The Moho as a magnetic boundary revisited
Approximately 400 globally distributed xenolith samples are examined to determine whether continental regions are characterized by relatively magnetic crusts lying on relatively nonmagnetic mantles. Samples of mantle peridotites and mafic granulites by Wasilewski et al. (1979) are supplemented by sa...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930033024 2023-05-15T14:04:19+02:00 The Moho as a magnetic boundary revisited Wasilewski, P. J. Mayhew, M. A. Unclassified, Unlimited, Publicly available Nov. 20, 1992 http://ntrs.nasa.gov/search.jsp?R=19930033024 unknown http://ntrs.nasa.gov/search.jsp?R=19930033024 Accession ID: 93A17021 Copyright Other Sources 46 Geophysical Research Letters; 19; 22; p. 2259-2262. 1992 ftnasantrs 2012-02-15T19:59:22Z Approximately 400 globally distributed xenolith samples are examined to determine whether continental regions are characterized by relatively magnetic crusts lying on relatively nonmagnetic mantles. Samples of mantle peridotites and mafic granulites by Wasilewski et al. (1979) are supplemented by samples of mantle and crustal xenoliths from Asia, North America, Africa, and Antarctica. The data indicate that a magnetic crustal layer overlies a nonmagnetic mantle much in the same manner as proposed by Jarchow and Thompson (1989). Nonmagnetic chrome spinels and magnesian ilmenites make up the ultramafic upper-mantle xenolith suite. Mafic rocks are the typically magnetic components of the crust, and induced magnetizations can account for long-wavelength magnetic anomalies measured remotely by aircraft and spacecraft. Other/Unknown Material Antarc* Antarctica NASA Technical Reports Server (NTRS) Wasilewski ENVELOPE(-71.401,-71.401,-75.178,-75.178) |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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46 |
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46 Wasilewski, P. J. Mayhew, M. A. The Moho as a magnetic boundary revisited |
topic_facet |
46 |
description |
Approximately 400 globally distributed xenolith samples are examined to determine whether continental regions are characterized by relatively magnetic crusts lying on relatively nonmagnetic mantles. Samples of mantle peridotites and mafic granulites by Wasilewski et al. (1979) are supplemented by samples of mantle and crustal xenoliths from Asia, North America, Africa, and Antarctica. The data indicate that a magnetic crustal layer overlies a nonmagnetic mantle much in the same manner as proposed by Jarchow and Thompson (1989). Nonmagnetic chrome spinels and magnesian ilmenites make up the ultramafic upper-mantle xenolith suite. Mafic rocks are the typically magnetic components of the crust, and induced magnetizations can account for long-wavelength magnetic anomalies measured remotely by aircraft and spacecraft. |
format |
Other/Unknown Material |
author |
Wasilewski, P. J. Mayhew, M. A. |
author_facet |
Wasilewski, P. J. Mayhew, M. A. |
author_sort |
Wasilewski, P. J. |
title |
The Moho as a magnetic boundary revisited |
title_short |
The Moho as a magnetic boundary revisited |
title_full |
The Moho as a magnetic boundary revisited |
title_fullStr |
The Moho as a magnetic boundary revisited |
title_full_unstemmed |
The Moho as a magnetic boundary revisited |
title_sort |
moho as a magnetic boundary revisited |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19930033024 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-71.401,-71.401,-75.178,-75.178) |
geographic |
Wasilewski |
geographic_facet |
Wasilewski |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19930033024 Accession ID: 93A17021 |
op_rights |
Copyright |
_version_ |
1766275355282243584 |