Description of Cretaceous Sedimentary Sequence of the Quantou Formation Recovered by CCSD-SK-Is Borehole in Songliao Basin: Lithostratigraphy, Sedimentary Facies and Cyclic Stratigraphy

WANG, Guodong; Cheng, Rihui; WANG, Pujun; Gao, Youfeng; WANG, Chengshan; REN, Yanguang; Huang, Qinghua

doi:10.1016/s1872-5791(08)60078-0

Cited by 22 publications

(5 citation statements)

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“…The strata comprise the upper Quantou Formation, the Qingshankou Formation, the Yaojia Formation and the lower Nenjiang Formation. The upper Quantou Formation mainly consists of lacustrine and fluviolacustrine siltstones and silty mudstones interbedded with fluvial sandstones [ G. D. Wang et al , 2009]. The Qingshankou Formation and the lower Nenjiang Formation predominantly comprise lacustrine mudstones [ Gao et al , 2009; P. J. Wang et al , 2009].…”

Section: Geological Setting and Samplingmentioning

confidence: 99%

Toward age determination of the termination of the Cretaceous Normal Superchron

He¹,

Deng²,

Wang³

et al. 2012

Geochem Geophys Geosyst

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[1] We present an integrated chronology for the terrestrial Upper Cretaceous in East Asia based on highresolution magnetostratigraphic results and detailed SIMS U-Pb zircon analyses of a continuous continental sedimentary sequence drilled from the Songliao Basin in northeast China. Correlation to the geomagnetic polarity timescale was achieved by combining magnetostratigraphic and SIMS U-Pb zircon geochronologic data, which suggest that the south core of the CCSD-SK-I sedimentary sequence spans from upper chron C34n to lower chron C33r. The age of the termination of the Cretaceous Normal Superchron (CNS) was estimated to be $83.4 Ma. Intervals of reverse geomagnetic field polarity of early Santonian age could be present during the late CNS. Two black shale layers at the base of Member 1 of the Qingshankou Formation and Member 2 of the Nenjiang Formation, which were previously interpreted as the products of lake anoxic events LAE1 and LAE2, have been well dated at 91.4 Ma and 83.7 Ma, respectively, by SIMS U-Pb zircon analyses of intercalated bentonite layers. However, the LAE1 and LAE2 identified here are not temporally correlated to the known oceanic anoxic events.

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Section: Geological Setting and Samplingmentioning

confidence: 99%

Toward age determination of the termination of the Cretaceous Normal Superchron

He¹,

Deng²,

Wang³

et al. 2012

Geochem Geophys Geosyst

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“…This texture is also present in the anterior caudal vertebrae of the indeterminate titanosauriform Jiutaisaurus from the Cenomanian of China (Wu et al. 2006; Wang et al. 2009).…”

Section: Is Pmu R263 a Diplodocid?mentioning

confidence: 99%

Cretaceous diplodocids in Asia? Re‐evaluating the phylogenetic affinities of a fragmentary specimen

2011

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The recent description of an anterior caudal vertebra purportedly belonging to a diplodocid sauropod from the Early Cretaceous of China has the potential to drastically alter our interpretation of the evolution and timing of geographical dispersal of a major dinosaur lineage. However, comparison with a wider taxonomic sample points more strongly towards titanosauriform affinities for this specimen, which is in keeping with the affinities of all other sauropods known from the Cretaceous of Asia. We explain the disparity in phylogenetic interpretation of this isolated vertebra as a by-product of scoring differences and analysis of fragmentary material using repurposed data matrices. Rescoring the isolated vertebra based on our interpretation of the anatomy and rerunning the original analyses removes the specimen from Diplodocoidea but does not place it within Titanosauriformes, because of inadequacy in taxon and character sampling inherited from the repurposed data matrices. We suggest that phylogenetic analysis must begin with an initial hypothesis of affinity, based on comparative anatomy and spatiotemporal distributions, that must be adequately tested by the data matrix employed -i.e. data matrices should be tailored to sample anatomically, geographically and temporally relevant clades, and new characters should be added in tandem with new taxa so that the potential synapomorphy pool is not diluted. This is especially important for analyses of fragmentary specimens, which are likely to return coarse phylogenetic results with general evolutionary and palaeobiogeographical implications.Key words: Dinosauria, Diplodocoidea, Titanosauriformes, Early Cretaceous, phylogenetic systematics, homoplasy, taxon sampling.R ecently, an isolated anterior caudal vertebra from the Early Cretaceous of China was described as the first diplodocid sauropod from Asia (Upchurch and Mannion 2009). This claim has dramatic consequences for dinosaur palaeobiogeography, because it would represent the first diplodocid recovered outside the Late Jurassic and the only Asian diplodocoid. Upchurch and Mannion (2009) defended this conclusion with congruent phylogenetic results derived from two independent, large-scale data matrices (Wilson 2002; Upchurch et al. 2004a).The dinosaur and mammal faunas of Asia have received a great deal of attention because of their somewhat peculiar character, which is thought to have resulted from an interval of geographical isolation (Russell 1993; Upchurch 1995; Buffetaut and Suteethorn 1999; Luo 1999; Barrett et al. 2002; Upchurch et al. 2002; Zhou et al. 2003). Although there is disagreement about the mechanism and duration of the physical isolation of East Asia from the rest of Pangaea, the pattern in sauropod dinosaurs is striking. All known Triassic and Jurassic Asian sauropods (18 genera) most likely fall outside the main radiation of Neosauropoda (but see Upchurch et al. 2004a), but all Cretaceous Asian sauropods (28 genera) are members of the derived neosauropod subgroup Titanosauriformes ...

