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Multimodal Optical Microscopy Methods Reveal Polyp Tissue Morphology and Structure in Caribbean Reef Building Corals

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Moroccan crustal response to continental drift.

W H Kanes, M Saadi, E Ehrlich

Science (New York, N.Y.)

|June 1, 1973

Summary

The breakup of Pangea and Atlantic Ocean formation involved mantle dynamics and continental crust spreading over 100 million years. Morocco

Area of Science:

Geology
Tectonics
Geodynamics

Background:

The breakup of the supercontinent Pangea and the formation of the Atlantic Ocean were driven by mantle dynamics and crustal spreading.
The Moroccan continental crust preserves a detailed record of these tectonic events.

Purpose of the Study:

To analyze the crustal response to mantle dynamics during Pangea's breakup.
To understand the timing and mechanisms of the Atlantic Ocean's formation.
To investigate the role of late Paleozoic orogenesis in initiating Mesozoic rifting.

Main Methods:

Analysis of structural and depositional patterns in the Moroccan crust.
Interpretation of geological data to reconstruct past tectonic stresses and environments.

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Main Results:

The African margin stabilized into a marine carbonate environment by the Middle Jurassic.
Early Mesozoic tensile stresses created two fault systems and a basin and range structural style.
Late Paleozoic metamorphism and intrusion preceded Mesozoic spreading events.

Conclusions:

Mantle dynamics required over 100 million years to facilitate Pangea's breakup and the Atlantic's formation.
Late Paleozoic thermal orogenesis may have initiated the early stages of the spreading center development.
The Moroccan crust provides a comprehensive record of continental response to mantle-driven rifting.