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1 edition of The metamorphic and structural evolution of the Kheis Tectonic Province found in the catalog.

The metamorphic and structural evolution of the Kheis Tectonic Province

The metamorphic and structural evolution of the Kheis Tectonic Province

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Published by University of Cape Town in Cape Town .
Written in

    Subjects:
  • Geology - South Africa

  • Edition Notes

    11

    The Physical Object
    Pagination215 p.
    Number of Pages215
    ID Numbers
    Open LibraryOL21992626M

      The Evolution of the Himalaya • The Himalaya are products of 55 million years of tectonic compression and structural deformation. • Examination of geochronologic, structural, petrologic and sedimentary data from various parts of the Himalaya indicates that at least five major episodes or phases were milestones in the geologic history of. Stettler EH, Prinsloo J, Hauger ME () A geophysical transect between Avondale on the Kheis tectonic province and Keimoes on the Namaqua Metamorphic Province, South Africa. S Afr Geophys Rev –93 Google Scholar.

    Metamorphic terranes comprised of blueschist facies and regional metamorphic (Barrovian) rocks in apparent structural continuity may represent subduction complexes that were partially overprinted during syn- to post-subduction heating or may be comprised of unrelated tectonic slices. Topics: subduction tectonic and morphological evolution of convergent margin, evolution of orogenic belt and exhumation of deep metamorphic rocks, dynamic topography, trench migration and back-arc deformation, mantle convection, volcanism and fluid circulation in the crust.

    Tectonic setting and variations with depth of some Cretaceous and Cenozoic structural and magmatic systems of the western United States / Warren Hamilton --Tectonic significance of high-pressure plutonic rocks in the Western Cordillera of North America / E-an Zen --Pb isotopic evidence for the formation of Proterozoic crust in the southwestern.   This metamorphic rock forms in two different ways. In the first way, sandstone or chert recrystallizes resulting in a metamorphic rock under the pressures and temperatures of deep burial. A quartzite in which all traces of the original grains and sedimentary structures are erased may also be called metaquartzite. This Las Vegas boulder is a.


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The metamorphic and structural evolution of the Kheis Tectonic Province Download PDF EPUB FB2

Get this from a library. The metamorphic and structural evolution of the Kheis Tectonic Province. [Gert Claus-Jurgen Schlegel]. The Mogok Metamorphic Belt is a north–south-aligned belt of mainly high-grade metamorphic rocks and granites that extends the length of Burma (Myanmar) along the western margin of the Sibumasu block from the Andaman Sea to the East Himalayan (Namche Barwa) Syntaxis (Figs & ).Cited by: The contacts between Archean cratons and adjacent Archean gneiss terrains involve either sharp or gradational structural-metamorphic transition zones (e.g., De Wit and Ashwal, ).In terms of rock types and age, the gneiss terrains are commonly comparable to the cratons, and they have been variably interpreted as: (1) lateral equivalents of the craton that have been involved in subsequent.

The Paleoproterozoic tectono-metamorphic evolution of the pre-Athabasca basement (∼ Ga) within the Wollaston–Mudjatik Transition Zone (WMTZ) (Saskatchewan, Canada) has been characterized using both exposed basement and drill cores Cited by: The proximity of the Kheis orogenic front, the protracted tectonic history of the area, a recently-resolved local structural framework and an emerging set of literature on superimposed hypogene.

Metamorphic rock - Metamorphic rock - Structural features: Metamorphic rocks are often intimately related to large-scale (kilometres of tens of kilometres) structural features of Earth. Such features include folds, nappes, and faults with a wide variety of geometries.

In many cases, the correlation of metamorphic isograds and their position in the structure implies a genetic relationship. G.C.J. SchlegelContribution to the metamorphic and structural evolution of the Kheis Tectonic Province, northern Cape, South Africa S.

