In the summer of 1979, the authors discovered from the core of Well No.1 in Shunyi (顺义) County, Beijing, China, at a depth of 182—327 m, more than 40 glass globules with diameters of 0.17—0.65 mm. According to the...In the summer of 1979, the authors discovered from the core of Well No.1 in Shunyi (顺义) County, Beijing, China, at a depth of 182—327 m, more than 40 glass globules with diameters of 0.17—0.65 mm. According to their stratigraphic ages, occurrences, forms, physical properties and main chemical components, we consider that they are microtektites. These microtektites are preserved in the middle and lower parts of Zhaili (翟里) Formation of the Mid-Pleistocene Series. Their litho-展开更多
In the summer of 1979 we found some insect fossils in the drill cores near the River Wenyu, in the southwest of County Shunyi, Boijing. They were discovered in the silt clay of Xiadian Formation, lower Pleistocene.The...In the summer of 1979 we found some insect fossils in the drill cores near the River Wenyu, in the southwest of County Shunyi, Boijing. They were discovered in the silt clay of Xiadian Formation, lower Pleistocene.These insect fossils are of Asilldae (gen. et sp. indet.), Harpalidae (gen. et sp. indet.), Lyetidae (gen. et sp. indet.) and Melolonthinae, Subgen. Holotrichia Reitter. The latter is a new species of the subgenus Holotrichia (s. str.) under the name of Holotrichia (s. str.) beijingensis Wang sp. nov.. It has the same eharacteristics with subgenus Holotrichia as well as the modern Holotrichia (s. str.) szechuanensis in spite of some difference.展开更多
文摘In the summer of 1979, the authors discovered from the core of Well No.1 in Shunyi (顺义) County, Beijing, China, at a depth of 182—327 m, more than 40 glass globules with diameters of 0.17—0.65 mm. According to their stratigraphic ages, occurrences, forms, physical properties and main chemical components, we consider that they are microtektites. These microtektites are preserved in the middle and lower parts of Zhaili (翟里) Formation of the Mid-Pleistocene Series. Their litho-
文摘In the summer of 1979 we found some insect fossils in the drill cores near the River Wenyu, in the southwest of County Shunyi, Boijing. They were discovered in the silt clay of Xiadian Formation, lower Pleistocene.These insect fossils are of Asilldae (gen. et sp. indet.), Harpalidae (gen. et sp. indet.), Lyetidae (gen. et sp. indet.) and Melolonthinae, Subgen. Holotrichia Reitter. The latter is a new species of the subgenus Holotrichia (s. str.) under the name of Holotrichia (s. str.) beijingensis Wang sp. nov.. It has the same eharacteristics with subgenus Holotrichia as well as the modern Holotrichia (s. str.) szechuanensis in spite of some difference.
