GEOLOGICAL SURVEY OF ALABAMA PLATE 12 ELEVATION RELATIVE TO MEAN SEA LEVEL (MSL) (FEET) ELEVATION RELATIVE TO MEAN SEA LEVEL (MSL) (FEET) SEA LEVEL -100 100 -200 -300 -400 -500 -600 -700 -800 -900 -1,000 -1,100 -1,200 -1,300 -1,400 -1,500 -1,600 -1,700 -1,800 -1,900 -2,000 200 300 400 500 600 700 800 900 1,000 SEA LEVEL -100 100 -200 -300 -400 -500 -600 -700 -800 -900 -1,000 -1,100 -1,200 -1,300 -1,400 -1,500 -1,600 -1,700 -1,800 -1,900 -2,000 200 300 400 500 600 700 800 900 1,000 -2,100 -2,200 -2,300 -2,400 -2,500 -2,700 -2,800 -2,900 -2,100 -2,200 -2,300 -2,400 -2,500 -2,700 -2,800 -2,900 -2,600 EAST A' WEST A -2,600 China Grove Halls Crossroads Town of Midway Macedonia R. 22 E. R. 21 E. R. 21 E. R. 20 E. R. 23 E. R. 22 E. R. 23 E. R. 24 E. R. 24 E. R. 25 E. Intermittent Stream Well AA-25 Well OGB 4903 Well Halls Cross Road Well J-26 Alabama Highway 223 U.S. Highway 231 Tributary to Mill Creek Tributary to Conecuh River Beaverdam Creek Bughall Creek (Head Waters) Conecuh River TD= 1,370 feet TD= 2,907 feet Alabama Highway 51 County Road 154 County Road 14 County Road 196 New Hope Church Road Mill Creek Tributary to Mill Creek Mill Creek County Road 13 Flat Creek Tributary to Flat Creek County Road 15 County Road 7 Olustee Creek BULLOCK CO. PIKE CO. TD= 1,843 feet TD= 1,405 feet Meriwether Trail Road Tributary to Olustee Creek Lake Tibee Lane Dickey Creek Mannings Creek Coker Formation Gordo Formation Eutaw Formation Gordo Formation Eutaw Formation Gordo Formation Lower Cretaceous Pre-Cretaceous Blufftown Formation Blufftown Formation Log Creek Tributary to Log Creek Davis Road Tributary to Panther Creek Panther Creek (head waters) Tributary to Panther Creek Tributary to Panther Creek County Road 49 China Grove Creek Grant Ranch/Salem Road Tributary to Crooked Creek Crooked Creek (head waters) Crooked Creek (head waters) PIKE CO. MONTGOMERY CO. Road Tributary to Conecuh River U.S. Highway 29 Tributary to Big Sandy Creek Big Sandy Creek Tributary to Hobbie Lee Lake Alabama Highway 239 Tributary to Indian Creek County Road 35 Johnston Robins Road Intermittent Stream Tributary to Johnsons Creek Johnsons Creek Georgia Central Rail Road Old Union Springs Road Intermittent Stream US Highway 82 Depot Street 3 Notch Road Merritt High School Caney Branch Lake Wetland Tributary to Caney Branch Intermittent Stream Spring Creek Dirt Road Tributary of Fishers Lake Dirt Road Tributary of Spring Creek Intermittent Stream Stream / Wetland Intermittent Stream County Highway 61 Little Indian Creek Intermittent Stream County Highway 31 Tributary to Conecuh River Wetland Wetland Well OGB 1401 Eutaw Formation Blufftown Formation Mooreville Chalk Blufftown Formation Demopolis Chalk Ripley Formation Ripley Formation Well OGB 35 TD= 2,034 feet Ripley Formation Blufftown Formation Mooreville Chalk Blufftown Formation Eutaw Formation Gordo Formation middle marine shale Coker Formation TD= 970 feet Crystalline Rocks middle marine shale Ripley Formation Coker Formation The contact between the Ripley and Blufftown Formations was taken from sample descriptions for OGB Well Permit No. 24., located approximately 1800 feet southwest of OGB Well 4903. (OGB 1401 is projected South approximately 1 mile) (OGB 35 is projected Southeast approximately 1.3 miles) 100 300 0 200 400 500 600 700 800 900 1,000 1,100 1,300 1,200 100 300 0 200 400 500 600 700 800 900 1,000 1,100 1,300 1,200 1,400 1,500 1,600 100 300 0 200 400 500 600 700 800 900 100 300 0 200 400 500 600 700 800 900 1,000 1,100 1,300 1,200 1,400 1,500 1,600 100 300 0 200 400 500 600 700 800 900 1,000 1,100 1,300 1,200 1,400 1,500 1,600 100 300 0 200 400 500 600 700 800 900 1,000 1,100 1,300 1,200 1,400 1,700 1,900 1,800 2,000 2,100 2,200 2,300 2,400 2,500 2,600 2,700 2,900 2,800 1,700 1,800 1,700 1,800 1,900 2,000 Clay or shale Shells Lignite Sandy chalk / chalky sand Chalk Sandy gravel / gravelly sand Gravel Limestone Thin limestone Thin sandstone Thin sand Sandy limestone Sandstone Sand EXPLANATION NOTE: Not all lithologies shown in Explanation are represented on this sheet. Casing Screen Well No samples Marl Clayey sand / sandy clay Vuggy limestone Crystalline rocks by: K. Michael Smith and Marlon R. Cook 2013 Berry H. (Nick) Tew, Jr. State Geologist HYDROGEOLOGIC CROSS SECTION A - A', BULLOCK COUNTY, ALABAMA INDEX MAP Alabama Line of cross section shown in blue. See Plate 1 for well locations. Note: Geographical features on cross sections were taken from U.S. Geological Survey 1:24,000- scale topographic maps. £ ¤ 29 £ ¤ 231 £ ¤ 82 £ ¤ 82 U V 239 U V 223 U V 110 U V 51 U V 94 U V 30 U V 26 U V 197 U V 6 U V 51 U V 51 U V 51 231 82 29 ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( ! ( Midway Perote Shopton Linwood Clayton Aberfoil Hurtsboro Peachburg Inverness Fort Davis Pine Level Mount Andrew Union Springs BULLOCK PIKE BARBOUR MONTGOMERY MACON RUSSELL A’ A HORIZONTAL SCALE 0 1 MILE .5 0