Examlex
Most fossils form in sedimentary rocks.
Branching Patterns
Descriptive of the way branching occurs in structures such as rivers, trees, or blood vessels, showing a variety of network arrangements.
Dark Minerals
Minerals rich in magnesium and/or iron that tend to have a darker color, common in mafic rocks like basalt and gabbro.
Geologic Timescale
A system of chronological measurement that relates stratigraphy to time, used by geologists to describe the timing and relationships of events in Earth history.
Mesozoic
The geological era that lasted from about 252 to 66 million years ago, including the time of dinosaurs and the break-up of Pangaea.
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