Observation of manganese coating and encrustation in different environments of the North-Western Atlantic ocean
Cobertura |
MEDIAN LATITUDE: 34.022336 * MEDIAN LONGITUDE: -67.088778 * SOUTH-BOUND LATITUDE: 30.816676 * WEST-BOUND LONGITUDE: -78.833333 * NORTH-BOUND LATITUDE: 37.683333 * EAST-BOUND LONGITUDE: -60.000000 * DATE/TIME START: 1960-10-18T00:00:00 * DATE/TIME END: 1962-06-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m |
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Data(s) |
30/08/1968
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Resumo |
The major topographic features, or provinces, beyond the continental slope off the Atlantic coast of the United States are (1) Sohm Plain, (2) Hatteras Plain, (3) Nares Plain, (4) Blake Basin, (5) Blake Plateau-Bahama Banks, and (6) Bermuda Rise. The whole of the described area is commonly referred to as the North American Basin. This basin is bounded on the north by Newfoundland Ridge and on the south by Puerto Rico Trench. Topographic features of note within the basin are the divide and the area of depressions between Sohm and Hatteras Plains, the sharply crested Blake Ridge, and the Puerto Rico Ridge. Recently accumulated data on deep-sea oores has given good evidence that the silt and sand covering the abyssal plains are displaced continental sediments in a virtually quartz-free oceanic environment. These sediments were deposited on a primary volcanic bottom. The primary or volcanic bottom is characterized by abyssal hills and seamounts, and the sediment bottom is characterized by abyssal plains, which extend seaward from the continental margins. On the Blake Plateau, bottom photographs and dredge hauls in the axis of the stream show that locally sediment has been removed and the bottom is paved with crusts and nodules of manganese. Photographs and dredged samples from the outer part of the New England Seamount, Chain and Caryn Peak also indicate extensive encrustations of manganese oxide which acts as a binding agent in areas of ooze or other organic debris and thus helps to stabilize the bottom. |
Formato |
text/tab-separated-values, 25 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.864210 doi:10.1594/PANGAEA.864210 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Relação |
Grant, J Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, doi:10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, doi:10.7289/V53X84KN |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Pratt, Richard M (1968): Atlantic continental shelf and slope of the United States - Physiography and sediments of the deep-sea basin. U.S. Geological Survey Professional Paper, 529-B, 50 pp, https://pubs.er.usgs.gov/publication/pp529B |
Palavras-Chave | #AT260; AT260-7D; AT26601; AT266-15C; AT28001; AT280-05C; Atlantic Ocean; Atlantis (1931); Bermuda Rise; Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Event label; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Photo/Video; Position; PV; Quantity of deposit; Sample ID; Sediment type; Substrate type; Uniform resource locator/link to image |
Tipo |
Dataset |