Advertisement

You are browsing the archive for 2012 June 05.

5 June 2012

A clutch of amygdules

Callan presents a collection of well-exposed amygdules, seen along the Dark Hollow Falls trail in Shenandoah National Park, Virginia. These white dots on a green background are the signatures of (1) Iapetan rifting, and (2) Alleghanian metamorphism.

Read More >>

2 Comments/Trackbacks >>