Late Cretaceous stratigraphy, Songliao Basin, NE China: SK1 cores

Wan, Xiaoqiao; Zhao, Jing; Scott, Robert W.; Wang, Pujun; Feng, Zihui; Huang, Qinghua; Xi, Dangpeng

doi:10.1016/j.palaeo.2012.10.024

Cited by 169 publications

(61 citation statements)

References 18 publications

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“…The present study is based on the south core (SK1 (S)). This core is 959.55 m long, covering the strata of member 3 of the Quantou Formation to member 2 of the Nenjiang Formation (Gao et al, 2008;Wan et al, 2012), which were deposited during large lake expansions.…”

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confidence: 99%

Late Cretaceous palynology and paleoclimate change: Evidence from the SK1 (South) core, Songliao Basin, NE China

Zhao

Wan

et al. 2014

Sci. China Earth Sci.

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Cretaceous climate was warmer than today. The Songliao Basin contains one of the most important Late Cretaceous non-marine deposits in China for the research of the paleoenvironment and paleoclimate. This research is based on core samples from the SK1(S) borehole. The strata sampled are the upper part of the Quantou Formation to member 2 of the Nenjiang Formation, where spores, pollen, dinoflagellates, and other microfossils are abundantly preserved. Based on analysis of the spores and pollen fossils from the core samples, the following six fossil assemblage zones have been recognized in ascending order: The . The six fossil zones range from the late Cenomanian to early Campanian. The Late Cretaceous dinoflagellate cysts in the Songliao Basin are of high abundance and low diversity. Specific phytoplankton types reflect salinity changes of the Songliao Lake. Paleoecology of the dinoflagellates suggests that sediments of members 2 and 3 of the Yaojia Formation (K 2 y 2+3 ) were deposited in a freshwater environment, whereas members 2 and 3 of the Qingshankou Formation (K 2 q 2+3 ) and members 1 and 2 of the Nenjiang Formation (K 2 n 1+2 ) were deposited in freshwater to brackish water environments. Combined with the paleoecology of dinoflagellates and the palynomorph biozones, valuable information of the paleoclimate was provided. The quantitative analyses of spores and pollen fossils, such as vegetation type, climate type, and humidity type, diversity and dominance, indicate a relatively sub-humid, mid-subtropical paleoclimate, with slight climatic fluctuation and/or temporal change.Late Cretaceous, Songliao Basin, spores and pollen, dinoflagellate, paleoclimate Citation:Zhao J, Wan X Q, Xi D P, et al. 2014. Late Cretaceous palynology and paleoclimate change: Evidence from the SK1 (South) core,

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Late Cretaceous palynology and paleoclimate change: Evidence from the SK1 (South) core, Songliao Basin, NE China

Zhao

Wan

et al. 2014

Sci. China Earth Sci.

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“…These features mark an abrupt change of environment from the first deep lake stage during early Qingshankou Fm to shallow lake or exposure during the latest Qingshankou Fm (Song et al, ). Recently, extensive chronology investigations carried out recently tightly constrained the age of the T11 boundary as 86.2–88 Ma (Deng et al, ; He et al, ; Song et al, ; Wan et al, ; Wang et al, ). This time interval coincides with coeval unconformities or hiatuses documented in the numerous other Cretaceous sedimentary basins in eastern China and Mongolia (A et al, ; Bonnetti et al, ; Graham et al, ; Johnson et al, ; Song et al, ).…”

Section: Tectonostratigraphy Frameworkmentioning

confidence: 99%

“…Unlike the overlying Cenozoic strata, the Late Cretaceous strata of the basin were strongly folded and truncated during this uplift and deformation event (Figure ). According to the stratigraphic age of the uppermost member of the Mingshui Formation (Wan et al, ; Wu, Wang, et al, ), the T02 gap began at ~65 Ma. However, its duration has no reliable chronological constraints because the Cenozoic deposits are localized, thin and barren (Song et al, ).…”

