Base on Gibbs diagram and relative ion ratios, the hydrochemical characteristics are derived from weathering of silicate rocks and atmospheric source. The influence of anthropogenic factors including agro-industrial activities on the hydrochemical characteristics was less marked. The chemical composition of ...
The major cations in seawater (Table 7.7) originate from chemical weathering of Earth's crust. The major anions result from acid deposition from volcanic activity—hydrochloric and sulfuric acid—and atmospheric CO2. Acid deposition neutralizes most of the alkalinity resulting from chemical weathering ...
It is very higher than the natural limit (5–25 mg/L) in that area which strongly supports the dissolution and the weathering effect of the hardrock that are extracted and stock filled in the mine area which contains 50.17–74.7% (by weight) of SiO2. Though, silica ingested orally is ...
Kaolinite is a crucial industrial sheet-structured silicate clay mineral with chemical formula-Al2Si2O5(OH)4 and consisting of SiO4 tetrahedral and Al(O,OH)6 octahedral sheets in the ratio of 1:1, formed by weathering of rocks (Varga, 2007). ...
Four billion years ago, Earth’s surface was covered with a thick basaltic crust and, similar to other rocky planets and the Moon, parts of this basaltic crust underwent partial melting to produce silicic crust. On Earth, silicic crust grew into the cont
F. Evidence for very early migration of the Solar System planets from the Patroclus–Menoetius binary Jupiter Trojan. Nat. Astron. 2, 878–882 (2018). Article Google Scholar Hurowitz, J. A. & McLennan, S. M. A ∼3.5 Ga record of water-limited, acidic weathering conditions on Mars....
The lake receives most of its dissolved constituents from the drainage basin and groundwater. In this paper, the focus is mainly on (1) the influence of weathering on the dissolved constituent of the lake water, and (2) the effect of seasonal variability on the chemical composition of the ...
Eyssautier-Chuine S, Marin B, Thomachot-Schneider C, Fronteau G, Schneider A, Gibeaux S, Vazquez P (2016) Simulation of acid rain weathering effect on natural and artificial carbonate stones. Environ Earth Sci 75:1–19 Article CAS Google Scholar Farquharson JI, Wild B, Kushnir ARL, ...
On still smaller scales, the surfaces of many lunar grains display evidence for space weathering in the form of impact-generated melt splashes or vapor deposits. Impact also produces metallic-Fe beads over a wide range of sizes by reducing oxidized iron from mafic minerals at the high ...
The weathering of rocks consumes CO2. In the past, when CO2 concentrations were higher, exposed rocks were weathered. Currently, the weathering process is more intense in the soil. There, CO2 concentrations are much higher than the 0.036% found in the atmosphere, typically reaching several percent...