Volcanism driven Pliensbachian (Early Jurassic) terrestrial climate and environment perturbations

Zhou, Kai; Lu, Jing; Zhang, Shuo; Yang, Minfang; Gao, Ran; Shao, Longyi; Hilton, Jason

doi:10.1016/j.gloplacha.2022.103919

Cited by 7 publications

(14 citation statements)

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“…During the Pliensbachian Stage, the tectonic subsidence of the Qaidam Basin is relatively continuous and slow (lower than 20 m/Ma) (Wang et al, 2006). However, the climate in the Qaidam Basin is characterized by multiple significant perturbations (Hu et al, 2020;Zhou et al, 2022) In Episode II, the relatively warm and semi-humid climate is continuous, and the palaeogeomorphology is relatively flat and wide because of the filling effect in Episode I. The sediments also come from the Oulongbruk Block basement lithologies to the north (Yu et al, 2017;Figure 12b).…”

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

“…In Episode III, the sediments mainly come from the East Kunlun Mountain to the south, with a long transportation distance, mixed with the local Oulongbruk Block to the north (Yu et al, 2017; in a short time, which can be attributed to the rapid climatic change at this interval (Zhou et al, 2022). During this interval, a Hg/TOC ratio peak co-occurs with high kaolinite content, C-value peak, and negative δ 13 C org shift and is associated with enhanced continental weathering (Lu et al, 2020a;Zhou et al, 2022;Figure 12). This may imply that the climatic change at this time has a close relationship with volcanism.…”

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

“…A warmer and more humid climate prevailed, leading to the widespread expansion of lake areas following increased rainfall (Zhou et al, 2022). The lake level rises abruptly, resulting in the sediment with obvious fluvial dualistic structures.…”

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

“…During the Pliensbachian Stage, the tectonic subsidence of the Qaidam Basin is relatively continuous and slow (lower than 20 m/Ma) (Wang et al, 2006). However, the climate in the Qaidam Basin is characterized by multiple significant perturbations (Hu et al, 2020; Zhou et al, 2022). Based on high‐resolution mineralogical and geochemical analyses, Zhou et al (2022) identified three warm and humid climate intervals during the Pliensbachian Stage in the study area, which are generally correlated to the increasing atmospheric CO 2 concentrations (Li et al, 2020; Figure 12).…”

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

“…Yu et al (2017) conducted a systematic study of the detrital zircon geochronology of the Lower Jurassic sediments in the northern Qaidam Basin and revealed the Early Jurassic provenance evolution. Zhou et al (2022) established a high-resolution history of climatic changes during the Early Jurassic using mineralogical and geochemical analyses in the northern Qaidam Basin. This provides a good basis for the study of the Lower Jurassic depositional evolution in the northern Qaidam Basin.…”

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Evolution of depositional environment of the Pliensbachian Stage (Lower Jurassic) coal‐bearing series in the Qaidam Basin, NW China

et al. 2023

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The Qaidam Basin is one of the major coal‐bearing basins in northeastern China with the coal seams mainly preserved in the Lower–Middle Jurassic. The Middle Jurassic sedimentary environment, sequence stratigraphy, paleoclimate, and coal accumulation in the Qaidam Basin have been extensively studied, while the sedimentary characteristics and depositional evolution of the Lower Jurassic coal‐bearing series are less well known. We systematically analysed the facies association, depositional system, basin evolution, and coal accumulation of the Early Jurassic Pliensbachian‐aged coal‐bearing series from the Dameigou section in the northern Qaidam Basin. Five lithological types have been identified, ranging from conglomerates, sandstones, siltstones, and mudstones to combustible organic rocks, which were further subdivided into 12 lithofacies. These lithofacies were grouped into four facies associations, representing the braided fluvial, meandering fluvial, lacustrine, and meandering fluvial‐lacustrine transition deposits, respectively. The Pliensbachian Stage mainly developed as a fluvial‐lacustrine depositional system and an evolution history from braided fluvial to meandering fluvial, then to lacustrine, and finally back to meandering fluvial was reconstructed. We suggest that climate change is the major controlling factor for depositional evolution during the Pliensbachian. The transition of the depositional environment from fluvial to lacustrine in the study area can be attributed to the rapid climatic change induced by volcanism at this interval.

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Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

“…During the Pliensbachian Stage, the tectonic subsidence of the Qaidam Basin is relatively continuous and slow (lower than 20 m/Ma) (Wang et al, 2006). However, the climate in the Qaidam Basin is characterized by multiple significant perturbations (Hu et al, 2020; Zhou et al, 2022). Based on high‐resolution mineralogical and geochemical analyses, Zhou et al (2022) identified three warm and humid climate intervals during the Pliensbachian Stage in the study area, which are generally correlated to the increasing atmospheric CO 2 concentrations (Li et al, 2020; Figure 12).…”

Section: Depositional Evolution In the Pliensbachian Stagementioning

confidence: 99%

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confidence: 99%

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