Mesozoic Thrust-Nappe and Extensional Structure Frameworks in the East Segment of Southeast Yangtze Block, Southeast China

Chen, Ziwei; Hu, Jun; Zeng, Yan; Liu, Xiu; He, Yu; Wang, Zishen; Meng, Linghui

doi:10.1007/s12583-020-1292-z

Cited by 9 publications

(28 citation statements)

References 63 publications

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“…Extension may exhibit an oblique northwest-southeast orientation based on the nearly E-W-trending red basins. In addition, Figure 3a illustrates that the Cretaceous centre of sedimentation migrated slightly to the north relative to the previous Jurassic depocentre caused by thrusting (Yu et al, 2011(Yu et al, , 2020, and Jurassic beds experienced weak fold deformation (Figures 3b and 4). These features collectively indicate the occurrence of a shortening stage during the gap between the Jurassic and Cretaceous periods, immediately followed by an extension event at approximately 140 Ma (Chu et al, 2019;Ji et al, 2018;Li et al, 2020;Yu et al, 2020).…”

Section: Tectonic Implications Of the Growth Strata From The Huangshan Basinmentioning

confidence: 99%

“…Consequently, the ENE-directed distributions of the Late Mesozoic strata, especially the Cretaceous strata (Figure 1), as well as the sedimentation and tectonic characteristics of Southeast China, were finally shaped (Chu et al, 2019;Ji et al, 2018;Li et al, 2020;Yu et al, 2020;Yu, Shu, Deng, Wang, & Zu, 2003).…”

Section: Geological Settingmentioning

confidence: 99%

“…The first shortening in the Middle Triassic formed several thrust faults that cut pre-Jurassic strata and were buried by J-K deposits; the first extension occurred in the Middle-Late Jurassic (Shu et al, 2007(Shu et al, , 2009; the second shortening in the Late Jurassic was caused by flat-slab subduction of the Palaeo-Pacific Plate, forming the Xiaoxi thrust fault and tectonic window (Figure 3a); the second extension in the Early Cretaceous was caused by Palaeo-Pacific Plate rollback, forming extensional structures, such as growth strata and basin marginal faults (north margin of the Huangshan Basin; Figure 3a); and the last shortening at the end of the Late Cretaceous formed the Jixi-Ningguo F I G U R E 1 Geological sketch map showing the Early Cretaceous (145-120 Ma) basins and volcanic and plutonic rocks of South China. The boundary between the Yangtze and Cathaysia blocks is referred to Ji et al (2017) Fault thrusting northwestward over the Huangshan Basin (Figure 2; Yu et al, 2020).…”

Section: Geological Settingmentioning

confidence: 99%

“…Several researchers have suggested that the extension occurred at 90-110 Ma (Dong et al, 2010;Jia et al, 2018;Jiang et al, 2013;Liu, Xu, & Xia, 2016;Pan et al, 2018;Yang, Shi, & Anderson, 2018;Wong et al, 2009;Zhou et al, 2015), and others have stated that the extension began at approximately 135 Ma (Deng et al, 2014;Gu et al, 2017;Huang et al, 2019;Ji et al, 2017Ji et al, , 2018Li, Zhang, et al, 2013;Liu, Xu, & Xia, 2014;Yang, Zhao, et al, 2018;Zhang et al, 2018). Multiple episodes of shortening and stretching occurred in Southeast China during the Late Mesozoic (Chu et al, 2019;Ji et al, 2018;Li et al, 2010Shu et al, 2009;Yu et al, 2020;Zhou et al, 2006). Moreover, although regional extension during the Cretaceous possibly occurred from the Early Cretaceous and exerted a stronger influence than that during the Jurassic, numerous examples have provided evidence that intracontinental extension in eastern South China initiated during the Early Jurassic (Cen et al, 2016;Gan, Wang, Qian, Bi, & He, 2017;Yu et al, 2010Yu et al, , 2020.…”

Section: Cretaceous Growth Strata In Jixi Red Basinmentioning

confidence: 99%

“…Multiple episodes of shortening and stretching occurred in Southeast China during the Late Mesozoic (Chu et al, 2019;Ji et al, 2018;Li et al, 2010Shu et al, 2009;Yu et al, 2020;Zhou et al, 2006). Moreover, although regional extension during the Cretaceous possibly occurred from the Early Cretaceous and exerted a stronger influence than that during the Jurassic, numerous examples have provided evidence that intracontinental extension in eastern South China initiated during the Early Jurassic (Cen et al, 2016;Gan, Wang, Qian, Bi, & He, 2017;Yu et al, 2010Yu et al, , 2020. Chu et al, 2019;Ji et al, 2018;Li et al, 2020).…”

Section: Cretaceous Growth Strata In Jixi Red Basinmentioning

confidence: 99%

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Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

Peng

et al. 2021

Geological Journal

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Cretaceous syntectonic growth strata in terrigenous basins in Southeast China have scarcely been reported in previous studies. This work focusses on the growth strata of the Early Cretaceous red beds in the East Yangtze Block (EYB), especially in the Huangshan Basin in southern Anhui Province, to help determine the Late Mesozoic tectonic domain and the precise timing of the initiation of extensional tectonics in Southeast China. Field observations show that the dip angles of the red conglomerate-bearing sandstones from the lower part of the Huizhou Fm. vary from 49 to gentle dips towards the basin centre and that the visible and estimated thickness within a single bed increases slightly downward from the upper to the lower part. These characteristics indicate that the sedimentary area of the Early Cretaceous Huizhou Formation (Fm.) has undergone an extensional process with the expansion and deepening of the sedimentary basin by rotation of the border surface (limb) and thus deposited the extension growth strata simultaneously with (or closely after) the 139 Ma Shiling volcanic activity. Caused by a NW-SE-oriented extensional stress field since ca. 140 Ma, a model in which NE-SW-oriented tectonic lines transform to E-W-trending tectono-magmatic belts by intersecting and inheriting the previous E-W-trending tectonic fabrics is established in the present work. Consequently, these phenomena are influenced by Palaeo-Pacific Plate rollback and the inheritance of astructural framework from the regional basement strata and deformation series.

