Cremer, Michel; Legigan, Philippe (1989): Morphology and surface texture of quartz grains from ODP Site 105-645 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.744805, Supplement to: Cremer, M; Legigan, P (1989): Morphology and surface texture of quartz grains from ODP Site 645, Baffin Bay. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 21-30, https://doi.org/10.2973/odp.proc.sr.105.112.1989
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Abstract:
The shapes and surface textures of sand-sized quartz grains from the sediments cored at Site 645 in southern Baffin Bay during ODP Leg 105 were studied to characterize the terrigenous materials and the settling processes involved in the deposition of these sediments. Here, we show a homogeneous sand fraction that results from mixing grains from various provenances. The characteristics inherited from terrestrial processes (varying degrees of wear; fluviatile, aeolian, and diagenetic features) dominate the characteristics that result from evolution in a high-energy marine environment. Thus, the influence of the last stage of sedimentation in a deep-marine environment was difficult to distinguish. However, fluctuations in the relative proportions of particular features reveal that the terrigenous material derived from sedimentary formations of Baffin Island and East Greenland or from direct abrasion of the crystalline shield, which changed through time as the dominant settling processes evolved. In particular, this study confirms the onset of major ice rafting as old as late Miocene.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 70.457482 * Median Longitude: -64.655087 * South-bound Latitude: 70.457200 * West-bound Longitude: -64.656200 * North-bound Latitude: 70.458000 * East-bound Longitude: -64.654300
Date/Time Start: 1985-09-03T00:00:00 * Date/Time End: 1985-09-28T00:00:00
Event(s):
105-645 * Latitude: 70.457550 * Longitude: -64.654800 * Date/Time Start: 1985-09-03T00:00:00 * Date/Time End: 1985-09-28T00:00:00 * Elevation: -2018.1 m * Penetration: 1980 m * Recovery: 850.8 m * Location: Baffin Bay * Campaign: Leg105 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 139 cores; 1276.8 m cored; 0 m drilled; 66.6% recovery
105-645B * Latitude: 70.457200 * Longitude: -64.654300 * Date/Time Start: 1985-09-05T13:25:00 * Date/Time End: 1985-09-10T01:25:00 * Elevation: -2019.0 m * Penetration: 298.9 m * Recovery: 171.68 m * Location: Baffin Bay * Campaign: Leg105 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 298.3 m cored; 0 m drilled; 57.6 % recovery
105-645D * Latitude: 70.457200 * Longitude: -64.656200 * Date/Time Start: 1985-09-10T12:00:00 * Date/Time End: 1985-09-13T17:00:00 * Elevation: -2018.0 m * Penetration: 465.8 m * Recovery: 106.84 m * Location: Baffin Bay * Campaign: Leg105 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 190.4 m cored; 0 m drilled; 56.1 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Cremer, M; Legigan, P (1989): (Table 1) Grain size distribution and various types of quartz grains in ODP Site 105-645. https://doi.org/10.1594/PANGAEA.744803
- Cremer, M; Legigan, P (1989): (Table 2) Association of quartz-grain surface features in selected samples from ODP Site 105-645B ODP Site 105-645. https://doi.org/10.1594/PANGAEA.744804