Controls on fault zone structure and brittle fracturing in the foliated hanging-wall of the Alpine Fault

Autor: Jack N. Williams, Virginia G. Toy, Cécile Massiot, David D. McNamara, Steven A. F. Smith, Steven Mills
Rok vydání: 2017
DOI: 10.5194/se-2017-112
Popis: The orientations and densities of fractures in the foliated hanging-wall of the Alpine Fault provide insights into the role of a mechanical anisotropy in upper crustal deformation, and the extent to which existing models of fault zone structure can be applied to active plate-boundary faults. Three datasets were used to quantify fracture damage at different distances from the Alpine Fault principal slip zones (PSZs): (1) X-ray computed tomography (CT) images of drill-core collected within 25 m of the PSZs during the first phase of the Deep Fault Drilling Project that were reoriented with respect to borehole televiewer images, (2) field measurements from creek sections at
Databáze: OpenAIRE