Results 71 to 80 of about 164,938 (266)

Rainfall amplified sea-level control on silicate weathering in the Indo-Pacific Convergence Zone during Quaternary glacials

Communications Earth & Environment
The Indo-Pacific Convergence Zone is a key carbon sink via silicate weathering, yet its glacial-interglacial carbon dioxide consumption remains unclear.
Yifei Yang, Zhaokai Xu, Debo Zhao, Shiming Wan   +3 more
doaj   +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

A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]

, 2007
The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA, Shields, G. A.
core  

Bryozoan‐Rich Carbonate Units of the Erfoud Area (SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

Geological Journal, EarlyView.
In this study, we re‐examine the depositional architecture of the Erfoud limestone in Morocco. Introducing new biostratigraphic constraints from chitinozoan assemblages, we show that Katian to Hirnantian bryozoan‐pelmatozoan meadows reflect flooding events linked to a series of interglacial transgressions known to have occurred immediately prior to the
Philippe Razin, Jean‐François Ghienne, Amira Meddour, Lorena Tessitore, Thijs R. A. Vandenbroucke   +4 more
wiley   +1 more source

Dissolved load, chemical weathering, and CO2 uptake dynamics of small tropical mountainous rivers of Southern Granulite Terrain, Karamana and Vamanpuram, Western Ghats, India

Scientific Reports
Chemical weathering in a river basin is a key geochemical process that controls fluxes between the atmosphere, land, and ocean, playing a crucial role in regulating Earth’s climate, particularly the small tropical mountainous rivers with high weathering ...
B. Upendra, M. Ciba, S. Rahul, G. Sreenivasulu, S. Kiran Kumar Reddy, V. Arun, K. Anoop Krishnan   +6 more
doaj   +1 more source

The Role of Sulfuric Acid in Continental Weathering: Insights From Dissolved Major Ions and Inorganic Carbon Isotopes of the Teesta River, Lower Brahmaputra System

Geochemistry, Geophysics, Geosystems, 2021
Chemical weathering in the Himalayan river basins plays a key role in the global carbon cycle that controls the climate. In this contribution, the spatial distribution of dissolved major ions and (inorganic) carbon isotopic compositions of the Teesta ...
Satyabrata Das, Gyana Ranjan Tripathy, Santosh K. Rai, Mohd Danish, Divya Thakur, Som Dutt, Shushanta Sarangi   +6 more
doaj   +1 more source

Assessment of Weathering Steel Bridge Performance in Iowa and Development of Inspection and Maintenance Techniques, RB17-012, 2013 [PDF]

, 2013
Weathering steel is commonly used as a cost-effective alternative for bridge superstructures, as the costs and environmental impacts associated with the maintenance/replacement of paint coatings are theoretically eliminated.

core  

The Influence of Soil Properties on the Agronomic Efficacy of Rock Dust: A Comparative Analysis of a Semiarid Ultisol and Global Soil Types

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background: Enhanced rock weathering (ERW) using silicate rock dust is a promising strategy for soil remineralization and carbon dioxide removal. However, its agronomic efficacy is highly dependent on soil properties. Aim: This study provides a comprehensive comparative analysis of the influence of soil type on the performance of rock dust ...
Dennis O. Galdino, William De Paiva
wiley   +1 more source

Constraints on the Role of Marine Authigenic Clay Formation in Determining Seawater Lithium Isotope Composition

Geochemistry, Geophysics, Geosystems
Silicate weathering reactions generate alkalinity that drives carbonate burial in the ocean, ultimately considered to balance solid‐earth CO2 degassing.
Charlotte Läuchli, Nestor Gaviria‐Lugo, Anne Bernhardt, Hella Wittmann, Dirk Sachse, Mahyar Mohtadi, Andreas Lückge, Patrick J. Frings   +7 more
doaj   +1 more source

Enhanced silicate weathering during glacial lowstands: new evidence from shelf sediments in the northern South China Sea

Quaternary Science Advances
The enhanced silicate weathering on tropical continental shelves has been linked to the exposure of unconsolidated sediments during glacial lowstands, contributing to atmospheric CO2 consumption.
Yu Cao, Sai Wang, Guangrong Jin, Li Liu, Chuangji Feng, Fatma Yehia, Haiyun Ma, Lihua Liu   +7 more
doaj   +1 more source