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:
12-113
Comment
Deep Sea Drilling Project
Deposit type
DEPTH
sediment/rock
Description
DRILL
Drilling/drill rig
DSDP
Glomar Challenger
Identification
Leg12
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
North Atlantic/VALLEY
Position
Quantity of deposit
Sample code/label
Sediment type
Visual description
Charcot
Labrador Sea
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.868657
https://doi.org/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.

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