Recently a new technique, developed by geolo­ gists of the U.S. Geological Survey for dating obsidian, has given us ad­ ditional information about the latest volcanic eruptions within the Newberry Caldera. (1.8) 13.0: STOP 1 at top of Lava Butte (elevation 4,970 ft). Turn west to Lava Lands and drive by and across the Lava Butte flow to top of Lava Butte. Geological Summary: The Lava Butte shield volcano, also known as Rocky Butte, lies south of Jordan Craters, and is 0.03-0.09 million years old (Hart and Mertzman, 1983). TH: From the Benham Falls campground, cross FR9702 and the railroad tracks, and briefly climb to a plateau at .8mi then ascend moderately to a doubletrack at 2.7mi and continue ascending moderately to the Lava Butte road. Representative examples include Lava Butte (morphology rating = 1), Pumice Butte (morphology rating = 4), and Hunter Butte (morphology rating = 7). Simplified geologic map showing the successive lava flows from Lava Butte, the Gas-Line flows, tephra plumes associated with the lava flow-producing eruptions, and locations where the lava flows blocked and altered the course of the ancestral Deschutes River … The basaltic andesite flow derived from Lava Butte extends northward more than 5 miles and westward 3 miles to the Deschutes River. Within a 13-mi Ie radius of Kelly Butte (Plate 1) there are over 32 volcanic vents; within c 20-mile radius centered at Troutdale there are 90 volcanic centers. Volcano and Lava Butte. The Lava Butte shield volcano, also known as Rocky Butte, lies south of Jordan Craters, and is 0.03-0.09 million years old (Hart and Mertzman, 1983). Another unnamed shield volcano lies to the east of Lava Butte. The slightly older Clarks Butte shield lies to the north and has been dated at 0.25 million years. The Lava Lands Visitor Center of Newberry National Volcanic Monument is located at its base. Shaded relief maps were used to visually rank each cone in the data set according to qualitative appearance of shape, slope configuration, and vent morphologies (Table 1). Lava Butte - Northwest Rift Zone High-altitude aerial photographs show amore-or-Iess continuous zone 1977, Geologic map of Oregon east of the 121 meridian: U.S. Geological Survey Miscellaneous Investigations Map I-902, scale 1,500,000. Lava Butte Area Topo Map. The geological feature known as a "butte" (French for "small hill") is quite common to Earth, and planets like Mars as well. 1974, Some implications of Late Cenozoic volcanism so geothermal potential in the High Lava Plains of south-central Oregon: The Ore Bin, v. 36, no. A two-phase eruption formed Lava Butte about 7,000 years ago. Located on the north flank of the Newberry National Volcanic Monument, what is now Lava Lands was created about 7,000 years ago after a volcanic explosion of Lava Butte. canism in the Portland area. Another unnamed shield volcano lies to the east of Lava Butte. Details The slightly older Clarks Butte shield lies to the north and has been dated at 0.25 million years. Geological Summary: The Black Butte Crater lava field (formerly Shoshone lava field) is the westernmost of the young lava fields of the Eastern Snake River Plain. 7, p. 109-119. Note that the lava flow emerges from the south side of the butte. /I/.ost of these were originally small cinder cones like Pilot Butte and Lava Butte near Bend, Oregon, but It lies north of Twin Falls, Idaho and created an L-shaped lava flow 2-to-5 km in width that extends 60 km S and then west. A miles-wide sea of jagged lava rock was left behind creating a unique geological landscape that served as that training ground for moon-bound astronauts. Lava Butte cinder cone rises about 500 feet above its own rough surface lava flow on Newberry Volcano's northwest flank. Lava Butte is just one of over 400 cinder/spatter cones on Newberry Volcano. About 7,000 years ago the lava flow extended west to the Deschutes River, temporarily blocking and permanently diverting the river. The cinder cone rises 500 feet above the surrounding area, and the crater in front of you is 150 feet deep. 4.8mi: Go left onto FR100 and climb the cone, a short but steep circular grind to the top.