The effect of lithology on the relationship between denudation rate and chemical weathering pathways – evidence from the eastern Tibetan Plateau [PDF]
Earth Surface Dynamics, 2022 The denudation of rocks in mountain belts exposes a range of fresh minerals to the surface of the Earth that are chemically weathered by acidic and oxygenated fluids.
A. Bufe +5 more
doaj +1 more source
Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]
, 2012 We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha +28 more
core +2 more sources
Colluvial deposits as a possible weathering reservoir in uplifting mountains [PDF]
Earth Surface Dynamics, 2018 The role of mountain uplift in the evolution of the global climate over geological times is controversial. At the heart of this debate is the capacity of rapid denudation to drive silicate weathering, which consumes CO2.
S. Carretier +6 more
doaj +1 more source
Co-variations of climate and silicate weathering in the Nile Basin during the Late Pleistocene
Quaternary Science Reviews, 2021 We have investigated provenance and weathering proxies of the clay-size sediment exported from the Nile River basin over the last 110,000 years. Using neodymium isotope composition of sediments from both the Nile Deep Sea-Fan and Lake Tana, we show that ...
L. Bastian +8 more
semanticscholar +1 more source
Worldwide distribution of continental rock lithology: Implications for the atmospheric/soil CO2 uptake by continental weathering and alkalinity river transport to the oceans [PDF]
, 2003 The silicate rock weathering followed by the formation of carbonate rocks in the ocean, transfers CO2 from the atmosphere to the lithosphere. This CO2 uptake plays a major role in the regulation of atmospheric CO2 concentrations at the geologic ...
Amiotte Suchet, Philippe +2 more
core +2 more sources
Biogeosciences, 2023 . The weathering rate of carbonate minerals is several orders of magnitude higher than for silicate minerals. Therefore, small amounts of carbonate minerals have the potential to control the dissolved weathering loads in silicate-dominated catchments ...
N. Lehmann +5 more
semanticscholar +1 more source
A revised model of global silicate weathering considering the influence of vegetation cover on erosion rate [PDF]
Geoscientific Model DevelopmentSilicate weathering, which is of great importance in regulating the global carbon cycle, has been found to be affected by complicated factors, including climate, tectonics and vegetation. However, the exact transfer function between these factors and the
H. Zuo +9 more
doaj +1 more source
Impact of nitrogenous fertilizers on carbonate dissolution in small agricultural catchments: Implications for weathering CO2 uptake at regional and global scales [PDF]
, 2008 The goal of this study was to highlight the occurrence of an additional proton-promoted weathering pathway of carbonate rocks in agricultural areas where N-fertilizers are extensively spread, and to estimate its consequences on riverine alkalinity and ...
Perrin, Anne-Sophie +2 more
core +2 more sources
Thermodynamic and Energetic Limits on Continental Silicate Weathering Strongly Impact the Climate and Habitability of Wet, Rocky Worlds [PDF]
Astrophysical Journal, 2020 The “liquid water habitable zone” (HZ) concept is predicated on the ability of the silicate weathering feedback to stabilize climate across a wide range of instellations.
Robert J. Graham, R. Pierrehumbert
semanticscholar +1 more source
Silicates, Silicate Weathering, and Microbial Ecology [PDF]
Geomicrobiology Journal, 2001 Mineralogy, microbial ecology, and mineral weathering in the subsurface are an intimately linked biogeochemical system. Although bacteria have been implicated indirectly in the accelerated weathering of minerals, it is not clear if this interaction is simply the coincidental result of microbial metabolism, or if it represents a specific strategy ...
openaire +1 more source