, methane, major cations, humic substances and total alkalinity.
Wallmann, K. +7 more
core +6 more sources
Earth’s silicate weathering continuum
Nature GeoscienceChemical weathering of silicate rocks redistributes major, minor and trace elements through coupled dissolution–precipitation reactions. These weathering processes drive shifts in ocean acid–base chemistry, modulating atmospheric carbon dioxide levels and providing a stabilizing feedback in the carbon cycle.
Trapp-Müller, Gerrit +17 more
openaire +6 more sources
Lithologic Controls on Silicate Weathering Regimes of Temperate Planets [PDF]
, 2021 Weathering of silicate rocks at a planetary surface can draw down CO2 from the atmosphere for eventual burial and long-term storage in the planetary interior. This process is thought to provide essential negative feedback to the carbonate-silicate cycle (
Kitzmann, Daniel +10 more
core +3 more sources
Enhanced silicate weathering is not limited by silicic acid saturation [PDF]
Proceedings of the National Academy of Sciences, 2011 Enhanced weathering of olivine as a means of sequestering carbon is investigated by Kohler et al. (1). Specifically, the study discusses the potential distribution of fine olivine powder, obtained from dunite mines, in the humid tropic regions of the Amazon and Congo River catchments. Olivine (forsterite) dissolution (Eq.
Schuiling, R.D. +2 more
openaire +3 more sources
Geochemistry, Geophysics, Geosystems, 2022 Mg isotopic composition of river water is dominantly controlled by the dissolution of both silicate and carbonate sources and a series of biogeochemical processes.
Tong Zhao, Wenjing Liu, Zhifang Xu
doaj +1 more source
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 +7 more
doaj +1 more source
Mobile evaporite enhances the cycle of physical–chemical erosion in badlands [PDF]
Earth Surface Dynamics, 2023 Chemical weathering driven by physical erosion is a natural process that strongly affects chemical and solid matter budgets at the Earth's surface. However, the influence of extreme climatic erosion on chemical weathering dynamics is poorly understood ...
C.-J. Yang +8 more
doaj +1 more source
Silicate rock weathering and atmospheric/soil CO2 uptake in the Amazon basin estimated from river water geochemistry: seasonal and spatial variations [PDF]
, 2003 Using the data of the CAMREX project (1982–1984) on the water geochemistry of the Amazon river and its main tributaries, it was possible to assess the silicate rock weathering processes and the associated consumption of atmospheric/soil CO2, taking into
Probst, Jean-Luc, Mortatti, Jefferson
core +1 more source
New estimate of chemical weathering rate in Xijiang River Basin based on multi-model
Scientific Reports, 2021 Hydrochemistry and Sr isotope compositions were measured in water samples collected during high- and low-water periods from the main stream and tributaries of the Xijiang River Basin in southern China. The primary weathering end-members were analyzed and
Yong Zhang +8 more
doaj +1 more source