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Hurst, Stephen D. (1999): Structural features and paleomagnetism in holes 917A and 990A
Leg/Site/Hole:
Related Expeditions:
ODP 152
ODP 163
ODP 152 917
ODP 163 990
Identifier:
ID:
2000-063783
Type:
georefid
ID:
10.2973/odp.proc.sr.163.124.1999
Type:
doi
Creator:
Name:
Hurst, Stephen D.
Affiliation:
University of Illinois at Urbana-Champaign, Department of Geology, Urbana, IL, United States
Role:
author
Identification:
Title:
Structural features and paleomagnetism in holes 917A and 990A
Year:
1999
Source:
In: Larsen, Hans-Christian, Duncan, Robert A., Allan, James F., Aita, Yoshiaki, Arndt, Nicholas T., Buecker, Christian J., Cambray, Herve, Cashman, Katharine V., Cerney, Brian P., Clift, Peter D., Fitton, J. Godfrey, Le Gall, Bernard, Hooper, Peter R., Hurst, Stephen D., Krissek, Lawrence A., Kudless, Kristen E., Larsen, Lotte Melchior, Lesher, Charles E., Nakasa, Yukari, Niu, Yaoling, Philipp, Harald, Planke, Sverre, Rehacek, Jakub, Saunders, Andrew D., Teagle, Damon A. H., Tegner, Christian, Scroggs, John (editor), Proceedings of the Ocean Drilling Program; scientific results, Southeast Greenland margin; covering Leg 163 of the cruises of the drilling vessel JOIDES Resolution, Reykjavik, Iceland, to Halifax, Nova Scotia, sites 988-990, 3 September-7 October 1995
Publisher:
Texas A & M University, Ocean Drilling Program, College Station, TX, United States
Volume:
163
Issue:
Pages:
37-40
Abstract:
During Ocean Drilling Program Legs 152 and 163, we recovered core from the offshore East Greenland volcanic province. The basaltic core recovered included a set of structural elements reflecting the history of extrusion, cooling, postdeposition alteration, and minor tectonism. Brittle features in the basaltic core include faults and several generations of veins. Several minicore samples from the lower sections of core from Hole 917A were taken for paleomagnetic analysis, primarily to test whether there were any significant postdepositional tectonic rotations or whether the core could be reoriented using paleomagnetic techniques. The characteristic magnetization direction was used to estimate the in situ orientation of measured structural features within the core. Although significant uncertainty is associated with the analysis, the corrected attitudes of veins in basalt at Site 917 dip moderately west, with a smaller, conjugate group of veins dipping moderately east-southeast, parallel to other seaward-dipping faults in the area, which were interpreted from seismic lines.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage:
Geographic coordinates:
North:63.2930
West:-39.4939
East: -39.4648
South:63.2822
Keywords:
Solid-earth geophysics; alternating field demagnetization; Arctic region; Atlantic Ocean; basalts; characteristic remanent magnetization; continental margin; cores; demagnetization; East Greenland; Greenland; igneous rocks; Leg 152; Leg 163; magnetic declination; magnetization; North Atlantic; Ocean Drilling Program; ODP Site 917; ODP Site 990; paleomagnetism; remanent magnetization; secular variations; veins; volcanic rocks;
.
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