Research output: Contribution to journal › Article › peer-review
230 Th/U and 14 C dating of mollusc shells from the coasts of the Caspian, Barents, White and black seas. / Arslanov, Kh A.; Tertychny, N. I.; Kuznetsov, V. Yu; Chernov, S. B.; Lokshin, N. V.; Gerasimova, S. A.; Maksimov, F. E.; Dodonov, A. E.
In: Geochronometria, Vol. 21, 2002, p. 49-56.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - 230 Th/U and 14 C dating of mollusc shells from the coasts of the Caspian, Barents, White and black seas
AU - Arslanov, Kh A.
AU - Tertychny, N. I.
AU - Kuznetsov, V. Yu
AU - Chernov, S. B.
AU - Lokshin, N. V.
AU - Gerasimova, S. A.
AU - Maksimov, F. E.
AU - Dodonov, A. E.
N1 - Publisher Copyright: © 2002 Walter de Gruyter GmbH. All rights reserved.
PY - 2002
Y1 - 2002
N2 - We dated Holocene and Late Pleistocene mollusc shells collected from coastal sediments of the Caspian, Barents, White and Black Seas by means of both a modified 230 Th/U method and the radiocarbon method. Essence of the modification is the removal of the surface (about 1/3 of the weight) of the mollusc shells by nitric acid as it may contain adsorbed detrital 232 Th and 230 Th. The 230 Th/U dates of the inner part of the shells do not require detrital correction with the 232 Th activity and well agree with the corresponding reservoir-corrected and calibrated 14 C ages of mollusc shells with ages between 1300 and 13,500 BP. We tested the modified 230 Th/U method on thick-walled and well-preserved mollusc shells from the transgression sediments of the Barentz, White and Black Seas derived during the Mikulino Interglacial (MIS 5e) and the Early Valday Glaciation (MIS 5c). The 230 Th/U ages of the inner part of the shells from the Boreal (Eem) transgression sediments of the Barentz and White Seas ranged from 86 to 114 ka and those from the Karangat (Eem) transgression in the Black Sea (Maly Kut and Eltigen sections) from 95 to 115 ka. The new 230 Th/U dates of the shells from the section Eltigen ranged from 100 to 125 ka..
AB - We dated Holocene and Late Pleistocene mollusc shells collected from coastal sediments of the Caspian, Barents, White and Black Seas by means of both a modified 230 Th/U method and the radiocarbon method. Essence of the modification is the removal of the surface (about 1/3 of the weight) of the mollusc shells by nitric acid as it may contain adsorbed detrital 232 Th and 230 Th. The 230 Th/U dates of the inner part of the shells do not require detrital correction with the 232 Th activity and well agree with the corresponding reservoir-corrected and calibrated 14 C ages of mollusc shells with ages between 1300 and 13,500 BP. We tested the modified 230 Th/U method on thick-walled and well-preserved mollusc shells from the transgression sediments of the Barentz, White and Black Seas derived during the Mikulino Interglacial (MIS 5e) and the Early Valday Glaciation (MIS 5c). The 230 Th/U ages of the inner part of the shells from the Boreal (Eem) transgression sediments of the Barentz and White Seas ranged from 86 to 114 ka and those from the Karangat (Eem) transgression in the Black Sea (Maly Kut and Eltigen sections) from 95 to 115 ka. The new 230 Th/U dates of the shells from the section Eltigen ranged from 100 to 125 ka..
KW - Geochronology
KW - Mollusc Shells
KW - Radiocarbon Dating
KW - Transgression
KW - Uranium-Thorium Dating
UR - http://www.scopus.com/inward/record.url?scp=33644643230&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33644643230
VL - 21
SP - 49
EP - 56
JO - Geochronometria
JF - Geochronometria
SN - 1733-8387
ER -
ID: 89241971