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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-06958S" target="_blank" >GA13-06958S: Záznam minerálních a texturních znaků před exhumačního a před kolizního vývoje HP/UHP hornin v orogenní zóně</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Asian Earth Sciences

ISSN

1367-9120

e-ISSN

—

Svazek periodika

111

Číslo periodika v rámci svazku

NOV 1 2015

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

698-710

Kód UT WoS článku

000362603300048

EID výsledku v databázi Scopus

2-s2.0-84955662515