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

Gao, Youfeng; Wang, Pujun; Cheng, Rihui; Wang, Guo-Dong; Wan, Xiaoqiao; Wu, Hanning; Wang, Shuxue; Liang, Wenxin

doi:10.1016/s1872-5791(08)60081-0

Cited by 32 publications

(16 citation statements)

References 2 publications

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“…Fossil occurrence is strongly linked to lithostratigraphy, which is strongly related to lake-level (Ye et al, 2002;Gao et al, 2008). By use of the paleoecological analysis presented above, combined with lithofacies information Gao et al, 2009;, lake-level changes were reconstructed (Fig. 6).…”

Section: Discussionmentioning

confidence: 99%

Late Cretaceous biostratigraphy and paleoenvironmental reconstruction based on non-marine ostracodes from well SK1 (south), Songliao Basin, northeast China

Wan

et al. 2011

Hydrobiologia

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High-resolution biostratigraphy has been established on the basis of fossil ostracodes from cores of the Cretaceous Continental Scientific Drilling borehole-Songke 1 (south) (SK1(s)) in the Songliao Basin, northeast China. More than 80 species belonging to 13 genera have been identified and 15 ostracode assemblage zones have been recognized. On the basis of ostracode paleoecological analysis, paleoenvironments, for example lake levels and salinity, have been reconstructed. Two inferred deep-water phases occurred during the deposition of the lower Qingshankou and lower Nenjiang formations, whereas shallower water phases probably occurred during deposition of the upper Quantou and uppermost Qingshankou to Yaojia formations. The salinity of paleo-Songliao lake is interpreted as predominantly freshwater to oligohaline. Oligohaline to mesohaline water environments may have occurred during the first and middle third members of the Qingshankou formation and the lower first and lower second members of the Nenjiang formation.

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Section: Discussionmentioning

confidence: 99%

Late Cretaceous biostratigraphy and paleoenvironmental reconstruction based on non-marine ostracodes from well SK1 (south), Songliao Basin, northeast China

Wan

et al. 2011

Hydrobiologia

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“…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]. The Yaojia Formation is mainly composed of siltstones and silty mudstones [ Cheng 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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“…Cretaceous paleoclimate evolution of the Songliao Basin. Spore/pollen relative abundances, paleotemperature zones, and paleohumidity are from Gao et al (2009). Those of the Far East are from Zakharov et al (1999).…”

Section: Geological Background and Scientific Objectivesmentioning

confidence: 98%

“…19) was based on centimeter-by-centimeter description integrated with well logs, seismic data, and well-to-well correlation in the Songliao Basin. Upper Cretaceous of the Songliao Basin can be subdivided into sequences of 2 second order, 6 third order, 72 fourth order, 527 fifth order and 1601 sixth order (Gao et al, 2009;Wang et al, 2013b).…”

Section: Preliminary Progress Of the Songliao Basin Drilling Projectmentioning

confidence: 99%

Fifteen years of the Chinese Continental Scientific Drilling Program

Yang

Wang

et al. 2017

Sci. Dril.

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Abstract. Continental scientific drilling can be regarded as "a telescope into the Earth's interior" because it provides process insight and uncompromised samples of rocks, fluids, and even sampled from the deep biosphere from the Earth's surface to great depths. As one of the three founding members of the International Continental Scientific Drilling Program (ICDP), ICDP China has made great achievements in many scientific drilling-related research fields. Based on the ICDP participation it attracted global attention of scientists and set up not only the Chinese Continental Scientific Drilling (CCSD) Program in 2001 but also a growing number of ambitious drilling projects in the country.The 5158 m deep borehole of the CCSD project at Donghai County in the Sulu ultrahigh-pressure metamorphic terrain demonstrates that large amounts of crustal rocks of the South China Block have been subducted to at least 120 km, followed by rapid uplift. After successful completion of drilling at Donghai, several continental scientific drilling projects were conducted with funding of the Chinese government and partially with support of ICDP, resulting in a total drilling depth of more than 35 000 m.

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

Cited by 32 publications

References 2 publications

Late Cretaceous biostratigraphy and paleoenvironmental reconstruction based on non-marine ostracodes from well SK1 (south), Songliao Basin, northeast China

Late Cretaceous biostratigraphy and paleoenvironmental reconstruction based on non-marine ostracodes from well SK1 (south), Songliao Basin, northeast China

Toward age determination of the termination of the Cretaceous Normal Superchron

Fifteen years of the Chinese Continental Scientific Drilling Program

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