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Most interesting rock formations are either a result of two geologic processes, erosion or volcanism but there are others such as meteorite craters, and earthquake related deformation to name just a few.
The waymarks in this category should be examples of interesting rock, sand, or soil formations. An explanation of the geologic significance of the location must be included in the description. Including information on the geological dating and/or minerology of associated rocks will help greatly to insure that your waymark gets approved.
Geologically interesting features which are already covered under another category will be denied. These include Caves, Glaciers, Mountain Summits, Natural Arches, active volcanoes, Rock and Mineral Displays and Paleontology and Fossils. As other more specific geologic categories are created they will become off-limits for this category, existing waymarks notwithstanding.
In the interest of environmental and civic responsibility, the following is a guideline.
Waymarks on public land which is already opened to the public and managed for visits to the location of waymark do not need approval from the land's management. Waymarks on public land which is unimproved for visitors, but otherwise open to unrestricted access by the public are also accepted. Waymarks on private land will be accepted if access is open to the public and this access is documented via a web site. Waymarks on private or otherwise restricted land will be accepted as long as the place of interest can be viewed from unrestricted public land (for example, road right of way).
If the category managers have any doubt as to the right of public access to the waymark, it will be deleted. Using web site references to build your case is encouraged.
Also, collecting and removal of any kind of sample from the site is strenuously discouraged.
A photo of the formation taken by the waymarker must be uploaded and used as the waymark page photo.
sorted by: Alphabetical: A-Z Alphabetical: Z-A Newest (by date approved) Newest (by date created) Closest
0 km
Lava Dome -- Grapevine Hills Trail, Big Bend NP TX
in Places of Geologic Significance
The amazing scenery along the Grapevine Hills trail is a volcanic lava dome that turned into a laccolith and shattered into boulders
posted by: Benchmark Blasterz
location: Texas
date approved: 1/30/2017
last visited: 12/25/2016
E6.9 km
Landscapes in Stone -- Tornillo Flat, Big Bend NP TX
The amazing desert scenery along the main park road through Tornillo Flat holds a surprising secret: This area was once a swamp!
date approved: 1/31/2017
last visited: 12/26/2016
SW18 km
Volcanic Origins -- Window Trail, Big Bend NP TX
The Chisos Mountains were formed by volcanic activity from 17-38 million years ago
SW20.6 km
Chisos Mountains -- Big Bend National Park TX
A sign along the Ross Maxwell Scenic Drive explains the volcanic origins of the Chisos Mountains
date approved: 1/28/2017
last visited: 12/24/2016
SW22.2 km
Volcanic Dikes - Big Bend NP, TX, US
Located in Big Bend National park along Ross Maxwell Scenic Drive.
posted by: Crazy4horses
date approved: 1/9/2017
last visited: 3/15/2017
SW26.7 km
Goat Mountain -- Big Bend NP TX
Much of Big Bend National Park was formed by the action of volcanoes, long since dormant. One of those old volcanoes created Goat Mountain
SW27 km
Burro Mesa Pouroff -- Big Bend National Park, Brewster County TX
The pouroff (dry waterfall) at Lower Burro Mesa is in a dry wash that fills with flash floods, resulting in a dramatic waterfall that has carved unusual features this box canyon
date approved: 1/27/2017
SE32.8 km
Boquillas Formation -- Big Bend NP TX
The waymark coordinates are for the pictographs on the sedimentary cliff walls of the Boquillas Formation at Boquillas Hot Springs
last visited: 3/16/2017
SW34.9 km
Mule Ears Peaks - Big Bend NP TX
The famous Mule Ears Peaks at Big Bend, so named because . . . well, duh
SE36.5 km
Boquillas Canyon -- Big Bend NP TX
Boquillas Canyon is an amazing show of what a little water and a little grit, and a little pressure can do to solid rock
SW39.8 km
Tuff Canyon -- Big Bend NP TX
An interpretive sign at a trailhead explains this unusual canyon at Big Bend National park
last visited: 3/27/2018
SW40.9 km
Cerro Castellan - Big Bend NP TX
An interpretive sign explains the beauty and mystery of the formation of Castolon Peak
SW47 km
Santa Elena Canyon - Big Bend National Park, TX, US
Santa Elena Canyon is one of the most famous landmarks of the Big Bend National Park. It is visible from over 10 miles away, and can be seen, if unobstructed, from almost any location in the park.
date approved: 12/30/2016
last visited: 2/22/2021
N73.2 km
Los Caballos -- Ouachita Fold Belt, US 385 S of Marathon TX
A highway rest area and historic marker at a fascinating rock formation south of Marathon
date approved: 2/1/2017
N83 km
Marathon Basin -- Fort Peña Park, Marathon TX
Important features of Marathon Basin are explianed at Fort Peña Park, south of Marathon TX
date approved: 2/4/2017
last visited: 9/20/2016
N128.6 km
Sierra Madera Astrobleme -- US 385 S of Fort Stockton, Pecos County TX
The Sierra Madera Astrobleme is a giant meteor crater in Pecos County Texas south of Fort Stockton TX
date approved: 2/6/2017