1,721,065 research outputs found
Paleozoic to Cenozoic tectonic evolution of the boundary between Wilson and Bowers Terranes in northern Victoria Land (Antarctica): structural evidences from the Lanterman Range
No full textTectonic evolution at the boundary between the Wilson and Bowers Terranes (Northern Victoria Land, Antarctica): Structural evidence from the Mountaineer and Lanterman Ranges
No full textThe metaconglomerates of the eastern Lanterman Range (northern Victoria Land, Antarctica): new constraints for their interpretation
No full textHighly deformed metaconglomerates, mafic to felsic in composition, characterize the eastern Lanterman Range (northern Victoria Land, Antarctica). In the literature the mafic and felsic metaconglomerates are known as Husky Conglomerate and Lanterman Conglomerate respectively. They occurin a 25 km long strip along the Lanterman Fault, which is a major tectonic boundary between the Wilson and the Bowers terranes. New field observations show that there is a gradual transition from mafic to felsic metaconglomerates: this supports a stratigraphical continuum from Husky to Lanterman Conglomerate, and indicates that they belong to the same sedimentary succession. Structural analysis indicates that Husky and Lanterman conglomerates suffered the same structural evolution. From all these evidences, there is no reason to distinguish two types of metaconglomerates, apart from the diversity in the lithological features. However the two terms "Husky Conglomerate" and "Lanterman Conglomerate" can be still used to refer to the mafic and felsic facies of the same sedimentary succession. On the basis of their lithology the Husky Conglomerate can be derived from the Glasgow volcanic are, whereas the felsic clasts of the Lanterman Conglomerate may be derived from a continental basement below the Glasgow are or from a continental block bounding the Bowers trough
New constraints for the stratigraphic and structural interpretation of the metaconglomerate belt from eastern Lanterman Range (northern Victoria Land, Antarctica)
No full textTectonic evolution at the boundary between the Wilson and Bowers Terranes (northern Victoria Land, Antarctica): structural evidence from the Mountaineer and Lanterman Ranges
No full textAnalisi comparata dell'evoluzione strutturale delle Unità tettoniche tra il Gruppo di Voltri e la Linea Levanto-Ottone.
No full textModelling of plagiogranite genesis and implications for the evolution of the Ligurian-Piedmont oceanic basin (Ligurian Alps, Italy)
No full textEvidence for paleo-seismic cycles in carbonated peridotite: microstructural analysis of carbonated-coated grains in fault damage zones (Voltri Massif, Ligurian Alps)
No full textFirst finding of syntectonic gold mineralization in northern Victoria Land (Antarctica): A clue for the Paleo-Pacific margin of Gondwana
No full textLate orogenic tectonics in the Ligurian Alps (Italy): constraints from syntectonic sedimentary deposits at the top of an exhumed plate interface
No full textThis new map at 1:25,000 scale covers an area in the Western Alps (Italy), where the HP metamorphic basement is covered by a (predominantly clastic) late- and post-orogenic upper Eocene-lower Miocene cover. This provides unequivocal evidence that exhumation of the metamorphic units was accomplished by the lower Oligocene. The basement is made up of tectonic units with different metamorphic peaks that coupled during the exhumation path. Both basement and cover are affected by long-wavelength, asymmetric folds and thrust faults with top-to-E-NE vergence; this deformation phase has long been interpreted as linked to the rotation of the Corsica-Sardinia block and contemporary opening of the Liguro-Balearic basin and beginning of the Apennine orogeny. We particularly investigated some of these structures that crop out in the mapped area to give further constraints on their distribution, type and kinematics and to frame them in a larger picture of left-hand strike-slip tectonics
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