Friday fold: faulted fold
The Friday fold features fine faults from a forgotten font, and a failed foto-finding forage.
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The annual summer routine of Mr. Callan X. Bentley
Callan gets ready for a summer of travels out in the Rocky Mountains, including teaching a field geology course, participating in a workshop about teaching energy, visiting the Burgess Shale, and… getting married!
The grave of John Wesley Powell
Callan visits the grave of John Wesley Powell, second director of the USGS and explorer of the Grand Canyon, on an afternoon in Arlington National Cemetery.
A tidy little quartz crystal
A doubly-terminated quartz crystal (or “Herkimer diamond”) is found on a hike in the Silurian sandstones of Virginia’s Valley & Ridge province.
New hallway display: geologic provinces of northern Virginia
Callan shows off a new hallway display in his building at Northern Virginia Community College, showcasing the numerous geologic provinces of northern Virginia (as well as adjacent mid-Atlantic states).
The grave of Charles Walcott
Callan pays a visit to the grave of celebrated paleontologist and geological administrator Charles D. Walcott.
Some cool rocks from DGMR’s rock garden
A brief tour of some cool rocks, shown in close-up, from the rock garden at the Commonwealth of Virginia’s Department of Geology and Mineral Resources in Charlottesville, Virginia, presented as a follow-on to the gigapan of the garden shown a month ago. The post features close-ups of plumose structure in slate, epidote slickensides, and graded bedding in ancient rhythmites.
Pamukkale 3
Callan shares a third batch of photos from the stunning travertine terraces at Pamukkale (“cotton castle”) in central Turkey, near the town of Denizli. Travertine structures on numerous scales are shown, adorned with flowers, tourists, and ducks.
Pamukkale 1
Callan shares some photos from his time last summer at the massive travertine deposits at Pamukkale, Turkey.
Friday fold: Turkish chert
The Friday fold is a contorted chert sample from Turkey.