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

Allen, R., Najman, Y., Carter, A., Barfod, D., Bickle, M.J., Chapman, H.J., Garzanti, E., Vezzoli, G., Ando, S. and Parrish, R.R. (2008) Provenance of the Tertiary sedimentary rocks of the Indo-Burman Ranges, Burma (Myanmar): Burman arc or Himalayan-derived? Journal of the Geological Society, 165(6), pp. 1045-1057. (doi:10.1144/0016-76492007-143)

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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 cast. 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 form the Trans-Himalaya or recycled from the arc-derived Paleogene Indo-Burman Ranges.

Item Type:Articles
Additional Information:Dan Barfod provided analytical support, data interpretation and text for this manuscript, along with student training.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barfod, Dr Dan
Authors: Allen, R., Najman, Y., Carter, A., Barfod, D., Bickle, M.J., Chapman, H.J., Garzanti, E., Vezzoli, G., Ando, S., and Parrish, R.R.
Subjects:Q Science > QE Geology
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Journal of the Geological Society
ISSN:0016-7649

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