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Digitale Medien

Submarine outcrop and acoustic expression of lithified sediment layers in northwest Providence Channel, Bahamas (1999)

Slowey, N. C. ; Neumann, A. C. ; Burns, S. J.

Springer

Geo-marine letters 18 (1999), S. 292-296

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Details

ISSN: 1432-1157

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie

Notizen: Abstract Visual observations of the wall of Great Bahama Canyon indicate that ledges produced by differential submarine erosion occur at depths like reflectors on high-resolution seismic profiles, suggesting lithologic changes produce acoustic impedance contrasts and therefore reflectors. Quaternary-aged sediments in a core from Little Bahama Bank exhibit changes in lithology (and presumably acoustic impedance) associated with glacial-to-interglacial transitions, which also correspond in depth to seismic reflectors. This supports the concept that reflectors on high-resolution seismic profiles of Bahamian periplatform ooze correspond directly to changes in lithology and may be associated with climate/sea level fluctuations.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s003670050082

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