Provenance of early foreland basin sediments, Nepal: constraints to the timing and diachroneity of early Himalayan orogenesis.

Lancaster Environment Centre

Text available via DOI:

https://doi.org/10.1130/G21161.1;
Final published version

Keywords

Himalayas, foreland basin, Nepal, fission tracks, detrital zircons, provenance

View graph of relations

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Provenance of early foreland basin sediments, Nepal: constraints to the timing and diachroneity of early Himalayan orogenesis. / Najman, Y.; Carter, Andy; Decelles, P. et al.
In: Geology, Vol. 33, No. 4, 01.04.2005, p. 309-312.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{ba9cb561d2f548c0b67ddf73e14c4b38,

title = "Provenance of early foreland basin sediments, Nepal: constraints to the timing and diachroneity of early Himalayan orogenesis.",

abstract = "In contrast to Eocene Himalayan foreland basin sedimentary deposits in India and Pakistan, coeval sedimentary rocks of the Bhainskati Formation in Nepal contain scant petrographic evidence of orogenic input. Such data have been used as evidence to promote models of diachroneity of India-Asia collision. In this paper we document orogenic input into the Eocene foreland basin rocks of Nepal, from fission-track analyses of detrital zircons. Our data provide evidence that significantly reduces the possible duration of any diachroneity of collision, and brings the interpretation of the sedimentary record into better agreement with ages of early thrusting and metamorphism in the orogen. We also use our detrital fission-track data to bolster previous age determinations of the overlying Dumri Formation, confirming the basin-wide occurrence of a major unconformity. Comparison of our data set with that from coeval along-strike rocks in India suggests that there is no evidence of diachroneity in early stages of the orogen's exhumation.",

keywords = "Himalayas, foreland basin, Nepal, fission tracks, detrital zircons, provenance",

author = "Y. Najman and Andy Carter and P. Decelles and Grahame Oliver",

note = "I conceived the idea, devised and steered the project, provided the funding, led the interpretations and wrote the paper. Co-authors provided analyses. This paper was the first to provide evidence of early Himalayan erosion in the eastern Himalaya, thus advancing models of orogenesis and crustal deformation. RAE_import_type : Journal article RAE_uoa_type : Earth Systems and Environmental Sciences",

year = "2005",

month = apr,

day = "1",

doi = "10.1130/G21161.1;",

language = "English",

volume = "33",

pages = "309--312",

journal = "Geology",

issn = "1943-2682",

publisher = "Geological Society of America",

number = "4",

}

RIS

TY - JOUR

T1 - Provenance of early foreland basin sediments, Nepal: constraints to the timing and diachroneity of early Himalayan orogenesis.

AU - Najman, Y.

AU - Carter, Andy

AU - Decelles, P.

AU - Oliver, Grahame

N1 - I conceived the idea, devised and steered the project, provided the funding, led the interpretations and wrote the paper. Co-authors provided analyses. This paper was the first to provide evidence of early Himalayan erosion in the eastern Himalaya, thus advancing models of orogenesis and crustal deformation. RAE_import_type : Journal article RAE_uoa_type : Earth Systems and Environmental Sciences

PY - 2005/4/1

Y1 - 2005/4/1

N2 - In contrast to Eocene Himalayan foreland basin sedimentary deposits in India and Pakistan, coeval sedimentary rocks of the Bhainskati Formation in Nepal contain scant petrographic evidence of orogenic input. Such data have been used as evidence to promote models of diachroneity of India-Asia collision. In this paper we document orogenic input into the Eocene foreland basin rocks of Nepal, from fission-track analyses of detrital zircons. Our data provide evidence that significantly reduces the possible duration of any diachroneity of collision, and brings the interpretation of the sedimentary record into better agreement with ages of early thrusting and metamorphism in the orogen. We also use our detrital fission-track data to bolster previous age determinations of the overlying Dumri Formation, confirming the basin-wide occurrence of a major unconformity. Comparison of our data set with that from coeval along-strike rocks in India suggests that there is no evidence of diachroneity in early stages of the orogen's exhumation.

AB - In contrast to Eocene Himalayan foreland basin sedimentary deposits in India and Pakistan, coeval sedimentary rocks of the Bhainskati Formation in Nepal contain scant petrographic evidence of orogenic input. Such data have been used as evidence to promote models of diachroneity of India-Asia collision. In this paper we document orogenic input into the Eocene foreland basin rocks of Nepal, from fission-track analyses of detrital zircons. Our data provide evidence that significantly reduces the possible duration of any diachroneity of collision, and brings the interpretation of the sedimentary record into better agreement with ages of early thrusting and metamorphism in the orogen. We also use our detrital fission-track data to bolster previous age determinations of the overlying Dumri Formation, confirming the basin-wide occurrence of a major unconformity. Comparison of our data set with that from coeval along-strike rocks in India suggests that there is no evidence of diachroneity in early stages of the orogen's exhumation.

KW - Himalayas

KW - foreland basin

KW - Nepal

KW - fission tracks

KW - detrital zircons

KW - provenance

U2 - 10.1130/G21161.1;

DO - 10.1130/G21161.1;

M3 - Journal article

VL - 33

SP - 309

EP - 312

JO - Geology

JF - Geology

SN - 1943-2682

IS - 4

ER -

Research

Links

Text available via DOI:

Keywords