Results 41 to 50 of about 824,380 (294)

Alkalinity generation from carbonate weathering in a silicate-dominated headwater catchment at Iskorasfjellet, northern Norway

open access: yesBiogeosciences, 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

Thermodynamic and Energetic Limits on Continental Silicate Weathering Strongly Impact the Climate and Habitability of Wet, Rocky Worlds [PDF]

open access: yesAstrophysical 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

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

open access: yes, 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.
Boeglin, Jean-Loup, Probst, Jean-Luc
core   +2 more sources

A revised model of global silicate weathering considering the influence of vegetation cover on erosion rate [PDF]

open access: yesGeoscientific Model Development
Silicate 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

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

open access: yes, 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

Major ion chemistry of the Teesta River in Sikkim Himalaya, India: Chemical weathering and assessment of water quality

open access: yesJournal of Hydrology: Regional Studies, 2019
Study Region: Teesta River of Eastern Himalayas, India. Study Focus: This article addresses the mechanisms of weathering in the Teesta River, for the first time based on the original data of major ions. Water samples were collected along the Teesta River
Tenzin Tsering   +3 more
doaj   +1 more source

A geochemical study of the winonaites: Evidence for limited partial melting and constraints on the precursor composition [PDF]

open access: yes, 2017
The winonaites are primitive achondrites which are associated with the IAB iron meteorites. Textural evidence implies heating to at least the Fe, Ni–FeS cotectic, but previous geochemical studies are ambiguous about the extent of silicate melting in ...
Benedix, Gretchen K.   +6 more
core   +2 more sources

Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration [PDF]

open access: yesBiogeosciences, 2018
The southeastern coastal region is one of the most developed and populated areas in China. Meanwhile, it has been severely impacted by acid rain over many years.
W. Liu   +11 more
doaj   +1 more source

Atmospheric CO2 Consumption by Chemical Weathering in the Main Tributaries of the Yellow River: Tao He, Huang Shui, and Datong He, Originating From the Northeastern Qinghai-Tibet Plateau

open access: yesFrontiers in Earth Science, 2021
The Tao He, Huang Shui, and Datong He originate from the northeastern margin of the Qinghai-Tibet Plateau (QTP) and flow into the Yellow River on the Loess Plateau (LP), all with a basin area exceeding 15,000 km2, and are the three largest tributaries of
Zhuoma Yongji   +6 more
doaj   +1 more source

The Weathering Microbiome of an Outcropping Granodiorite

open access: yesFrontiers in Microbiology, 2020
Microorganisms have long been recognized for their capacity to catalyze the weathering of silicate minerals. While the vast majority of studies on microbially mediated silicate weathering focus on organotrophic metabolism linked to nutrient acquisition ...
Stephanie A. Napieralski, Eric E. Roden
doaj   +1 more source

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