The Apennines are a retreating collisional belt where the foreland basin system, across large domains, is floored by subaerial forebulge unconformity developed due to uplift and erosion. This overlain diachronous sequence of three lithostratigraphic units made (a) shallow-water carbonates, (b) hemipelagic marls shales (c) siliciclastic turbidites. Typically, latter two have been interpreted reg...

the khushab anticline is located in the zagros fold-thrust belt in the lurestan. this anticline is affected by the balarud fault zone, which is a part of mountain front fault between the lurestan and dezful embayment zones. based on the measurement of the elements of fold style, this anticline is analyzed. according to these measurements, this anticline is a noncylindrical, asymmetrical and dis...

The European Alps are a mountain belt that is characterized by a series of discrete orogenic events, which have long been recognized. Despite the inherent episodic nature of orogenic evolution, the Alps have been continuously exhumed, mainly by erosion, but also by normal faulting. Since continental collision started in the late Eocene/Early Oligocene evidence for ongoing erosional exhumation h...

Regional metamorphism occurs in plate boundary zones. Accretionary orogenic systems form at subduction boundaries in the absence of continent collision, whereas collisional orogenic systems form where ocean basins close and subduction steps back and flips (arc collisions), simply steps back and continues with the same polarity (block and terrane collisions) or ultimately ceases (continental col...

The Paleo-Asian Ocean controlled the tectonic evolution of Northeast Asia and formed Karamaili Orogenic Belt in eastern Junggar basin. However, chronological constrain paleo-Karamaili remains unclear. In this study, we focused on sandstones Lower Jurassic Badaowan Sangonghe Formations Dongdaohaizi Depression, basin near orogenic belt. After detailed observations descriptions macroscopic feature...

Orogenic growth, characterized by formation and forward propagation of fold-thrust belts foreland basins, is predicted wedge models thrust systems. The growth the Nanpanjiang belt basin system Indosinian orogenic in southwestern South China remains poorly understood. development underappreciated due to few constraints on structural styles, kinematics ages. Surface cross sections, seismic profil...

introduction the area studied is located north of azna (lorestan province) in a small portion of the sanandaj – sirjan structural zone (mohajjel et al., 2003).this area is part of the zagros orogenic belt, formed by the opening and closure of neotethyan ocean. from ne to sw, it consists of three parallel tectonic regions: the orumieh-dokhtar magmatic belt, the sanandaj-sirjan structural zone an...

amplitudes of seismic waves decrease with distance according to anelastic properties of the earth and geometrical spreading. the attenuation of ground-motion amplitudes in the frequency domain is an important problem in engineering seismology. it is of particular practical interest in the regions such as zagros (iran). the zagros fold- thrust belt, as a part of alpine- himalayan orogenic belt i...

The Western Qinling orogenic belt (WQOB) is one of the most important prospective gold districts in China, with widely distributed Indosinian intermediate–acidic intrusions. Liziyuan Au deposit a representative northern WQOB, hosting several sections spatially associated igneous rocks. hosted by meta-sedimentary volcanic rocks Cambrian–Ordovician Group and Tianzishan monzogranite. Two periods, ...