[1] Two fore‐arc magmatic belts exist in Kodiak Island, the granitic Kodiak batholith and the basaltic trenchward belt. Both are part of the 2100 km long Sanak‐Baranof belt, interpreted to result from trench‐ridge‐trench (T‐R‐T) triple‐junction migration. In this hypothesis, trenchward belt basaltic rocks formed as the spreading ridge first entered the accretionary prism, and the larger Kodiak ...

Along the Isthmus of Panama 23 paleomagnetic sites were sampled in order to determine preliminary block rotations and paleolatitudinal movements. The lithology selected for this research corresponds to volcanic and sedimentary rocks with ages ranging from Upper Cretaceous to Pleistocene. Counterclockwise vertical axis rotations were uncovered in Paleocene and Oligocene units separated by a sini...

Abstract We investigate the problem of fluid injection at constant pressure in a 2D Discrete Fracture Network (DFN) with randomly oriented and uniformly distributed frictionally-stable fractures. show that this shares similarities simpler scenario single planar shear fracture, investigated by Bhattacharya Viesca (2019); (2021) whose results are here extended to include closed form solutions for...

The initiation and evolution of seismic activity in intraplate regions are controlled by heterogeneous stress highly fractured rocks within the rock mass triggered fluid migration. In this study, we imaged electrical structure crust beneath Ganzi fault using a three-dimensional magnetotelluric inversion technique, which is host to an assemblage resistive conductive features extending into lower...

a r t i c l e i n f o Recent high-resolution GPS and seismological data reveal that tectonic faults exhibit complex, multi-mode slip behavior including earthquakes, creep events, slow and silent earthquakes, low-frequency events and earthquake afterslip. The physical processes responsible for this range of behavior and the mechanisms that dictate fault slip rate or rupture propagation velocity ...

Introduction: Quaternary basalts are one of the last signs of magmatism in Iran, some of which are related to deep fractures and active faults in the Quaternary. Quaternary basalts of Tabas are very important due to their high expansion and location in eastern Iran, and are located 140 km south east of Tabas city and according to the proposed divisions are part of the Lut zone. The aim of this...

Clay minerals are the signature of hydrothermal alterations related to fluid circulation in volcanic and crystalline rocks. In French part Upper Rhine Graben, deep-seated granites, illitic (illite I/S mixed layers (ml)) typical products structurally-controlled argillic alteration Paleozoic granitic basement. new Illkirch geothermal well, GIL-1, drill-cuttings were studied with various petrograp...

Numerous laboratory and field experiments suggest that electrical properties of fractured rocks may provide critical information regarding the topological properties of the underlying fracture networks. However, a lack of numerical studies dedicated to realistic fractured media prevents us from assessing, in a systematic manner, the relationships between electrical and topological properties in...