Tuesday, March 31, 2026

Appalachian Trail - type II fun

Shenandoah National Park Excellent examples of columnar jointing are found in Shenandoah National Park in Precambrian (approximately 570 million year old) greenstones. Greenstones are lightly metamorphosed basalt. These lavas were erupted from rift zones formed during the breakup of the Rodinia supercontinent.

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A weekend getaway