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What is a semipermeable membrane?
Ancient Mountain Front
The original forward edge or boundary of a mountain range, often eroded and buried, indicating past tectonic and geomorphological activity.
Dark Gray Shale
A dark-colored, fine-grained sedimentary rock composed mainly of clay minerals, typically formed in low-energy environments like deep water basins.
Stratigraphic Section
A representation or diagram that shows the vertical sequence of rock layers in an area, detailing their composition, age, and relationship to one another.
Transgression
A geological event during which sea level rises relative to the land, causing the shoreline to move inland across the continent.
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