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Provenance of the Tertiary sedimentary rocks of the Indo-Burman Ranges, Burma (Myanmar); Burman arc or Himalayan-derived?

R. Allen, Y. Najman, A. Carter, D. Barfod, M. J. Bickle, H. J. Chapman, E. Garzanti, G. Vezzoli, S. Ando and R. R. Parrish
Provenance of the Tertiary sedimentary rocks of the Indo-Burman Ranges, Burma (Myanmar); Burman arc or Himalayan-derived?
Journal of the Geological Society of London (December 2008) 165 (6): 1045-1057

Abstract

The Indo-Burman Ranges in western Myanmar extend along the Sunda Arc subduction zone and may be divided into a western portion of Neogene sedimentary rocks and an eastern portion of Palaeogene sedimentary rocks, separated by the Kaladan Fault. Both Himalayan and Burman sources have been proposed for these sediments. Our thermochronological analyses on detrital grains, isotopic analyses on bulk rock, and petrographic and heavy mineral data indicate that the Palaeogene Indo-Burman Ranges contain a significant component of arc-derived material, interpreted as derived from the Burmese portion of the Mesozoic-Tertiary arc to the east. And older crustal component is also identifiable, which may have been sourced from the Himalaya or the Burmese margin. By contrast, the Neogene Indo-Burman Ranges show dominant derivation from the Himalaya. A minor arc-derived component may have been sourced from the Trans-Himalaya, or recycled from the arc-derived Paleogene Indo-Burman Ranges.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 165
Serial Issue: 6
Title: Provenance of the Tertiary sedimentary rocks of the Indo-Burman Ranges, Burma (Myanmar); Burman arc or Himalayan-derived?
Affiliation: Lancaster University, Department of Environmental Science, Lancaster, United Kingdom
Pages: 1045-1057
Published: 200812
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 70
Accession Number: 2008-129024
Categories: StratigraphySedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch map
N17°45'00" - N18°19'60", E92°49'60" - E94°19'60"
Secondary Affiliation: University College London, GBR, United KingdomScottish Universities Environmental Research Centre, GBR, United KingdomCambridge University, GBR, United KingdomUniversita Milano-Bicocca, ITA, ItalyBritish Geological Survey, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200850
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