原石器时代

The protolithic phase is crucial for understanding the geological history of an area.
原岩阶段对于理解一个地区的地质历史至关重要。
In this region, the protolithic rocks date back to the Precambrian era.
在这个地区，原岩可以追溯到前寒武纪时期。
The protolithic materials in this area have been heavily metamorphosed over time.
这一地区的原岩物质经过长时间的变质作用。
The study of protolithic rocks can provide insights into the early Earth's environment.
研究原岩可以揭示早期地球的环境。
The formation of protolithic rocks involves the solidification of minerals from magma.
原岩的形成涉及从岩浆中结晶出矿物质的过程。
Protolithic rocks often contain fossils that offer clues about ancient life forms.
原岩中经常含有化石，这些化石提供了关于古代生物的线索。
The protolithic layer under the sedimentary rock provides important clues for geologists.
沉积岩下的原岩层为地质学家提供了重要线索。
The discovery of protolithic rocks in this area has led to new theories about the Earth's history.
在这个地区发现的原岩导致了关于地球历史的新理论。
The process of forming protolithic rocks is a key part of the rock cycle.
形成原岩的过程是岩石循环中的关键部分。
The study of protolithic rocks helps scientists understand how continents and mountains form.
研究原岩有助于科学家了解大陆和山脉是如何形成的。