Technical note: Late Pliocene age control and composite depths at ODP Site 982, revisited
Technical note: Late Pliocene age control and composite depths at ODP Site 982, revisited
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技术说明:ODP 982 站点上新世晚期的年龄控制和复合深度,重新审视
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
B. Naafs
中科院分区:
文献类型:
--
作者:
N. Khélifi;M. Sarnthein;B. Naafs
Ocean Drilling Program (ODP) Site 982 provided a key sediment section at Rockall Plateau for reconstructing northeast Atlantic paleoceanography and monitoring benthic δ18O stratigraphy over the late Pliocene to Quaternary onset of major Northern Hemisphere glaciation. A renewed hole-specific inspection of magnetostratigraphic reversals and the addition of epibenthic δ18O records for short Pliocene sections in holes 982A, B, and C, crossing core breaks in the δ18O record published for Hole 982B, now imply a major revision of composite core depths. After tuning to the orbitally tuned reference record LR04, the new composite δ18O record results in a hiatus, where the Kaena magnetic subchron might have been lost, and in a significant age reduction for all proxy records by 130 to 20 ky over the time span 3.2–2.7 million years ago (Ma). Our study demonstrates the general significance of reliable composite-depth scales and δ18O stratigraphies in ODP sediment records for generating ocean-wide correlations in paleoceanography. The new concept of age control makes the late Pliocene trends in SST (sea surface temperature) and atmospheric pCO2 at Site 982 more consistent with various paleoclimate trends published from elsewhere in the North Atlantic.
影响因子:
5.8
作者:
Khèlifi N;Sarnthein M;Andersen N;Blanz T;Frank M;Garbe-Schönberg D;Haley B.A;Stumpf R;Weinelt M.
通讯作者:
Weinelt M.
影响因子:
5.3
作者:
Naafs B.D;Stein R;Hefter J;Khèlifi N;De Schepper S;Haug G.H.
通讯作者:
Haug G.H.