Raplee Anticline, Utah
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Raplee Anticline, Utah
In structural geology, an anticline is a fold that is convex up and has its oldest beds at its core. On a geologic map, anticlines are usually recognized by a sequence of rock layers that are progressively older toward the center of the fold because the uplifted core of the fold is preferentially eroded to a deeper stratigraphic level relative to the topographically lower flanks. The strata dip away from the center, or crest, of the fold. If an anticline plunges (i.e. is inclined to the Earths surface), the surface strata will form Vs that point in the direction of plunge. Anticlines are typically flanked by synclines although faulting can complicate and obscure the relationship between the two. Folds typically form during crustal deformation as the result of compression that accompanies orogenic mountain building. The San Juan River flows in the foreground
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Media ID 6327437
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Compression Desert Erosion Fold Mountain Rock Sand Stone Strata Stratigraphy Topographical Utah San Juan River
EDITORS COMMENTS
This print showcases the stunning Raplee Anticline in Utah, a remarkable example of structural geology. An anticline is a fold that arches upward and has its oldest rock layers at its core. The unique topography of this geological wonder can be observed through the sequence of progressively older rock layers towards the center of the fold. The strata gracefully dip away from the crest of the fold, creating a mesmerizing visual effect. In cases where an anticline plunges, or inclines to the Earth's surface, V-shaped patterns are formed by surface strata pointing in the direction of plunge. As we admire this photograph, it becomes evident how erosion has played a significant role in shaping this landscape over time. The uplifted core of the fold has been preferentially eroded to deeper stratigraphic levels compared to its flanks, resulting in an intricate display of sandstone formations. It is important to note that while anticlines are typically accompanied by synclines (downward folds), faulting can complicate and obscure their relationship. These folds form as a result of compression during crustal deformation associated with mountain building processes. Adding further charm to this scene is the presence of San Juan River flowing peacefully in the foreground. This image serves as a testament to nature's artistic prowess and reminds us once again about our planet's fascinating geological history.
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