Cyclostratigraphic constraints on the duration of the Datangpo Formation and the onset age of the Nantuo (Marinoan) glaciation in South China

Bao, Xiujuan; Zhang, Shihong; Jiang, Ganqing; Wu, Huaichun; Li, Haiyan; Wang, Xinqiang; An, Zhengze; Yang, Tianshui

doi:10.1016/j.epsl.2017.12.001

Cited by 118 publications

(37 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…717–659 Ma “Sturtian” and ca. 650–635 Ma “Marinoan”, defining Cryogenian time (Bao et al., ; Macdonald et al., ; Rooney, Strauss, Brandon, & Macdonald, ; Shields‐Zhou, Porter, & Halverson, ). The glacial‐periglacial origin of Cryogenian diamictites is widely accepted and the snowball Earth hypothesis has gained favour since globally synchronous glacial terminations are increasingly supported radiometrically (Cox et al., ; Rooney et al., ).…”

Section: Introductionmentioning

confidence: 99%

Hit or miss: Glacial incisions of snowball Earth

et al. 2019

View full text Add to dashboard Cite

Estimated at ~58 Ma in duration, the Sturtian snowball Earth (ca. 717–659 Ma) is one of the longest‐known glaciations in Earth history. Surprisingly few uncontroversial lines of evidence for glacial incisions associated with such a protracted event exist. We report here multiple lines of geological field evidence for deep but variable glacial erosion during the Sturtian glaciation. One incision, on the scale of several kilometres, represents the deepest incision documented for snowball Earth; another much more modest glacial valley, however, suggests an erosion rate similar to sluggish Quaternary glaciers. The heterogeneity in snowball glacial incisions reported here and elsewhere was likely influenced by actively extending horst‐and‐graben topography associated with the breakup of supercontinent Rodinia.

show abstract

Section: Introductionmentioning

confidence: 99%

Hit or miss: Glacial incisions of snowball Earth

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Tuning the Ca and Fe/Ti series to the interpreted 405-ka longeccentricity signal (Fig. 5) yielded a suite of frequencies that match well with the predicted orbital parameters in the early Ediacaran (Table 1) [22,41,46,52]. The power spectrum of the tuned Ca series reveals clear peaks with periods matching eccentricity (405, 128, 100, and 82-ka), and obliquity (1.2-Ma, and 36, 29 and 26-ka), these cycles present above the 95%-99% confidence level (Fig.…”

Section: Power Spectra Analysis In Time-domainmentioning

confidence: 54%

“…560 Ma. Other cyclostratigraphic analyses of Cryogenian and mid-Proterozoic strata in South China have also interpreted the full suite of Milankovitch cycles [22,23].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Astronomical time scale for the lower Doushantuo Formation of early Ediacaran, South China

et al. 2018

View full text Add to dashboard Cite

“…Therefore, MS is a commonly used tool for cyclostratigraphy studies and like many previous studies. Like in many (Bao et al, 2018;Boulila et al, 2010;Boulila et al, 2014;Ellwood et al, 2013;Li et al, 2017;Li et al, 2018;Wu et al, 2012;Wu et al, 2013), orbital cycles are clearly encoded in the detrended MS series in the HTTL section (Figures 7b and 7c). The subchron C4n.2n-1r was initially reported by Evans and Channell (2003; Figure 9a).…”

Section: Discussionmentioning

confidence: 83%

Confirmation of a Late Miocene Subchron C4n.2n‐1r From the Eastern Qaidam Basin in the NE Tibetan Plateau

Gao

Nie

et al. 2019

JGR Solid Earth

View full text Add to dashboard Cite

Refining reversal ages and improving reversal patterns for the geomagnetic polarity timescale are a major task for the paleomagnetic community. The Late Miocene is a period during which the geomagnetic field experienced frequent perturbations and which dramatic environmental changes occurred. Thus, improved (sub)chron definition during this period will enable to provide additional age control points for better understanding age of paleoenvironmental changes. A prior study of the Late Miocene C4n.2n magnetic polarity zone at Ocean Drilling Program Site 1092 in the sub‐Antarctic South Atlantic Ocean has revealed the potential existence of a subchron (C4n.2n‐1r). However, this subchron has not been incorporated into the geomagnetic polarity timescale yet because its existence has not been confirmed. Moreover, the low sediment accumulation rate of 1.32 cm/kyr at Site 1092 hampers a confident estimation of the age and duration of this subchron. Here we present a high‐resolution paleomagnetic data set covering C4n.2n from the Huaitoutala section in the eastern Qaidam Basin, Northwest China, with an average sediment accumulation rate of ~22 cm/kyr. Nine reversed declination/inclination data points define a subchron near the top of C4n.2n, similar to age of reported C4n.2n‐1r at Ocean Drilling Program Site 1092. Cyclostratigraphy of the magnetic susceptibility record of the Huaitoutala section suggests that the age and duration of the C4n.2n‐1r are 7.7612–7.7554 Ma and 5.8 ± 2.1 kyr, respectively. Confirming the existence of C4n.2n‐1r from a northern hemisphere terrestrial site suggests that two geomagnetic reversals bounding this subchron have global imprints and that this subchron can potentially serve as marker for stratigraphic correlation.

show abstract

Cyclostratigraphic constraints on the duration of the Datangpo Formation and the onset age of the Nantuo (Marinoan) glaciation in South China

Cited by 118 publications

References 46 publications

Hit or miss: Glacial incisions of snowball Earth

Hit or miss: Glacial incisions of snowball Earth

Astronomical time scale for the lower Doushantuo Formation of early Ediacaran, South China

Confirmation of a Late Miocene Subchron C4n.2n‐1r From the Eastern Qaidam Basin in the NE Tibetan Plateau

Contact Info

Product

Resources

About