You are browsing the archive for 2011 September 28.

28 September 2011

Roadside wonders of Route 287

Northern Colorado’s route 287 connects Fort Collins, Colorado with Laramie, Wyoming. Along its length, it displays roadcuts into Archean-aged basement complex. Two of these outcrops are featured in this post: one metamorphic (mostly), and a second igneous (mostly), with some intriguing polka-dotted plutons.


17 Comments/Trackbacks >>