glacial deposits 是什么意思

	1.	Worse , below it was a not - very - firm glacial deposit hundreds of meters thick 更坏的是，在它下面是不很坚固的数百米厚的冰状沉积。
	2.	The central plain , which is broken in places by low hills , is extensively covered with glacial deposits of clay and sand 被低矮的丘陵分割的中心的平原覆盖着冰河时期留下的粘土和沙子的堆积物。
	3.	Cold event deposits were developed in the nantuo formation of the lower sinian and should be continental glacial deposits in a low - latitude and low - altitude area 冷事件沉积产物为下震旦统南沱冰碛层，属低纬度低高程的大陆冰川沉积。
	4.	In the older rocks below these glacial deposits are detrital uraninite and pyrite , two minerals considered evidence for very low levels of atmospheric oxygen 这些冰河沉积物下方的较老岩层，是沥青铀矿与黄铁矿碎屑；这两种矿物被认定为大气中氧气极为稀少的证据。
	5.	This succession was based primarily on a series of deposits and events not directly related to glacial and interglacial periods , rather than on the more usual modern method of studying biological remains found in interglacial beds themselves interstratified within glacial deposits 这一顺序主要是根据与冰川期和间冰期没什么直接关系的一套沉积物或现象而排出的，现代更为通用的方法则是研究发现于间冰期河床的生物化石。

glacial deposits是什么意思