Depositional model of Early Permian reef-island ocean in Eastern Kunlun

Wang, Yongbiao; Xu, Guoce; Lin, Qixiang; Gong, Shuyun

doi:10.1007/bf02907093

Cited by 15 publications

(11 citation statements)

References 2 publications

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“…6). Previous studies have shown that fusulinid fossils are common within shallow, Middle Permian seamount carbonates of this area (Wang et al, 2001), while purple radiolarian chert is widespread in deep-water basins between the reef islands (Zhang et al, 2000). Early Triassic ooids containing fusulinid fragments suggest a shallow-water origin on top of the seamounts, where exhumed Permian fusulinid fossils could serve as nuclei for ooids.…”

Section: Geological Age Of Anachronistic Facies Carbonatesmentioning

confidence: 98%

“…Meanwhile, Zhang et al (2000) discovered Early-Middle Permian radiolarian fossils indicative of deep basinal facies in the A'nyêmaqên region, suggesting the existence of a deep ocean basin in this area. The co-existence of shallow-water reef islands and a deep ocean basin point to an area dotted with many seamount carbonate platforms ("poly-islands ocean") (Wang et al, 2001).…”

Section: Geological Settingmentioning

confidence: 99%

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Lower Triassic anachronistic facies capping the Qinghai-Tibet Plateau seamount: Implications for the extension of extraordinary oceanic conditions deep into the interior Tethys Ocean

Deng

Wang

Woods

et al. 2015

Global and Planetary Change

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Section: Geological Age Of Anachronistic Facies Carbonatesmentioning

confidence: 98%

Section: Geological Settingmentioning

confidence: 99%

Lower Triassic anachronistic facies capping the Qinghai-Tibet Plateau seamount: Implications for the extension of extraordinary oceanic conditions deep into the interior Tethys Ocean

Deng

Wang

Woods

et al. 2015

Global and Planetary Change

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“…Sandstone or conglomerate is overlain by bioclastic limestone and reef limestone from succession of reef-island facies at Naerzha, Huashixia, Madoi County, Qinghai, which indicates a shallowwater current turbulent condition in favor of formation of the bioclastic carbonate basement [18] . Those are perfectly correlated with those of the studied area.…”

Section: Permian Palaeogeography Frameworkmentioning

confidence: 99%

“…Mángano and Buatois [15,16] described sedimentation in shallow sea water as well as in slope-apron related to volcanism in the Ordovician Suri Formation in Famatina Range, northwest Argentina. The Middle Permian seamount within ocean basin in Bayanhar and its neighboring region was systemically analyzed by Wang et al [17][18][19] and three structure-types and five evolution stages were recognized, and depositional models of reef-island sea were established. Petterson and Trelor [20] concentrated on palaeogeographical model of the volcanism within island-arc, back-arc-basin, and intraplate tectonic settings based on studying volcanostratigraphy sequences in the Kohistan arc, North Pakistan.…”

mentioning

confidence: 99%

Depositional model of Permian Luodianian volcanic island and its impact on the distribution of fusulinid assemblage in southern Qinghai, Northwest China

Niu

Wang

et al. 2008

Sci. China Ser. D-Earth Sci.

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Pan-riftizational tectonic activity reached climax at Luodianian (Permian) in the East Tethyan Domain,Qinghai-Tibet Plateau. Because of eruptive volcanics and influence of terrigenous materials, a complex volcanic-sedimentary landform formed on the sea floor in southern Qinghai. Four sedimentary facies types were recognized based on detailed field mapping. Spatially, platform facies volcanic-limestone type was located at the center belt approximately trending NWW, surrounded by shallow water slope facies tuff/tuffite type at the two flanks and deep water slope facies breccia/calcirudite at the most outside. The depression facies sandstone-mudstone type, which comprised mainly mudstone, deposited between volcanic islands (platform facies volcanic-limestone type). Based on the field mapping and stratigraphic section data, seven rift-related sedimentary facies were recognized and a depositional model for volcanic island was proposed. It is revealed that some volcanic island chain formed quickly and intermittently in the Qamdo Block during violent eruption, and small carbonate reef, shoal, platform occurred above or on edge of volcanic island, and some slope sedimentary facies surrounded volcano island chain during dormant period of volcanic activities. Three types of fusulinid assemblages were distinguished in the carbonate rocks, which deposited in varied positions of a palaeo-volcanic island: (1) Misellina-Schwagerina assemblage occurred above or on edge of volcanic island, (2) Parafusulina assemblage was located at restricted depression facies among volcanic islands or carbonate platform, and (3) the reworked Pseudofusulina-Schwagerina assemblage occurred at slope facies near margin of volcanic island, which originally deposited in the shallow-water carbonate platform, then collapsed along the volcanic island margin with fusulinid-bearing grain-supported carbonate conglomerate or calcirudite, and finally re-deposited on the deeper slope. The sedimentary sequence resulting from calm shallow water was deposited at the interior of the Qamdo Block from the Devonian to early Early Permian. At the beginning of the peak period of activity of pan-riftzation (Luodianian), alternate volcanic island and shallow marine environment within continent crust came into being. Uniform and stable shallow-water carbonate platform was formed during the Xiangboan. This suggested that the activity of rift basin was evidently weakened. Subsequently the instability of the basin appreciably increased with the occurrence of basalt in late Kuhfengian. At last the whole Qamdo Block turned into the closure period of rift during the Late Permian.volcanic rocks, sedimentary facies, depositional model, fusulinid, Permian, Qinghai