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“…The colour of fine‐grained sediments (mudstone and silty mudstone) is closely related to palaeoclimate (Helmke et al, 2002). Red and variegated floodplain sediments occurred in the Nenjiang to Mingshui formations (Cheng et al, 2009; Wang et al, 2011), indicating arid or seasonal rainfall conditions (Du et al, 2011; Huang, 2010; Parrish, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…This basin is connected with the Siberia Plate by the Mongolia‐Okhotsk collisional belt to the north (Zorin, 1999) and united with the Pacific Plate by Sikhote‐Alin structural belt to the east (Alexandra et al, 2012). Its evolution is affected by the two active marginal zones (Shao et al, 1997; Wang et al, 2015; Wang et al, 2016; Wu et al, 2011; Xu, Wang, et al, 2013; Yi et al, 2004; Zhao et al, 1994). Finally, four‐fault systems (NNE, NE, NW and E‐W direction) were formed, which controlled the axial direction of the basin, the distribution of tectonic units and the distribution and accumulation of oil and gas in the later period.…”

Section: Geological Settingmentioning

confidence: 99%

Petrography and geochemistry of Late Cretaceous clastic rocks in the northern Songliao Basin, north‐eastern China: Implications for provenance and weathering

Tang

Chen

et al. 2023

Geological Journal

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Petrography and geochemical data of the Late Cretaceous clastic rocks in the northern Songliao Basin were used to infer the provenance and chemical weathering history. Petrographic data indicates that the composition of the sandstones is mainly quartz (34.48–50.43%), feldspars (14.16%–24.07%) and lithic fragments (33.91%–45.9%). Similar REE patterns and trace element ratios suggest that both the sandstones (LaCN/YbCN = 12.97; Eu/Eu* = 0.81; Th/Sc = 1.10) and mudstones (LaCN/YbCN = 10.02; Eu/Eu* = 0.71; Th/Sc = 1.10) were derived from a similar source area with felsic volcanic rocks as dominant contributors. The main provenance area is probably the eastern Zhangguangcai Range, the north‐eastern Lesser Xing'an Range and the south‐eastern Songliao Basin. A modelled mixture composed of 65% granodiorite in the Lesser Xing'an Range, 30% granite in Zhangguangcai Range and 5% epidiorite in the south‐eastern Songliao Basin, can be interpreted as the potential source compositions for the clastic sediments. This conclusion is reinforced by the major element of geochemistry composition and sandstone petrography. Relatively low Chemical Index of Alteration (CIA) values in mudstones (48.14–69.26) and sandstones (50.78–59.96) indicate mild chemical weathering conditions in the source area. The chemical weathering history suggests that a cold and arid climate prevailed during the Late Cretaceous.

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Description of Cretaceous Sedimentary Sequence of the Quantou Formation Recovered by CCSD-SK-Is Borehole in Songliao Basin: Lithostratigraphy, Sedimentary Facies and Cyclic Stratigraphy

Cited by 22 publications

References 0 publications

Toward age determination of the termination of the Cretaceous Normal Superchron

Toward age determination of the termination of the Cretaceous Normal Superchron

Cretaceous diplodocids in Asia? Re‐evaluating the phylogenetic affinities of a fragmentary specimen

Petrography and geochemistry of Late Cretaceous clastic rocks in the northern Songliao Basin, north‐eastern China: Implications for provenance and weathering

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