Stratigraphy, biostratigraphy and C-isotopes of the Permian–Triassic non-marine sequence at Dalongkou and Lucaogou, Xinjiang Province, China

Metcalfe, Ian; Foster, C.B.; Afonin, Sergey; Nicoll, Robert S.; Mundil, Roland; Wang, Xiaofeng; Lucas, Spencer G.

doi:10.1016/j.jseaes.2008.06.005

Cited by 92 publications

(55 citation statements)

References 49 publications

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“…This upheaval is also documented by isotope excursions as evidence of a disturbance of the global carbon cycle; such isotope excursions have also been reported from the PermianTriassic boundary in the Dalongkou North Limb section in the Junggar Basin (Foster and Afonin 2005). At this section, the position of the Permian-Triassic boundary has recently been delimited by biostratigraphic data and stable isotope excursions (Metcalfe et al 2010).…”

Section: Triassicmentioning

confidence: 54%

“…Data on palaeoclimate development in the Junggar Basin in the Triassic are rather scarce, and most articles dealing with this subject published to date focus either on the Permian-Triassic boundary (e.g., Lou et al 2000;Metcalfe et al 2010) and the Early Triassic (e.g., Ouyang and Norris 1999) or on the Late Triassic and the Triassic-Jurassic boundary (e.g., Ashraf et al 1999Ashraf et al , 2001Sun et al 2001). However, none of these articles has an explicit palaeoclimatic focus, and a recent review on Triassic climate development on a global scale does not even refer to the scarce facts known from this basin (Preto et al 2010).…”

Section: Triassicmentioning

confidence: 99%

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Triassic and Jurassic palaeoclimate development in the Junggar Basin, Xinjiang, Northwest China—a review and additional lithological data

Ashraf

Sun

et al. 2010

Palaeobio Palaeoenv

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Section: Triassicmentioning

confidence: 54%

Section: Triassicmentioning

confidence: 99%

Triassic and Jurassic palaeoclimate development in the Junggar Basin, Xinjiang, Northwest China—a review and additional lithological data

Ashraf

Sun

et al. 2010

Palaeobio Palaeoenv

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“…Carbon-iso tope ex cur sions are rec og nized in a wide range of ma rine and con ti nen tal de pos its; they rep re sent ma jor per tur ba tions of the global car bon cy cle and are of ten global events (e.g., Metcalfe et al, 2009;Cao et al, 2010;Bond et al, 2010;Richoz et al, 2010), al though changes in the d 13 C of car bon ate rocks of epeiric seas might not be re lated to vari a tions in the global or ganic car bon cy cle (e.g., Swart, 2008). Re gional strati graphic cor re la tion within the upper Perm ian Zechstein of cen tral and north-west Eu rope is rel atively straight for ward since sed i men ta tion through out the area fol lowed the clas si cal model of cy clic chem i cal pre cip i ta tion in a gi ant sa line ba sin.…”

Section: Introductionmentioning

confidence: 99%

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Peryt¹,

Durakiewicz²,

Kotarba³

et al. 2012

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The Kupferschiefer (T1) re cords a pe riod of ba sin-wide euxinic con di tions, and is thus con sid ered an ex cel lent time-marker in the Zechstein (Lopingian) ba sin. Pre vi ous stud ies in di cated that both the Kupferschiefer and Marl Slate and the over ly ing Zechstein Limestone (Magnesian Lime stone) show re mark able changes in car bon iso to pic com po si tion to wards higher 13 C carb val ues. We have ex amined the Kupferschiefer of the Zdrada IG 8 bore hole that has re cently been stud ied in de tail by Pašava et al. (2010) aim ing to use the car bon iso tope data from the basal Zechstein for strati graphic cor re la tion of the Zechstein ba sin with the global iso to pic curve for Late Perm ian. The d 13 C val ues in the Zdrada IG 8 change from +0.7‰ at the Kupferschiefer base to +5.4‰ in its mid dle part, then de crease to +1.7‰ at the Kupferschiefer top and next rap idly in crease to +3.5‰ (in the low est part of the Zechstein Lime stone) and fi nally to +5.1‰ (0.5 m above). This in creas ing trend con tin ues into the Zechstein Lime stone; all sub se quent Zechstein ma rine car bon ates show highly pos i tive d 13 C val ues. The d 13 C curve that best shows the Zechstein base may lie near a se quence bound ary in the up per Guadalupian of South China that post dates the mid-Guadalupian ex tinc tion, but the early Wuchiapingian cono donts re ported from the basal Zechstein de pos its else where ex clude such an in ter pre ta tion. The in crease re corded in the in ter val from the Kupferschiefer to the Main Do lo mite fits well the in crease of the d 13 C val ues ob served af ter Iso tope Event 0 (some 258 Ma) of the iso to pic curve for the Late Perm ian, al though the in crease in the Zdrada IG 8 is clearly more sig nif i cant than that of the global d 13 C curve. In turn, the sub se quent slight fall that ac cel erated af ter Iso tope Event 1 fits the more sig nif i cant fall in the Platy Do lo mite. Re search In sti tute, Rakowiecka 4, Po land, slawomir.oszczepalski@pgi.gov.pl; Tomasz Durakiewicz, Los Alamos Na tional Lab o ra tory, Los Alamos, NM87545, USA, Maciej J. Kotarba, Fac ulty Tadeusz M. Peryt and S³awomir Oszczepalski, Pol ish Geo log i cal In sti tute -Na tional of Ge ol ogy, Geo physics and En vi ron men tal Pro tec tion, AGH Uni ver sity of Sci ence and Tech nol ogy,