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“…Such examples are known from geological periods and modern times (e.g. Permian reefs at Lichuan in western Hubei [4], reefs extending along the Animaqing-Alka Mountains in the East Kunlun Mountains [14][15][16][17][18] and the modern Great Barrier Reef in Australia). Geological reefs may be used to restore tectonic and geographical variations.…”

Section: Tectonic Significance Of Reef-linksmentioning

confidence: 99%

Late Paleozoic reefs and their significance for tectonics and oil-gas exploration in the Hinggan-Inner Mongolia area

Shugang

Yong-sheng

Wang

et al. 2011

Sci. China Earth Sci.

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Many reefs of the Late Paleozoic have been discovered recently in the Hinggan-Inner Mongolia area. These reefs clearly are geographically extensive, and possess distinctive features and well-developed reef-facies. They have been found to contain five reef-building communities and were constructed in four periods. Colonial coral-algal reefs at Aohan and Chifeng represent a warm shallow-sea in the Carboniferous. Different reefs in the Xiwu Banner were formed in three periods: early Late Carboniferous, late Late Carboniferous and Early Permian. These reefs were built in warm sea conditions. Their buildup types include colonial coral frameworks, algae-buildings and lime-mud mounds. Bryozoan reefs in the Zhalaite and Dongwu banners were built in the late Middle Permian and thrived in a cold shallow-sea. All reefs grew independently on two kinds of sedimentary platforms, carbonate and carbonate-clastic mixed platforms. Four reef-forming periods occurred later from south to north, along a collisional course between the North China Plate and the Siberian Plate. These reefs can be arranged into three 'reef-links' or reef zones that extend along plate margins. Among these, the Aohan-Chifeng reef-link indicates a northern margin of the North China Plate, the Zhalaite-Dongwu reef-link marks a southern margin of the Siberian Plate, and the Xiwu-Beishan reef-link reflects the former existence of some inter-plates. The strata of each reef-facies are thick and contain rich asphalt deposits. Overlapping and heteropic layers are very thick and contain dark oil/gas-rich horizons; TOC analyses verify that most of these are good hydrocarbon source rocks. This study shows that the study area is an excellent candidate for oil-gas exploration. reefs, Late Paleozoic, Hinggan-Inner Mongolia fold-zone, oil-gas exploration Citation:Tian S G, Zhang Y S, Wang J T, et al. Late Paleozoic reefs and their significance for tectonics and oil-gas exploration in the Hinggan-Inner Mongolia area.

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Depositional model of Early Permian reef-island ocean in Eastern Kunlun

Cited by 15 publications

References 2 publications

Lower Triassic anachronistic facies capping the Qinghai-Tibet Plateau seamount: Implications for the extension of extraordinary oceanic conditions deep into the interior Tethys Ocean

Lower Triassic anachronistic facies capping the Qinghai-Tibet Plateau seamount: Implications for the extension of extraordinary oceanic conditions deep into the interior Tethys Ocean

Depositional model of Permian Luodianian volcanic island and its impact on the distribution of fusulinid assemblage in southern Qinghai, Northwest China

Late Paleozoic reefs and their significance for tectonics and oil-gas exploration in the Hinggan-Inner Mongolia area

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