Roots of the Labradorian orogen in the Grenville Province in southeast Labrador: evidence from marine, deep-seismic reflection data

Article Abstract:

Marine, deep-seismic reflection data from the Lithoprobe Eastern Canadian Shield Onshore-Offshore Transect project, gravity and geodynamic models and offshore-onshore geologic data were combined to explain the crustal structure of Grenville Province, Labrador. A single, short-lived rifting at approximately 1700 Ma and a deposition of supracrustal rocks prior to the accretion of an early Labradorian arc against pre-Labradorian Laurentia at around 1665 Ma were proposed to account for the deep crustal configuration. No abrupt effect resulted from later orogeneses in modifying this geometry.

Models, Usage, Labrador, Formations (Geology), Geological formations, Seismic reflection method, Seismic reflection surveying, Grenville, Ontario

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Late Cenozoic tectonic evolution of the southern Chinese Tian Shan

Article Abstract:

Structural, sedimentological, magnetostratigraphic and 40Ar/39Ar thermochronological investigations in the southern Chinese Tian Shan revealed that its Late Cenozoic southern Tian Shan thrust belt may be segregated into four segments based on the style of deformation. These include the Kashi-Aksu imbricate thrust system, the baicheng-Kuche fold and thrust sytem, the Korla right-slip transfer system and the Lop-Nor thrust system.

China, Thrust faults (Geology), Thrust faults, Tien Shan

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