The Lunan stony meteorite recovered from Yunnan Province is an ordinary chondrite of high-iron Hs type. Thirteen kinds of minerals have been identified, of whic
Shixiahe ignimbrites in Gansu Province were formed as a result of the fracture eruption during Mesozoic time. They are typical welded rocks, the cooling element
Fluorescent slice observations have revealed a considerable amount of organic matter enclosed in carbonate minerals, most of it giving off yellow-brown fluoresc