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Lava Butte is a geologically young cinder cone at the north end of a series of vents radiating from Newberry Volcano. The eruption that formed the cinder cone also issued an extensive aa lava flow, seen here in the foreground near its southeast margin. Edi and Berti went exploring and made friends with a couple of the ...
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- 633
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- 18
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These are exposures of Jurassic diabase which can be found on the north side of Conway Robinson State Forest near Gainesville, Va. Conway Robinson is located near the center of the Culpeper Basin, a Mesozoic rift basin related to crustal stretching during the break-up of Pangea. This diabase was the source of the basal...
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- 257
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- 13
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Thin section of lunar basalt collected by Apollo 12. Field of view is approximately 8 by 6 mm. Crossed polars. Taken with the automated imaging system at Williams College.
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The source rock for the green sand GigaPan posted yesterday: gigapan.org/gigapans/98840 Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here: gigamacro.com/gigapixel-macro-imaging-system
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Ten times the size of Niagara, Dry Falls is thought to be the greatest known waterfall that ever existed. According to the current geological model, catastrophic flooding channeled water at 65 miles per hour through the Upper Grand Coulee and over this 400-foot (120 m) rock face at the end of the last ice age. At this ...
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- 389
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White Horse Hills is a complex of cinder cones that were built by a series of eruptions from multiple vents. They rise about 900 feet above the surrounding terrain.
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Sunset Crater is a cinder cone that erupted about 1,000 years ago. It is about 1,000 feet tall. The cinder cones to the right of Sunset Crater are O'Leary Peak and Black Mountain
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- 317
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- 1
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Whitman College geologists investigate beach outcrops of invasive basaltic dikes and sills just south of Seal Rock State Park on Oregon coast
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Latourell is unique among the best-known Columbia Gorge waterfalls, in the way that it drops straight down from an overhanging basalt cliff.
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Sunrise in NW Namibia in an area characterised by it's flat topped Basalt mountains.
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- 655
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