Santos and her team ran chemical tests to find out what kind of plastics are in the rocks called " plastiglomerates" .
桑托斯及其团队进行了化学测试，以弄清岩石中被称为“塑料团块”的塑料类型。
VOA慢速英语_科技
They are called " plastiglomerates" because they are made up of small parts of rock and other materials and it is held together by plastic.
它们被称为“塑料团块”，因为它们是由岩石和其他材料的小部分组成，并由塑料粘连在一起。
英语百科
Plastiglomerate
Plastiglomerate is a term that was proposed by Patricia Corcoran, Charles Moore and Kelly Jazvac for a stone that contains mixtures of sedimentary grains, and other natural debris (e.g. shells, wood) that is held together by hardened molten plastic. It has been considered a potential marker of the Anthropocene, an informal epoch of the Quaternary proposed by some social scientists, environmentalists, and geologists.