Magnetostratigraphy of the fluvio-lacustrine sequence of core DY-1 in the Datong Basin and its implications for the evolution of the Shanxi Rift System in northern China

Bi, Yunpeng; Er-cheng, Pang; Sun, Yongshuo; Liu, Yulong; Bian, Qiuman; Liu, Suzhen; Shen, Zhongshan; Xiong, Jianguo; Zhang, Huandi; Hao, Qingzhen; Deng, Chenglong

doi:10.1016/j.palaeo.2022.111063

Cited by 13 publications

(4 citation statements)

References 55 publications

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“…The new data sources are (1) Bi et al. (2022), (2) R. Wei et al. (2022), (3) This study, (4) X. Chen et al., 2021, (5) J. Liu et al.…”

Section: Discussionmentioning

confidence: 99%

Quantifying the Structure and Extension Rate of the Linfen Basin, Shanxi Rift System Since the Latest Miocene: Implications for Continental Magma‐Poor Rifting

Su,

He,

Liu

et al. 2023

Tectonics

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The formation of magma‐poor continental rifts is an enigmatic process, as the weakening mechanism(s) for cratonic lithosphere remains uncertain in the absence of elevated lithospheric temperature. One view links weakening to melts hidden at depth, while another ascribes it to pre‐existing weaknesses. Long‐term extensional rates also influence lithospheric strength and rift evolution. We target the Linfen Basin (LB) in the magma‐poor Shanxi Rift System (SRS) in the North China Craton to understand these components. We apply cosmogenic 26Al/10Be burial dating on 14 core samples at different depths from three deep boreholes in the basin and obtain six valid burial ages ranging from 2.37+1.18/−1.21 to 5.86+inf/−1.37 Ma. We further re‐interpret a seismic reflection profile and quantify the geometry and amount of extension by forward structural modeling with multiple constraints based on extensional fault‐bend folding theory. The timing of the basal sedimentation is estimated to be ∼6.1 and ∼4.2 Ma in the southern and northern portions, respectively, indicating diachronous, northward‐propagating rifting. The amount and mean rate of extension are ∼3.6 km and ∼0.9 km/Myr, respectively. The basin depths increasing northward indicates the clockwise rotation of the basin. We propose a basin‐scale non‐rigid transtensional bookshelf faulting model to explain the rotation patterns of the circum‐Ordos basins. We argue that the inherited structures weaken the cratonic lithosphere of the SRS, and the low extension rate contributes to its magma‐poor nature. We propose a lithospheric‐scale evolution model for the LB, invoking the inherited crustal weakness, low extension rate, and lower lithosphere counterflow.

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“…The new data sources are (1) Bi et al. (2022), (2) R. Wei et al. (2022), (3) This study, (4) X. Chen et al., 2021, (5) J. Liu et al.…”

Section: Discussionmentioning

confidence: 99%

Quantifying the Structure and Extension Rate of the Linfen Basin, Shanxi Rift System Since the Latest Miocene: Implications for Continental Magma‐Poor Rifting

Su,

He,

Liu

et al. 2023

Tectonics

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“…near the E margin of the basin and inferred a river-dominated to a lake depositional setting for their cycle II which resembles the cycles 5 and 6 of the NH-T section. Bi et al (2022) inferred that the Datong Basin, located to the W of the Nihewan Basin, underwent a transition from dominant fluvial conditions (7.0-4.2 Ma) to the development of lacustrine environments (4.2-1.8 Ma) due to dipslip fault activities, and ultimately, a gradual shrinkage of the lake after 1.8 Ma.…”

Section: White Marl Depositsmentioning

confidence: 99%

Early Pleistocene depositional and environmental conditions at Dachangliang, Nihewan Basin, NE China

H. Moghazi,

Zhao,

Zhang

et al. 2024

Front. Earth Sci.

