Properties of Thrusts and Upper Bounds for the Size of Thrust Sheets
Published:January 01, 2004
Basic types of thrusts recognizable in many orogens include: (1) foreland fold-thrust belt (and accretionary complex) thrusts, (2) Type C crystalline thrust sheets that detach along the ductile- (plastic) brittle transition in either continental or oceanic crust, and (3) Type F (fold-related) crystalline thrust sheets that are generated beneath the ductile-brittle transition by plastically shearing the common limb between antiforms and synforms.
Spacing of thrusts in a foreland fold-thrust belt is determined by the thickness and shear strength of the dominant structural-lithic unit and by basement irregularities, facies changes, and the development of stress maxima that localize buckling instabilities....
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Thrust Tectonics and Hydrocarbon Systems
Thrust Tectonics and Hydrocarbon Systems resulted from an international conference at Royal Holloway University in London. The volume contains 33 chapters divided into four sections:Geodynamics of Thrust Systems, Analog Modeling of Thrust Systems, Fault-Related Folds in Thrust Systems,and Case Studies. These papers summarize recent advances in thrust studies and their application to hydrocarbon exploration and production.Key topics addressed include the application of the critically tapered Coulomb wedge model to thrust systems both in nature and in experiments, the interaction of surface proceses with thrust systems, basement-involved thrust systems and inversion, fault-related folds in thrust belts, and growth stratal development in thrust belts. Fold-and thrust belts described and discussed in this volume include the Alps, the Andes, the Apennines, the Appalacians, the Alice Springs Orogen in Australia, the Albanides, the Atlas in Morocco, the Canadian Cordillera and the Canadian Rocky Mountains, Kutei Basin, Kalimantan, the Himalayas, the New England Orogen, Papua New Guinea, and the Spanish Pyrenees, as well as depwater fold and thrust belts such as the Niger Delta and the Gulf of Mexico. Memoir 82 provides an in-depth look at thrust tectonics and hydrocarbon systems, and is a milestone publication as a major new examination of thrust fault systems.