Chen brought back samples of the rock layers. Detailed observation and analysis revealed that the glass-like black, white and brown rocks were created in a high-temperature explosion. The samples contained large amounts of nickel, which was absent from the neighboring strata.
陳肇夏從湖畔帶回碎屑物標本，仔細篩選與觀察分析後，發現湖畔散落的碎石，是經過高溫爆炸後燃燒剩下黑、白、褐等 3 色玻璃狀石塊，且成分中含有比例極高的鎳，而附近的岩石卻無此跡象。