Innovea Technologies

Innovea Technologies

Hill Country

Hill Country Scientific

Crabtree Creek

Raleigh Bedrock Outcrop

Becrock Outcrop Photograph facing South - photo by J. Sents, 2012

The Raleigh, North Carolina area is a peneplain. The area has been devoid of any mountain building events for quite some time so the land surface has very low relief. As a result, outcrops of exposed metamorphic bedrock across the Piedmont physiographic province are few and far between. Additionally, bedrock may be covered by a literal veneer of dense soil and/or saprolite which conceals the bedrock below by mere inches.

But fear not!  I am a trained geologist and have become adept at finding these obscure bedrock outcrops.  So for reference, and in case anyone wants to go and visit, lets start with a map that I cobbed together.

Site Location of Bedrock Outcrop along US-401 South, Raleigh, North Carolina – photo by J. Sents, 2012

I used the Wake County iMAPS GIS [Beta] for the base layers used to create the map above.  The location presents itself as an unpaved, unmarked parking lot.  Along the southern edge of the lot, a stand of trees and bushes conceals the exposed bedrock.  So a few days after the initial identification of this site, I made first contact with my camera and compass.

Bedrock Outcrop Photograph facing South – photo . . . → Read More: Raleigh Bedrock Outcrop

I Found a New Outcrop

It was hiding in plain sight.  Let me get through some other issues and then I’ll post some pics, the location, and the structural information…

Nutbush Creek Fault near Lassiter Mill Dam

So let it begin.  Let me tell you something about central North Carolina.  Outcrops are as scarce as hens teeth.  But you can find them.   You can find them if you look hard enough, and sometimes, when not looking at all.  They certainly like to hide in plain sight.

Figure 1. Facing west along Crabtree Creek toward Old Lassiter Mill Dam – photo by J. Sents

Not to worry though.  I am a trained geologist, so I’ll lead you through it all painlessly.  Let’s start with Lassiter Mill Dam.  Now, I’m probably going to make this a series of posts that start from the “Big Picture”, and then we can zoom into the all gory details.  I figure since this forum is all about having some fun while learning something, it would just be easier on the eyes and brain.  Let’s get it going.

The site of the Old Lassiter Mill is located about 3.5 miles north of downtown Raleigh, North Carolina as a crow flies.  All that remains of the old grist and saw mill complex is a dam and mill race—a structure used to redirect and concentrate water flow toward a water wheel. The dam is built . . . → Read More: Nutbush Creek Fault near Lassiter Mill Dam