Results 81 to 90 of about 824,380 (294)

A Reproducible SEM Surface Imaging Protocol for Monitoring Microstructural Changes During Gas–Rock Interactions

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Reliable characterization of mineralogical and textural changes in rock samples is essential for understanding fluid–rock interactions, particularly in experimental studies simulating subsurface conditions. This study presents a reproducible protocol for scanning electron microscopy (SEM) analysis of rock surfaces before and after exposure to ...
Berta Ordóñez‐Casado, Timea Kovács, Sara Roces, Edgar Berrezueta   +3 more
wiley   +1 more source

Lithium isotopes trace silicate weathering-driven authigenic carbonate formation in marine sediments

Communications Earth & Environment
Marine authigenic carbonates are considered a major long-term carbon sink, yet the role of silicate weathering in their formation remains unclear. Here we use lithium isotope compositions of authigenic carbonates from the Gulf of Mexico to trace the ...
Huiwen Huang, Shanggui Gong, Jörn Peckmann, Tao Sun, Weihai Xu, Wen Yan, Dong Feng   +6 more
doaj   +1 more source

The circular nutrient economy of terrestrial ecosystems and the consequences for rock weathering

Frontiers in Environmental Science, 2023
Earth’s biosphere is thought to exert a substantial influence on regolith evolution and chemical weathering rates. However, ecosystems are also highly efficient at retaining and recycling nutrients.
Kate Maher, Friedhelm von Blanckenburg, Friedhelm von Blanckenburg   +2 more
doaj   +1 more source

Limit cycles can reduce the width of the habitable zone

, 2016
The liquid water habitable zone (HZ) describes the orbital distance at which a terrestrial planet can maintain above-freezing conditions through regulation by the carbonate-silicate cycle.
Batalha, Natasha E., Haqq-Misra, Jacob, Harman, Chester E., Kasting, James F., Kopparapu, Ravi Kumar   +4 more
core   +1 more source

Silicate Weathering Throttles the Global Thermostat

Eos, 2023
The natural breakdown of some rocks sucks carbon dioxide out of the atmosphere. Knowing how quickly it happens could help scientists engineer solutions to the climate crisis.
openaire   +1 more source

Geoengineering potential of artificially enhanced silicate weathering of olivine [PDF]

Proceedings of the National Academy of Sciences, 2010
Geoengineering is a proposed action to manipulate Earth’s climate in order to counteract global warming from anthropogenic greenhouse gas emissions. We investigate the potential of a specific geoengineering technique, carbon sequestration by artificially enhanced silicate weathering via the dissolution of olivine.
Köhler, Peter, Hartmann, Jens, Wolf-Gladrow, Dieter   +2 more
openaire   +5 more sources

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

CO2 Consumption Rates in the Glacierized Himalayan Headwaters: The Importance of Sulfuric and Nitric Acid‐Mediated Chemical Weathering Reactions in Geologic Carbon Cycle

Geochemistry, Geophysics, Geosystems, 2023
Silicate and carbonate weathering reactions consume atmospheric CO2 depending on the type of weathering agents, namely carbonic (H2CO3), sulfuric (H2SO4), and nitric acids (HNO3), and have potential climate implications.
Nita Roy, Indra S. Sen
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

Advanced Functional Materials for Marine Energy Utilization

Interdisciplinary Materials, EarlyView.
Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu, Peipei Ge, Fazhou Wang, Shichao Bi, Bo Tang, Ion Tiginyanu, Kenneth I. Ozoemena, Xiao‐Yu Yang   +7 more
wiley   +1 more source