Switching From Subduction Zone Advance to Retreat Explains the Late Paleozoic Evolution of the East Junggar System, Central Asian Orogenic Belt

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F24%3A10169071" target="_blank" >RIV/00025798:_____/24:10169071 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1029/2024TC008254" target="_blank" >https://doi.org/10.1029/2024TC008254</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2024TC008254" target="_blank" >10.1029/2024TC008254</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Switching From Subduction Zone Advance to Retreat Explains the Late Paleozoic Evolution of the East Junggar System, Central Asian Orogenic Belt

Popis výsledku v původním jazyce

The geodynamic evolution of the East Junggar is examined by means of satellite imaging and field-based structural studies, U-Pb zircon geochronology and analysis of potential field geophysical data in the Yemaquan arc and the Dulate back-arc systems. The northern Yemaquan arc shows a pervasive WNW-ESE steep S1 foliation that is related to the exhumation of Armantai ophiolitic m &amp; eacute;lange in an F1 antiformal structure. The bedding of the Dulate sequences is folded by N-S-trending F1 upright folds that are preserved in low strain domains. The timing of D1 is estimated between 310 and 280 Ma. During D2, previously folded Dulate sequences were orthogonally refolded by E-W-trending F2 upright folds, resulting in Type-1 basin and dome interference pattern and pervasive E-W trending S2 cleavage zones. The age of D2 is constrained to be 270-250 Ma based on the dating of syn-tectonic pegmatites and deposition of syn-orogenic sedimentary rocks. The boundary between the Yemaquan arc and Dulate back-arc basin experienced reactivation through D2 dextral transpressive shear zones. The D1 fabrics are the consequence of the closure of the Dulate back-arc basin due to the advancing mode of Kalamaili subduction. Almost orthogonal Permian D2 fabrics were generated by the N-S shortening of the East Junggar and the northward movement of the Junggar Block indenter. This D2 deformation was associated with the anticlockwise rotation of the southern limb of the Mongolian Orocline, the scissor-like closure of the northerly Mongol-Okhotsk Ocean and the collision of the Mongolian and the Tarim-North China craton collages. The Yemaquan arc and Dulate back-arc are affected by 310-280 Ma D1 and 270-250 Ma D2 events D1 results from advancing mode of the Kalamaili subduction zone, and the closure of the Dulate back-arc basin D2 results from the collisional reworking of the East Junggar system and indentation of Junggar promontory

Název v anglickém jazyce

Switching From Subduction Zone Advance to Retreat Explains the Late Paleozoic Evolution of the East Junggar System, Central Asian Orogenic Belt

Popis výsledku anglicky

The geodynamic evolution of the East Junggar is examined by means of satellite imaging and field-based structural studies, U-Pb zircon geochronology and analysis of potential field geophysical data in the Yemaquan arc and the Dulate back-arc systems. The northern Yemaquan arc shows a pervasive WNW-ESE steep S1 foliation that is related to the exhumation of Armantai ophiolitic m &amp; eacute;lange in an F1 antiformal structure. The bedding of the Dulate sequences is folded by N-S-trending F1 upright folds that are preserved in low strain domains. The timing of D1 is estimated between 310 and 280 Ma. During D2, previously folded Dulate sequences were orthogonally refolded by E-W-trending F2 upright folds, resulting in Type-1 basin and dome interference pattern and pervasive E-W trending S2 cleavage zones. The age of D2 is constrained to be 270-250 Ma based on the dating of syn-tectonic pegmatites and deposition of syn-orogenic sedimentary rocks. The boundary between the Yemaquan arc and Dulate back-arc basin experienced reactivation through D2 dextral transpressive shear zones. The D1 fabrics are the consequence of the closure of the Dulate back-arc basin due to the advancing mode of Kalamaili subduction. Almost orthogonal Permian D2 fabrics were generated by the N-S shortening of the East Junggar and the northward movement of the Junggar Block indenter. This D2 deformation was associated with the anticlockwise rotation of the southern limb of the Mongolian Orocline, the scissor-like closure of the northerly Mongol-Okhotsk Ocean and the collision of the Mongolian and the Tarim-North China craton collages. The Yemaquan arc and Dulate back-arc are affected by 310-280 Ma D1 and 270-250 Ma D2 events D1 results from advancing mode of the Kalamaili subduction zone, and the closure of the Dulate back-arc basin D2 results from the collisional reworking of the East Junggar system and indentation of Junggar promontory

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GX19-27682X" target="_blank" >GX19-27682X: Hlavní mechanismy periferálního kontinentálního růstu během superkontinentálního cyklu</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Tectonics

ISSN

0278-7407

e-ISSN

1944-9194

Svazek periodika

43

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

25

Strana od-do

—

Kód UT WoS článku

001235658400001

EID výsledku v databázi Scopus

2-s2.0-85195123472