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Section: Tectonic Implications Of the Growth Strata From The Huangshan Basinmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Cretaceous Growth Strata In Jixi Red Basinmentioning

confidence: 99%

Section: Cretaceous Growth Strata In Jixi Red Basinmentioning

confidence: 99%

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Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

Peng

et al. 2021

Geological Journal

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Timing of the initiation and duration of the Cretaceous extensional regime in South‐east China: Constraints from growth strata in terrigenous basins

Yu,

Hu,

et al. 2023

The Depositional Record

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There has been no consensus yet regarding the precise initial timing and duration of the late Mesozoic extensional tectonics in the South‐eastern China Block. This work focusses on the growth strata of the Early Cretaceous red beds in the South‐eastern China Block to determine the late Mesozoic tectonics and the precise timing of the initiation and duration of extensional tectonics in this area. Field observation of several terrigenous basins shows that the dip angles of the Cretaceous red beds have varied from moderate to gentle from basin edges to interiors (or centres). The visible and estimated thickness within a single bed increases slightly downwards from the upper to the lower part. These characteristics indicate that the sedimentary area of these beds has undergone an extensional process with expansion and deepening of the sedimentary basins. Rotation of the border surfaces (limbs) and downward warping of the hanging walls or retreat of the footwalls of listric normal faults causes three types of extensional growth (or syntectonic) strata in the deposits of different basins. Dating of the volcanic rocks related to the growth beds reveals that the sedimentary basins were enlarged and deepened when the Early Cretaceous strata were deposited in the South‐eastern China Block from ca 140 to 137 Ma. Regionally, under the influence of Palaeo‐Pacific plate rollback since ca 140 Ma, the South‐eastern China Block stress field has led to lithospheric uplift and pull‐apart structures near the surface, causing the half‐graben basins to receive sedimentation. Although the extensional event was interrupted by a short compressional event during 120 to 105 Ma, with the oceanward retreat of the trench, the area of extension gradually enlarged and rejuvenated south‐eastwards until the end of the Cretaceous. This Cretaceous extension event of the South‐eastern China Block must belong to a worldwide geological event with global significance.

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Structural and geochronological constraints for the Mesozoic nappe structures of the Taqian–Fuchun thrust zone, eastern Jiangnan orogenic belt, South China

Zhang

et al. 2023

Geological Journal

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The NE‐trending Jiangnan orogenic belt has experienced multi‐tectonic episodes since the Mesozoic separates the Yangtze Block in the north‐west from the Cathaysia Block in the south‐east. The Taqian–Fuchun thrust zone in north‐east Jiangxi Province is located in the eastern Jiangnan orogenic belt. It is considered as an essential unit to understand the geometry, kinematics and dynamics of the Mesozoic nappe structures in the eastern Jiangnan orogenic belt and an ideal region to reveal the Mesozoic tectonic evolution in South China. Here, we present new detailed structural data coupled with zircon U–Pb and apatite fission‐track dating studies, establishing a four‐stage deformation history and describing the geometry, kinematics, ages and dynamic background. The Middle–Late Triassic NW–SE compression event (D1, 243–226 Ma) is mainly characterized by regional angular unconformity between the Lower and Upper Triassic and asymmetric folding of the underlying strata. The associated regional NW–SE shortening was related to the intercontinental collision. The Middle–Late Jurassic NW–SE compression event (D2, 175–160 Ma) is characterized by the angular unconformity between the Middle Jurassic and Cretaceous and the SE‐vergent imbricate nappe structures. The shortening has been associated with the NW‐ward subduction of the Paleo‐Pacific Plate. The Late Jurassic–Cretaceous NW–SE extension event (D3, 160–67 Ma) includes the transition stage from compression to extension (160–145 Ma) and the intensive extension stage (145–67 Ma). The former is characterized by the development of the extensional detachment structures and intermediate‐acid magmatism, while the latter is characterized by the development of Cretaceous extensional sedimentary basins and A‐type granites. This extension was correlated to the slab roll‐back of the Paleo‐Pacific Plate. The Paleocene–Eocene compression event (D4, 67–35 Ma) is manifested by the thrusting of metamorphic rocks in the Shuangqiaoshan Group to the Cretaceous red beds. This shortening possibly originated from the collision between the India and Eurasian Plates. This study provides new constraints on the Mesozoic structural style and establish a reliable geochronological framework of the Mesozoic tectonic evolutions of the eastern Jiangnan orogenic belt.

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Mesozoic Thrust-Nappe and Extensional Structure Frameworks in the East Segment of Southeast Yangtze Block, Southeast China

Cited by 9 publications

References 63 publications

Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

Cretaceous growth strata in terrigenous basins in the East Yangtze Block: A response to Early Cretaceous extension in Southeast China

Timing of the initiation and duration of the Cretaceous extensional regime in South‐east China: Constraints from growth strata in terrigenous basins

Structural and geochronological constraints for the Mesozoic nappe structures of the Taqian–Fuchun thrust zone, eastern Jiangnan orogenic belt, South China

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