Foluo Fm
Type Locality and Naming
Named in 1960 by Team 765 of Guangdong Geological Bureau. The named section is located in the 5th drill hole (CK5/37 drill hole) of Fuluoxin'an Village, Jiusuo, Ledong County, Hainan.
Synonym: In 1978, the Nanhai Petroleum Company created the Dengloujiao Fm; in 1981, Kou Caixiu and Hu Pingzhong renamed the Foluo Fm in the Beibu Gulf and Leiqiong Regions to the Dengloujiao Fm. However, "The Tertiary System of China" (Li Yuntong et al., 1984) and other scholars (Qin Guoquan, 1982) still use the Foluo Formation; Lei Yizhen et al. (1992) classified the Foluo Fm to as Huangliu Gr according to the Tertiary stratigraphic system of the Yinggehai Basin. Since the Foluo Formation was first created and has been widely used, this name is still retained in this dictionary.
Lithology and Thickness
Lower part of the lithology is mainly white kaolinite sandstone and glutenite; Upper part is gray-green or brown mudstone, silty mudstone, and gravel sandstone, and the top is marked by calcareous gravel. Ca. 73 m in thickness.
Relationships and Distribution
Lower contact
This Formation has a disconformity on the Yanshanian (Jurassic) granite. Regionally, the next unit is the coeval Dengloujiao Fm overlying the Jiaowei Fm.
Upper contact
Regional extent
GeoJSON
Fossils
No record
Age
Depositional setting
Coastal and neritic deposits
Additional Information