Clement, Bradford M; Robinson, Frank (1987): Magnetostratigraphy of DSDP Leg 94 sediments. PANGAEA, https://doi.org/10.1594/PANGAEA.788554, Supplement to: Clement, BM; Robinson, F (1987): The magnetostratigraphy of Leg 94 sediments. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 635-650, https://doi.org/10.2973/dsdp.proc.94.112.1987
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The primary objective of DSDP Leg 94 was to obtain continuous paleoclimatic records along a roughly north-south transect in the North Atlantic. The magnetostratigraphy of 21 holes at 6 sites cored with the hydraulic piston corer and extended-core-barrel corer is presented here and establishes an independent chronology for these sediments. Nearly complete records were obtained for the last 2.5 m.y.; in addition, deeper drilling at three sites to satisfy tectonic and paleoceanographic objectives produced older sections suitable for magnetostratigraphic study, allowing first-order correlations of the polarity sequences with calcareous and siliceous micro fossil events.
The sections with high sediment accumulation rates yielded very detailed records of polarity history and allowed three short normal-polarity zones within the Matuyama Chronozone to be detected, in addition to the Jaramillo and Olduvai subchronozones. A short reversed-polarity zone also occurs, within the upper intervals of the Gauss Chronozone. These short zones are present in multiple holes, ruling out the possibility that they might be of local origin. Correlation of these short zones with radiometrically dated polarity zones in igneous rocks strongly supports the interpretation of these polarity zones as records of true geomagnetic polarity chrons.
Median Latitude: 48.776085 * Median Longitude: -26.034910 * South-bound Latitude: 37.338200 * West-bound Longitude: -35.500300 * North-bound Latitude: 53.224500 * East-bound Longitude: -18.886800
Date/Time Start: 1983-07-02T00:00:00 * Date/Time End: 1983-08-06T00:00:00
Minimum DEPTH, sediment/rock: 16.54 m * Maximum DEPTH, sediment/rock: 916.55 m
94-606 * Latitude: 37.338700 * Longitude: -35.499800 * Date/Time: 1983-07-02T00:00:00 * Elevation: -3007.0 m * Penetration: 165.7 m * Recovery: 154.1 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 18 cores; 165.7 m cored; 0 m drilled; 93 % recovery
94-606A * Latitude: 37.338200 * Longitude: -35.500300 * Date/Time: 1983-07-02T00:00:00 * Elevation: -3007.0 m * Penetration: 178.4 m * Recovery: 156.3 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 178.4 m cored; 0 m drilled; 87.6 % recovery
94-607 * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 284.4 m * Recovery: 248.6 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 284.4 m cored; 0 m drilled; 87.4 % recovery
|#||Name||Short Name||Unit||Principal Investigator||Method||Comment|
|2||Elevation of event||Elevation||m|
|3||Latitude of event||Latitude|
|4||Longitude of event||Longitude|
|5||Sample code/label||Sample label||Clement, Bradford M||ODP sample designation|
|6||Sample code/label 2||Sample label 2||Clement, Bradford M||ODP sample designation|
|7||Ageprofile Datum Description||Ageprof dat des||Clement, Bradford M|
|8||Depth, top/min||Depth top||m||Clement, Bradford M|
|9||Depth, bottom/max||Depth bot||m||Clement, Bradford M|
|10||DEPTH, sediment/rock||Depth||m||Geocode – mbsf|
|11||Age model||Age model||ka||Clement, Bradford M|
1333 data points