Geologic Map of the Round Spring Quadrangle, Shannon County, Missouri
Scientific Investigations Map
3073
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Abstract
The Round Spring 7.5-minute quadrangle is located in Shannon County, south-central Missouri on the Salem Plateau of the Ozark Plateaus physiographic province. As much as 1,350 feet (ft) of flat-lying to gently dipping Upper Cambrian and Lower Ordovician rocks, mostly dolomite, overlie Mesoproterozoic volcanic rocks. The bedrock is overlain by unconsolidated residuum, colluvium, terrace deposits, and alluvium. Karst features, such as small sinkholes and caves, have formed in the carbonate rocks, and many streams are spring fed. The topography is a dissected karst plain with elevation ranging from 650 ft along the Current River on the eastern edge of the quadrangle to almost 1,200 ft at various places on the ridge tops. The area is mostly forested but contains some farmlands and includes sections of the Ozark National Scenic Riverways of the National Park Service along the Current River. Geologic mapping for this investigation began in the spring of 2001 and was completed in the spring of 2002.
Suggested Citation
Orndorff, R.C., Weary, D.J., 2009, Geologic Map of the Round Spring Quadrangle, Shannon County, Missouri: U.S. Geological Survey Scientific Investigations Map 3073, Sheet: 44 x 32 inches, https://doi.org/10.3133/sim3073.
ISSN: 2329-132X (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic Map of the Round Spring Quadrangle, Shannon County, Missouri |
| Series title | Scientific Investigations Map |
| Series number | 3073 |
| ISBN | 9781411324374 |
| DOI | 10.3133/sim3073 |
| Year Published | 2009 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | U.S. Geological Survey |
| Description | Sheet: 44 x 32 inches |
| Projection | Polyconic |
| Scale | 24000 |