Discussion of Yang et al. (2017, Acta Geologica Sinica 91:749–750) A new discovery of the Early Cretaceous supercritical hyperpycnal flow deposits on Lingshan Island, East China. (27th January 2020)

• Record Type: Journal Article
• Authors: Shao, Zhufu; Zhao, Bing; Howell, John; Luan, Xiwu; Maxwell, Gail; Ran, Weimin; Liu, Zexuan; Zhang, Wenxin
• Is Part Of: Geological journal. Volume 55:Number 7(2020)
• Page Start: 5508
• Page End: 5513
• Publication Date: 2020-01-27
• Subjects: Early Cretaceous -- hyperpycnal flow -- Lingshan Island -- supercritical flow -- tempestites; Geology -- Periodicals; 551
• DOI: 10.1002/gj.3755
• Languages: English
• ISSNs: 0072-1050

Abstract

Abstract : Yang et al ., Acta Geologica Sinica‐English Edition, 91(2), pp. 749–750 claim that they discovered supercritical hyperpycnal flow deposits in the Early Cretaceous strata on Lingshan Island, East China. We would like to discuss this paper under the following topics: (a) the terminology of "supercritical hyperpycnal flow, " (b) hyperpycnal flow deposition, and (c) supercritical flow deposition. Our aim is twofold in that the following debate will help unravel the complexities associated with the controversy around the paleosedimentary environment and sediment dynamic processes of the early Cretaceous deposits on Lingshan Island, in addition to providing an understanding of hyperpycnal flow and supercritical flow deposits. The Beilaishi section deposits on Lingshan Island are more likely storm‐induced tempestites within the lacustrine basin delta front and associated deep lacustrine turbidites. Frequent earthquakes due to tectonic‐magmatic activity are the most likely triggers for lacustrine storms.