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DSDP 367

Coordinates: 12°29′2″N 20°2′8″W / 12.48389°N 20.03556°W / 12.48389; -20.03556
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DSDP profiles of 367 and 368

The DSDP 367 was an area that was drilled as part of the Deep Sea Drilling Project that took place below the Cape Verde Basin.

Location

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The area was drilled from February 22 to March 1, 1975 by the ship Glomar Challenger before DSDP 368 was drilled. Its location was at 12°29.2'N and, 20°02.8'W and is located 370 km southwest of Dakar and 460 km southeast of Praia, Cape Verde and south of the Cape Verde Rise. The seabed is 4,768 meters deep. The drilling carried a total of 984.5 meters of sediment.

Stratigraphy

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At the ocean floor and below consists of several layers including nanomarls (1), clays (2), multicolored silty clay (3), that level located 5,000 meters deep, below are black shales (4a and 4b) and nano-limestones (5a and 5b). Below is the oceanic crust composing basalt (7) just below around 5,800 metres deep.

The top part were formed during the Pleistocene and Miocene age, the second unit were formed during the Late Eocene age, the b subunit were also formed during the Late Paleocene age. The lower units were formed during the Valangian, Oxfordian and Kimmeridgian ages.

Fossil content

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Not including benthic and planktonic (or planctonic) materials. There are types of nanoplanktons (or nanoplanktons) as well as sponge needles.

Foraminifers

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Planktonic foraminifers are found at around 200 meters below the ocean floor, they include:

Coccoliths

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Coccoliths are founded up to 250 meters below the ocean floor, the drilling area, they include:

Radiolaria

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Several radiolaria were made during the Late Pleistocene, Early Miocene and Early Eocene periods:

Geological development

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Unlike DSDP 368 which is located 550 km north in the Cape Verde Basin, the Upper Jurassic and the Lower Cretaceous sediments below the black shale of the oceanic crust are founded.[1]

References

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  1. ^ Ewing, J. I.; Hollister, C. D (1972). Regional aspects of deep sea drilling in the western North Atlantic, Initial Reports of the Deep Sea Drilling Project. Vol. 1. Washington: United States Government Printing Office. p. 951–973.

Further reading

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  • The Shipboard Scientific Party (Hrsg.): Site 367: Cape Verde Basin. 1975, p. 233–326.

12°29′2″N 20°2′8″W / 12.48389°N 20.03556°W / 12.48389; -20.03556