Slowing rates of regional exhumation in the western Himalaya; fission track evidence from the Indus Fan

We use apatite fission track ages from sediments recovered by the International Ocean Discovery Program in the Laxmi Basin, Arabian Sea, to constrain exhumation rates in the western Himalaya and Karakoram since 15.5 Ma. With the exception of a Triassic population in the youngest 0.93 Ma samples supp...

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Bibliographic Details
Published in:Geological magazine 2020-06, Vol.157 (6), p.848-863
Main Authors: Zhou, Peng, Carter, Andrew, Li, Yuting, Clift, Peter D
Format: Article
Language:English
Subjects:
absolute age
Age
Apatite
Arabian Sea
Asia
basins
Cenozoic
Climate change
Cooling
dates
Drying
erosion rates
exhumation
Expedition 355
Fission
fission-track dating
foreland basins
Geochronology
Himalayas
Holocene
Indian Ocean
Indian Peninsula
Indus Fan
International Ocean Discovery Program
IODP Site U1456
IODP Site U1457
Isotopes
Jammu and Kashmir
Karakoram
Kohistan
Lag time
Laxmi Basin
Lead
metals
Nanga Parbat
neodymium
nesosilicates
orthosilicates
phosphates
provenance
rare earths
Rivers
Sediment
sediment supply
Sediments
silicates
Soil erosion
Stratigraphy
Studies
temporal distribution
Triassic
U/Pb
upper Cenozoic
Wind
Winds
Zircon
zircon group
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Summary:We use apatite fission track ages from sediments recovered by the International Ocean Discovery Program in the Laxmi Basin, Arabian Sea, to constrain exhumation rates in the western Himalaya and Karakoram since 15.5 Ma. With the exception of a Triassic population in the youngest 0.93 Ma samples supplied from western Peninsular India, apatite fission track ages are overwhelmingly Cenozoic, largely
ISSN:0016-7568
1469-5081
DOI:10.1017/S001675681900092X