Temporal links between pluton emplacement, garnet granulite metamorphism, partial melting and extensional collapse in the lower crust of a Cretaceous magmatic arc, Fiordland, New Zealand

2014 ◽  
Vol 32 (2) ◽  
pp. 151-175 ◽  
Author(s):  
H. Stowell ◽  
K. Odom Parker ◽  
M. Gatewood ◽  
A. Tulloch ◽  
A. Koenig
Keyword(s):  
New Zealand ◽  
Partial Melting ◽  
Lower Crust ◽  
Pluton Emplacement ◽  
Magmatic Arc ◽  
Granulite Metamorphism ◽  
Garnet Granulite ◽  
Extensional Collapse

GARNET SM-ND AGE CONSTRAINTS ON GRANULITE METAMORPHISM IN THE LOWER CRUST OF THE FIORDLAND MAGMATIC ARC, NEW ZEALAND

2018 ◽  
Author(s):  
Ryan L. Rogers ◽  
◽  
James W. Yelverton ◽  
Harold H. Stowell ◽  
Elizabeth M. Bollen ◽  
...  
Keyword(s):  
New Zealand ◽  
Lower Crust ◽  
Magmatic Arc ◽  
Granulite Metamorphism ◽  
Age Constraints

Timing and duration of garnet granulite metamorphism in magmatic arc crust, Fiordland, New Zealand

2010 ◽  
Vol 273 (1-2) ◽  
pp. 91-110 ◽  
Author(s):  
Harold Stowell ◽  
Andrew Tulloch ◽  
Carlos Zuluaga ◽  
Alan Koenig
Keyword(s):  
New Zealand ◽  
Magmatic Arc ◽  
Granulite Metamorphism ◽  
Garnet Granulite

WIDESPREAD GARNET GRANULITE METAMORPHISM IN THE LOWER CRUST OF A CONTINENTAL MAGMATIC ARC, FIORDLAND NZ

2016 ◽  
Author(s):  
Harold Stowell ◽  
◽  
Joshua J. Schwartz ◽  
Keith Klepeis ◽  
Andrew Tulloch ◽  
...  
Keyword(s):  
Lower Crust ◽  
Magmatic Arc ◽  
Granulite Metamorphism ◽  
Garnet Granulite ◽  
Continental Magmatic Arc

STRAIN ACCOMMODATION AND 3D KINEMATICS OF TRANSPRESSIONAL FLOW WITHIN THE LOWER CRUST OF A CRETACEOUS MAGMATIC ARC IN FIORDLAND NEW ZEALAND

2018 ◽  
Author(s):  
Griffin A. Moyer ◽  
◽  
Jesse Lee ◽  
Christopher Eddy ◽  
Elena A. Miranda ◽  
...  
Keyword(s):  
New Zealand ◽  
Lower Crust ◽  
3D Kinematics ◽  
Magmatic Arc

Early Cenozoic partial melting of meta-sedimentary rocks of the eastern Gangdese arc, southern Tibet, and its contribution to syn-collisional magmatism

2021 ◽  
Author(s):  
Yuan-Yuan Jiang ◽  
Ze-Ming Zhang ◽  
Richard M. Palin ◽  
Hui-Xia Ding ◽  
Xuan-Xue Mo
Keyword(s):  
Partial Melting ◽  
Lower Crust ◽  
Sedimentary Rocks ◽  
Late Carboniferous ◽  
Southern Tibet ◽  
Magmatic Arc ◽  
Magmatic Rocks ◽  
Deep Crust ◽  
Juvenile Crust ◽  
Early Cenozoic

Continental magmatic arcs are characterized by the accretion of voluminous mantle-derived magmatic rocks and the growth of juvenile crust. However, significant volumes of meta-sedimentary rocks occur in the middle and lower arc crust, and the contributions of these rocks to the evolution of arc crust remain unclear. In this paper, we conduct a systematic study of petrology, geochronology, and geochemistry of migmatitic paragneisses from the eastern Gangdese magmatic arc, southern Tibet. The results show that the paragneisses were derived from late Carboniferous greywacke, and underwent an early Cenozoic (69−41 Ma) upper amphibolite-facies metamorphism and partial melting at pressure-temperature conditions of ∼11 kbar and ∼740 °C, and generated granitic melts with enriched Hf isotopic compositions (anatectic zircon εHf(t) = −10.57 to +0.78). Combined with the existing results, we conclude that the widely distributed meta-sedimentary rocks in the eastern Gangdese arc deep crust have the same protolith ages of late Carboniferous, and record northwestward-decreasing metamorphic conditions. We consider that the deeply buried sedimentary rocks resulted in the compositional change of juvenile lower crust from mafic to felsic and the formation of syn-collisional S-type granitoids. The mixing of melts derived from mantle, juvenile lower crust, and ancient crustal materials resulted in the isotopic enrichment of the syn-collisional arc-type magmatic rocks of the Gangdese arc. We suggest that crustal shortening and underthrusting, and the accretion of mantle-derived magma during the Indo-Asian collision transported the supracrustal rocks to the deep crust of the Gangdese arc.

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