... on these older features are steeply dipping faults, gentle folds, and landslide masses related to movements on the Old Dad normal fault, a Basin and Range fault of Neogene age. Recognition of early Mesozoic and probable late Mesozoic structures of compressional origin at Old Dad Mountain lends support...

...Peter Molnar; Paul Tapponnier Abstract The active tectonics of northeast China is dominated by strike-slip and normal faulting, with right-lateral motion on north-northeast-trending planes, left-lateral motion on west-northwest-trending planes, and extension in approximately a north-northwest...

...JOHN M. PROFFETT, JR. Abstract In the Yerington district, western Nevada, pre-Tertiary rocks are overlain by an Oligocene ignimbrite sequence and Miocene andesites. Basin and Range normal faulting began in Miocene time, as andesitic volcanism died out (17 to 18 m.y. ago), and has continued...

... of the central part of the Great Basin. It is characterized by steeply dipping normal faults and gently tilted blocks, with a preferred north to northeast trend. Evidence of greater extension occurs in the other deformational field, which lies between Walker Lane and the Sierra Nevada and extends across...

... limestones. The stratigraphic sequence ( Fig. 4 ) represents the normal vertical continuity of sediments, undistorted by structural deformation. The presence of overthrust faulting has been recognized for at least 25 years in this area, since before the first oil production in the province...

.... Composite fault-plane solutions for the Helena region showed both strike-slip and normal fault mechanisms, but with consistent northeast-trending T axes. The occurrence of both types of faulting could be interpreted as a result of stress reorientation with depth or the result of a simple shear acting along...

...NEIL H. KENYON; ARTHUR H. STRIDE; ROBERT H. BELDERSON Abstract A fault pattern has been mapped in plan view on part of the Nile cone by means of long-range (13 km) side-scan sonar. It is interpreted with the aid of air-gun profiles as consisting of a belt of normal faults, the largest of which...

...Paul B. Slack Abstract The major structural features of the northeast part of the Rio Puerco fault zone are (1) north- to northwest-trending folds, (2) northeast-trending normal faults, and (3) north-trending normal faults. These structures formed in response to an older north-oriented shear couple...

...I. Ermanovics; W. F. Fahrig Abstract Northeasterly trending, tholeiitic, low-alkali basaltic dikes which cut the Archean rocks of northeastern Manitoba have yielded a paleomagnetic pole at 114°W, 28°N, α 95 = 12°. The material from nine sites was normally magnetized, and from one site, reversely...

...) a southern Indiana facies, 0 to more than 200 ft thick, comprising the highly fossiliferous, normal marine biozones, extending from outcrop at the Falls of the Ohio southwestward to far southwest Indiana and northward to cover about 20 counties; (2) a west-central Indiana facies, the Geneva Dolomite Member...

...P.-F. Bulard; B. Chamagne; G. Dardeau; J. Delteil; P. Gioan; J.-P. Ivaldi; F. Laval; J.-L. Perez; J. Polveche GeoRef, Copyright 2013, American Geosciences Institute. 1975 Alps basement Cenozoic Europe faults foliation fracture zones France genesis Maritime Alps Nice Arc normal...

... the piercement salt features. Collapse of overlying sediments into the salt-withdrawal area accompanied by an adjoining rise of salt establishes a force couple between collapse and salt rise. The tensional, or torsional, stress is relieved by normal faulting downthrown toward the center of the salt-withdrawal...

... m) thick, extension of the rock had formed a system of westward-dipping normal faults along which rhyolite porphyry dikes were intruded. Continued upward movement of the magma resulted in the formation of a nearly rectangular trapdoor of sedimentary rocks bounded by vertical faults. The trapdoor...

... of the withdrawal area. The sedimentary collapse caused normal faulting parallel with, and on, the flanks of the newly initiated basin structure. The faulting, when viewed in cross section, tends to assume a conical configuration nearly conforming to the cross-sectional outline of the basin. These faults...

...-trending right-shift force couple related to the northeast drift of the Colorado Plateau, and to vertical forces which led to the development of the Nacimiento uplift. The northwest-trending folds and the northeast-trending normal faults of the Rio Puerco fault zone formed in response to the right-shift...