Falls Lake Trail - Section 8

Figure 8-C1.  Underside of west-dipping ledge of schist just above bridge at trail point 8-C.  Foliation dips about 45 degrees to the west (away from viewer).  Dark splotches are amphibolite pods contained in schist.

schist

Falls Lake Trail - Section 8

Figure 8-C2.  Football-shaped amphibolite pod enclosed by feldspar-rich schist.  Located in large block to the right of the trail about 100 yards beyond the bridge at trail point 8-C.

amphibolite

Falls Lake Trail - Section 8

Figure 8-D1.  Schist ledges in creek above bridge at trail point 8-D.

Falls Lake schist

Falls Lake Trail - Section 8

Figure 8-D2.  Close-up of schist sample from location of Figure 8-D1.  Small rounded reddish crystals are garnet; long black crystals are hornblende.

Falls Lake schist

Falls Lake Trail - Section 10

Figure 10-B.  Outcrop on hilltop at trail point 10-B.  Foliation dips to the right (west).

Falls lake rocks 10-B

Falls Lake Trail - Section 10

Figure 10-D.  West-dipping ledge outcrops of metamorphosed quartz diorite of the Beaverdam igneous complex, part of the Carolina terrane.

quartz diorite - Falls Lake area

Falls Lake Trail - Section 11

Figure 11-J.  View across inlet at trail point 11-J.  The large boulders are (or were) encased in soft reddish-brown sandstone or siltstone, some of which has been weathered and eroded away, leaving the boulders behind.  The overall sedimentary deposit is a boulder conglomerate, deposited in the alluvial fan environment along the Jonesboro fault during the Triassic period, some 220 million years ago.

Link to additional photographs of Triassic conglomerates.

Triassic sediments Falls Lake area

Falls Lake Trail - Section 11

Figure 11-K.  Outcrop at trail point 11-K.  This silicified rock, with fracture surfaces that dip steeply to the northwest (left), is part of the Carolina terrane.  These outcrops lie right along the Jonesboro fault, with Triassic sedimentary rocks occurring to the left.

silicified rock

Falls Lake Trail - Section 11

Figure 11-R.  Fault breccia in flat outcrop in creek at trail point 11-R. 

fault breccia