منابع مشابه
Extensional tectonics in the Caledonides of southern Norway, an overview
The extensional collapse of the Scandinavian Caledonides resulted in rapid tectonic denudation of the orogen, exhumation of highand ultra-high-pressure metamorphic rocks and provided a structural template for the formation of Devonian supra-detachment sedimentary basins. The geometry and intensity of the extensional deformation show considerable variation vertically in the crustal section as we...
متن کاملModes of extensional faulting controlled by surface processes
We investigate the feedbacks between surface processes and tectonics in an extensional setting by coupling a 2-D geodynamical model with a landscape evolution law. Focusing on the evolution of a single normal fault, we show that surface processes significantly enhance the amount of horizontal extension a fault can accommodate before being abandoned in favor of a new fault. In simulations with v...
متن کاملGeology of the West Margin of the Shuswap Terrane near Sicamous Implications for Tertiary Extensional Tectonics
Recent field and geochronological investigations. in conjunction with LITHOPROBE seismic surveys, have led to the recognition of crust&scale, low to moderate-angle, Eocene extensional faults and shear ZOIIL‘S in the southern Omineca Belt. The present study focuses on documentation of the Eagle River fault, an extensional shear zone that delineates the western boundary of the Shuswap metamorphic...
متن کاملLate Mesozoic extensional tectonics in the North China block: a crustal response to subcontinental mantle removal?
– In the North China block, Cretaceous extensional tectonics is expressed by numerous syntectonic plutons bounded by ductile normal faults and several metamorphic core complexes (MCC). Cretaceous half-grabens filled by continental terrigenous deposits are widespread. The examples of MCC from South Liaoning Peninsula, Yiwulüshan, Hohhot as well as the Yunmengshan syntectonic pluton spread along ...
متن کاملRecent extensional tectonics on the Moon revealed by the Lunar Reconnaissance Orbiter Camera
Large-scale expressions of lunar tectonics—contractional wrinkle ridges and extensional rilles or graben—are directly related to stresses induced by mare basalt-filled basins1,2. Basin-related extensional tectonic activity ceased about 3.6 Gyr ago, whereas contractional tectonics continued until about 1.2 Gyr ago2. In the lunar highlands, relatively young contractional lobate scarps, less than ...
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ژورنال
عنوان ژورنال: Journal of Structural Geology
سال: 1982
ISSN: 0191-8141
DOI: 10.1016/0191-8141(82)90021-9