Results 31 to 40 of about 6,060 (205)

The influence of oceanic oxidation on serpentinite dehydration during subduction [PDF]

open access: yes, 2018
Serpentinites are central to carry water and fluid-mobile elements down subduction zones. The breakdown of antigorite represents the most prominent aqueous fluid release, boosting fluid-mediated element cycling from the slab to the mantle wedge. At Cerro
Pettke, Thomas   +2 more
core   +3 more sources

西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]

open access: yes, 2010
This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core   +1 more source

The Impact of Mineralogical Characteristics on the Physicomechanical Properties of Serpentinite from Prang Ghar, Mohmand District, Pakistan

open access: yesInternational Journal of Economic and Environment Geology
The serpentinite samples of the Prang Ghar Mohmand Agency were analysed petrographically and physicomechanically to assess their potential as dimension stone and aggregate material.
M. Naveed Anjum   +4 more
doaj   +1 more source

Application of the shrinking core model for dissolution of serpentinite in an acid solution

open access: yesE3S Web of Conferences, 2016
Serpentinites have the potential to be used as carbo dioxide capture and storage materials. Acid dissolution is the first stage of this process. This study examined how a shrinking core model can be applied to the dissolution of serpentinite in sulphuric
Didyk-Mucha Agnieszka   +2 more
doaj   +1 more source

Origin of the serpentinites in the Lichi mélange, eastern Taiwan, China: implication from petrology and geochronology

open access: yesChina Geology, 2018
: Lichi mélange, located in the southern coastal range, eastern Taiwan, China, is a typical tectonic mélange of the plate’s boundary zone between the Eurasian Plate and the Philippine Sea Plate.
Long Huang, Wei Geng, Zhi-lei Sun
doaj   +1 more source

Cyanobacterial Mats in Calcite-Precipitating Serpentinite-Hosted Alkaline Springs of the Voltri Massif, Italy

open access: yesMicroorganisms, 2020
(1) Background: Microbial communities in terrestrial, calcifying high-alkaline springs are not well understood. In this study, we investigate the structure and composition of microbial mats in ultrabasic (pH 10–12) serpentinite springs of the Voltri ...
Aysha Kamran   +5 more
doaj   +1 more source

Emergent Feedbacks Between Progressive Serpentinization, Interface Weakening, and Subduction Rates

open access: yesGeochemistry, Geophysics, Geosystems
During subduction, the downgoing oceanic crust is exposed to high temperatures in the mantle wedge, causing volatile‐bearing minerals to break down and release hydrous fluids into the forearc.
R. K. Stoner   +4 more
doaj   +1 more source

Role of structural inheritance in the gravitational deformation of the Monviso meta-ophiolite Complex: the Pui-Orgiera serpentinite landslide (Varaita Valley, Western Alps)

open access: yesJournal of Maps, 2019
Depending on its chemical and mineralogical composition, the serpentinite represents a peculiar rocky material, which plays a significant role in influencing pedogenetic weathering, vegetation ecology, geo-mechanical and tectonic processes, as well as ...
Gianfranco Fioraso   +3 more
doaj   +1 more source

Potencial uso de serpentinito no armazenamento mineral do CO2

open access: yesQuímica Nova, 2013
Rising anthropogenic CO2 emissions are considered a major contributor to the greenhouse effect. There are several options for reducing atmospheric CO2 levels, and among these alternatives, Carbon Capture and Storage (CCS) has been identified as an ...
Natacha Alves   +6 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

open access: yesGeological 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   +6 more
wiley   +1 more source

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