Rotation of horizontal stresses in the Australian North West Continental Shelf due to the collision of the Indo-Australian and Eurasian Plates

Article Abstract:

The Carnarvon Basin or Australian North West Continental Shelf is located in the southern region of the convergent northeastern boundary of the Indo-Australian Plate. The stress orientations in the Australian Northwest Continental Shelf were characterized by the action of tensional forces at subducting plate boundaries including heterogeneous forces from the northeastern boundary of the Indo-Australian Plate. Furthermore, the rotation of the regional maximum horizontal stress orientation in the northern Australian margin was affected by a more mature New Guinea orogen.

Analysis, Australia, Continental drift, Continents

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Transpression, displacement partitioning, and exhumation in the eastern Caribbean/South American plate boundary

Article Abstract:

The Caribbean/South American plate boundary zone of northeastern Venezuela is a classical orogenic belt exhibiting metamorphic hinterland and nonmetamorphic foreland folds and thrust belt. The northern belt was also characterized by the occurrence of metamorphic rocks such as eclogite on Margarita Island and staurolite on the Araya Peninsula. Furthermore, the high-grade metamorphic rocks consisted of east-northeast striking cleavages and east-northeast trending asymmetric stretching lineations.

South America, Morphotectonics

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Determination of Euler pole for contemporary relative motion of Caribbean and North American plates using slip vectors of interplate earthquakes

Article Abstract:

Usage of many slip vectors of shallow earthquakes from 1957 to 1991 aided in estimating the best present-day rotation Euler pole for Caribbean-North American plate motion. This rotation pole has prognostic utility in forecasting relative plate motion in a specific direction along most of the northern boundary of the Caribbean plate.

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