Serpent Mound crater

Serpent Mound crater, also known as the Serpent Mound Disturbance,^[1] is an eroded meteorite impact crater in Ohio, United States. It lies largely in Adams County, with the northern part mostly in Highland County, except for a small northeast part in Pike County.^[2][3]

It is classified as a complex crater because it features a central uplift, a transition zone, and a ring graben (a ring-shaped trough in the outer part of the crater). Although eroded, the original rim diameter is estimated at 8 km (5.0 mi) and the age is estimated to be less than 320 million years (Mississippian or younger).^[2]

The crater is named after the Serpent Mound, an effigy mound, located on a plateau in Brush Creek Valley within the crater.

References

1. ^ Reidel, S.P.; Koucky, F.L., and Stryker, R.J (1982). "The Serpent Mound disturbance, south central Ohio". Am. Jour. Of Sci 282 (9): 1343–1375. doi:10.2475/ajs.282.9.1343. 
2. ^ ^{a b} "Serpent Mound". Earth Impact Database. University of New Brunswick. http://www.passc.net/EarthImpactDatabase/serpent-mound.html. Retrieved 2009-08-17. 
3. ^ "Subsurface Geology of the Serpent Mound Disturbance of Adams, Highland, and Pike Counties, Ohio." Ohio Department of Natural Resources, Division of Geological Survey. PDF (accessed 10 April 2007)

2 should direct here: http://www.passc.net/EarthImpactDatabase/serpentmound.html ... please fix