Extension in the southern Ryukyu arc (Japan): Link with oblique subduction and back arc rifting
Article Abstract:
Fracture analysis was undertaken on the four main islands of the southern Ryukyu arc, at the island scale and by interpretation of air photographs of Miyako and Yonaguni, with the aim of checking the relative significance of extensional tectonics. A pre-Miocene intermediate-type stress field was recorded in Eocene rocks of Ishigaki Island, although Neogene to Quaternary strata recorded just tensional stress fields. No onshore structure was recognized that may suggest strike-slip or reverse-slip deformation in the Neogene or Quaternary strata.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Cenozoic intracontinental dextral motion in the Okhotsk-Japan sea region
Article Abstract:
A northward-trending, 2000-km right-lateral shear zone extends from central Japan to northern Sakhalin. Characterized by a major discontinuity and en echelon sigmoidal thrusts, folds and Miocene basins, the zone has accommodated hundreds of kilometers of displacement and had been active mainly in the Neogene. In the north, the zone has a transpressional style which changes to transtensional in its southern area. The dextral pull-apart opening of the Japan Sea was caused by this zone's strike-slip movement.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Response of intracontinental deformation in the central Andes to late Cenozoic reorganization of South American Plate motions
Article Abstract:
A detailed view of late Cenozoic kinematic reorganization in the southern central Andes is provided.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Geodynamics of the northern Andes: subductions and intracontinental deformation (Columbia). The two main steps of the Atlas building and geodynamics of the western Mediterranean
- Abstracts: Eclogitic metasediments from the Tso Morari area (Ladakh, Himalaya): evidence for continental subduction during India-Asia convergence
- Abstracts: Paleomagnetism and paleogeography of the Northern Calcareous Alps (Austria). Jurassic and Cretaceous paleomagnetic data from the Southern Alps (Italy)
- Abstracts: The kinematic history of the Pennine Nappes east of the Lepontine Dome: implications for the tectonic evolution of the Central Alps