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The Pleistocene sediments of Nihewan Basin in NE China are intensively studied since ca. 100 years because of its rich mammalian fossil record and abundant stone-artifact-bearing layers. To better understand the mechanisms underlying past climate and environmental changes in the basin, three sediment sections at the Dachangliang location were investigated using a multi-proxy toolbox of sedimentological, magnetic susceptibility (MS) and micropalaeontological analyses. The exposed sediments are lithologically mostly relatively homogeneous, with grain sizes in a relatively small range. However, variations in colour, bedding structures, concentrations of magnetic minerals and the ostracod assemblage were used to correlate the three sections to form the synthetic NH-T section of 86.2-m total length. The sediments mainly represent varicoloured silt of probably reworked loess deposits, partially interbedded with fine sand layers and minor contributions of clay particles. These sediments are interpreted to have accumulated in wetlands alternating with deposition on an alluvial plain, and with a lacustrine setting which probably existed from time to time. These different depositional settings are expressed in the three dominant fine to coarse silt-sized components and the ostracod-assemblage changes (mostly Limnocythere flexa, Ilyocypris spp. and Leucocythere sp.). The recorded ostracods of laterally apparently consistent white marl beds (dominantly Cytherissa lacustris) were used to stratigraphically correlate these sections. The resulting NH-T section was further correlated with the three proximal artefact-bearing sections Majuangou, Banshan and Xiantai which have published magnetostratigraphic data. The correlation shows that the investigated sedimentary sequence was probably formed between ca. 1.7 and 0.9 Ma. The relatively continuous synthetic sequence NH-T represents three main wetter periods with three intervening drier intervals, possibly synchronous with interglacial (S23-S20, S15-S13 and S10-S9) and glacial (L20-L18, L17-L16 and L13-L11) periods which were previously inferred from the palaeoclimatic records of the Chinese Loess Plateau (CLP) in the SW of the Nihewan Basin.

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“…Earlier studies suggested that the SGS initiated in the Pliocene as basal deposits in the north and central grabens are primarily of Pliocene age (Li et al., 1998; Xu & Ma, 1992; Xu et al., 1993). Recent low‐temperature thermochronology and paleomagnetic studies, however, suggest that rifting of the SGS began in the late Miocene (Bi et al., 2022; Chen et al., 2021; Clinkscales et al., 2020, 2021; Su et al., 2021) and may have propagated northward through time (Ai et al., 2019; Bao et al., 2013; Jiang et al., 2013; Song et al., 2012). Rifting of the SGS is active, manifested by strong earthquakes and the occurrence of Quaternary volcanism within the rift zones (e.g., the Datong Volcano) (Figures 2a and 2b).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The latest high‐resolution magnetic stratigraphy of the sedimentary sequence indicates that the Datong Basin was developed no later than ca. 7 Ma (Bi et al., 2022). Seismicity in the northern SGS is primarily characterized by moderate earthquakes both in historical and instrumental records (Xu et al., 2002).…”

Section: Geologic Settingmentioning

confidence: 99%

Direct Evidence for Dextral Shearing in the Shanxi Graben System: Geologic and Geomorphologic Constraints From the North Liulengshan Fault

Luo

Schoenbohm

et al. 2022

Tectonics

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North China is an ancient craton (i.e., North China Craton) in eastern continental Asia, consisting of two main tectonic blocks, the Ordos Block in the west and the North China Plain in the east (Figure 1; Zhao et al., 2005). Since its formation in the Precambrian, the North China Craton had maintained long-term tectonic stability. However, from the late Mesozoic to the Cenozoic, it has undergone tremendous craton destruction and gradually lost its stability, particularly in its eastern part (

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Magnetostratigraphy of the fluvio-lacustrine sequence of core DY-1 in the Datong Basin and its implications for the evolution of the Shanxi Rift System in northern China

Cited by 13 publications

References 55 publications

Quantifying the Structure and Extension Rate of the Linfen Basin, Shanxi Rift System Since the Latest Miocene: Implications for Continental Magma‐Poor Rifting

Quantifying the Structure and Extension Rate of the Linfen Basin, Shanxi Rift System Since the Latest Miocene: Implications for Continental Magma‐Poor Rifting

Early Pleistocene depositional and environmental conditions at Dachangliang, Nihewan Basin, NE China

Direct Evidence for Dextral Shearing in the Shanxi Graben System: Geologic and Geomorphologic Constraints From the North Liulengshan Fault

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