Tectonics
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Tectonic evolution of the central Annapurna Range, Nepalese HimalayasThe metamorphic core of the Himalayan orogen, or Greater Himalayan sequence, is a northward tapering prism bound at the bottom by a N dipping family of thrust faults (the Main Central thrust system) and at the top by a N dipping family of normal faults (the South Tibetan detachment system). Research in the central Annapurna Range of Nepal demonstrates a close temporal and spatial associati... ...
Tectonics - Tập 15 Số 6 - Trang 1264-1291 - 1996
Crustal thickening leading to exhumation of the Himalayan Metamorphic core of central Nepal: Insight from U‐Pb Geochronology and 40Ar/39Ar ThermochronologyNew and published U‐Pb geochronology and 40 Ar/39 Ar thermochronology from footwall and hanging wall rocks of a segment of the South Tibetan detachment system exposed in the Annapurna area of central Nepal Himalaya bring additional constraints on the timing of metamorphism, crustal thickening, and normal faulting resulting in exhumation of the Himala... ...
Tectonics - Tập 20 Số 5 - Trang 729-747 - 2001
Kinematics, topography, shortening, and extrusion in the India‐Eurasia collisionWe examine the problem of partitioning between shortening and extrusion in the India‐Asia collision since 45 Ma. We compute the amount of shortening expected from the kinematics of India's motion with respect to Eurasia, using the reconstruction at collision time to put bounds on the possible amounts of surface loss within Greater India and within Eurasia. We then compute the amounts of su... ...
Tectonics - Tập 11 Số 6 - Trang 1085-1098 - 1992
Extension in the Tyrrhenian Sea and shortening in the Apennines as result of arc migration driven by sinking of the lithospherePreviously proposed models for the evolution of the Tyrrhenian basin‐Apenninic arc system do not seem to satisfactorily explain the dynamic relationship between extension in the Tyrrhenian and compression in the Apennines. The most important regional plate kinematic constraints that any model has to satisfy in this case are: (1) the timing of extension in the Tyrrhenian and compression in ... ...
Tectonics - Tập 5 Số 2 - Trang 227-245 - 1986
Active tectonics in Eastern Lunana (NW Bhutan): Implications for the seismic and glacial hazard potential of the Bhutan HimalayaPaleoseismological investigations, brittle fault analysis, and paleostrain calculations combined with the interpretation of satellite imagery and flood wave modeling were used to investigate the seismic and associated glacial hazard potential in Eastern Lunana, a remote area in NW Bhutan. Seismically induced liquefaction features, cracked pebbles, and a surface rupture of about 6.8 km leng... ...
Tectonics - Tập 25 Số 3 - 2006
Thrust belt development in the central Apennines (Italy): Northward polarity of thrusting and out‐of‐sequence deformations in the Gran Sasso ChainThe Lazio‐Abruzzi carbonate platform overrides the outermost sectors of the foreland fold and thrust belt of the central Apennines of Italy along an arcuate thrust front, which swings from E‐W to NNW‐SSE orientation. The E‐W striking, north verging thrust faults of the Gran Sasso cut in their footwall the N‐S oriented, east verging imbricates of the Marche thrust belt and the adjacent Adri... ...
Tectonics - Tập 10 Số 5 - Trang 904-919 - 1991
Pre‐Neogene evolution of the Western Carpathians: Constraints from the Bochnia‐Tatra Mountains section (Polish Western Carpathians)On the basis of field studies and subsurface data, this first balanced transect crosses most of the Carpathian foreland basin and the entire Polish Western Carpathian thrust units (Outer flysch nappes, Pieniny Klippen Belt, and Inner Carpathian Tatric thrust sheets). It shows that (1) me Outer Carpathians are made up of several flysch units whose internal structure is strongly controlled b... ...
Tectonics - Tập 14 Số 4 - Trang 855-873 - 1995
Tectonic history of the Barberton greenstone belt, South Africa: 490 million years of Archean crustal evolutionRocks of the 3570–3080 Ma Barberton greenstone belt record a geological history of at least 490 million years (m.y.), and were affected by regional thermal perturbations for over 1500 m.y. Small tectonic wedges of 3570–3511 Ma schistose tonalite are the oldest rocks yet recognized, but little is known about their tectonothermal history. The earliest, well‐recognized tectonothermal events (... ...
Tectonics - Tập 13 Số 4 - Trang 983-1005 - 1994
Felsic igneous rocks within the 3.3‐ to 3.5‐Ga Barberton Greenstone Belt: High crustal level equivalents of the surrounding Tonalite‐Trondhjemite Terrain, emplaced during thrustingFelsic igneous rocks within the circa 3.5‐Ga ophiolitic Onverwacht Group of the Barberton greenstone belt have traditionally been mapped as recurring volcanic units within a continuous stratigraphic succession. These felsic units have been interpreted as part of several mafic to felsic volcanic cycles making up this succession. Our field and geochemical data show that the felsic igneous ro... ...
Tectonics - Tập 6 Số 5 - Trang 529-549 - 1987
Early Jurassic Rifting of the Arabian Passive Continental Margin of the Neo‐Tethys. Field Evidence From the Lurestan Region of the Zagros Fold‐and‐Thrust Belt, IranAbstract The Arabian passive margin formed at the southern margin of the Neo‐Tethys ocean during the breakup of Pangea. In the Lurestan region of the Zagros mountain belt, the deformed Arabian continental paleo‐margin can be reconstructed as originally consisting of distinct crustal domains, including a proximal sector and a distal continental ribbon, separated by a... ...
Tectonics - Tập 37 Số 8 - Trang 2586-2607 - 2018
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