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Origin of Amazon mudbanks along the northeastern coast of South America

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Origin of Amazon mudbanks along the northeastern coast of South America; 2000; Article; Journal; Marine Geology; Allison, M. A.; Lee, M. T.; Ogston, A. S.; Aller, R. C.

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Seismic profiles, sediment cores, and water column measurements were collected along the northeastern coast of Brazil to examine the origin of mudbanks in the Amazon coastal mud belt. These 10-60-km-long, shore-attached features previously had been observed to migrate along the 1200 km coast of the Guianas in response to wave forcing. CHIRP (3.5 kHz) seismic profiles of the shoreface and inner shelf located two mudbanks updrift of the previous eastern limit in French Guiana. 210Pb geochronology shows that these two banks are migrating to the northwest over a relict mud surface in 5-20 m water depth. The mudbanks are 3-4 m thick and are translating over a modern shoreface mud wedge deposited by previous mudbank passage in < 5 m water [...]

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Type Scheme Key
local-index unknown 70022954
local-pk unknown 70022954
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/S0025-3227(99)00120-6
series unknown Marine Geology

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journalMarine Geology
parts
typevolume
value163
typeissue
value1-4
languageEnglish
citationTypeArticle

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