(Table 1) Depth-age points used for initial chronology and adjusted ages of ODP Site 162-982 ...

Ocean Drilling Program (ODP) Site 982 in the North Atlantic contains a complete latest Miocene to early Pliocene section that was tuned to the astronomical timescale by correlating the record of gamma ray attenuation (GRA) bulk density to summer insolation at 65°N and the benthic d18O signal to orbi...

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Bibliographic Details
Main Authors: Hodell, David A, Curtis, Jason H, Sierro, Francisco Javier, Raymo, Maureen E
Format: Dataset
Language:English
Published: PANGAEA 2001
Subjects:
Datum level
DEPTH, sediment/rock
Age model
Age model, optional
Composite Core
Leg162
Joides Resolution
Ocean Drilling Program ODP
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.847765
https://doi.pangaea.de/10.1594/PANGAEA.847765
Description
Summary:Ocean Drilling Program (ODP) Site 982 in the North Atlantic contains a complete latest Miocene to early Pliocene section that was tuned to the astronomical timescale by correlating the record of gamma ray attenuation (GRA) bulk density to summer insolation at 65°N and the benthic d18O signal to orbital obliquity for the interval from 4.6 to 7.5 Ma. The astronomical tuning of the Site 982 record permits a direct bed-to-bed correlation to the cyclostratigraphy of Messinian sections in the Mediterranean (Krijgsman et al., 1999a, doi:10.1038/23231, 2001, doi:10.1016/S0037-0738(00)00171-8). The benthic d18O signal at Site 982 records a latest Miocene glacial period that lasted from ~6.26 to 5.50 Ma and consisted of 18 glacial-to-interglacial oscillations that were controlled by the 41-kyr cycle of obliquity. Although the intensification of glaciation at 6.26 Ma may have contributed to the restriction of the Mediterranean, it preceded the depositional onset of the lower evaporite unit at 5.96 Ma by some 300 kyr. ... : Marine isotope stages (MIS) designations follow Shackleton et al. (1995b, doi:10.2973/odp.proc.sr.138.117.1995). The ages for TG20 and TG12 were derived from Site 926 (Shackleton and Crowhurst, 1997, doi:10.2973/odp.proc.sr.154.102.1997), whereas all others were taken from Site 846 (Shackleton et al., 1995b, doi:10.2973/odp.proc.sr.138.117.1995) and adjusted by adding4 1 kyr correspondingto one obliquity cycle. Foraminiferal events are described by Sierro et al. (1993, doi:10.1016/0377-8398(93)90013-N), and the astronomical ages were derived from Hilgen et al. (1995, doi:10.1016/0012-821X(95)00207-S). ...

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