Field Excursion Introduction for IGCP 679 1<sup>st</sup>International Symposium: Progress in Cretaceous Geology in Shandong Province, China

• 作者: Fuzhong Zhang Gang Li Jie Qin Kemin Xu Xiuzhang Li Xueqiang Zhu Youping Wang Zhenguo Ning
• 来源期刊: 地质学期刊(英文)
• 学科: 地球科学
• 关键词: CRETACEOUS Lithostratigrphy CHRONOSTRATIGRAPHY Shandong Province China
• 年，卷（期）: 2019,（10）
• 页码范围: 722-725
• 页数: 4页
• 分类号: P5

摘要

The non-marine Cretaceous sequences are well developed in the relict basins, i.e. the Luxi basin in the west, and the Jiaolai basin in the east of Shandong Province. The Lower Cretaceous Santai Formation (140 - 136 Ma) in the Luxi basin contains aeolian dune deposits, which were formed under the control by westerly. The Cretaceous strata of the Jiaolai basin are divided into three groups: i.e. in ascending order, the Laiyang, Qingshan and Wangshi groups. New SHRIMP zircon U-Pb radiometric dating data demonstrated six Cretaceous volcanism episodes. The lower part of the Wangshi Group should be assigned to the upper Lower Cretaceous. An Ir anomaly recovered in the lower Jiaozhou Formation suggests that the Cretaceous/Palaeogene boundary would be in the interval between 537.3 - 537.4 m in the borehole JK1. At last the detailed information about the pre-symposium field excursion was introduced.