2012年2月5日 · In a model with thin lithosphere at the ridge crest and no embedded weakness in the fault, ridge push was responsible for a short transform fault, linking en-echelon rifts (Fig. 6 b). In a similar model, but with thick lithosphere, an oblique rift formed at about 20° to the offset trace ( …

2007年10月1日 · In models of straight ridges, the style of normal faults in the axial rift zone depended on the local thickness of the brittle sand layer. For thick layers, normal faults rafted out from the active zone of rifting, creating a fossil topography of tilted blocks, between faults dipping toward the ridge.

Oceanic transform faults are fundamental features of the mid-ocean ridge spreading system. Near the intersection of a slow-spreading ridge and a transform fault, axial topography is consis-tently asymmetric, with crust on the inside-corner (IC) elevated relative to that on the outside-

2017年10月20日 · The North America/Eurasia plate boundary zone in Iceland includes rift zones and transform faults analogous to those of the mid-ocean ridge system on the deep seafloor; Rift propagation and migration of transform faults result in widespread deformation of the upper basaltic crust (∼10 km thick) of Iceland

2022年4月15日 · New high-resolution bathymetric data from Atlantis Massif and surrounding seafloor (30°N, Mid-Atlantic Ridge) records avolcanic extension associated with the formation of the axial rift valley floor, following the tectonic truncation of an active corrugated oceanic detachment fault system.

2023年1月19日 · Here we use three-dimensional geodynamical numeric models to systematically simulate the interaction between rifting/spreading propagation and the pre-existing transform faults. Our model results provide the following findings.

transform intersections, topography due to strike-slip faults, litho- spheric flexure, asymmetry in topography of the median valley, tectonics. Abstract. A large topographic high commonly occurs near the intersection of a rifted spreading center and a transform fault.

1998年3月10日 · Axial morphology can then be divided into three classes, with distinct geographic borders: axial highs and rifted highs are observed west of a transform fault at 102°45′E; rift valleys are observed east of a transform fault at 114°E; and an intermediate-style morphology which alternates between a volcanic ridge and a shallow axial valley is ...

Most segments of the slow-spreading Mid-Atlantic Ridge (MAR) have an ordered structure with a rift valley in their axial part, which has higher narrow bottom in its central part in comparison with distal parts near the transform faults and nontransform offsets.

1993年4月15日 · This fault, referred to as the Husavik fault, meets with, and joins, north-trending normal faults of the Theistareykir fissure swarm in the axial rift zone. The most clear-cut of these junctions occurs in a basaltic pahoehoe lava flow, of Holocene age, where the Husavik fault joins a large normal fault called Gudfinnugja.