ON THE ROCKS PRESENTS

CAverns, hot springs, evaporite collapse, & karst

Field Trip to the Glenwood Springs Area

 SATURDAY & Sunday May 10-11

Trip Leaders: Harvey DuChene, Mark Maslyn, and Richard Rhinehart

Trip Coordinators: Laura Wray and David Schoderbek

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Trip Description

The RMAG On The Rocks Field Trip Committee is sponsoring a one and a half day trip on May 10 and 11 to the Glenwood Springs area with speleological experts Mark Maslyn, Harvey DuChene, and Richard Rhinehart. Field trip stops will include:

A private tour of both caves at Glenwood Caverns with Mark, Harvey, and Rick who are renowned experts on the abundant and diverse cave formations (see Figures 1 and 2) that will include: 

• Hydrothermal dolomite replacement of Mississippian Leadville Limestone.
• “Zebra” rock fabrics.
• Role of sulfuric acid in speleological dissolution.
• Time, temperature, and fluid effects on cavern formation.
• Evidence of abundant fracturing, carbonate precipitation, and brecciation (see Figure 3).
• Structural control in cave passages (see Figure 4).

Additional stops include:

• Paleokarst examples in Leadville Limestone quarries with associated mineral deposits.
• Structural effects of the Eagle and Carbondale Collapse Centers, White River Uplift, Glenwood Springs Syncline, and the breached core of the Cattle Creek Anticline on cavern development.
• Classic diapir in the Roaring Fork Valley near Carbondale and the role of salt flowage and evaporate dissolution.

Important Details

Participants will carpool to and from Glenwood Springs.  A block of rooms has been reserved in Glenwood Springs and participants must make their own reservations. A group dinner is planned for Saturday night.  The trip will end at noon on Sunday.

RMAG will handle entrance fees, tips, and the Saturday night dinner. 

Hotel Block

RMAG has arranged a Room Block with the La Quinta Inn Suites by Wyndham Glenwood Springs for May 10, 2025. There are 22 rooms with various sleeping occupancy that are being held until May 3, 2025.

Attendees are responsible for paying for their room directly to the hotel. 

Make your reservation 

Cost

• $ 80 Members
• $ 100 Non-Members (not a member? Join Today!)

Cost for field trip include - field trip materials, entrance fees to the caverns, tips, Saturday night dinner and operational costs. 

Refunds

Refunds for the Caverns, Hot Springs, Evaporite Collapse, & Karst Field Trip to Glenwood Springs Area are available until April 28, 2025. After April 28, 2025, if you can no longer attend you can transfer your registration to another attendee or forfeit the trip costs.

Waivers

All registrants must fill out the Medical Emergency, Waiver and Release of Liability form. Those who fail to complete the form will not be permitted to attend the field trip.