David Hawkins and ten students from his "Volcanoes" and Petrology courses capped off the spring 2001
semester with a field trip to volcanic fields in New Mexico. The group flew from Columbus to
Albuquerque, traveled in a rental van and camped in National Park and Bureau of Land Management
campsites. The first portion of the trip focussed on felsic volcanic rocks and related features of
the Valles and Toledo calderas in the Jemez Mountains west of Sante Fe. The second portion of the
trip focussed on mafic lava flows, vents and related features in the Zuni-Bandera and Mt Taylor
volcanic fields, west of Albuquerque. This trip was supported by funds from an endowed gift to
the Department by Frederick T. Holden.
The student participants. Clockwise from the far left: Christine Dektor '03, Christa Lackmeyer '02, Rebecca Glick '03, Ben Webb '03, Ermine Algaier '03, Jeff Nibert '04, Ross Studlar '04, Chris Russell '04, Katie Brumbaugh '03, Stephanie Konfal '03.
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View to the east north east of the Valles caldera from Valle Grande. The black arrow shows the present day margin of the caldera near Parajito Mountain and the red arrow shows Cerro del Medio, a rhyolite dome that extruded along the caldera's ring fracture.
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Pueblo ruins in Frijoles Canyon, Bandelier National Monument.
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Christa Lackmeyer '02 and Christine Dektor '03 investigate a Pueblo dwelling carved into unwelded tuff in the lower unit of the Bandelier tuff.
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Jeff Nibert '04, Katie Brumbaugh '03, and Chris Russell '04 explore a cavity along a brittle fault in the Bandelier Tuff, Frijoles Canyon.
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Looking east to the mouth of Frijoles Canyon from the Upper Falls along the Falls Trail. The reddish layers in the foreground are tephra deposits from a maar volcano exposed in cross-section on the Canyon walls.
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A paleocanyon buried by the lower unit of the Bandelier tuff, exposed in the walls of Frijoles Canyon along the Falls Trail.
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Students studying plinian airfall tuff deposits of the Guaje pumice layer at the base of the Bandelier section along NM 502.
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Tephra deposits beneath the Bandelier tuff exposed along NM 502, with the Sangre de Cristo Mountains in the background.
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The Bandelier tuff section in Pueblo Canyon, east of Los Alamos.
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Tephra layers associated with emplacement of the overlying Banco Bonito obsidian flow.
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Chris Russell '04 taking a close look at the tephra layers beneath the Banco Bonito lava flow.
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Students returning from a refreshing dip in the Spence hot spring.
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Battleship Rock. An excellent example of both a very densely welded tuff and inverted topography in volcanic terrains.
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Soda Dam. A large mass of travertine deposited from hydrothermal springs that dammed the Jemez River.
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A small vent on the west side of the Jemez River near Soda Dam where CO2-rich hydrothermal waters emerge and instantly degas. The water from this vent was almost too hot to touch
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The group on the Sandstone Bluffs. Composed of Upper Jurassic Zuni Sandstone, on the east side of El Malpais National Monument. The McCartys basalt flowed up against these bluffs about 3000 years ago.
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Ermine Algaier '03 on the Sandstone Bluffs. The mountain in the background is Mt. Taylor, a stratovlocano that destroyed its summit in a major eruption about 2 million years ago.
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Weathering/erosional pit on the bedding surface of the Zuni Sandstone, Sandstone Bluffs.
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Students (left to right) Christa Lackmeyer '02, Rebecca Glick '03, Stephanie Konfal '03 and Christine Dektor '03 exploring the Dakota Sandstone at the South Narrows campsite while?
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...Ermine Algaier '03 and Chris Russell '04 prepare dinner.
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Studying pahoehoe tongues preserved on the glassy surface of the McCartys flow.
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Highly ropy pahoehoe on the McCartys flow.
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Levels of lava flows preserved as shelves on the wall of the Four Windows Cave, a partially collapsed lava tube in the Big Tubes Area on the west side of El Malpais National Monument.
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Lava drip marks on a roof block on the floor of the Four Windows Cave.
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Rebecca Glick '03, Jeff Nibert '04, Ross Studlar '04, Chris Russell '04, and Christa Lackmeyer '02 exiting the Four Windows Cave.
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Christine Dektor '03 and Stephanie Konfal '03 unraveling the geologic puzzle exposed on Grants Ridge in the Mt Taylor volcanic field.
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The group in front of Grants Ridge after solving its geologic puzzle.
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