Geochronology of Lower Crustal Cumulate Complexes in the Kohistan Terrane, North-East Pakistan

Jack Edward Stirling

doi:10.4225/23/594a1895df0c7

Geochronology of Lower Crustal Cumulate Complexes in the Kohistan Terrane, North-East Pakistan

Jack Edward Stirling

Research output: Thesis › Master's Thesis

542 Downloads (Pure)

Abstract

The Kohistan Arc Complex (KAC) is a uniquely preserved island arc exposing the world 's most complete cross-section through arc-generated crust. Island arcs are suggested to generate andesitic crust reminiscent of bulk continental crust compositions. However, mechanisms by which the basaltic parent is differentiated towards a composition akin to bulk continental crust is debated. Commonly suggested to occur through crustal underplating and delamination, geochronological data should exhibit a definable age gradient throughout the arc. New ID-TIMS U-Pb ages provide the first radio-isotopic evidence of a younging age gradient in the KAC, providing the first geochronological evidence for crustal underplating and delamination.

Original language	English
Qualification	Masters
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Denyszyn, Steven, Supervisor Fiorentini, Marco, Supervisor
Award date	14 Feb 2017
DOIs	https://doi.org/10.4225/23/594a1895df0c7
Publication status	Unpublished - 2016

Access to Document

10.4225/23/594a1895df0c7

THESIS - MASTER OF SCIENCE - STIRLING Jack Edward - 2016
This work is protected by Copyright. You may print or download ONE copy of this document for the purpose of your own non-commercial research or study. Any other use requires permission from the copyright owner. The Copyright Act requires you to attribute any copyright works you quote or paraphrase.

Cite this

@mastersthesis{aff6540bf3b746d183f7c668a771629e,

title = "Geochronology of Lower Crustal Cumulate Complexes in the Kohistan Terrane, North-East Pakistan",

abstract = "The Kohistan Arc Complex (KAC) is a uniquely preserved island arc exposing the world 's most complete cross-section through arc-generated crust. Island arcs are suggested to generate andesitic crust reminiscent of bulk continental crust compositions. However, mechanisms by which the basaltic parent is differentiated towards a composition akin to bulk continental crust is debated. Commonly suggested to occur through crustal underplating and delamination, geochronological data should exhibit a definable age gradient throughout the arc. New ID-TIMS U-Pb ages provide the first radio-isotopic evidence of a younging age gradient in the KAC, providing the first geochronological evidence for crustal underplating and delamination.",

keywords = "Geochemistry, Geochronology, Kohistan Arc, Crustal underplating and delamination",

author = "Stirling, {Jack Edward}",

year = "2016",

doi = "10.4225/23/594a1895df0c7",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - Geochronology of Lower Crustal Cumulate Complexes in the Kohistan Terrane, North-East Pakistan

AU - Stirling, Jack Edward

PY - 2016

Y1 - 2016

N2 - The Kohistan Arc Complex (KAC) is a uniquely preserved island arc exposing the world 's most complete cross-section through arc-generated crust. Island arcs are suggested to generate andesitic crust reminiscent of bulk continental crust compositions. However, mechanisms by which the basaltic parent is differentiated towards a composition akin to bulk continental crust is debated. Commonly suggested to occur through crustal underplating and delamination, geochronological data should exhibit a definable age gradient throughout the arc. New ID-TIMS U-Pb ages provide the first radio-isotopic evidence of a younging age gradient in the KAC, providing the first geochronological evidence for crustal underplating and delamination.

AB - The Kohistan Arc Complex (KAC) is a uniquely preserved island arc exposing the world 's most complete cross-section through arc-generated crust. Island arcs are suggested to generate andesitic crust reminiscent of bulk continental crust compositions. However, mechanisms by which the basaltic parent is differentiated towards a composition akin to bulk continental crust is debated. Commonly suggested to occur through crustal underplating and delamination, geochronological data should exhibit a definable age gradient throughout the arc. New ID-TIMS U-Pb ages provide the first radio-isotopic evidence of a younging age gradient in the KAC, providing the first geochronological evidence for crustal underplating and delamination.

KW - Geochemistry

KW - Geochronology

KW - Kohistan Arc

KW - Crustal underplating and delamination

U2 - 10.4225/23/594a1895df0c7

DO - 10.4225/23/594a1895df0c7

M3 - Master's Thesis

ER -

Geochronology of Lower Crustal Cumulate Complexes in the Kohistan Terrane, North-East Pakistan

Abstract

Access to Document

Fingerprint

Cite this