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

Photographs of rocks of the Marburg Formation at Stop 2, looking north, showing isoclinal folds of thin metagraywacke and phyllite transected by cleavage that dips steeply to the northwest. For a more detailed explanation, contact Michael Kunk at mkunk@usgs.gov.   Closeup view of vein quartz transposed in the early folds and foliation. For a more detailed explanation, contact Michael Kunk at mkunk@usgs.gov.
Figure 9. Photographs of rocks of the Marburg Formation at Stop 2, looking north. A, Isoclinal folds of thin metagraywacke and phyllite (with axial plane cleavage?) are transected by cleavage that dips steeply to the northwest (left). Pen is 14 cm long. B, Closeup view of vein quartz transposed in the early folds and foliation. Pen segment shown is 10 cm long.
U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip5/fig9.html
For more information, contact Michael Kunk
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