Single crystals of zircon began to add new information about the early earth in the 1980s, when a few rare grains from the Jack Hills and Mount Narryer regions of Western Australia became the most ancient terrestrial material known at that time—the oldest
Single crystals of zircon began to add new information about the early earth in the 1980s, when a few rare grains from the Jack Hills and Mount Narryer regions of Western Australia became the most ancient terrestrial material known at that time—the oldest
1980年代，在澳洲西部的杰克丘与纳瑞尔山区发现了几颗稀有的锆石结晶，定年结果可追溯到43亿年前，因此成为地球上已知最古老的物质。