U.S. Geological Survey: Science for a Changing World - USGS visiaul identifier and link to main Web site at http://www.usgs.gov/

Photograph of xenolith of medium- to coarsegrained foliated leucocratic granitoid (Ylg) within foliated medium-grained biotite granitoid gneiss (Ybg) at Stop 13. For more detailed explanation, contact Richard Tollo at rtollo@gwu.edu
Figure 11. Photograph of xenolith of medium- to coarse-grained foliated leucocratic granitoid (Ylg) within foliated medium-grained biotite granitoid gneiss (Ybg) at Stop 13. Hammer handle, oriented parallel to foliation in the gneiss, is 82 cm (32 in) long.
U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip2/fig11.html
For more information, contact Richard Tollo
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