REFLECTIVE OCEANIC CRUST FORMED AT A FAST-SPREADING CENTER IN THE PACIFIC
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dc.contributor.author | Ranero C.R. | |
dc.contributor.author | Reston T.J. | |
dc.contributor.author | Belykh I. | |
dc.contributor.author | Gnibidenko H. | |
dc.date.accessioned | 2020-12-23T08:29:04Z | |
dc.date.available | 2020-12-23T08:29:04Z | |
dc.date.issued | 1997 | |
dc.identifier | https://elibrary.ru/item.asp?id=13255630 | |
dc.identifier.citation | Geology, 1997, , 6, 499-502 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/21139 | |
dc.description.abstract | We present new seismic images of Cretaceous crust formed at a fast-spreading center in the Pacific. The high crustal reflectivity observed in these data contradicts the conventional wisdom that accretionary structures formed at fast-spreading centers are not seismically detectable. Subhorizontal reflections can be traced at 600 800 ms two-way time below the top of basement for tens of kilometres, suggesting the presence of a widespread seismic boundary, possibly a structural discontinuity related to the maximum depth of hydrothermal circulation at the spreading center or the base of the sheeted dikes. Lower-crustal reflections, dipping dominantly toward the paleo spreading center, may represent mafic-ultramafic banding similar to that observed in the lower crust of reconstructed ophiolite sections. | |
dc.subject | Cretaceous | en |
dc.title | REFLECTIVE OCEANIC CRUST FORMED AT A FAST-SPREADING CENTER IN THE PACIFIC | |
dc.type | Статья | |
dc.subject.age | Mesozoic::Cretaceous | en |
dc.subject.age | Мезозой::Меловая | ru |
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