GEOLOGICAL SURVEY OF ALABAMA QUADRANGLE SERIES MAP 53 PLATE (FARLEY) CORRELATION OF GEOLOGIC MAP UNITS 5 000m o 46 E 5 27'30" 5 5 5 o 5 D 5 5 5 5 86 30' 5 R 1 E R 2 E 49 50 51D (NEW HOPE) 52 25' 54 330,000 FEET 5 86 22'30" (GRANT) 47 48 53 D 55 56 57 o o 34 30' D Mp Mp 34 30' !pv A Mp Mb Mm Mp Qal Qal Quaternary D D Mp CENOZOIC D D Mb !pv unconformity Qal 38 000m !pv 17 N D Qal Pennsylvanian Mp !pv D 38 D 17 Mm Mb Qal unconformity D Mh Mp Qal D Mb D Mh PALEOZOIC Qal Mb Mm D Qal !pv D Mississippian Mp Mh D Mb D D D 38 D Mm 16 Mb D Qal Qal 3816 Mb 1,450,000 Qal FEET D D D Qal D D Mh Mh D Mh DESCRIPTION OF MAP UNITS Mb D af Artificial fill—Construction materials, primarily limestone riprap. Qal Qal Alluvium (Quaternary)—Unconsolidated sand, silt, clay, and angular to rounded gravel. D D D 3815 !pv Pottsville Formation (Lower Pennsylvanian)—Light-gray, medium- to coarse-grained, quartzose D Qal Mp D 3815 D sandstone locally containing scattered to abundant well-rounded quartz pebbles; quartz pebbles and/or claystone conglomerate are common. Interbeds and intervals of dark-gray shale and D D Mh D Mh mudstone and wavy- to lenticular-bedded sandstone and shale locally present. Mb Qal Mp Pennington Formation (Upper Mississippian)—Lower part dominated by medium- to dark-gray, D !pv Mm !pv conchoidally fractured dolomicrite containing nodules and stringers of dark-gray chert and thin D D D interbeds of dark-gray, olive-green, and maroon shale and mudstone. Upper part includes variably D D !pv D gray, bioclastic limestone; cherty argillaceous and bioclastic limestone; oolitic limestone; limey 38 D 14 D Mb 3814 dolomite; and dolomite containing intervals of maroon and olive-green mudstone. The stratigraphy Mp T 6 S D D of the uppermost part is variable depending on the level of the pre-Pottsville truncation. T 7 S D D Mp Mb Bangor Limestone (Upper Mississippian)—Predominantly light- to locally dark-gray, bioclastic and Mp D Mp !pv oolitic limestone. Medium- to dark-gray shale containing thin to discontinuous interbeds of T 6 S D D D T 7 S D medium-dark-gray, fossiliferous limestone common at base. Lower part includes medium-gray D peloidal and fenestral limestone, light-gray dolomicrite, and thin interbeds of light-olive-green shale. Uppermost part includes interbeds of cherty limestone, olive-green and maroon mudstone, and 3813 D 3813 grayish-yellow dolomicrite. 27'30" Mp 27'30" Mh D Hartselle Sandstone (Upper Mississippian)—Light-brownish-gray, very fine to fine-grained, thin- to D D Mp D medium-bedded, quartzose sandstone containing brachiopod molds and burrows. Sedimentary D Qal D structures include ripple laminations, small crossbeds, horizontal laminations, and hummocky beds. D The Hartselle outcrop is too thin to display and exposures are shown as control points. D Mb D !pv Mb Mm Monteagle Limestone (Upper Mississippian)—Light- to locally medium-gray, oolitic and bioclastic D limestone; nodules and stringers of dark-gray, fossiliferous chert rarely present in upper part. D D 38 12 Mp Mb 3812 SYMBOLS FOR GEOLOGIC MAP D D D Contact, long dash where located approximately, showing location of control point (contact exposed or closely located) D !pv D Contact, dashed where located very approximately D D Contact, concealed beneath mapped units D 3811 !pv Mb D Qal Mb Water boundary 3811 D D D D SYMBOLS FOR CROSS SECTION A-A' (NEWSOME SINKS) Mp CARMEL) (MT. Stratigraphic contact D D D D D D Mp 3810 D 38 D 10 D Mp D D D Mb af D D D D D D D D D !pv 3809 D 3809 D Qal af D Qal Mp D 25' D 25' D Mp Mb D D 38 D 08 D 3808 D Mb D D Mp !pv D D D D !pv D Mp Mb D D D 38 07 D D 3807 D D 1,420,000 FEET D D D !pv D D 3806 38 Mp D 06 D !pv D !pv 3805 3805 D D 3804 3804000m N T 7 S T 8 S o 34o22'30 A' 34 22'30" " o 86o30' 546 300,000 FEET 547 548 549 27'30" 550 551 (ARAB) 552 553 25' 554 555 556 557000m E 86 22'30"(GUNTERSVILLE) R 1 E R 2 E (HULACO) Base topographic map U.S. Geological Survey 1948 (Photorevised 1970) MN ILL. Digital database by Philip Dinterman GN KENTUCKY SCALE 1:24,000 MO VA Produced in cooperation with the U.S. Geological o 0 23’ 1 1/ 2 0 1 MILE o TENNESSEE Survey, National Cooperative Geologic Mapping Program, 3 15’ 7 MILS N.C. 57 MILS Cooperative Agreement 08HQAG0109 1 1/ 2 0 1 KILOMETER MISS S.C. ALA GA Polyconic projection. 1927 North American datum CONTOUR INTERVAL 20 FEET QUADRANGLE LOCATION UTM Grid and 2009 Magnetic North NATIONAL GEODETIC VERTICAL DATUM OF 1929 10,000-foot grid based on Alabama (East) Declination at Center of Sheet rectangular coordinate system Map rotated 0.3 degrees clockwise for display A A' Clark Hollow Cloud Mountain Paint Rock Creek Wheeler Lake Parches Cove Brindley Mountain Shoal Creek Snow Point Long Hollow Georgia Mountain !pv !pv !pv !pv Mp Mp Mp 1,000 1,000 Mb Mh Mb Mb Mm Mb Mm Mb Mp Mm 500 500 Mm Mississippian undifferentiated Mississippian undifferentiated Mississippian undifferentiated 0 (Sea level) (Sea level) 0 -500 -500 Upper and Middle Ordovician Upper and Middle Ordovician Upper and Middle Ordovician -1,000 -1,000 Lower Ordovician and Cambrian Lower Ordovician and Cambrian Elevation relative to Lower Ordovician and Cambrian -1,500 Elevation relative to mean sea level in feet mean sea level in feet -1,500 GEOLOGIC MAP OF THE GUNTERSVILLE DAM 7.5-MINUTE QUADRANGLE, MADISON AND MARSHALL COUNTIES, ALABAMA by Berry H. (Nick) Tew, Jr. W. Edward Osborne and Willard E. Ward, II State Geologist 2010.