South Georgia rift
| South Georgia Rift | |
|---|---|
| Stratigraphic range: 215-175 Ma | |
Map of the South Georgia Rift | |
| Type | Rift Valley |
| Unit of | Rift Valley associated with the break up of Pangea |
| Sub-units | Hawthorn Formation, Citronelle Formation, Ocala Limestone, Marks Head Formation, Alum Bluff Formation, Flint River Formation, Tivola Limestone, Claiborne/Jackson Group, Oak Grove Sand, Jackson Bluff, Chipola Formation, Shoal River, Choctawhatchee Formation, Coharie Formation, Brandywine Formation, Duplin Formation, Bear Bluff Formation, Conway Formation, Waccamaw Formation, Canepatch Formation, Peedee Formation, Penholoway Formation, Socastee Formation, Waiter Island Formation, Midway Group, Clayton Formation, Pine Barren Member, Lisbon Formation, Wilcox Group, Tuscahoma Sand,Nanafalia Formation, Gravel Creek Sand Member, Grampian Hills Member, Altamaha Grit, Wilcomico Shoreline Complex, Socastee Formation, Talbot shoreline complex |
| Area | ~100,000 km2 |
| Thickness | up to 3,500 metres (11,480 ft) |
| Lithology | |
| Primary | (Surface) Limestone, Sand, clay, sandstone |
| Other | (subsurface) basalt, diabase |
| Location | |
| Location | South Georgia, Southeast Alabama, western Florida Panhandle, South Carolina Lowcountry |
| Region | Southeastern United States |
| Country | United States |
| Extent | 100,000 square miles, 160,000 square kilometers |
| Type section | |
| Named for | Southern Georgia |
Map of the southeastern US. The south georgia rift runs from southeastern Alabama to near Charleston, South Carolina | |
The South Georgia Rift (SGR) or the South Georgia Rift Basin is a large rift valley in the southeastern United States. It is the largest on all rift valleys in the Eastern North American Margin (ENAM). The rift runs from the extreme western Florida panhandle and southeastern Alabama, through south and southeastern Georgia, into southeastern South Carolina (up to near the Charleston, South Carolina area), and then offshore into the Atlantic Ocean .