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Locating earliest records of orogenesis in the western Himalaya : evidence from the paleogene sediments in the Iranian Makran and Pakistan Katawaz basin.

Research output: Contribution to journalJournal article

Published

  • Andrew Carter
  • Yani Najman
  • Abbas Bahroudi
  • Paul Bown
  • Eduardo Garzanti
  • Robert D. Lawrence
Journal publication date09/2010
JournalGeology
Journal number9
Volume38
Number of pages4
Pages807-810
Original languageEnglish

Abstract

A combination of sediment petrography, detrital zircon U-Pb, and fission-track dating is used to show that provenance of the Paleogene sedimentary rocks exposed in the Makran region of southern Iran and the Katawaz basin of Pakistan is consistent with a source from the nascent western Himalaya and associated magmatic arc. Results from this important archive show that Paleogene erosion was focused mainly on the arc and northern Indian margin, and, in contrast to the east-central Himalaya, we have not detected widespread rapid exhumation indicative of strong forcing by climate-driven erosion at that time.