Annotated record of the detailed examination of Mn deposits from DSDP Leg 49 (Holes 407, 408, 410, 412, 412A) ...

Leg 49 of the International Phase of Ocean Drilling (IPOD) was designed with a wide spectrum of problems in mind. Topics investigated were (1) variation with time of mantle sources of spreading-center magmas, (2) aging of the volcanic layer, (3) degree of hydrothermal alteration and metamorphism of...

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Bibliographic Details
Main Authors: Luyendyk, Bruce P, Cann, Joe R, Sharman, G, Roberts, W P, Shor, A N, Duffield, W A, Varet, J, Zolotarev, Boris P, Poore, Richard Z, Steinmetz, J C, Kobayashi, Kazuo, Vennum, W, Wood, D A, Steiner, M
Format: Dataset
Language:English
Published: PANGAEA 1979
Subjects:
Event label
Identification
Sample code/label
DEPTH, sediment/rock
Position
Deposit type
Quantity of deposit
Substrate type
Sediment type
Comment
Description
File name
Uniform resource locator/link to image
Drilling/drill rig
Visual description
Leg49
Glomar Challenger
Deep Sea Drilling Project DSDP
NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS
Iceland
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.872401
https://doi.pangaea.de/10.1594/PANGAEA.872401
Description
Summary:Leg 49 of the International Phase of Ocean Drilling (IPOD) was designed with a wide spectrum of problems in mind. Topics investigated were (1) variation with time of mantle sources of spreading-center magmas, (2) aging of the volcanic layer, (3) degree of hydrothermal alteration and metamorphism of the volcanic layer, (4) lateral and vertical variation of the petrochemistry, magnetic properties, and structure of the volcanic layer, (5) north-south variability of spreading-center magmas through the North Atlantic, (6) initiation of glaciation during the late Pliocene, and (7) the influence of bottom currents originating at the Iceland-Faeroes Ridge on sediments of the ridge flank province of the western North Atlantic. ... : From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database. ...

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