Kontum block
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The Kontum block is a geological formation in Southeast Asia that was once part of the supercontinent Gondwanaland. It is believed to have rifted away from Gondwanaland during the Devonian Period, approximately 419 to 359 million years ago.1
The block later enlarged to form the Annamia block through the collision of at least two island arcs along its northeastern margin during the Paleozoic Era. The earlier island arc docked along what is now the Annamese Cordillera in northern Vietnam during the Devonian period or slightly before. A subsequent collision occurred along a suture zone further north, near the Ma River, during the early Carboniferous period, resulting in significant south-directed deformation and thrusting. Subduction along the western margin of the Annamia block during the Carboniferous to Permian periods led to extensive arc-related magmatism and mineralization.1
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AsiaTectonic frameworkā¦Sino-Korean) and Yangtze paraplatforms, the Kontum block (in Southeast Asia), and the North Tarim fragment (also called Serindia; in western China). The orogenic zones consist of large tectonic collages that were accreted around the continental nuclei. Recognized zones are the Altaids, the Tethysides (further subdivided into the Cimmerides and theā¦
Read Moreā¦Sino-Korean) and Yangtze paraplatforms, the Kontum block (in Southeast Asia), and the North Tarim fragment (also called Serindia; in western China). The orogenic zones consist of large tectonic collages that were accreted around the continental nuclei. Recognized zones are the Altaids, the Tethysides (further subdivided into the Cimmerides and theā¦
Read More- AsiaPaleozoic events in the Tethysides
The Yangtze paraplatform and the Kontum block are believed to have been parts of Gondwanaland during the early Paleozoic, but they rifted away from it sometime in the Devonian Period (about 419 to 359 million years ago). Two other fragments in southeastern China, the Huanāan and Dongnanya, have basements thatā¦
Read MoreThe Yangtze paraplatform and the Kontum block are believed to have been parts of Gondwanaland during the early Paleozoic, but they rifted away from it sometime in the Devonian Period (about 419 to 359 million years ago). Two other fragments in southeastern China, the Huanāan and Dongnanya, have basements thatā¦
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