| NOVA Annandale |
Geology | Bentley | Scientific illustrations | Cross-cutting block |
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Which came first? Principles of relative dating allow geologists to deduce
which of two rock units is older on the basis of relations like cross-cutting.
I developed this image as an explanatory diagram through my work as Geoscientist-in-the-Park
for C&O Canal National Historical Park.
I used CorelDraw to create this image. If you are interested in commissioning
a freelance illustration, please send me an e-mail at 