TY - JOUR
T1 - Foreland basin unconformity, Western Himalaya, Pakistan
T2 - timing gap, regional correlation and tectonic implications
AU - Qasim, Muhammad
AU - Rehman, Zia Ur
AU - Ding, Lin
AU - Tanoli, Javed Iqbal
AU - Abbas, Wahid
AU - Jamil, Muhammad
AU - Bhatti, Zahid Imran
AU - Umar, Muhammad
N1 - Publisher Copyright:
© 2023, Japan Geoscience Union.
PY - 2023/12
Y1 - 2023/12
N2 - This study estimates the timing of unconformity between marine–continental transitional sequence of the Kuldana Formation and continental sequence of the Murree Formation for the first time across the Hazara-Kashmir syntaxis, western Himalaya, Pakistan. The ages of the studied units are constrained using detrital zircon U–Pb geochronology. The maximum depositional ages constrained by weighted mean and youngest detrital zircon age are 37 ± 1.7 Ma and 22.5 ± 0.6 Ma for top of Kuldana and base of Murree formations, respectively. Based on this age, the duration of hiatus is estimated to be ~ 14.5 Ma. The comparison of this unconformity and sedimentation pattern along strike suggests that the initial collision occurred in the central segment causing its early uplift and erosion with development of the unconformity. The sedimentation in the central segment culminated at ~ 37 Ma and resumed at ~ 22.5 Ma. The wider gap in central segment becomes narrower at western and eastern margin suggesting discontinuous deposition due to gradually closure of western and eastern margin. This supports the diachronous collision of the Indian and Asian plates with initial contact at the central segment. [Figure not available: see fulltext.].
AB - This study estimates the timing of unconformity between marine–continental transitional sequence of the Kuldana Formation and continental sequence of the Murree Formation for the first time across the Hazara-Kashmir syntaxis, western Himalaya, Pakistan. The ages of the studied units are constrained using detrital zircon U–Pb geochronology. The maximum depositional ages constrained by weighted mean and youngest detrital zircon age are 37 ± 1.7 Ma and 22.5 ± 0.6 Ma for top of Kuldana and base of Murree formations, respectively. Based on this age, the duration of hiatus is estimated to be ~ 14.5 Ma. The comparison of this unconformity and sedimentation pattern along strike suggests that the initial collision occurred in the central segment causing its early uplift and erosion with development of the unconformity. The sedimentation in the central segment culminated at ~ 37 Ma and resumed at ~ 22.5 Ma. The wider gap in central segment becomes narrower at western and eastern margin suggesting discontinuous deposition due to gradually closure of western and eastern margin. This supports the diachronous collision of the Indian and Asian plates with initial contact at the central segment. [Figure not available: see fulltext.].
KW - Depositional ages
KW - India–Asia collision
KW - Marine–continental sequence
KW - Unconformity period
KW - Western Himalaya
UR - http://www.scopus.com/inward/record.url?scp=85168686037&partnerID=8YFLogxK
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UR - https://www.mendeley.com/catalogue/884effca-e9fa-3a12-955c-537b828505b2/
U2 - 10.1186/s40645-023-00584-w
DO - 10.1186/s40645-023-00584-w
M3 - Article
AN - SCOPUS:85168686037
SN - 2197-4284
VL - 10
JO - Progress in Earth and Planetary Science
JF - Progress in Earth and Planetary Science
IS - 1
M1 - 51
ER -