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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1984
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| Accesso online: | https://doi.org/10.1594/PANGAEA.863406 |
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| _version_ | 1867170992130883584 |
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| author | Poppe, L J Commeau, R F Commeau, J A Manheim, Frank T Aruscavage, P J |
| author_facet | Poppe, L J Commeau, R F Commeau, J A Manheim, Frank T Aruscavage, P J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Ferromanganese micronodules have been found on Georges Bank, off the U.S. northeast coast, distributed throughout the surficial sediments within an area about 125 km long and at least 12 km wide. These coarse, sand-sized concretions have precipitated from metal-rich interstitial waters and contain many of the textural and structural features common to other neritic nodules. Most of the nodules have accreted around detrital grains, and X-ray powder diffraction analyses indicate the presence of geothite and vernadite ( delta -MnO sub(2)) in the ferromanganese layers. Chemical analyses of the micronodules, when compared with similar data on deep-sea manganese nodules, reveal lower Mn/Fe ratios, significantly higher concentrations of V and As, comparable values of Mo, and an order of magnitude less of Co, Ni, Ce and most other, metals. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_863406 |
| institution | PANGAEA |
| language | en |
| publishDate | 1984 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Annotated record of the detailed examination of Mn micronodules from stations over George Bank, Atlantic Ocean Poppe, L J Commeau, R F Commeau, J A Manheim, Frank T Aruscavage, P J AB3_101; AB3101-W167; AB3101-W169; AB3101-W180; AB4_11; AB411-2545K; Albatross III (1948-1959); Albatross IV (1963); Atlantic Ocean; Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; GOS22; GOS22-1114; GOS22-1123; Gosnold; Grab; GRAB; Identification; Latitude of event; Longitude of event; Method/Device of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Visual description Ferromanganese micronodules have been found on Georges Bank, off the U.S. northeast coast, distributed throughout the surficial sediments within an area about 125 km long and at least 12 km wide. These coarse, sand-sized concretions have precipitated from metal-rich interstitial waters and contain many of the textural and structural features common to other neritic nodules. Most of the nodules have accreted around detrital grains, and X-ray powder diffraction analyses indicate the presence of geothite and vernadite ( delta -MnO sub(2)) in the ferromanganese layers. Chemical analyses of the micronodules, when compared with similar data on deep-sea manganese nodules, reveal lower Mn/Fe ratios, significantly higher concentrations of V and As, comparable values of Mo, and an order of magnitude less of Co, Ni, Ce and most other, metals. |
| title | Annotated record of the detailed examination of Mn micronodules from stations over George Bank, Atlantic Ocean |
| topic | AB3_101; AB3101-W167; AB3101-W169; AB3101-W180; AB4_11; AB411-2545K; Albatross III (1948-1959); Albatross IV (1963); Atlantic Ocean; Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; GOS22; GOS22-1114; GOS22-1123; Gosnold; Grab; GRAB; Identification; Latitude of event; Longitude of event; Method/Device of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Visual description |
| url | https://doi.org/10.1594/PANGAEA.863406 |