Geologist Gerard Bond noticed that some of the sediment grains were stained with iron oxide, evidence that they originated in locales where glaciers had overrun outcrops of redsandstone.
地质学家杰拉德·邦德注意到，一些沉积物颗粒被氧化铁染色，这表明它们起源于冰川覆盖红砂岩露头的地方。
2
Another significant discovery was withering of the monument's white marble and redsandstone structure.
另一个重大发现是，陵墓的白色大理石和红色砂岩结构正在销蚀。
3
Lightning flashes over Ayers Rock, a landmark redsandstone monolith that draws tourists to Australia's center.