Annotated record of the detailed examination of Mn micronodules from stations over George Bank, Atlantic Ocean


Autoria(s): Poppe, L J; Commeau, RF; Commeau, JA; Manheim, Frank T; Aruscavage, P J
Cobertura

MEDIAN LATITUDE: 40.995167 * MEDIAN LONGITUDE: -67.080833 * SOUTH-BOUND LATITUDE: 40.673000 * WEST-BOUND LONGITUDE: -67.747000 * NORTH-BOUND LATITUDE: 41.233000 * EAST-BOUND LONGITUDE: -66.642000 * DATE/TIME START: 1957-08-28T00:00:00 * DATE/TIME END: 1965-08-22T00:00:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m

Data(s)

27/07/1984

Resumo

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.

Formato

text/tab-separated-values, 42 data points

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.863406

doi:10.1594/PANGAEA.863406

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: Poppe, L J; Commeau, RF; Commeau, JA; Manheim, Frank T; Aruscavage, P J (1984): Ferromanganese micronodules from the surficial sediments of Georges Bank. Journal of Marine Research, 42(2), 463-472, doi:10.1357/002224084788502765

Palavras-Chave #AB3_101; AB3101-W167; AB3101-W169; AB3101-W180; AB4_11; AB411-2545K; Age, comment; Albatross III (1948-1959); Albatross IV (1963); Atlantic Ocean; DEPTH, sediment/rock; Description; Device of event; Dredge; DRG; Elevation of event; Event label; GOS22; GOS22-1114; GOS22-1123; Gosnold; Grab; GRAB; Identification; Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Type; Visual description
Tipo

Dataset