Author(s)

Jiahao Zhang ¹, Shoujun Li ¹, Zhenyu Zhang ¹, Xiangyu Zhang ²

Affiliation(s)

¹ School of Earth Science & engineering, Shandong University of science and technology, Qingdao, Shandong 266590, China
² Key Laboratory of stratigraphy and palaeontology, Ministry of natural resources, Institute of geology, Chinese Academy of Geological Sciences, Beijing 100037, China

Corresponding Author

Shoujun Li

ABSTRACT

Constrained by geochronological and paleontological data, this paper conducts a comparative study on the Shuinan Formation and the Qingdao Lingshan Island Formation in the Laiyang Sag from the aspects of paleoenvironment, paleoclimate characteristics, and soft sediment deformation structures. The research results are as follows: (1) The minimum detrital zircon age values of the lower and upper strata of the Lingshan Island Formation are consistent with the minimum detrital zircon age values of the lower and upper strata of the Shuinan Formation within the error range, both belonging to the Early Cretaceous Aptian period; (2) The paleo-salinity of the Shuinan Formation and the Lingshandao Formation gradually decreased as the strata changed from old to new, while the paleo-salinity of the Wawukuang Formation and Zhifengzhuang Formation changed from old to new as the strata changed. (3) Both sets of strata were affected by seismic activity in the early stage of deposition, resulting in the development of soft sediment deformation structures; (4) The types of paleontology in the two sets of strata are the same. Therefore, the authors believe that the layers of the Lingshandao Formation and the Shuinan Formation are comparable, and the special structure, paleoenvironment and paleoclimate characteristics can be used as the basis for stratigraphic comparison and division.

KEYWORDS

Laiyang Sag, Laiyang Group, Shuinan Formation, Lingshan Island Formation, sedimentary age

CITE THIS PAPER

Jiahao Zhang, Shoujun Li, Zhenyu Zhang, Xiangyu Zhang, Comparison of Lingshan Island Formation in Qingdao, Shandong Province and Shuinan Formation in Laiyang Sag. Environment, Resource and Ecology Journal (2022) Vol. 6: 51-61. DOI: http://dx.doi.org/10.23977/erej.2022.060110.

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