Stratigraphy of Late Cenozoic sediments of the western Chukchi Sea: New results from shallow drilling and seismic-reflection profiling. / Gusev, E.A.; Andreeva, I.A.; Anikina, N.Y.; Bondarenko, S.A.; Derevyanko, L.G.; Iosifidi, A.G.; Klyuvitkina, T.S.; Litvinenko, I.V.; Petrova, V.I.; Polyakova, E.I.; Popov, V.V.; Stepanova, A.Y.
In: Global and Planetary Change, Vol. 68, No. 1-2, 2009, p. 115-131.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Stratigraphy of Late Cenozoic sediments of the western Chukchi Sea: New results from shallow drilling and seismic-reflection profiling
AU - Gusev, E.A.
AU - Andreeva, I.A.
AU - Anikina, N.Y.
AU - Bondarenko, S.A.
AU - Derevyanko, L.G.
AU - Iosifidi, A.G.
AU - Klyuvitkina, T.S.
AU - Litvinenko, I.V.
AU - Petrova, V.I.
AU - Polyakova, E.I.
AU - Popov, V.V.
AU - Stepanova, A.Y.
PY - 2009
Y1 - 2009
N2 - The Quaternary history of Beringia and of the Arctic–Pacific marine connection via the Bering Strait is poorly understood because of the fragmentary stratigraphic record from this region. We report new borehole and seismic-reflection data collected in 2006 in the southwestern Chukchi Sea. Sediment samples were analyzed for magnetic properties, grain size, heavy minerals, and biostratigraphic proxies (spores and pollen, foraminifers, ostracodes, diatoms, and aquatic palynomorphs). Two shallow boreholes drilled between the Chukotka Peninsula and the Wrangel Island recovered sediments of two principal stratigraphic units with a distinct unconformity between them. Based on predominantly reverse paleomagnetic polarity of the lower unit and pollen spectra indicative of forested coasts and climate warmer than present, the age of this unit is estimated as Pliocene to early Pleistocene (broadly between ca. 5 and 2 Ma). Attendant sedimentary environments were likely alluvial to nearshore marine. These deposits can be c
AB - The Quaternary history of Beringia and of the Arctic–Pacific marine connection via the Bering Strait is poorly understood because of the fragmentary stratigraphic record from this region. We report new borehole and seismic-reflection data collected in 2006 in the southwestern Chukchi Sea. Sediment samples were analyzed for magnetic properties, grain size, heavy minerals, and biostratigraphic proxies (spores and pollen, foraminifers, ostracodes, diatoms, and aquatic palynomorphs). Two shallow boreholes drilled between the Chukotka Peninsula and the Wrangel Island recovered sediments of two principal stratigraphic units with a distinct unconformity between them. Based on predominantly reverse paleomagnetic polarity of the lower unit and pollen spectra indicative of forested coasts and climate warmer than present, the age of this unit is estimated as Pliocene to early Pleistocene (broadly between ca. 5 and 2 Ma). Attendant sedimentary environments were likely alluvial to nearshore marine. These deposits can be c
KW - Chukchi Sea
KW - Beringia
KW - sediment stratigraphy
KW - seismic stratigraphy
KW - Pliocene
KW - Quaternary
U2 - 10.1016/j.gloplacha.2009.03.025
DO - 10.1016/j.gloplacha.2009.03.025
M3 - Article
VL - 68
SP - 115
EP - 131
JO - Global and Planetary Change
JF - Global and Planetary Change
SN - 0921-8181
IS - 1-2
ER -
ID: 5313914