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“…Temporal and spatial discrete information on the sedimentary record of the Junggar Basin is mainly based on outcrop belts within and in front of the surrounding mountain ranges that dominantly expose sedimentary facies proximal to the source areas (Hendrix et al 1992;Fang et al 2006;Metcalfe et al 2009;Hornung and Hinderer 2010). The Permian is characterized by a gradual transition from deep marine to nonmarine depositional environments.…”

Section: Introductionmentioning

confidence: 99%

Sedimentary and palaeoenvironmental evolution of the Junggar Basin, Xinjiang, Northwest China

Wei-hua

Hornung

Liu

et al. 2010

Palaeobio Palaeoenv

107

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This review paper summarizes the sedimentary and palaeoenvironmental evolution of the Junggar Basin in Northwest China largely based on hardly accessible Chinese language papers, and complemented by own field observations and a critical survey of key sediment cores from petroleum wells. We have combined this information and updated existing lithofacies and isopach maps for characteristic time slices of basin evolution and palaeoenvironmental change. The Junggar Basin was initiated during the late stage of collisional tectonics in the southern Central Asian Orogenic Belt (Altaids) since the Early Permian. According to studies in surrounding mountain chains and geophysical surveys, the basement consists of a collage of oceanic basins, intraoceanic island arcs, and microcontinents of Precambrian to Palaeozoic age. The basin fill is subdivided into three tectonically controlled stratigraphic sequences which are separated by two regional angular unconformities. The first cycle in the Permian and Triassic is characterized by an Early Permian extensional strike-slip and a Late Permian to Triassic compressional foreland setting. After an Early Permian marine regression, persistent nonmarine fluvio-lacustrine conditions were established containing probably the thickest organic-rich mudstone interval in the world, which act as major source rocks of the basin. Starting with four depocenters, the basin was unified during the Triassic. The preserved total maximum thickness of this cycle is about 8,500 m in the southern depocenter. During the second intracontinental depression cycle, subsidence slowed down and the depocenter migrated towards the basin center reaching a maximum thickness of 6,000 m. The palaeoenvironment was dominated by a large oscillating freshwater lake receiving changing quantities of clastic sediments from the surrounding mountain ranges and forming alluvial fans, braid plains, and deltas partly containing coal seams of economic interest. Sedimentary facies, pollen, and palaeobotanical plant fossils show an overall aridization trend and a shrinking lake cover. During the Neogene cycle, the depocenter migrated back to the south and the former asymmetric foreland basin was reactivated due to thrusting and rapid uplift of the Tian Shan. The maximum thickness of these molasse-type deposits exceeds 5,000 m. Despite its strong potential, there is still a lack of high resolution bio-and cyclostratigraphy, sequence stratigraphy, and palaeoclimate studies in the Junggar Basin to elucidate local versus regional palaeoenvironmental patterns and to better constrain fardistance tectonic forcing.

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Stratigraphy, biostratigraphy and C-isotopes of the Permian–Triassic non-marine sequence at Dalongkou and Lucaogou, Xinjiang Province, China

Cited by 92 publications

References 49 publications

Triassic and Jurassic palaeoclimate development in the Junggar Basin, Xinjiang, Northwest China—a review and additional lithological data

Triassic and Jurassic palaeoclimate development in the Junggar Basin, Xinjiang, Northwest China—a review and additional lithological data

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Sedimentary and palaeoenvironmental evolution of the Junggar Basin, Xinjiang, Northwest China

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