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Discovery of the Late Mesozoic Slump Beds in Lingshan Island, Shandong Province, and a Pilot Research on the Regional Tectonics
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摘要

///Lingshan Island, the highest island in northern China, is situated in the nearshore water to the southeast of Jiaonan City, Qingdao, Shandong Province, China. The authors of this paper investigated the island and found the distal turbidites and interbedded slump deposits in the Mesozoic clastic rocks. The horizon has been treated, in the geologic map, as the Laiyang Formation, the lowermost formation in the Cretaceous. However, the deposits might be formed in Jurassic according to pollen analysis. The slump structures are mainly synsedimentary slump folds, containing other synsedimentary deformation structures, such as synsedimentary boudinages, synsedimentary stretching lineations and synsedimentary duplexes. The slump structures indicate that the slump sediments were transported from southeast to northwest. The graded intervals of the rhythmites are mainly fine sands to silt and the mud intervals are black shales, showing the characteristics of distal turbidites in a remnant ocean basin between South China Block and North China Block.


    

 


    

 

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