Results 31 to 40 of about 26,831 (245)

Occurrence of a Likely Tuff Bed between the Middle and Upper Siwaliks, Taunsa area, Dera Ghazi Khan, Eastern Sulaiman Range, Pakistan

open access: yesInternational Journal of Economic and Environment Geology, 2020
A likely tuff bed lies along the gradational contact of the Middle and Upper Siwaliksineastern Sulaiman Range, Taunsa areaofDera GhaziKhan district, Pakistan.
Rahman Ullah, Nie Fengjuin, Zhang Chengyong, Saqib Izhar, Idrees Safdar, Zhang Xin, Asim Ali
doaj   +1 more source

The propylitic alteration in the Ponce Enriquez Gold Mining district, Azuay province, Ecuador: genetic constraints from a mineral chemistry and fluid inclusions study

open access: yesFrontiers in Earth Science, 2023
Wide areas of the Southern sector of Ecuador are characterized by Cretaceous mafic volcanic rocks, pervasively altered by a propylitic mineralogical assemblage with epidote, chlorite, and quartz with minor titanite, illite and prehnite.
Paolo Fulignati   +9 more
doaj   +1 more source

The chlorite adduct of aquacobalamin: contrast with chlorite dismutase

open access: yesJBIC Journal of Biological Inorganic Chemistry
Abstract In the reaction of aquacobalamin (aquaCbl) with chlorite, a stable species is detected and assigned as a Co(III)–chlorite complex, Co(III)–OClO−. Its UV–Vis spectrum is almost identical to that of aquaCbl, except for some minor differences at ~ 430 nm; cyanide can eliminate and prevent these changes.
Lehene, Maria   +6 more
openaire   +3 more sources

Near Infrared Spectroscopic Study of Trioctahedral Chlorites and Its Remote Sensing Application

open access: yesOpen Geosciences, 2019
The mineral chemistry of thirteen trioctahedral chlorite samples from four regions in northwestern China, having a wide range of Fe and Mg contents and relatively constant Al and Si contents, were studied via raman spectroscopy, near infrared (NIR ...
Yang Min   +7 more
doaj   +1 more source

PT-FORMATION CONDITIONS OF POLYMETALLIC ORES FROM THE Pb-Zn-Fe AKTASH SKARN DEPOSIT (WESTERN KARAMAZAR, TAJIKISTAN) [PDF]

open access: yesМинералогия, 2021
Fluid inclusions are studied in calcite from magnetite ores and sulfide-carbonate veins of the Aktash sulfide-magnetite deposit (Western Karanazar, Tajikistan) to identify their formation conditions.
U.A. Yatimov   +2 more
doaj   +1 more source

Was the Kalkarindji Continental Flood Basalt Province a Driver of Environmental Change at the Dawn of the Phanerozoic?

open access: yesGeophysical Monograph Series, Page 435-447., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall   +2 more
wiley  

+1 more source

Deciphering temperature, pressure and oxygen-activity conditions of chlorite formation [PDF]

open access: yes, 2016
International audienceThe advantages and limits of empirical, semi-empirical and thermodynamic methods devoted to the estimation of chlorite-formation temperature are discussed briefly.
Manuel Munoz   +9 more
core   +2 more sources

Experimental study on reaction of chlorite with CO2 aqueous solution

open access: yesYouqicang pingjia yu kaifa, 2022
During the reaction between CO2 and rocks, there is a synergistic/coupling effect among minerals because the rocks contain quartz, potassium feldspar, albite and other components, which promotes or inhibits the reaction process to a certain extent.
DENG Jiasheng   +5 more
doaj  

Features of the mineralogical composition of solod and solod meadow-chestnut soil, the case of soils of the liman depression at Dzhanybek research station of the Institute of Forest Science RAS

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2023
The structure of the soil cover at the territory of the clayey semidesert of the Northern Caspian Sea is represented by triparted soil complex and peculiar soils like solod.
E. B. Varlamov   +4 more
doaj   +1 more source

Experimental diagenesis using present-day submarine turbidite sands

open access: yesFrontiers in Earth Science, 2022
Hydrothermal-reactor experiments were conducted to investigate the potential formation of chlorite and microquartz grain coatings on detrital quartz and feldspar grains, and to understand their role in inhibiting the formation of quartz and feldspar ...
Abdulwahab Muhammad Bello   +6 more
doaj   +1 more source

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