Biostratigraphic and paleogeographic significance of a palynological assemblage from the Middle Devonian Ulusubasite Formation, eastern Junggar Basin, Xinjiang, China

Zhu, Hongtao; Wicander, Reed; Marshall, J.

doi:10.1016/j.revpalbo.2008.04.010

Cited by 14 publications

(8 citation statements)

References 25 publications

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“…Marine organisms, such as corals and brachiopods, occur only in thin limestone intervals of the Hefeng Formation deposited during the early Eifelian (Xu, 1991;Ma et al 2009). Several hundred kilometers farther southeast, an abundant marine fauna is reported by Zhu et al (2008) within the lower and middle part of the Ulusubasite Formation of the Zhifang section (eastern Junggar Basin, China). Marine and terrestrial fossils indicate an Eifelian age for this unit (Hou et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Devonian deposits of the Baruunhuurai Terrane, western Mongolia (IGCP 596 Field Workshop)

Kido¹,

Suttner²,

Waters³

et al. 2013

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analysis, they ranked the F/F event as the fourth most ecologically severe crisis in the Phanerozoic of the six events ranked. All the analyses conclude that the Middle and Late Devonian was a time of biotic crisis that spanned many millions of years. Middle Devonian events may not have reached the ecological severity of the F/F event, but the G/F event was a significant extinction event for echinoderms and bryozoans and for the replacement of endemic marine faunas by more cosmopolitan ones (McGhee et al. 2013). The Middle Devonian was the time of rapidly increasing diversification of tree-like vegetation on land, the development of root-systems and the formation of soil (Algeo and Scheckler, 1998; Stein et al. 2007), which dramatically changed atmospheric CO 2 and climates. Although many Devonian-Carboniferous sections contain evidence of these extinction and anoxic events, we have been conducting fieldwork in northwestern China and now Mongolia not only to expand the global scale of such studies, but also to examine stratigraphic sections deposited on volcanic island arc systems (

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Section: Introductionmentioning

confidence: 99%

Devonian deposits of the Baruunhuurai Terrane, western Mongolia (IGCP 596 Field Workshop)

Kido¹,

Suttner²,

Waters³

et al. 2013

Episodes

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“…2.6) and V. scurrus (Naumova) McGregor & Camfield (Fig. 2.4) as well as abundant patinate types, which do not appear before the Givetian Stage (Turnau & Racki 1999;Zhu et al 2008). The representatives of the thick-walled camerate genus Geminospora such as G. lemurata Balme emend.…”

Section: Stratigraphymentioning

confidence: 99%

Middle Devonian palynomorphs from southern Moravia: an evidence of rapid change from terrestrial deltaic plain to carbonate platform conditions

Vavrdová¹,

Dašková²

2011

Geologica Carpathica

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Dispersed fossil miospores and acritarchs have been recovered from the subsurface pelites in the Uhřice-1 borehole, southern Moravia. Spores of ferns, sphenopsids and lycopods with rare marine microplankton (acritarchs and chitinozoans) cysts indicate a predominantly continental environment with a limited marine influence. Dispersed miospores with cysts of unicellular marine microplankton confirm the Middle Devonian, most probably early Givetian (AD lem) age of marine transgression in southern Moravia. Thermal alteration of palynomorphs shows average values, with TAI ranging from 2+ to 3+, corresponding to 60-70 °C.

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“…8). According to Zhu et al (2008) and Marshall et al (2017), the latter distinctive miospore is well known from the Eifelian-Famennian interval, not only from many localities in China (Gao, 1988(Gao, , 1989 but also from Australia and Euramerica (see McGregor and Playford, 1993;Hashemi and Playford, 2005).…”

Section: Palynostratigraphy 521 Bulongguoer Sectionmentioning

confidence: 99%

Environment and Age of the Upper Devonian–Carboniferous Zhulumute and Hongguleleng Formations, Junggar Basin, NW China: Ichnological and Palynological Aspects

Stachacz

Kondas

Filipiak

et al. 2021

Acta Geologica Sinica (Eng)

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Two Upper Devonian to Lower Carboniferous sections, namely the Bulongguoer and Haer (Gennaren area) in the Junggar Basin, Central Asian Orogenic Belt, in northwestern China were examined with regard to ichnology and palynology. The deposits of the Hongguleleng Formation and Namu Member of the Heishantou Formation, respectively, are mostly unbioturbated or poorly bioturbated, with poorly diversified trace fossils, which indicate unfavourable conditions for the burrowing benthic community during the Late Devonian and Early Carboniferous. The main factor governing the growth of the bioturbating population was the rapid sedimentation of fine‐grained, volcanic material documented as tempestites, which buried the benthic fauna. In the Bulongguoer section, the presence of miospores Teichertospora torquata and Grandispora gracilis enabled identification of the broad Teichertospora torquata‐Grandispora gracilis Miospore Zone from the transitional Frasnian/Famennian interval. More accurate identification of palynostratigraphical levels (DE and CZ Miospore zones) is only tentative. On the basis of palynofacies analysis, samples from the lower Bulongguoer section indicate deposition in more proximal conditions, whereas samples from the top of the section indicate deposition in a more distal environment. In the Haer section, only a general biostratigraphic indication for the Tournaisian was possible, owing to poor preservation of organic matter.

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Biostratigraphic and paleogeographic significance of a palynological assemblage from the Middle Devonian Ulusubasite Formation, eastern Junggar Basin, Xinjiang, China

Cited by 14 publications

References 25 publications

Devonian deposits of the Baruunhuurai Terrane, western Mongolia (IGCP 596 Field Workshop)

Devonian deposits of the Baruunhuurai Terrane, western Mongolia (IGCP 596 Field Workshop)

Middle Devonian palynomorphs from southern Moravia: an evidence of rapid change from terrestrial deltaic plain to carbonate platform conditions

Environment and Age of the Upper Devonian–Carboniferous Zhulumute and Hongguleleng Formations, Junggar Basin, NW China: Ichnological and Palynological Aspects

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