Section: Tectonostratigraphy Frameworkmentioning

confidence: 99%

Post‐rift Tectonic History of the Songliao Basin, NE China: Cooling Events and Post‐rift Unconformities Driven by Orogenic Pulses From Plate Boundaries

et al. 2018

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The classic lithosphere‐stretching model predicts that the post‐rift evolution of extensional basin should be exclusively controlled by decaying thermal subsidence. However, the stratigraphy of the Songliao Basin in northeastern China shows that the post‐rift evolution was punctuated by multiple episodes of uplift and exhumation events, commonly attributed to the response to regional tectonic events, including the far‐field compression from plate margins. Three prominent tectonostratigraphic post‐rift unconformities are recognized in the Late Cretaceous strata of the basin: T11, T03, and T02. The subsequent Cenozoic history is less constrained due to the incomplete record of younger deposits. In this paper, we utilize detrital apatite fission track (AFT) thermochronology to unravel the enigmatic timing and origin of post‐rift unconformities. Relating the AFT results to the unconformities and other geological data, we conclude that in the post‐rift stage, the basin experienced a multiepisodic tectonic evolution with four distinct cooling and exhumation events. The thermal history and age pattern document the timing of the unconformities in the Cretaceous succession: the T11 unconformity at ~88–86 Ma, the T03 unconformity at ~79–75 Ma, and the T02 unconformity at ~65–50 Ma. A previously unrecognized Oligocene unconformity is also defined by a ~32–24 Ma cooling event. Tectonically, all the cooling episodes were regional, controlled by plate boundary stresses. We propose that Pacific dynamics influenced the wider part of eastern Asia during the Late Cretaceous until Cenozoic, whereas the far‐field effects of the Neo‐Tethys subduction and collision processes became another tectonic driver in the later Cenozoic.

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“…Markevich as Kuprianipollis santa loides-Duplosporis borealis Assemblage and dated as Santonian [7,8] Nearby the Jiayin area to southwest, there is the Songliao Basin, the largest Mesozoic sedimentary basin in Northeast China, consisting mainly of the Upper Cretaceous deposits, yielding abundant fossils and oil gas resources. The Upper Cretaceous of the Songliao Basin is composed of (in ascending order) the Quantou, Qinshankou, Yaojia, Nenjiang, Sifangtai and Mingshui formations, which have been studied in high resolution with radiometric dating in recent years [19][20][21][22][23]. Among these formations, the upper Yaojia Formation and lowest Nenjiang Formation could be correlated to the Yong'ancun Formation of Jiayin.…”

Section: Introductionmentioning

confidence: 99%

New data on palynology of lower part of Yong’ancun formation (Upper Cretaceous) in Jiayin of Heilongjiang, Zeya-Bureya Basin, China

Liang

Zhang

Маркевич

et al. 2015

Russ. J. of Pac. Geol.

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Some new palynological fossils were newly found from the lower part of Upper Cretaceous Yong'ancun Formation in Jiayin, China, nearby the Heilongjiang (Amur) River. 43 genera and 54 species of palynomorphs, and three palynological sub assemblages have been recently identified in the lower Yong'ancun Formation. The palynomorphs are dominated by gymnosperms and ferns, angiosperm pollen not abundant. The fern spores are represented mainly by Cyathidites−Dictyotriletes, gymnosperms by Pinus pollenites−Podocarpidites, and angiosperms by Retitricolpites−Mancicorpus. The palynological assemblage is comparable in general to those from the Members 2-3 of Yaojia Formation and the Member 1 of Nenjiang Formation in Songliao Basin, China, indicating the Santonian age. The new palynological material provides supplementary evidence for better understanding of the Santonian palynoflora of the Yong'ancun Formation in Jiayin.

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Late Cretaceous stratigraphy, Songliao Basin, NE China: SK1 cores

Cited by 169 publications

References 18 publications

Late Cretaceous palynology and paleoclimate change: Evidence from the SK1 (South) core, Songliao Basin, NE China

Late Cretaceous palynology and paleoclimate change: Evidence from the SK1 (South) core, Songliao Basin, NE China

Post‐rift Tectonic History of the Songliao Basin, NE China: Cooling Events and Post‐rift Unconformities Driven by Orogenic Pulses From Plate Boundaries

New data on palynology of lower part of Yong’ancun formation (Upper Cretaceous) in Jiayin of Heilongjiang, Zeya-Bureya Basin, China

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