Weedon, Graham P; Hall, Ian R (2002): (Table T3) Geochemical composition and age of ODP Site 181-1123 sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.786384, Supplement to: Weedon, GP; Hall, IR (2002): Data report: Inorganic geochemistry of Miocene to recent samples from Chatham Rise, southwest Pacific, Site 1123. In: Richter, C (ed.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 181, 1-10, https://doi.org/10.2973/odp.proc.sr.181.209.2002
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Abstract:
In 1998 Ocean Drilling Program Leg 181 off southwest New Zealand obtained cores from Site 1123 (41°47.2'S, 171°29.9'W; 3290 m water depth) on the Chatham Rise. Site 1123 sampled the North Chatham Sediment Drift, which is located between 169°W and 175°W at depths of 2200-4500 m (Carter, McCave, Richter, Carter, et al., 1999, doi:10.2973/odp.proc.ir.181.2000). This site is located just north of the productive surface waters associated with the Subtropical Front. The cores provide a relatively complete record of sedimentation on the Chatham Drift back to the early Miocene and beyond a stratigraphic gap into the early Oligocene. Drift sedimentation is partly indicated by modern paleoceanographic observations and by extensive microfossil reworking throughout the recovered sediment (Carter and McCave, 1994, doi:10.1029/94PA01444; Carter, McCave, Richter, Carter, et al., 1999, doi:10.2973/odp.proc.ir.181.2000).
Approximately 1000 sediment samples from the lower Oligocene, lower Miocene, middle Miocene, and upper Pleistocene have been analyzed geochemically for elemental concentrations. The stratigraphic intervals sampled at 5- to 10-cm intervals are listed in Table T1. The elemental concentrations, normalized by aluminium concentrations, provide proxies for factors such as nutrient levels, siliciclastic and volcaniclastic sediment composition, and bottom-water redox conditions. This approach was prompted by successes with Miocene and Oligocene deep-sea sediment elemental ratios obtained from the Ceara Rise in the western equatorial Atlantic (Weedon and Shackleton, 1997, doi:10.2973/odp.proc.sr.154.129.1997). The results for Ba/Al in the Pleistocene were discussed by Hall et al. (2001, doi:10.1038/35090552), and an interpretation of a selection of additional elemental ratios from all the stratigraphic intervals was provided by Weedon and Hall (2004, doi:10.1016/S0025-3227(04)00024-6). However, many components listed here, particularly the trace elements and rare earth elements, were not considered by Weedon and Hall (2004, doi:10.1016/S0025-3227(04)00024-6).
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: -41.786000 * Longitude: -171.499000
Date/Time Start: 1998-09-12T00:00:00 * Date/Time End: 1998-09-24T00:00:00
Minimum DEPTH, sediment/rock: 0.04 m * Maximum DEPTH, sediment/rock: 592.72 m
Event(s):
181-1123 * Latitude: -41.786000 * Longitude: -171.499000 * Date/Time Start: 1998-09-12T00:00:00 * Date/Time End: 1998-09-24T00:00:00 * Elevation: -3290.0 m * Penetration: 1279.9 m * Recovery: 899.5 m * Location: South Pacific Ocean * Campaign: Leg181 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 102 cores; 957 m cored; 322.9 m drilled; 94% recovery
Comment:
DEPTH, sediment is given in mbsf.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
33022 data points
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