Laohuling Fm
Type Locality and Naming
No. 130 Team of the Zhongnan Coalfield Exploration Bureau named the Laohuling Formation in 1956. Refers to the clastic rocks located between the Shangcun Formation and the Gaopengling Formation. The Guangdong District Team (1965) was revised to the Laohuling Formation. The named section is located in the Laohuling area of Maoming City, Guangdong.
Lithology and Thickness
The lithology of this Formation is gray-white, gray-yellow gravel-bearing feldspar quartz sandstone, feldspar quartz sandstone, gray-green sandy mudstone, mudstone intercalated with the gray-white sandy conglomerate, siltstone, partially intercalated coal line, 457m thick. There is little change in lithology. The coal seam is intercalated at the bottom of No. 10 core drill , Gaozhou.
Relationships and Distribution
Lower contact
The bottom is marked by gray-white gravel sandstone at the boundary between the underlying Early Oligocene Shangcun Fm, the two are in disconformity contact.
Upper contact
The overlying Upper Pliocene Gaopengling Formation is in disconformity contact.
Regional extent
Only distributed in Maoming Basin. From the edge of the basin to the center, the lithology becomes finer. In the area from Shangcun, Gaozhou to Hongshan, Maoming City, the gravel-bearing sandstone and sandstone decrease, and the sandy mudstone increases.
GeoJSON
Fossils
Sporopollen fossil Betulaceae-Ulmaceae combination
Age
Depositional setting
River-lacustrine deposits
Additional Information