New geologic mapping, morphologic fault scarp modeling, and geomorphic metrics in the Red Rock Valley, southwestern Montana, help characterize the Quaternary history of the virtually unstudied Monument Hill fault and tectonics of the youthful and seismically active Red Rock graben. Two generations of Pleistocene surface ruptures are preserved along the Monument Hill fault. Similarity in rupture...

The volcano-sedimentary succession of the Cerro Piche Graben, Río Negro province, Patagonia (Argentina), was studied U–Pb and Lu–Hf in zircon. As well, a stratigraphic, sedimentological, palynology review paleoflora content made. combined stratigraphic geochronological study on indicates that Graben developed during Early Jurassic allow us to propose Formation. This formation is composed lower ...

[Abstract Although seismic and stratigraphic well information put tight constraints on rift basin evolution, eroded shoulders commonly expose polydeformed prerift basement whose deformation history may be difficult to constrain. In this work, we apply K‐Ar dating of fault gouge samples from 18 faults explore the brittle well‐exposed eastern margin northern North Sea rift. We find evidence clay ...