Results 61 to 70 of about 164,938 (266)

Groundwater geochemistry and hydrogeochemical processes in the Lower Ganges-Brahmaputra-Meghna River Basin areas, Bangladesh

Journal of Asian Earth Sciences: X, 2021
Groundwater geochemistry and hydrogeochemical processeswere investigated from three different river basins in Bangladesh. The data were collected from BGS website.
N.M. Refat Nasher, Md. Humayan Ahmed
doaj   +1 more source

The research progress in polyethylene oxide polymer electrolytes

FlexMat, EarlyView.
Polyethylene oxide (PEO) has become the mainstream matrix material for solid polymer electrolytes (SPEs) due to its excellent lithium salt complexation ability and processability. However, its high crystallinity results in low ionic conductivity at room temperature and difficulty in suppressing lithium dendrite growth, which significantly hinders the ...
Ying Wei, Yueting Pu, Zheng Zhang, Yang Li, Cheng Yang, Fangju Tao, Xinxin Han, Fangfang Wu, Linghai Xie   +8 more
wiley   +1 more source

Heterogeneity in ice sheets- vs. monsoon rainfall-induced silicate weathering from high to low latitudes

npj Climate and Atmospheric Science
One of the most challenging problems in paleoclimate research is how orbital cyclicities forced Earth’s climate variations during the late Quaternary.
Xuguang Feng, Jianjun Zou, Xuefa Shi, Zhengyao Lu, Hai Cheng, Yi Zhong, Zhengquan Yao, Zhaojie Yu, Hanying Li, Zhi Dong, Debo Zhao, Han Feng, Jiang Dong, Kunshan Wang   +13 more
doaj   +1 more source

Middle Eocene greenhouse warming facilitated by diminished weathering feedback

Nature Communications, 2018
The Middle Eocene Climatic Optimum (MECO) represents a ~500-kyr period of global warming ~40 million years ago and is associated with a rise in atmospheric CO2 concentrations, but the cause of this CO2 rise remains enigmatic.
Robin van der Ploeg, David Selby, Marlow Julius Cramwinckel, Yang Li, Steven M. Bohaty, Jack J. Middelburg, Appy Sluijs   +6 more
doaj   +1 more source

Silicate weathering and CO₂ consumption within agricultural landscapes, the Ohio-Tennessee River Basin, USA [PDF]

Biogeosciences, 2012
Myriad studies have shown the extent of human alteration to global biogeochemical cycles. Yet, there is only a limited understanding of the influence that humans have over silicate weathering fluxes; fluxes that have regulated atmospheric carbon dioxide ...
K. A. Welch, S. A. Welch, M. J. Shipitalo, A. E. Carey, W. B. Lyons, S. K. Fortner   +5 more
doaj   +1 more source

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

MErSiM v1.0: resolving biases in global silicate weathering model with a data-driven surface erosion module [PDF]

Geoscientific Model Development
The silicate weathering feedback is a key planetary thermostat regulating Earth's long-term climate, yet process-based models of this mechanism suffer from biases. The widely-used weathering model framework of Gabet and Mudd (2009), when driven by stream
J. Zhao, Y. Liu, Y. Liu, Y. Liu, Y. Hu, Y. Hu   +5 more
doaj   +1 more source

Seasonal Variations of Chemical Weathering and CO2 Consumption Processes in the Headwater (Datong River Basin) of the Yellow River Draining the Tibetan Plateau

Frontiers in Earth Science, 2022
The Yellow River basin covers contrasting tectonics, climate, and vegetation settings. To explore the seasonal chemical weathering differences from the upstream to downstream of the Yellow River basin, we collected weekly river waters from the Datong ...
Liu Yang, Liu Yang, Fei Zhang, Fei Zhang, Yadan Hu, Yun Zhan, Li Deng, Huayu Huang, Hui Sun, Yaben Wei, Xiangliang Li   +10 more
doaj   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Lithium Isotopes: A Tracer of Past and Present Silicate Weathering [PDF]

, 2021
Lithium isotopes are a relatively novel tracer of present and past silicate weathering processes. Given that silicate weathering is the primary long-term method by which CO2 is removed from the atmosphere, Li isotope research is going through an exciting
Pogge von Strandmann, PAE, West, AJ, Dellinger, M   +2 more
core   +1 more source