地质历史时期主要是指现代以前的即第四纪全新世以前的各个地质时期。
地质遗迹是地质历史时期形成并遗留下来的珍贵自然遗产。
Geology remains are precious natural resources formed and remained in the geological history.
银矿是在一定的地质历史时期以及特定的地质环境中，受到一些重要的地质事件影响而形成的。
Silver deposits are formed by suffering some important geological events in a certain geological history period and special geological environment.
浅部地下水主要由现代区内降水补给形成，而深部地下水则可能由地质历史时期降水补给形成。
The shallow groundwater is mainly recharged by modern and local precipitation, and the deep groundwater might be originated from infiltration recharge of ancient precipitation.
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