منابع مشابه
Very high-pressure orogenic garnet peridotites.
Mantle-derived garnet peridotites are a minor component in many very high-pressure metamorphic terranes that formed during continental subduction and collision. Some of these mantle rocks contain trace amounts of zircon and micrometer-sized inclusions. The constituent minerals exhibit pre- and postsubduction microstructures, including polymorphic transformation and mineral exsolution. Experimen...
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Erosion of orogenic mountain ranges exhumes deeply buried rocks and controls weathering, climate, and sediment production and transport at a variety of scales. Erosion also affects the topographic form and kinematics of orogens, and it may provide dynamic feedbacks between climate and tectonics by spatially focused erosion and rock uplift. Thermochronology measures the timing and rates at which...
متن کاملThe Mohorovicic Discontinuity and the Orogenic Cycle
The following report, by Peter J. Wyllie, Department of Geochemistry and Mineral ogy, Pennsylvania State University, is based on a paper "presented by the author at the Second Western National Meeting of the American Geophysical Union, held at Stan ford University, December 1962. A similar, 'more-detailed version of this paper has been published in the Journal of Geophys ical Research, Augus...
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Separation of the anterior layer of the lens capsule, also known as true exfoliation and capsular delamination, has become an increasingly rare clinical finding. Although its pathogenesis is not precisely known, the condition has been associated with age, trauma, and exposure to toxins and/or to thermal radiation. An association with occupational infrared radiation exposure was accepted after E...
متن کاملLate orogenic exhumation of the Variscan high‐grade units
[1] The current structure of the South Armorican Domain in the French Variscan Belt, provides an excellent record of the late orogenic evolution, as documented by the complex interactions between extensional structures and partial melting. In the Golfe du Morbihan, the South Brittany Migmatite Belt (SBMB), tectonically overlain by non‐melted metamorphic units, was studied by combined structural...
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ژورنال
عنوان ژورنال: Geology
سال: 2011
ISSN: 1943-2682,0091-7613
DOI: 10.1130/focus022011.1