Annotated record of the detailed examination of Mn deposits from DSDP Site 113, Leg 12 (Cores 113-3, 113-11) ...

Seismic reflection profiles across the Labrador Sea by Vema-19 and Charcot-S had revealed a rugged basement topography almost entirely buried by sediments up to 2000 meters thick. It was first suggested that this was the median valley of a mid-Labrador Sea ridge where oceanic crust was generated dur...

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Bibliographic Details
Main Authors: Laughton, Anthony S, Berggren, William A, Benson, Richard N, Davies, Thomas A, Franz, Ulrich, Musich, L F, Perch-Nielsen, Katharina, Ruffman, A, van Hinte, Jan E, Whitmarsh, Robert B, Bukry, David
Format: Dataset
Language:English
Published: PANGAEA 1972
Subjects:
Identification
Sample code/label
DEPTH, sediment/rock
Position
Deposit type
Quantity of deposit
Sediment type
Comment
Description
Drilling/drill rig
Visual description
Leg12
Glomar Challenger
Deep Sea Drilling Project DSDP
NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS
Charcot
Labrador Sea
Online Access:https://dx.doi.org/10.1594/pangaea.868657
https://doi.pangaea.de/10.1594/PANGAEA.868657
Description
Summary:Seismic reflection profiles across the Labrador Sea by Vema-19 and Charcot-S had revealed a rugged basement topography almost entirely buried by sediments up to 2000 meters thick. It was first suggested that this was the median valley of a mid-Labrador Sea ridge where oceanic crust was generated during the last phase of opening of the Labrador Sea but which is now virtually inactive and covered by sediment. The choice of a site where basement could be dated by sampling sediments that were believed to be the same age as the basement was difficult. Site 113 was eventually chosen in a local valley 8 kilometers south of a small knoll believed, from the Vema-ll record, to be a basement high. ... : 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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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