Description, geochemistry and growth rate of buried nodules from the Central Indian Basin


Autoria(s): Banerjee, R; Iyer, SD; Dutta, P
Cobertura

LATITUDE: -9.516667 * LONGITUDE: 75.966667

Data(s)

26/10/1991

Resumo

Buried nodules from siliceous sediments in the central Indian Basin are morphologically variable and mineralogically consist of d-MnO2 and incipient todorokite. Compositionally they are weakly diagenetic. The sediment coarse fractions (>63 µm) at different depths show variable abundances of micronodules, volcanic glass shards and biodebris. Dissolution of biodebris increases and abundance of micronodules decreases with increasing depth. Enrichment in Mn, Fe, Cu, Ni, Co, together with a decrease in organic carbon in the sediment column, may result from diagenetic metal remobilization. Diagenetically remobilized trace metals might have been utilized for the growth of micronodules over the buried nodules.

Formato

application/zip, 2 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.854348

doi:10.1594/PANGAEA.854348

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: Banerjee, R; Iyer, SD; Dutta, P (1991): Buried nodules and associated sediments from the central Indian basin. Geo-Marine Letters, 11(2), 103-107, doi:10.1007/BF02431037

Palavras-Chave #µ; After Lyle, M (1982); Atomic absorption spectrometry (AAS); BC; Box corer; Co; Cobalt; Comment; Copper; Cu; Deposit type; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth top; Description; Fe; Growth rate; highest; Indian Ocean; Iron; lowest; Manganese; Mn; Ni; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity; Quantity of deposit; Sample ID; Sediment; sediment features; Sediment type; Size; SKAN22-B1
Tipo

Dataset