Surface of quarried block in the Catoctin Formation. Hammer is ~35 cm long.
This is going to be trouble…
Annotated view. g- greenstone (actinolite schist), m- marble, v- vein composed of carbonate minerals.
Boudins or Pillows?
August 14, 2016 by ·
A Resource for Information on the Commonwealth's Geology
What’s New in Virginia Geology
Virginia is for Lavas- The Catoctin Formation
Many of the highest peaks in Shenandoah National Park (including Hawksbill, Stony Man, and Hightop Mountain, just to name a few) are underlain by distinctive bluish-green rocks that were once ancient lava flows (Virginia is for Lavas!), and are part of a geologic unit known as the Catoctin Formation. From the presidential retreat at Camp David to Jefferson’s […]