Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 1/09/2019 |
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<mark>Journal</mark> | Geological Society of America Bulletin |
Issue number | 9-10 |
Volume | 131 |
Number of pages | 16 |
Pages (from-to) | 1607-1622 |
Publication Status | Published |
Early online date | 29/03/19 |
<mark>Original language</mark> | English |
The Bengal Fan provides a Neogene record of Eastern and Central Himalaya exhumation. We provide the first detrital thermochronological study (apatite and rutile U-Pb, mica Ar-Ar, zircon fission track) of sediment samples collected during International Ocean Discovery Program (IODP) Expedition 354 to the mid-Bengal Fan. Our data from rutile and zircon fission-track thermochronometry show a shift in lag times over the interval 5.59-3.47 Ma. The oldest sample with a lag time of 6 m.y.) has a depositional age of 5.594.50 Ma, and the zircon and rutile populations then show a static peak until >12 Ma. This interval, from 5.59-4.50 Ma to >12 Ma, is most easily interpreted as recording passive erosion of the Greater Himalaya. However, single grains with lag times of