Arbuckle Mountains Geologic Structure

CROSS SECTION THROUGH THE ARBUCKLE MOUNTAINS ALONG HIGHWAY NUMBER 77 SHOWING THEIR GEOLOGIC STRUCTURE SOUTH WOODFORD CHERT SYCAMORE LIMESTONE (MISSISSIPPI LIME ΕΙΙ ΝΟΙΝΟΗΣ SYLVAN SHALE VIOLA LIME SIMPSON FORMATION -WILCOX SAND ARBUCKLE LIMESTONE REAGAN SANDSTONE (CAMBRIAN) X. .X COLBERT PORPHYRY X- RED BEDS ARBUCKLE TELI LIMESTONE FAULT NORTH VIOLA LIME RED, BEDS FORMATION SIMPSON SIMPSON FORMATION FAULT) ARBUCKLE LIMESTONE THESE BEDDED ROCKS, ORIGINALLY LAID DOWN AS NEARLY HORIZONTAL LAYERS OF MUD AND SAND UNDER THE SEA, FOLDED INTO A HIGH MOUNTAIN RANGE, ABOUT THE TIME THE APPALACHIAN MOUNTAINS WERE FORMED. THIS WAS WORN DOWN BY STREAMS AND BURIED BENEATH LATER SEDIMENTS, WHICH HAVE BEEN STRIPPED AWAY BY EROSION. EXPOSING THE ROOTS OF THE OLD MOUNTAINS, THESE GEOLOGIC SIGNS WERE ERECTED BY THE LIONS CLUB OF ARDMORE AT THE SUGGESTION OF DR. CHAS.N.GOULD, DIRECTOR OF THE OKLAHOMA GEOLOGICAL SURVEY, WITH THE APPROVAL OF THE STATE HIGHWAY COMMISSION AND ARDMORE GEOLOGICAL SOCIETY