Afr. Geol., 91 (), pp. Google Scholar. Minerals, an international, peer-reviewed Open Access journal. Peralkaline granitoid and alkaline mafic gneisses have recently been discovered within the Halambu Formation, near the northern margin of the ~ Ma Natal Structural and Metamorphic Province.

These findings confirm that the Kheis Subprovince contains no Eburnean orogenic signature and is, in fact, an integral part of the Namaqua Province.

The post-tectonic Koras Group lies entirely within the subprovince and its tectonic signature. Earth’s mantle convection, which facilitates planetary heat loss, is manifested at the surface as present-day plate tectonics1. When plate tectonics emerged and how it. Metamorphic evolution and tectonic implications of the metamorphic rock series in the Xilinhot-Linxi area, Inner Mongolia.

/ Li, Y. Amsterdam, p. Research output: PhD Thesis › PhD Thesis - Research VU, graduation VU. Contribution to the metamorphic and structural evolution of the Kheis Tectonic Province, (). Die geologie rondom spesiale verwysing na die verband tussen die Namakwalandse Mobiele Gordel en Matsap-Kheisgesteentes.

The tectonic evolution of this region can be summarized by three generalized episodes: (i) stretching and crustal extension during Triassic-Jurassic and Early Cretaceous periods, which created half-graben structures that accommodated more than 6 km of volcanic and sedimentary basin fill, (ii) Late Cretaceous contraction and tectonic inversion.

structural data and pressure-temperature-time evolution the metamorphic complex can be subdivided into four units interpretable as nappes: a high-grade greenschist-facies unit (Pitajones unit), a high-pressure tectonic mélange (Gavilanes unit), high-pressure amphibolites (Yayabo unit) and – tectonically overlying - low-pressure.

provinces have been most studied, particularly using mod-ern zircon U–Pb techniques, hence the greater number of emplacement and metamorphic dates reported. Zircon-based investigations within the Gordonia and Kheis sub-provinces are notably limited and modern U–Pb dating of lithologies in the Richtersveld sub-province is also not available.

The geology of Myanmar is shaped by dramatic, ongoing tectonic processes controlled by shifting tectonic components as the Indian plate slides northwards and towards Southeast Asia. Myanmar spans across parts of three tectonic plates (the Indian Plate, Burma microplate and Shan Thai Block) separated by north-trending the west, a highly oblique subduction zone separates the offshore.

The structural and metamorphic evolution of Cretaceous high-P granulites, Fiordland, New Zealand Nathan R. Daczko Submitted in fulfulment of the requirements for the degree of Doctor of Philosophy The University of Sydney School of Geosciences Division of Geology and Geophysics Edgeworth David Building (F05) Sydney, NSW, Australia.

(2) We combine field relations, structural geology, petrology, thermobarometry and geochronology to interpret the tectonic evolution of the Everest Himalaya. (3) Integrated studies of metamorphic petrology and structural geology constitute a powerful tool for understanding the tectonic evolution of the inner zones of orogens.

Geosciences, an international, peer-reviewed Open Access journal. The Mogok Metamorphic Belt is a north–south-aligned belt of mainly high-grade metamorphic rocks and granites that extends the length of Burma (Myanmar) along the western margin of the Sibumasu block from the Andaman Sea to the East Himalayan (Namche Barwa) Syntaxis (Figs & ).

The Mogok metamorphic rocks host some of the world's finest rubies and sapphires, the former mainly .A tectonostratigraphic province is defined by Stockwell et al, () as a large area of contiguous structural fabric with well-defined boundaries which formed during a particular, geochronologically defined, tectono-metamorphic event.

The Namaqua-Natal Province is considered to contain igneous and metamorphic rocks formed or metamorphosed.Abstract. At least 12 granulite occurrences, ranging in size from a few 10’s tokm2, are exposed in the Archean Superior Province. Primary lithotectonic subdivision of the Superior Province into linear volcano-plutonic and metasedimentary gneiss belts has led to interpretation of these components as magmatic arcs and accretionary prisms respectively, assembled in the interval between.