- Sort:
- Most Popular | Most Recent
-
Some nice sets of crossbeds (angled sedimentary bedding) in sandstone (Wahweap formation, according to my field notes). The angled beds formed in a sand dune, most likely, that is preserved now in the rocks. The compass is for scale...
-
-
Stats
- Favorites
- 0
- Comments
- 3
- Snapshots
- 1
- Total Views
- 648
- Explore Score
- 42
-
- Folded contact between New Market Formation (lower) and Lincolnshire Formation (upper), Staunton, Virginia by Callan Bentley
-
A lovely exposure (though rather harshly lit) of the contact between two Cambro-Ordovician limestones in the Shenandoah Valley. Geologic map of the site is here: ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=14868
The same contact can be seen in the vicinity of Strasburg, Virginia, here:
www.gigapan.com/gi...-
Stats
- Favorites
- 0
- Comments
- Snapshots
- Total Views
- 171
- Explore Score
- 42
-
Coarse conglomerate flood deposit that marks the mode and timing of the first arrival of Colorado River water into Mohave Valley, NV-CA-AZ. Approximately 5.59 million years ago, a freshwater lake in Cottonwood Valley overflowed and breached the bedrock divide separating it from Mohave Valley. This flood deposit is the ...
-
-
Stats
- Favorites
- 2
- Comments
- 1
- Snapshots
- 12
- Total Views
- 3546
- Explore Score
- 30
-
-
-
-
Stats
- Favorites
- 0
- Comments
- 1
- Snapshots
- 3
- Total Views
- 2271
- Explore Score
- 27
-
-
-
-
Stats
- Favorites
- 1
- Comments
- 1
- Snapshots
- 4
- Total Views
- 2584
- Explore Score
- 1
-
-
Key stratigraphic section that documents the abrupt arrival of the Colorado River in the Laughlin-Bullhead City area approximately 5.59 million years ago. Five strata exposed here document the transition of this basin from a hydrologically closed basin to one containing a very large, sediment laden throughgoing river. ...
-
-
Stats
- Favorites
- 0
- Comments
- 1
- Snapshots
- 11
- Total Views
- 4868
- Explore Score
- 1
-
- Contact between Tensleep Formation & Goose Egg Formation, east of Shell, Wyoming by Callan Bentley
-
West of Shell, Wyoming, on route 14, there is a lovely exposure showing the tilted stratigraphic contact between the lower Tensleep Formation (purple; Pennsylvanian period) underneath Goose Egg Formation (orange/tan; Permian to Triassic in age). The contact dips to the west because it has been deformed during Laramide ...
-
-
Stats
- Favorites
- 0
- Comments
- 0
- Snapshots
- 2
- Total Views
- 2880
- Explore Score
- 1
-
-
Pan of cutbank exposure of alluvial stratigraphy along the Truckee River
-
-
Stats
- Favorites
- 1
- Comments
- 0
- Snapshots
- 4
- Total Views
- 2809
- Explore Score
- 1
-
-
-
-
Stats
- Favorites
- 0
- Comments
- 0
- Snapshots
- 9
- Total Views
- 2643
- Explore Score
- 1
-
-
From the Devil Canyon overlook, looking north along the main channel of Bighorn Canyon. If I remember the stratigraphy correctly, the top layer of the canyon is formed from the Madison Limestone, which is over 350 million years ago - same age and similar in appearance to the Redwall Limestone that makes up part of t...
-
-
Stats
- Favorites
- 2
- Comments
- 1
- Snapshots
- 1
- Total Views
- 2126
- Explore Score
- 1
-