Analyses i, 2, 5, 6,7, 9 by Charlotte M. Warshaw; analyses 3, 4, 10,11, 12,13 by A. C. Wiisidis. Final SrO determinations with flams photometer by W, W. Brannock, X-ray determinations by J. M. Axclrod) Foramiaifera BiOs..... 2-0-2222 4 3 6 7 8 9 G. 20 0.12 0.5 0.14 0.18 0. 24 0. 16 0.06 0.12 Acid insol. org._.-...-.-.----.--.- - 26 16 32 Acid insol. fnorg...-.--.2.---... Xray... 2... 2. -----e ene 0.18 . Total...............-------- 0.71 al 12.03 87.13 . 100. 00 | . 1, Picked Foraminifera (Caiearina spengieriy, at) 32 54.51 7 42 66 16 4. &. 6. T. Table 1. 2006069 0 6.01 42.20 a4 41.08 - 46 8.25 41.65 24 40. 43 15 1,27 1° 25 J..2-e-e -30 30 99. 40 .70 4 3.95 27 1. $3 1.48 99. 55 e7. 14 a7. §9 97. 92 0.09 |...-..---. Cal. Arag. 0.38 Arag. very little cal. 0.35 Cal. 038 CaL Q.12 2 12.12 $7. 30 a4 100.07 | 0. 30 0.14 30 67 97.25 L233 100.00 | t Lagoon beach. Lugvoon beach, 2. Fickect Foraminiters (Afareinepora tertetralis), Picked unweathered [falémeda segunents, Picked weathered Jiilisrueda seaments, Lithoph: luca (Poroliwthon) gerdiners, Lithaphylim craspedium, Horalzthon onkodes. a 33 53. 25 .87 41. 46 287 poe en fen eee eee . 97.17 (AL Fe)103_.. 2 .e- ee ee eee seca MeCOs.. oo. ee eee eeeee eee CeCOy._ eee BrC Oy 88 ee eee eee nee 63 6 Total..........-2.---..----- a Sediments 3 22 §.67 47.86 36 43.16 Water...... Bee aca neene ne neeencene Corals 2 -w $. 52 46.90 18 42,64 Water sol. org..._.-.-.-.-...---.. Caloreous red aleaa i {AlFe)s0u, wee een eee wee nen ennef EO na eee eee ene eee CaO_. well 6rO_. eee anew mene wenn ne C00... 8 eee en eee eee Acid sol. §O:_....222-2.22.2..2-.- Halimeda 35 . 82 97, 42 1.27 100.00; 6. 19 43 19.00 §1,02 38 | 100.00, 0. 28 53 18 54 80. 35 37 100.00 | a4 6.7 42.91 a 39. 75 220 2.01 ! 2.47 : 1. 52 | 95.75 6 24 $3.03 41. 68 (7) Bai 98. 33 | 0.36 |-.--.-.--Cal (Arag.) 0.11 0.06 at 06 15.41 .52 £3.77 0.35 JH |... 100.00 |..-.-.--. | 10 11 016 12 0.20 3 0. 30- 0.20 36 05 47.78 23 42.26 2 1.32 §2_ 28 72 41.57 .26 2.26 80.31 43 41. 65 79 32 s2. 54 - 82 41. 60 «18 JH 52. 4 «td 41.3 223 17 2k 16 a2 28 a) 97.05 . 97, 12 96, 15 97.25 96. 70 G.12 Caland little srag. 0.20 Araoc. and little cal. 0.05 Ara, and cal. 0. 43 Arag. an little cal. 6.25. Arag, and little cal. 0.12 0.16 0. 21 0. 20 0.21 .4 ot -55 29 da ih... =| eee ee [eee eee ee oe ee ee cnn fen eeeweeee aT 10. 72 $3.39 4h 100.00 j 2 2.83 95. 66 1.06 100.00 .27 4.95 93.89 69 100.00 | 1 4 1.76 96. 55 1.20 190.00] 19 1,17 97. 35 1.08 100.00 & Average of 15 analyses of madreporarian reef corals (Clarke and Wheeler, 1917). 9. Coarse fors linteral beach sand Chk. 3). 10. Fine beaca sand (ik. 3). 11. Meduin sund—tsenan, od fect (Mik. 51). 1% Medssand and ffadimeda debris—ligcan, 109 feet, (Bik. 713). 13. Ifalimeda dcbris—lagoon, 156 feet (Bik. 348). . Sediment analyses (percent) from Bikini Atoll (after Emery, Tracey and Ladd, 1954, p. 67). A-8