Six late Quaternary river terraces, preserved along the Clearwater River in northwestern Washington State, provide a ;140 ka record of long-term incision and uplift across the western side of the Cascadia forearc high. Terrace ages are constrained by weathering rind and radiocarbon dating and by correlation to dated coastal glacio-fluvial deposits and the global eustatic curve. The terraces ove...

The Late Cretaceous to Early Tertiary subsidence history of the Northern Calcareous Alps (NCA) records the effect of two independent basin formation mechanisms at the northern leading margin of the Austroalpine unit. The terrestrial to shallow-marine sediments of the Lower Gosau Subgroup were deposited mainly within small, fault-bound basins during a phase of strike-slip faulting from the late ...

This paper copes with the reconstruction of accretionary growth sequence from images of bi2 ological structures depicting concentric ring patterns. Accretionary growth shapes are modeled as the level-sets of a potential function. Given an image of a biological structure, the recon4 struction of the sequence of growth shapes is stated as a variational issue derived from geometric criteria. This ...

Abstract Several decades of field, geophysical, analogue, and numerical modeling investigations have enabled documentation the wide range tectonic transport processes in accretionary wedges, which constitute some most dynamic plate boundary environments on Earth. Active convergent margins can exhibit basal accretion (via underplating) leading to formation variably thick duplex structures or ero...

[1] The rheology that governs deformation within a convergent orogen also controls its topographic form, or in other words, the covaration of its height (or thickness) and its width. Under conditions pertaining to small orogens and for rheologies ranging from linear viscous to Coulomb plastic, we show that this topographic form is insensitive to the distributions of fluxes into and out of the w...

Megasplay faults, very long thrust faults that rise from the subduction plate boundary megathrust and intersect the sea floor at the landward edge of the accretionary prism, are thought to play a role in tsunami genesis. We imaged a megasplay thrust system along the Nankai Trough in three dimensions, which allowed us to map the splay fault geometry and its lateral continuity. The megasplay is c...

The forearc of south-central Chile (36°30?-42°S) is characterized by the presence a Coastal Cordillera and low lying area known as Central Depression. origin these morphostructural units has been largely debated. They have ascribed to different ages between Cretaceous Pliocene, tectonic causes that involve extensional or contractional deformation related Andean evolution accretionary processes ...