Stratigraphy, correlation, depositional environments, and cyclicity of the Early Cretaceous Yixian and ?Jurassic-Cretaceous Tuchengzi formations in the Sihetun area (NE China) based on three continuous cores

Wang, Yaqiong; Olsen, Paul E.; Sha, Jingeng; Yao, Xiaogang; Liao, Huanyu; Pan, Yanhong; Kinney, Sean; Zhang, Xiaolin; Rao, Xin

doi:10.1016/j.palaeo.2016.06.043

Cited by 24 publications

(24 citation statements)

References 49 publications

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“…It contains three volcano‐sedimentary cycles that rest unconformably over the Tuchengzi Fm (Figure ). The lacustrine beds of the first volcano‐sedimentary cycle in the lower part of the Yixian Fm have yielded a wide range of well‐preserved fossils (Ji et al, ; Swisher et al, ; S. Wang et al, ; Y. Q. Wang et al, ), which can be correlated with the upper fossil‐bearing layers of the Dadianzi Fm (Figure ; Liu et al, ; Pang et al, ; Tian et al, ; H. Zhang, Guo, et al, ). In the Sihetun and Huangbanjigou areas, we collected 122 paleomagnetic samples from 15 sites (Sihetun: 82 samples from nine sites; Huangbanjigou: 40 samples from six sites; Figures d and , Column E) from the vesicular basalts of the Xiatulaigou Member at the bottom of the Yixian Fm, which has been dated at 130.5 ± 0.5 and 129.7 ± 0.5 Ma using the 40 Ar/ 39 Ar method by Peng et al () and Chang et al (), respectively.…”

Section: Geological Setting and Samplingmentioning

confidence: 99%

“…The lacustrine beds of the first volcano-sedimentary cycle in the lower part of the Yixian Fm have yielded a wide range of well-preserved fossils (Ji et al, 2004;Swisher et al, 1999;S. Wang et al, 2001;Y. Q. Wang et al, 2016), which can be correlated with the upper fossil-bearing layers of the Dadianzi Fm ( Figure 2; Liu et al, 2002;Pang et al, 2006;Tian et al, 2004;H.…”

Section: The Lower Cretaceous Dadianzi and Yixian Fmsmentioning

confidence: 99%

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New Late Jurassic to Early Cretaceous Paleomagnetic Results From North China and Southern Mongolia and Their Implications for the Evolution of the Mongol‐Okhotsk Suture

Ren

Zhang

et al. 2018

JGR Solid Earth

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To better constrain the evolution of the Mongol‐Okhotsk suture, we carried out new paleomagnetic studies on Sharilyn Formation (~155 Ma) and Tsagantsav Formation (~130 Ma) in southern Mongolia, Amuria Block (AMU), and Tuchengzi Formation (~140 Ma) and Dadianzi/Yixian Formation (~130 Ma) in the Yanshan belt, North China Block (NCB). A total of 719 collected samples (from 100 sites) were subjected to stepwise thermal demagnetization. After a low‐temperature component of viscous magnetic remanence acquired in the recent field was removed, the stable high‐temperature components were isolated from most samples. The high‐temperature components from each rock unit passed a fold test and a reversal test, indicating their primary origins. The corresponding paleomagnetic poles were thus calculated. For AMU, the ~155 Ma pole is at 74.7°N/232.5°E (A95 = 3.7°), the ~130 Ma pole at 74.6°N/194.7°E (A95 = 2.9°); for the NCB, the ~140 Ma pole is at 82.7°N/208.6°E (A95 = 4.3°), the ~130 Ma pole at 80.5°N/197.4°E (A95 = 2.3°). By combining our new results with the published data, we refined the 155–100 Ma segment of the apparent polar wander paths for AMU and NCB, which can demonstrate that these two blocks have been tectonically coherent (AMU‐NCB) during 155–100 Ma. Comparison of the apparent polar wander paths, however, revealed a latitudinal plate convergence of 14.3° ± 6.9° and ~19.0° relative rotation between Siberia and the AMU‐NCB after ~155 Ma. Large‐scale latitudinal convergence likely ceased by ~130 Ma, although some relative rotation between them continued along the Mongol‐Okhotsk suture until ~100 Ma.

