Inversion tectonics and the evolution of the High Atlas Mountains, Morocco, based on a geological-geophysical transect

Article Abstract:

The High Atlas Mountains of Morocco formed over a major intracontinental rift system when African and European plates converged during the Cenozoic. A geophysical-geological cross section across the central High Atlas Mountains to understand better how intracontinental mountain belts are formed. This allows the study of the kinematic history of the mountain belt and how strain is partitioned. The results show the huge difference between the evolution and current structural architecture of the mountain belt, compared to mountain belts associated with plate boundary processes.

Atlas Mountains

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Mid-Cretaceous extensional tectonics of the Yukon-Tanana terrane, trans-Alaska crustal transect (TACT), east-central Alaska

Article Abstract:

Structural studies along the trans-Alaska crustal transect (TACT) of the Alaskan Yukon-Tanana terrane (YTT) indicate that crustal extension played a major role in the geologic history of the region. However, the tectonic mechanism for the extensional event within the YTT is vague, and models rangingfrom back arc extension to gravity spreading within a plateau uplift are allowable as mechanisms for the extensional event.

Geology, Stratigraphic, Stratigraphy, Cretaceous period

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Kinematics of basin development during the transition from terrane accretion to strike-slip tectonics, Late Cretaceous-early Tertiary Cantwell Formation, south central Alaska

Article Abstract:

New chronologic, stratigraphic and structural data is presented defining an accretionary to strike-slip transition in rocks of the Cretaceous-Tertiary Cantwell basin in south central Alaska. The Cantwell basin kinematics are compatible with an escape tectonics model for south central Alaska.

Kinematics

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