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Net exports equal
Unconformity
A surface in the rock record representing a period of erosion or non-deposition, separating younger strata from older ones.
Igneous Intrusion
The penetration of magma through pre-existing rock layers, solidifying below the earth's surface and forming igneous rocks.
Depositional Contact
The surface or boundary separating younger sediment or rock layers from older ones where deposition has occurred.
Surface Representing
Typically refers to a graphical or mathematical representation of the physical characteristics or topography of an area's surface.
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