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Section: Geological Setting and Samplingmentioning

confidence: 99%

Section: The Lower Cretaceous Dadianzi and Yixian Fmsmentioning

confidence: 99%

New Late Jurassic to Early Cretaceous Paleomagnetic Results From North China and Southern Mongolia and Their Implications for the Evolution of the Mongol‐Okhotsk Suture

Ren

Zhang

et al. 2018

JGR Solid Earth

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“…In the Sihetun area, the Yixian Formation comprises three members (Jiang & Sha ; Wang et al . ): the fluvial and alluvial volcaniclastic Lujiatun Member, the extrusive‐basaltic Xiatulaigou Member and the lacustrine Jianshangou Member. The so‐called Upper Lava Unit, previously interpreted as a unit overlying the Jianshangou Member (Jiang & Sha ), has recently been reinterpreted as intrusive igneous rock (Wang et al .…”

Section: Geological Settingmentioning

confidence: 99%

“…; Wang et al . ). Most of the excellently preserved biota, such as feathered dinosaurs or early angiosperms (Xu et al .…”

mentioning

confidence: 97%

Ecological stasis in Spinicaudata (Crustacea, Branchiopoda)? Early Cretaceous clam shrimp of the Yixian Formation of north‐east China occupied a broader realized ecological niche than extant members of the group

et al. 2019

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The palaeoecology of Spinicaudata, the dominant group of benthic invertebrates in many pre‐Cenozoic freshwater environments, remains poorly understood. In analogy with extant taxa, it has been oversimplified and often reduced to shallow, temporary environments characterized by few trophic levels, implying ecological stasis from the Devonian to the Recent. We excavated 43 horizons of the Lower Cretaceous Yixian Formation (Anjiagou and Hengdaozi beds) to evaluate whether spinicaudatan ecology can be simplified to such an extent. Sedimentological evidence suggests general perennial conditions during the excavated lake interval. Based on 33 226 specimen counts, we identified three arthropod‐dominated macrobenthic associations and two assemblages. Response curves indicate that the spinicaudatan Eosestheria middendorfii was exceptionally tolerant to environmental gradients, followed, in decreasing order, by mayfly larvae, water boatmen and oligochaetes. Many spinicaudatan‐yielding layers represent death after reproductive senescence rather than mass‐mortality events. Spinicaudatan size varies significantly according to faunal association. A forward stepwise regression model suggests that growth responded to population density and diversity: lower densities and higher diversities triggered fast growth, and vice versa. The proposed strong density effect on carapace size has been corroborated by rearing experiments: as for E. middendorfii, natural log regression provided the best fit for the two extant species Eulimnadia texana and Eocyzicus argillaquus. Hence, E. middendorfii was a tolerant and morphologically variable species adapted to perennial waters and the frequent presence of higher trophic levels. Although there are rare records of extant taxa co‐occurring with fish, the described Early Cretaceous environment is commonly not inhabited by extant Spinicaudata.

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“…The nomenclature of the sedimentary successions hosting the Jehol Biota and the underlying Yixian and Tuchengzi formations is however inconsistent, hampering accurate correlations. Wang et al (2016) studied three continuous cores within the Sihetun area that penetrate these deposits and the authors present a lithostratigraphic nomenclature for the Sihetun Subbasin describing the lithology and the fossil content in each of the members and units outlined. This refined stratigraphic nomenclature of the Yixian Formation has provided a better understanding of the sequence of facies and environments in which the fossils accumulated and paves the way for correlation with other coeval basins in China.…”

Section: The Cretaceousmentioning

confidence: 99%

Mesozoic ecosystems – climate and biotas

Vajda

Pole

Sha

2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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Stratigraphy, correlation, depositional environments, and cyclicity of the Early Cretaceous Yixian and ?Jurassic-Cretaceous Tuchengzi formations in the Sihetun area (NE China) based on three continuous cores

Cited by 24 publications

References 49 publications

New Late Jurassic to Early Cretaceous Paleomagnetic Results From North China and Southern Mongolia and Their Implications for the Evolution of the Mongol‐Okhotsk Suture

New Late Jurassic to Early Cretaceous Paleomagnetic Results From North China and Southern Mongolia and Their Implications for the Evolution of the Mongol‐Okhotsk Suture

Ecological stasis in Spinicaudata (Crustacea, Branchiopoda)? Early Cretaceous clam shrimp of the Yixian Formation of north‐east China occupied a broader realized ecological niche than extant members of the group

Mesozoic ecosystems – climate and biotas

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