If you wish to use any of these photos, contact duncan.heron@duke.edu.
For larger view, click on picture or words.
Cave Dripstone
Carlsbad Caverns, NM
Big Room at Carlsbad
Caverns, NM (Photo © Duncan Heron)
*Stalagmite at
Carlsbad Caverns (Photo © Duncan Heron)
GW Deposits Fe Oxide
(Photo © Duncan Heron) near Castle Hayne, NC
Jelly-like Iron Ppt
(Photo © Duncan Heron) near Castle Hayne, NC
Local Cementation of
SS by Fe Oxide (Photo © Duncan Heron) near Cheraw, SC
Close up of Selected
Cementation (Photo © Duncan Heron) near Cheraw, SC
Concretion (Photo ©
Duncan Heron) Middendorf Formation, Dovesville Quadrangle, SC
More Concretions
(Photo © Duncan Heron) near Cheraw, SC
Cementation of
Grains with Calcite (Photo by Ron Perkins)
Broken Building in
Mexico (Photo by Ron Perkins)
Street Near San
Silvestro (Photo by Geo 41 Student)
Same Street
Underwater (Photo by Geo 41 Student)
Piazza San Marco
(Photo by Geo 41 Student)
Same at High Tide
(Photo by Geo 41 Student)
Another View of
Piazza San Marco (Photo by Geo 41 Student)
Walkway Next to
Canal (Photo by Geo 41 Student)
Westview Ave in
Kady Area of Houston, TX (Photo © Duncan Heron)
House on Subsidence
Fault (Photo © Duncan Heron) Houston, TX
Same House (Photo ©
Duncan Heron)
House on Fault
(Photo © Duncan Heron) Houston, TX
*Sink Collapse,
Winter Park, FL (Photo by ??)
Collapse near Tarpon
Springs (Photo by Geo 41 Student)
Edwards Aquifer
Recharge Zone (Photo © Duncan Heron) West Texas