Levy, Richard H; Cody, Rosemary; Crampton, James; Fielding, Christopher R; Golledge, Nicholas R; Harwood, David M; Henrys, Stuart A; McKay, Robert M; Naish, Timothy R; Ohneiser, Christian; Wilson, Gary S; Wilson, Terry; Winter, Diane M (2012): (Table 1) Diatom events for AND1-1B, CIROS-2, DVDP-10, and DVDP-11 cores including observed and placed depths [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.815841, Supplement to: Levy, RH et al. (2012): Late Neogene climate and glacial history of the Southern Victoria Land coast from integrated drill core, seismic and outcrop data. Global and Planetary Change, 80-81, 61-84, https://doi.org/10.1016/j.gloplacha.2011.10.002
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Abstract:
Late Neogene stratigraphy of southern Victoria Land Basin is revealed in coastal and offshore drill cores and a network of seismic data in McMurdo Sound, Antarctica. These data preserve a record of ice sheet response to global climate variability and progressive cooling through the past 5 million years. Application of a composite standard age model for diatom event stratigraphy to the McMurdo Sound drill cores provides an internally precise mechanism to correlate stratigraphic data and derive an event history for the basin. These marine records are indirectly compared to data obtained from geological outcrop in the Transantarctic Mountains to produce an integrated history of Antarctic Ice Sheet response to climate variability from the early Pliocene to Recent. Four distinct chronostratigraphic intervals reflect stages and steps in a transition from a relatively warm early Pliocene Antarctic coastal climate to modern cold polar conditions. Several of these stages and steps correlate with global events identified via geochemical proxy data recovered from deep ocean cores in mid to low latitudes. These correlations allow us to consider linkages between the high southern latitudes and tropical regions and establish a temporal framework to examine leads and lags in the climate system through the late Neogene and Quaternary. The relative influence of climate-tectonic feedbacks is discussed in light of glacial erosion and isostatic rebound that also influence the history along the Southern Victoria Land coastal margin.
Further details:
Cody, Rosemary; Levy, Richard H; Crampton, James; Naish, Timothy R; Wilson, Gary S; Harwood, David M (2012): Selection and stability of quantitative stratigraphic age models: Plio-Pleistocene glaciomarine sediments in the ANDRILL 1B drillcore, McMurdo Ice Shelf. Global and Planetary Change, 96-97, 143-156, https://doi.org/10.1016/j.gloplacha.2012.05.017
Project(s):
Coverage:
Median Latitude: -77.685367 * Median Longitude: 164.386379 * South-bound Latitude: -77.889440 * West-bound Longitude: 163.411195 * North-bound Latitude: -77.578612 * East-bound Longitude: 167.089320
Date/Time Start: 1974-10-29T00:00:00 * Date/Time End: 2006-12-26T00:00:00
Minimum DEPTH, sediment/rock: -0.55 m * Maximum DEPTH, sediment/rock: 840.64 m
Event(s):
AND1-1B (AND-1B) * Latitude: -77.889440 * Longitude: 167.089320 * Date/Time Start: 2006-10-31T00:00:00 * Date/Time End: 2006-12-26T00:00:00 * Elevation: -917.0 m * Recovery: 1284.85 m * Campaign: MIS (McMurdo Ice Shelf) * Basis: McMurdo Station * Method/Device: Drilling/drill rig (DRILL) * Comment: Drilled through shelf ice, thickness of ice ~82 m
CIROS-2 * Latitude: -77.683333 * Longitude: 163.533333 * Elevation: -211.0 m * Location: McMurdo Sound * Campaign: CIROS * Basis: Sampling/drilling ice * Method/Device: Drilling/drill rig (DRILL)
DVDP-10 * Latitude: -77.578612 * Longitude: 163.511667 * Date/Time Start: 1974-10-29T00:00:00 * Date/Time End: 1974-11-12T00:00:00 * Elevation: -2.8 m * Penetration: 185.9 m * Recovery: 206 m * Location: New Harbor * Campaign: DVDP * Basis: Sampling on land * Method/Device: Drilling/drill rig (DRILL)
Comment:
Age data are based on linear interpolation of the composite sequence produced in the CONOP hybrid age model v. 4.14. (Cody et al. 2012). Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Ageprofile Datum Description | Ageprof dat des | Levy, Richard H | HO = highest occurrence, LO = lowest occurrence | ||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Depth, reference | Depth ref | m | Levy, Richard H | placed depth | |
| 7 | Ageprofile Datum Type | Ageprof dat typ | Levy, Richard H | First and Last Appearance Datum (FAD and LAD) | ||
| 8 | AGE | Age | ka BP | Geocode | ||
| 9 | Age, minimum/young | Age min | ka | Levy, Richard H | ||
| 10 | Age, maximum/old | Age max | ka | Levy, Richard H |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
936 data points