Johnsonville crater

Johnsonville crater
Location of the crater in South Carolina Show map of the United States Johnsonville crater (South Carolina) Show map of South Carolina
Impact crater/structure
Confidence	Proven[1] Not confirmed[2]
Diameter	~11 km (6.8 mi)
Age	35 ± 0.3 Ma Late Eocene
Exposed	Yes
Drilled	No
Location
Coordinates	33°49′N 79°22′W / 33.817°N 79.367°W / 33.817; -79.367[1]
Country	United States
State	South Carolina
District	Florence County
Municipality	Johnsonville

The Johnsonville crater or the Snow's Island crater is a circular geophysical feature situated at the junction of the Lynches River and the Pee Dee River in South Carolina, United States, which has been interpreted by some scientists as an impact crater. Snow's Island, at that point, is believed to be the upthrust formed at the center of the crater after the impact. The structure is approximately 8 miles (13 km) in diameter, but is not well defined at the surface. It was discovered by magnetic anomalies, supported by the study of well drilling cores. Supposed impact breccia was found in these cores. The Russian Academy of Sciences lists the structure as a proven impact crater,^[1] though the Earth Impact Database (EID) does not list it as confirmed.^[2]

References

Citations

General bibliography

• Mikheeva, Anna (2017). "The Complete Catalog of the Earth's Impact structures". Russian Academy of Sciences. p. 1. Retrieved 2019-04-02.

External links

• An Impact Crater in Northeast South Carolina
• The Johnsonville Impact Crater, South Carolina: Petrologic Evidence of Shock Metamorphism from Core Samples, The Smithsonian/NASA Astrophysics Data System

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This page was last edited on 27 July 2023, at 00:52