Major and trace elements and minerals at DSDP Hole 79-544A

Fifty m of basement rocks underlying 185 m of Neogene and Mesozoic sediments were drilled seaward of the Mazagan Slope about 100 km west of Casablanca during Leg 79. These rocks are metagranites with mylonitic textures consisting dominantly of quartz, plagioclase, and potassium feldspar. Chemically,...

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Bibliographic Details
Main Authors: Sachtleben, T, Schmincke, Hans-Ulrich
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1984
Subjects:
79-544A
Deep Sea Drilling Project
DRILL
Drilling/drill rig
DSDP
Glomar Challenger
Leg79
North Atlantic/PLATEAU
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.808530
https://doi.org/10.1594/PANGAEA.808530
Description
Summary:Fifty m of basement rocks underlying 185 m of Neogene and Mesozoic sediments were drilled seaward of the Mazagan Slope about 100 km west of Casablanca during Leg 79. These rocks are metagranites with mylonitic textures consisting dominantly of quartz, plagioclase, and potassium feldspar. Chemically, they are strongly peraluminous. This along with the absence of hornblende suggest that these rocks are similar to the S-type granites. Petrographic and chemical data suggest the possible existence of a former weathering surface on top of the Mazagan metagranite.

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