A new multilayered model for intraplate stress-induced differential subsidence of faulted lithosphere, applied to rifted basins

Article Abstract:

A new model is presented for intraplate stress-induced subsidence and uplift in rifted basins that factors in the flexure of a multilayered continental lithosphere and its structural configuration prior to the change in the in-plane stress regime. The new model requires a lower horizontal stress level change to explain observed differential vertical motions. Its results confirm a previous hypothesis that an increase in the level of compressive far-field in-plane stress causes flank uplift and basin center subsidence.

Models and modelmaking, Models (Toys), Subsidences (Earth movements), Land subsidences

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Mechanical modeling of compressional basins: origin and interaction of faults, erosion, and subsidence in the Ventura basin, California

Article Abstract:

A study was conducted to develop a numerical model of the east central Ventura compressional basin, Transverse Ranges, southern CA, using geophysical observations and some fundamental geological theories. Several conclusions can be drawn from this model and are discussed. This numerical model allows scientists to understand the simultaneous effects of the response of a faulted crust to compression, erosion/sedimentation and fault activity.

Mathematical models, Geology, Structural, Structural geology, Southern California

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Evidence for the eastward migration of the Alboran Sea based on regional subsidence analysis: a case for basin formation by the delamination of the subcrustal lithosphere?

Article Abstract:

The evolution of the Neogene Alboran Sea basin of the westernmost Mediterranean is a clear example of an extensional basin forming at the site of colliding continents. While the deformation front of the Alboran domain moved towards the west, subsidence in the Alboran Sea basin migrated east/southward propagating, delaminating subcrustal lithospheric slab. The technique of backstripping has been reconstructed for the basin.

Mediterranean Sea, Plate tectonics, Continental drift, Western Mediterranean region

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