Pressure-temperature evolution of Neoproterozoic metamorphism in the Welayati Formation (Kabul Block), Afghanistan

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10312207" target="_blank" >RIV/00216208:11310/15:10312207 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jseaes.2015.06.002" target="_blank" >http://dx.doi.org/10.1016/j.jseaes.2015.06.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jseaes.2015.06.002" target="_blank" >10.1016/j.jseaes.2015.06.002</a>

Result language
angličtina
Original language name
Pressure-temperature evolution of Neoproterozoic metamorphism in the Welayati Formation (Kabul Block), Afghanistan
Original language description
The Welayati Formation, consisting of alternating layers of mica-schist and quartzite with lenses of amphibolite, unconformably overlies the Neoarchean Sherdarwaza Formation of the Kabul Block that underwent Paleoproterozoic granulite-facies and Neoproterozoic amphibolite-facies metamorphic events. To analyze metamorphic history of the Welayati Formation and its relations to the underlying Sherdarwaza Formation, petrographic study and pressure-temperature (P-T) pseudosection modeling were applied to staurolite- and kyanite-bearing mica-schists, which crop out to the south of Kabul City. Prograde metamorphism, identified by inclusion trails and chemical zonation in garnet from the micaschists indicates that the rocks underwent burial from around 6.2 kbar at 525 degrees C to maximum pressure conditions of around 9.5 kbar at temperatures of around 650 degrees C. Decompression from peak pressures under isothermal or moderate heating conditions are indicated by formation of biotite and plag
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Project
<a href="/en/project/GA13-06958S" target="_blank" >GA13-06958S: Mineral and textural signatures recording pre-exhumation and pre-collision history of the HP/UHPM rocks in orogenic zone</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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