Citation:

odp.proc.sr.163.118.1999

Name: (Table 1) Grain size, sedimentation rates and accumulation rates of ODP Hole 152-919A coarse-sand ice-rafted debris
Creator: Lawrence A Krissek
Published: 1999
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

At mid- to high-latitude marine sites, ice-rafted debris (IRD) is commonly recognized as anomalously coarse-grained terrigenous material contained within a fine-grained hemipelagic or pelagic matrix (e.g., Conolly and Ewing, 1970; Ruddiman, 1977, doi:10.1130/0016-7606(1977)88<1813:LQDOIS>2.0.CO;2; Krissek, 1989, doi:10.2973/odp.proc.sr.104.114.1989; Jansen et al., 1990; Bond et al., doi:10.1038/360245a0, 1992; Krissek, 1995, doi:10.2973/odp.proc.sr.145.118.1995). The presence of such ice-rafted material is a valuable indicator of the presence of glacial ice at sea level on an adjacent continent, whereas the composition of the IRD can often be used to identify the location of the source area (e.g., Goldschmidt, 1995, doi:10.1016/0025-3227(95)00098-J).

Because the amount of core recovered during Leg 163 was very limited, this shore-based, postcruise study focuses on materials recovered at a nearby site during Leg 152. In particular, this study examines sediments recovered at Site 919; these sediments were described as containing a significant ice-rafted component in the Leg 152 Initial Reports volume (Larsen, Saunders, Clift, et al., 1994, doi:10.2973/odp.proc.ir.152.1994). In this study, the sedimentary section from Site 919 has been examined with the goal of providing a detailed history of glaciations on Greenland and other landmasses adjacent to the Norwegian-Greenland Sea; this history ultimately will be calibrated using an oxygen isotope stratigraphy (Flower, 1998, doi:10.2973/odp.proc.sr.152.219.1998), although that calibration has not been completed at this time. Because ice-core studies of the Greenland Ice Sheet (GIS) have shown that the GIS changed dramatically, and in some cases extremely rapidly, during at least the last interglacial stage (GRIP Members, 1993, doi:10.1038/364203a0), a detailed IRD record from the Southeast Greenland margin should provide insight into the longer term behavior of this sensitive component of the Northern Hemisphere climate system.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: 62.670000 * Longitude: -37.460200

Date/Time Start: 1993-11-13T09:14:00 * Date/Time End: 1993-11-14T05:45:00

Minimum DEPTH, sediment/rock: 0.55 m * Maximum DEPTH, sediment/rock: 146.95 m

Event(s):

152-919A * Latitude: 62.670000 * Longitude: -37.460200 * Date/Time Start: 1993-11-13T09:14:00 * Date/Time End: 1993-11-14T05:45:00 * Elevation: -2088.0 m * Penetration: 93.5 m * Recovery: 93.59 m * Location: Greenland Sea * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 93.5 m cored; 0 m drilled; 100.1 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Krissek, Lawrence A	DSDP/ODP/IODP sample designation
2	DEPTH, sediment/rock	Depth sed	m	Krissek, Lawrence A		Geocode
3	AGE	Age	ka BP	Krissek, Lawrence A		Geocode
4	Size fraction 2.000-0.250 mm	2000-250 µm	%	Krissek, Lawrence A		coarse sand
5	Terrigenous	Terr	%	Krissek, Lawrence A		of total coarse sand fraction
6	Sedimentation rate	SR	cm/ka	Krissek, Lawrence A
7	Density, dry bulk	DBD	g/cm³	Krissek, Lawrence A
8	Accumulation rate, ice rafted debris	Acc rate IRD	g/cm²/ka	Krissek, Lawrence A
9	Quartz	Qz	%	Krissek, Lawrence A		of terrigenous coarse sand
10	Accumulation rate, quartz	Acc rat Qz	g/cm²/ka	Krissek, Lawrence A
11	Basalt	Basalt	%	Krissek, Lawrence A		of terrigenous coarse sand
12	Accumulation rate, basalt fragments	Acc rate basalt	g/cm²/ka	Krissek, Lawrence A
13	Granite	Gran	%	Krissek, Lawrence A		of terrigenous coarse sand
14	Accumulation rate granite fragments	Acc rate granite	g/cm²/ka	Krissek, Lawrence A
15	Rock fragments	Rock fragm	%	Krissek, Lawrence A		coarse grained basic in terrigenous coarse sand
16	Accumulation rate, rock fragments	Acc rate rock fragm	g/cm²/ka	Krissek, Lawrence A		coarse grained basic in terrigenous coarse sand
17	Rock fragments	Rock fragm	%	Krissek, Lawrence A		sedimentary rock fragment in terrigenous coarse sand
18	Accumulation rate, rock fragments	Acc rate rock fragm	g/cm²/ka	Krissek, Lawrence A		sedimentary rock fragment in terrigenous coarse sand
19	Rock fragments	Rock fragm	%	Krissek, Lawrence A		carbonate rock fragment in terrigenous coarse sand
20	Accumulation rate, rock fragments	Acc rate rock fragm	g/cm²/ka	Krissek, Lawrence A		carbonate rock fragment in terrigenous coarse sand

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

5129 data points

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