Results 21 to 30 of about 818,473 (313)
Earth and Planetary Science Letters, 2022 Dissolved Rare Earth Elements (REE) and radiogenic neodymium (Nd) isotope composition ( ε Nd ) of seawater are widely used geochemical tools in studying marine processes, but their modern ocean budgets are poorly understood.
Jianghui Du +5 more
semanticscholar +1 more source
Environmental Science and Technology, 2021 Enhanced silicate weathering (ESW) by spreading finely ground silicate rock along the coastal zone to remove atmospheric carbon dioxide (CO2) is a proposed climate change mitigation technique. The abundant and fast-dissolving mineral olivine has received
G. Flipkens, R. Blust, R. Town
semanticscholar +1 more source
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
Geochemical characteristics of strontium isotopes in a coastal watershed: implications for anthropogenic influenced chemical weathering and export flux [PDF]
PeerJ, 2022 Coastal watershed are essential in transporting dissolved loads from terrestrial biogeochemical process of surface environment to the adjacent oceans.
Shitong Zhang, Guilin Han, Jie Zeng
doaj +2 more sources
Direct measurement of fungal contribution to silicate weathering rates in soil
Geology, 2021 Chemical weathering produces solutes that control groundwater chemistry and supply ecosystems with essential nutrients. Although microbial activity influences silicate weathering rates and associated nutrient fluxes, its relative contribution to silicate
B. Wild, G. Imfeld, D. Daval
semanticscholar +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
Frontiers in Plant Science, 2022 Enhanced weathering is a proposed carbon dioxide removal (CDR) strategy to accelerate natural carbon sequestration in soils via the amendment of silicate rocks to agricultural soils.
Hiral Jariwala +4 more
doaj +1 more source
Weak impact of microorganisms on Ca, Mg-bearing silicate weathering
npj Materials Degradation, 2021 Assessment of the microbial impact on mineral dissolution is crucial for a predictive understanding of basic (Ca, Mg bearing) silicate weathering and the associated CO 2 consumption, bioerosion, and CO 2 storage in basaltic rocks.
O. Pokrovsky +4 more
semanticscholar +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
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
Mortatti, Jefferson, Probst, Jean-Luc
core +2 more sources