Order number 940330-160606-96 -001-001 page 37 set 11 with 111 of 111 items deposition of carbonate from 40 Ma to 20 Ma Depositional environments show a gradual babinward progradation of facies with slope carbonates passing upward into fore-reef, reef, back-reef, and lagoonal carbonates. Slope strata contain wackestones and packstones with submarine-cemented lithoclasts, coral, coralline algae fragments, benthic rotaline forams, planktonic forams, and echinoderm fragments. Fore-reef strata are dominantly packstones and boundstones containing large pieces of coral, abundant benthic forams, coralline algae fragments, stromatoporoids(?), and minor planktonic forams. Reef and near-reef sediments include coralgal boundstones and grainstones with abundant benthic forams. Halimeda and miliolid forams are common in lagoonward parts of the back reef. Sponge borings, geopetal structures, and fractures are common in reef and fore-reef strata. Lagoonal strata are wackestones and packstones with common mollusks, coral, coralline algae, and benthic forams (rotaline and miliolid). Diagenesis has extensively altered strata near the atoll margin. Aragonite dissolution and calcite cements (radiaxial and cloudy prismatic) are abundant in fore-reef, KEYWORDS EDB Item reef, and some back~-reef strata. Petrographic and geochemical data indicate aragonite dissolution and calcite cementation in seawater at burial depths of 100 to 300 m. Dolomite occurs in slope and deeply buried reefal carbonates. Most dolomitization occurred at burial depths of more than 1000 m in cool marine waters circulating through the atoll. lagoonal strata are not Significantly altered by marine diagenesis and still contain abundant primary aragonite and magnesium calcite. MARSHALL ISLANDS/reefs ;REEFS/deposition ;ALGAE; CALCITE; CARBONATE ROCKS; CORALS; DISSOLUTION; FOSSILS; GEOCHEMISTRY; REEFS;MIOCENE EPOCH; DEPOSITION; STRATIGRAPHY 51 PRIMARY REPORT NUMBER UCRL--50007-87 ANALYTIC TITLE ENGLISH Summary of the Bikini Atoll ionizing-radiation survey TITLE ENGLISH AUTHOR ANALYTIC PERSONAL AUTHOR CORPORATE TEXT PAGE RANGE PUB. DATE (YYMMDD) ABSTRACT Hazards Control Department annual technology review, 1987 Shingleton, K.L.;Cate, J.L.;Trent, M.G.;Robison, Griffith, R.V.;Anderson, K.J. (eds.) ~ Lawrence Livermore National Lab., 1-13 CA W.L. (USA) 880700 This survey was designed to measure the beta dose rate from {sup 137}Cs and {sup 90}Sr/{sup 90}Y¥ relative to previously measured gamma dose rates on Bikini and Eneu 20034871