Publication Date:
1997-03-14
Description:
Strong, scattered reflections beyond 8 degrees (8degrees) offset are characteristic features of all high-resolution seismic sections from the continents. The reflections identify a low-velocity zone below approximately 100 kilometers depth beneath generally stratified mantle. This zone may be caused by partial melting, globally initiated at equal depth in the continental mantle. Solid state is again attained at the Lehmann discontinuity in cold, stable areas, whereas the zone extends to near the 400-kilometer discontinuity in hot, tectonically active areas. Thus, the depth to the Lehmann discontinuity may be an indicator of the thermal state of the continental mantle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thybo -- Perchuc -- New York, N.Y. -- Science. 1997 Mar 14;275(5306):1626-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉H. Thybo, Geological Institute, University of Copenhagen, Oster Voldgade 10, DK-1350 Copenhagen K, Denmark. E. Perchuc, Institute of Geophysics, Polish Academy of Sciences, ul.Ksiecia Janusza 64, PL-01452 Warsaw, Poland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9054353" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
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Natural Sciences in General
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Physics
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