Annotated record of the detailed examination of Mn deposits from DSDP Leg 82 (Holes 556, 558, 559, 562, 563, 564)

One of the most important geologic discoveries of the 1960s was the remarkable uniformity of the basalts produced at mid-ocean ridges. These basalts have a markedly different tholeiitic composition compared to the alkalic basalts from ocean islands. But very little is known about temporal variations...

Full description

Bibliographic Details
Main Authors: Bougault, Henri, Cande, Steven C
Format: Dataset
Language:English
Published: PANGAEA 1985
Subjects:
82-556
82-558
82-559
82-562
82-563
82-564
Comment
Deep Sea Drilling Project
Deposit type
DEPTH
sediment/rock
Description
DRILL
Drilling/drill rig
DSDP
Elevation of event
Event label
Glomar Challenger
Identification
Latitude of event
Leg82
Longitude of event
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
North Atlantic
North Atlantic/RIDGE
Position
Quantity of deposit
Sample code/label
Sediment type
Size
Substrate type
Visual description
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.875570
https://doi.org/10.1594/PANGAEA.875570
Description
Summary:One of the most important geologic discoveries of the 1960s was the remarkable uniformity of the basalts produced at mid-ocean ridges. These basalts have a markedly different tholeiitic composition compared to the alkalic basalts from ocean islands. But very little is known about temporal variations in the composition of basalts derived from one or several mantle sources associated with both normal and anomalously shallow sections of the mid-ocean ridges. The strategy for drilling on DSDP Leg 82 was to set up a broad grid encompassing all possible drilling sites west and southwest of the present Azores Triple Junction in order to investigate these problems.

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