Research output: Contribution to journal › Article › peer-review
Detrital zircon (U-Th)/He ages from Paleozoic strata of the Severnaya Zemlya Archipelago : Deciphering multiple episodes of Paleozoic tectonic evolution within the Russian High Arctic. / Ershova, Victoria; Anfinson, Owen; Prokopiev, Andrei; Khudoley, Andrei; Stockli, Daniel; Faleide, Jan Inge; Gaina, Carmen; Malyshev, Nikolay.
In: Journal of Geodynamics, Vol. 119, 01.09.2018, p. 210-220.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Detrital zircon (U-Th)/He ages from Paleozoic strata of the Severnaya Zemlya Archipelago
T2 - Deciphering multiple episodes of Paleozoic tectonic evolution within the Russian High Arctic
AU - Ershova, Victoria
AU - Anfinson, Owen
AU - Prokopiev, Andrei
AU - Khudoley, Andrei
AU - Stockli, Daniel
AU - Faleide, Jan Inge
AU - Gaina, Carmen
AU - Malyshev, Nikolay
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Combined (U-Th)/He and U-Pb detrital zircon geochronological data are reported from Ordovician to Devonian strata of the Severnaya Zemlya archipelago to address the paleogeography of the Kara Terrane in the Russian High Arctic. (U-Th)/He ages from all six samples analyzed were not reset after sediment deposition, indicating that detrital zircons carry information on the exhumation history in the source region of the clastic material. In Ordovician-Silurian strata, (U-Th)/He ages range from 583.8 ± 46.7 to 429.0 ± 34.3 Ma. These ages nicely coincide with significant regional exhumation during the Caledonian and Timanian orogenies. In addition, combined U-Pb and (U-Th)/He dating show that within the source region, zircons that were crystalized during the Timanian Orogeny (U-Pb ages 680–560 Ma) were likely exhumed during younger Caledonian events ((U-Th)/He ages of 455–495 Ma), suggesting potential overlap of these orogens within the source region. In Devonian strata, detrital zircon (U-Th)/He ages range from 517.2 ± 41.38 to 332.9 ± 26.6 Ma, with a peak age of ca. 375 Ma. This 375 Ma event may be correlated with either the Ellesmerian Orogeny or the terminal Solundian/Svalbardian stages of the Caledonian Orogeny.
AB - Combined (U-Th)/He and U-Pb detrital zircon geochronological data are reported from Ordovician to Devonian strata of the Severnaya Zemlya archipelago to address the paleogeography of the Kara Terrane in the Russian High Arctic. (U-Th)/He ages from all six samples analyzed were not reset after sediment deposition, indicating that detrital zircons carry information on the exhumation history in the source region of the clastic material. In Ordovician-Silurian strata, (U-Th)/He ages range from 583.8 ± 46.7 to 429.0 ± 34.3 Ma. These ages nicely coincide with significant regional exhumation during the Caledonian and Timanian orogenies. In addition, combined U-Pb and (U-Th)/He dating show that within the source region, zircons that were crystalized during the Timanian Orogeny (U-Pb ages 680–560 Ma) were likely exhumed during younger Caledonian events ((U-Th)/He ages of 455–495 Ma), suggesting potential overlap of these orogens within the source region. In Devonian strata, detrital zircon (U-Th)/He ages range from 517.2 ± 41.38 to 332.9 ± 26.6 Ma, with a peak age of ca. 375 Ma. This 375 Ma event may be correlated with either the Ellesmerian Orogeny or the terminal Solundian/Svalbardian stages of the Caledonian Orogeny.
KW - Arctic
KW - Detrital zircon
KW - Exhumation history
KW - Kara sea
KW - Paleozoic paleogeography
KW - Thermochronology
UR - http://www.scopus.com/inward/record.url?scp=85044500140&partnerID=8YFLogxK
U2 - 10.1016/j.jog.2018.02.007
DO - 10.1016/j.jog.2018.02.007
M3 - Article
AN - SCOPUS:85044500140
VL - 119
SP - 210
EP - 220
JO - Journal of Geodynamics
JF - Journal of Geodynamics
SN - 0264-3707
ER -
ID: 39480303