Some snapshots of the fine fall 1998 field trip to Las Cruces Country (II)
Photos courtesy of Fred Gamble:
Pipes: Jack Cunningham (retired WNMU professor) playing the bagpipes.
Day1quary: Day 1, Stop 1 Foot log stop1, Quarry at Derry Hills.
Exposure of argillaceous limestone in lower part of the Pennsylvanian
Bar Be Formation.
Day1stp3: Day 1, Stop 1, Footlog stop 3, Exposure of pebble and
cobble conglomerates in the uppermost part of the Pennsylvanian
Bar B Formation.
Day3stp1: Day 3, Stop 1, Jim Witcher discussing geothermal activity
in the East Rincon Hills area at outcrop of Camp Rice Formation.
This outcrop records the shallow dynamics of a fossil geothermal
Opals: Day 3, Stop2, Distinctive opal bed in the Camp Rice Formation.
The opal bed contains silicified stems, tubers, roots and grasses.
This bed is believed to be a distal remnant of the siliceous sinter
complex fed by hot springs discharging from the East Rincon Hills
Day3stp3: Day3, Stop 3, Participants looking for barite and psilomene
crystals in a quarry most recently mined for road aggregate. This
mineralization is in the Hayner Ranch Formation.
Mack: Field trip chairman, Greg Mack, had many duties, including discouraging
participants from straying too close to an active beehive on the cliff
face near stop 1 of the third day of the field conference.