It's seen in mines and rock outcrops around the world.

它们遍布世界各地裸露地表的矿藏和岩石中。

He scoured the country for rock outcrops which were the same age as Chicxulub.

他在这个国家遍寻与希克苏鲁伯同年代的裸露岩石。

Keller and her colleague, Wolfgang Stinnesbeck, investigated fifty rock outcrops in the same region.

Keller和她的同事Wolfgang Stinnesbeck研究了同一地区的50块裸露岩石。