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Article: Paleomagnetic results from basement rocks from Site 917 (East Greenland Margin)

TitlePaleomagnetic results from basement rocks from Site 917 (East Greenland Margin)
Authors
Issue Date1998
PublisherTexas A&M University, Ocean Drilling Program. The Journal's web site is located at http://www-odp.tamu.edu/publications/
Citation
Proceedings Of The Ocean Drilling Program: Scientific Results, 1998, v. 152, p. 259-264 How to Cite?
AbstractDuring Ocean Drilling Program Leg 152, 779 m of basaltic lavas within the oldest part of the seaward-dipping reflector sequence (SDSR) was drilled in Hole 917A. We present the results of studies of 150 paleomagnetic specimens sampled from 68 igneous units. We tried to reorient basalt pieces using Formation MicroScanner data so that declinations could be determined, but the attempt failed. Using paleointensity experiments, we also tried to test the thermal origin of magnetization of several units that may have recorded a geomagnetic short event. Chemical changes that occurred in minerals in the samples during heating prevented any conclusions from being reached. Conventional paleomagnetic experiments, however, allowed us to determine the inclinations of 74 of the 92 igneous units, directly or indirectly. The reversed polarity of the entire sequence and the presence of two cryptochrons recorded by three (possibly five) units in the Lower Series and one unit in the Middle Series are consistent with an extrusion of the volcanic sequence of Site 917 during the magnetic Chrons 24r, 25r, or 26r, but exclude magnetic Chron 27r.
Persistent Identifierhttp://hdl.handle.net/10722/151003
ISSN
2010 SCImago Journal Rankings: 0.355

 

DC FieldValueLanguage
dc.contributor.authorVandamme, Den_US
dc.contributor.authorAli, JRen_US
dc.date.accessioned2012-06-26T06:15:42Z-
dc.date.available2012-06-26T06:15:42Z-
dc.date.issued1998en_US
dc.identifier.citationProceedings Of The Ocean Drilling Program: Scientific Results, 1998, v. 152, p. 259-264en_US
dc.identifier.issn0884-5891en_US
dc.identifier.urihttp://hdl.handle.net/10722/151003-
dc.description.abstractDuring Ocean Drilling Program Leg 152, 779 m of basaltic lavas within the oldest part of the seaward-dipping reflector sequence (SDSR) was drilled in Hole 917A. We present the results of studies of 150 paleomagnetic specimens sampled from 68 igneous units. We tried to reorient basalt pieces using Formation MicroScanner data so that declinations could be determined, but the attempt failed. Using paleointensity experiments, we also tried to test the thermal origin of magnetization of several units that may have recorded a geomagnetic short event. Chemical changes that occurred in minerals in the samples during heating prevented any conclusions from being reached. Conventional paleomagnetic experiments, however, allowed us to determine the inclinations of 74 of the 92 igneous units, directly or indirectly. The reversed polarity of the entire sequence and the presence of two cryptochrons recorded by three (possibly five) units in the Lower Series and one unit in the Middle Series are consistent with an extrusion of the volcanic sequence of Site 917 during the magnetic Chrons 24r, 25r, or 26r, but exclude magnetic Chron 27r.en_US
dc.languageengen_US
dc.publisherTexas A&M University, Ocean Drilling Program. The Journal's web site is located at http://www-odp.tamu.edu/publications/en_US
dc.relation.ispartofProceedings of the Ocean Drilling Program: Scientific Resultsen_US
dc.titlePaleomagnetic results from basement rocks from Site 917 (East Greenland Margin)en_US
dc.typeArticleen_US
dc.identifier.emailAli, JR: jrali@hku.hken_US
dc.identifier.authorityAli, JR=rp00659en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0032418060en_US
dc.identifier.hkuros33712-
dc.identifier.volume152en_US
dc.identifier.spage259en_US
dc.identifier.epage264en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridVandamme, D=6701922380en_US
dc.identifier.scopusauthoridAli, JR=7102266465en_US

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