Composition, Provenance, and Tectonic Setting of the Southern Kangurtag Accretionary Complex in the Eastern Tianshan, NW China: Implications for the Late Paleozoic Evolution of the North Tianshan Ocean
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10425616" target="_blank" >RIV/00216208:11310/19:10425616 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=koKKwUyaFh" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=koKKwUyaFh</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2018TC005385" target="_blank" >10.1029/2018TC005385</a>
Alternative languages
Result language
angličtina
Original language name
Composition, Provenance, and Tectonic Setting of the Southern Kangurtag Accretionary Complex in the Eastern Tianshan, NW China: Implications for the Late Paleozoic Evolution of the North Tianshan Ocean
Original language description
The Kangurtag belt in the Eastern Tianshan, connecting the Dananhu Arc with the Central Tianshan Arc, contains diagnostic rocks of accretionary origin, and thus provides key information about the evolution of the North Tianshan Ocean. The Southern Kangurtag belt is composed of two types of melange. Type I melange consists of Enriched Mid-Ocean Ridge Basalt-type pillow basalts, draped by biohermal limestones and carbonate-siliceous sediments of a slope facies, and siliceous argillites from a hemipelagic-pelagic environment that together make up a seamount assemblage. In Type II melange, Normal Mid-Ocean Ridge Basalt and ribbon cherts were dismembered and entrained in a clastic matrix, showing a "block-in-matrix" structure. Detrital zircons of four sandstones from Devonian and Carboniferous strata within the melanges have a predominant age population of 410-430 Ma and a distinct Proterozoic cluster around 1.4-1.6 Ga. The epsilon Hf(t) values of Phanerozoic zircons range from -25.1 to +8.6. Such age patterns, typical of the Central Tianshan Arc, and the Hf isotopic data indicate that these sedimentary successions were deposited on the northern margin of the Central Tianshan Arc. The youngest detrital zircon age of 317 Ma provides an upper limit for the time of formation of the Southern Kangurtag accretionary complex. Therefore, we suggest that the Southern Kangurtag belt comprises an accretionary complex that developed during southward subduction of the North Tianshan Ocean beneath the Central Tianshan Arc. This subduction began in the Early Ordovician and may have lasted until the Late Carboniferous-Permian.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Tectonics
ISSN
0278-7407
e-ISSN
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Volume of the periodical
38
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
24
Pages from-to
2779-2802
UT code for WoS article
000497850300010
EID of the result in the Scopus database
2-s2.0-85070493609