Glauconite in Early Tertiary Sediments of Gulf Coastal Province

Abstract

PLATES 1 V ariation s in G lauconite Grains it0 2A G lau con itic q u a r tz ite hh 23 G lau con itic sandstone 3A Fos s i l i f e ro u s lim e sto n e it6 3B Marlstone 1*6 UA Limestone U6 iiB Sandy coquinoid lim estone L8 5A Sandy lim estone 50 SB S i l t y lim estone 50 6A G lau con itic marl $2 6B G lau con itic lim estone 52 7A G lau con itic quartzose sandstone 5U 7B Sandy c la y sto n e 5U 8A G lau con itic q u a rta ite 56 8B G lau con itic lim eston e 56TABLE I SAMPLE 1 2 5 DESCRIPTION OF SAMPLES LOCATION STRATIGRAPHIC POSITION LITHOLOGY 2' above road l e v e l, 0 .5 m iles south of Turkey Creek on S ila s -Bladon Sjprings Hoad, Choctaw Co., Ala. Vfest sid e U.S. Hwy. 11 cu t, 9.9 road m iles south of junction of U.S. Hwys. 11 and 60, Lauderdale Co., Miss. North side of Mt. Barton or Seymour's H ill, ju st south of Meridian, Miss., and 0.9 road m iles e a st of U.S. Hwys. 11 and 80 in te r s e c tio n , Lauderdale Co., Miss.7' above U.S. Hwy. 80 le v e l at the fo o t of Mount Barton, south of Meridian, M iss., Lauderdale Co. Hatchetigbee formation Zones of borings at M eridian-Tallahatta contact Upper and lower zones of borings at M eridian-Tallahatta contact Bashi marl at the base of the Hatcnetigbee fo r mation SAND: greenish-black, poorly bedded, mediumgrained, g la u c o n itic . SAND: greenish-w hite, bored, coarse-grained, g la u c o n itic , quartzose, cemented by s i l i c a . * SAND: greenish-w hite, bored, coarse-grained, g la u c o n itic , quartzose, cemented by c a lc it e . SANDSTONE or MARLSTONE: dark green, concretionary, f o s s ilif e r o u s , mediumgrained, quartzose, g la u c o n itic , cemented by c a lc it e . # * Minerals l i s t e d in order of increasing abundance# Stone in d ica tes indurated sediments SAMPI£ LOCATION 9 East sid e , U.S. Hwy. US road cu t, 11.9 road m iles north of Meridian, Lauderdale Co., Miss. 12 West sid e , U.S. Hwy. ii5 roadcut, 23.6 road m iles north of Meridian in Kemper Co., Miss. lii North sid e, U.S. Hwy. 30 road c u t, 6.5 road m iles e a st of junction of old U.S. Hwy. 60 and new U.S. Hwy. 80, Lauderdale Co., K iss. 15 3 1 above north sid e of U.S. Hwy. 80, 0 .3 road m iles west o f Southern Railroad underpass, and 8.9 road m iles e a st of Meridian, Lauderdale Co., M iss. 18 Drainage ditch on south sid e of U.S. Hwy. 80, at M iss.-A la. sta te lin e , Sumpter Co., Ala.TABLE IContinued) STRATIIRaPHIC POSITION Near tne base of the Tuscahoma formation Matthews Landing marl UTHOLoOY SAND* orange, fr ia b le , s lig h t ly cross-bedded, s lig h t ly f o s s ilif e r o u s , fin e-g ra in ed , quartzose, containing a thin glau c o n itic concentrate in a zone of reworking. LDQSTONS* lig h t gray, f o s s ilif e r o u s , g la u c o n itic . Base of Bashi marl overlying Tuscahoma clays Tuscahoma formation SAND or SILT* greenish , laminated, s l ig h t ly f o s s i l ife r o u s , very fin e-g ra in ed , s lig h t ly g la u c o n itic , quartzose. SAND* tan, bored and re worked, very fin e-g ra in ed , calcareous, g la u c o n itic , quartzose, clayey. Na...