Research output: Contribution to journal › Article › peer-review
Thermochronological insights into the structural contact between the Tian Shan and Pamirs, Tajikistan. / Jepson, Gilby; Glorie, Stijn; Konopelko, Dmitry et al.
In: Terra Nova, Vol. 30, No. 2, 01.04.2018, p. 95-104.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermochronological insights into the structural contact between the Tian Shan and Pamirs, Tajikistan
AU - Jepson, Gilby
AU - Glorie, Stijn
AU - Konopelko, Dmitry
AU - Gillespie, Jack
AU - Danišík, Martin
AU - Evans, Noreen J.
AU - Mamadjanov, Yunus
AU - Collins, Alan S.
N1 - Publisher Copyright: © 2017 John Wiley & Sons Ltd
PY - 2018/4/1
Y1 - 2018/4/1
N2 - Multi-method thermochronology along the Vakhsh-Surkhob fault zone reveals the thermotectonic history of the South Tian Shan–Pamirs boundary. Apatite U/Pb analyses yield a consistent age of 251 ± 2 Ma, corresponding to cooling below ~550–350°C, related to the final closure of the Palaeo-Asian Ocean and contemporaneous magmatism in the South Tian Shan. Zircon (U–Th–Sm)/He ages constrain cooling below ~180°C to the end of the Triassic (~200 Ma), likely related either to deformation induced by the Qiangtang collision or to the closure of the Rushan Ocean. Apatite fission track thermochronology reveals two low-temperature (<120°C) thermal events at ~25 Ma and ~10 Ma, which may be correlated with tectonic activity at the distant southern Eurasian margin. The late Miocene cooling is confirmed by apatite (U–Th–Sm)/He data and marks the onset of mountain building within the South Tian Shan that is ongoing today.
AB - Multi-method thermochronology along the Vakhsh-Surkhob fault zone reveals the thermotectonic history of the South Tian Shan–Pamirs boundary. Apatite U/Pb analyses yield a consistent age of 251 ± 2 Ma, corresponding to cooling below ~550–350°C, related to the final closure of the Palaeo-Asian Ocean and contemporaneous magmatism in the South Tian Shan. Zircon (U–Th–Sm)/He ages constrain cooling below ~180°C to the end of the Triassic (~200 Ma), likely related either to deformation induced by the Qiangtang collision or to the closure of the Rushan Ocean. Apatite fission track thermochronology reveals two low-temperature (<120°C) thermal events at ~25 Ma and ~10 Ma, which may be correlated with tectonic activity at the distant southern Eurasian margin. The late Miocene cooling is confirmed by apatite (U–Th–Sm)/He data and marks the onset of mountain building within the South Tian Shan that is ongoing today.
KW - FISSION-TRACK THERMOCHRONOLOGY
KW - SOUTHERN TIEN-SHAN
KW - (U-TH)/HE THERMOCHRONOMETRY
KW - CENOZOIC DEFORMATION
KW - TECTONIC EVOLUTION
KW - EXHUMATION HISTORY
KW - CENTRAL-ASIA
KW - APATITE
KW - ZIRCON
KW - AGE
UR - http://www.scopus.com/inward/record.url?scp=85043373696&partnerID=8YFLogxK
U2 - 10.1111/ter.12313
DO - 10.1111/ter.12313
M3 - Article
AN - SCOPUS:85043373696
VL - 30
SP - 95
EP - 104
JO - Terra Nova
JF - Terra Nova
SN - 0954-4879
IS - 2
ER -
ID: 12079089