地质学家们重新考察了格陵兰西南部一系列古老的岩石,发现了板块构造史上最为古老的、具有代表性的岩石。2007年3月份,该发现发表在《科学》杂志上,在此之前研究人员一直认为,在大约25亿年前地球上的陆地才开始凝固的。这个新发现表明,陆地开始凝固的过程要早得多,时间上更接近 Geologists revisited a series of ancient rocks in southwestern Greenland and discovered the oldest and most representative rock in the plate tectonics history. In March 2007, the discovery was published in the journal Science, until researchers thought it was only about 2.5 billion years ago that the land on Earth began to solidify. This new finding shows that the process of land setting begins much earlier and closer in time