AVERAGED BY 50 years, same depths Original data sheets are also provided. Ice age (yrs before 1950) delta 18O MSAF(MSA/(MSA+nssSO4)% MSA conc.(ppb) 275 -35.0 9.5 3.1 325 -35.3 9.8 3.5 375 -35.1 9.3 3.3 425 -35.2 9.8 3.0 475 -35.1 6.5 2.7 525 -34.9 10.0 3.3 575 -35.2 12.5 4.0 625 -35.1 8.7 2.9 675 -34.9 8.5 3.2 725 -35.0 10.2 4.3 775 -35.3 8.6 3.2 825 -34.6 11.8 4.3 875 -35.0 11.3 4.1 925 -34.9 8.1 3.1 975 -34.5 12.2 4.3 1025 -34.8 10.8 4.7 1075 -35.2 9.6 3.8 1125 -35.2 8.0 3.8 1175 -34.9 10.5 4.7 1225 -35.3 10.3 2.5 1275 -35.0 6.9 2.9 1325 -35.0 12.2 4.6 1425 -34.8 12.0 4.4 1475 -34.8 11.3 4.0 1525 -34.6 12.4 4.3 1575 -35.1 14.2 4.2 1625 -34.8 12.1 4.4 1675 -34.6 10.7 4.7 1725 -35.1 13.1 4.6 1775 -35.2 12.7 4.8 1825 -34.8 12.9 4.3 1875 -34.6 11.2 4.5 1925 -34.9 13.3 4.3 1975 -34.5 11.7 4.0 2025 -34.6 7.9 3.7 2075 -34.2 8.3 4.0 2125 -35.0 9.6 4.3 2175 -34.7 12.4 4.6 2225 -34.5 10.7 4.5 2275 -35.0 11.4 4.4 2325 -34.6 11.6 4.6 2375 -34.3 11.5 4.2 2425 -35.1 9.9 4.4 2475 -34.7 12.8 4.7 2525 -34.6 12.2 4.5 2575 -34.8 10.4 4.5 2625 -34.9 10.9 4.6 2675 -34.9 11.7 4.7 2725 -34.6 11.6 4.3 2775 -34.9 13.4 4.9 2825 -34.7 13.7 4.5 2875 -34.7 12.3 4.2 2925 -34.5 13.3 4.7 2975 -35.1 12.0 4.9 3025 -34.8 12.3 4.3 3075 -34.6 11.8 4.6 3125 -34.7 9.8 3.9 3175 -34.2 12.6 4.5 3225 -34.4 9.5 4.4 3275 -34.2 12.7 4.7 3325 -34.5 12.2 4.0 3375 -34.9 10.1 3.7 3425 -35.2 6.2 5.5 3475 -34.2 13.3 4.5 3525 -34.4 9.7 3.7 3575 -34.3 9.4 3.8 3625 -34.3 10.4 4.2 3675 -34.8 10.2 3.6 3725 -34.9 9.5 3.6 3775 -34.7 7.9 3.6 3825 -35.0 11.0 4.0 3875 -35.0 10.4 4.0 3925 -34.9 8.2 3.3 3975 -34.6 10.1 3.4 4025 -34.5 13.0 3.7 4075 -34.5 12.0 5.2 4125 -34.2 8.6 3.4 4175 -34.4 10.2 3.7 4225 -34.5 10.4 4.1 4275 -34.2 9.0 4.0 4325 -34.6 12.3 3.6 4375 -34.8 9.0 3.4 4425 -34.5 11.4 3.9 4475 -34.9 9.5 3.7 4525 -34.5 11.7 3.9 4575 -34.4 10.4 4.2 4625 -35.0 9.0 3.3 4675 -34.8 9.6 3.7 4725 -34.7 8.6 3.4 4775 -34.9 9.1 3.8 4825 -34.6 10.3 3.2 4875 -34.1 8.5 3.4 4925 -34.3 10.1 4.2 4975 -34.4 10.2 3.8 5025 -34.3 9.0 3.9 5075 -34.6 3.3 3.0 5125 -34.3 4.5 2.9 5175 -34.0 5.1 2.8 5225 -34.4 10.1 3.4 5275 -34.8 9.5 3.6 5325 -34.7 8.9 3.6 5375 -34.9 7.7 3.1 5425 -34.6 9.5 3.2 5475 -34.3 7.4 3.4 5525 -34.3 7.8 3.3 5575 -34.3 9.2 3.6 5625 -34.3 10.1 3.5 5675 -34.3 10.1 3.3 5725 -34.6 8.3 3.9 5775 -34.5 9.3 3.6 5825 -34.6 10.2 3.4 5875 -34.1 6.4 3.7 5925 -34.5 7.8 3.3 5975 -34.3 9.0 3.7 6025 -34.5 10.8 3.3 6075 -34.6 7.8 3.0 6125 -34.5 9.2 2.8 6175 -34.4 8.3 3.2 6225 -34.6 7.9 3.0 6275 -34.9 7.7 2.8 6325 -34.2 8.8 3.5 6375 -34.4 8.2 3.8 6425 -34.6 9.3 3.5 6475 -34.4 7.1 3.1 6525 -34.6 9.4 3.6 6575 -34.6 6.3 2.8 6625 -34.6 8.8 3.3 6675 -34.4 7.6 3.0 6725 -34.6 8.1 3.5 6775 -33.8 8.4 2.8 6825 -33.6 8.4 3.2 6875 -34.2 8.2 2.8 6925 -34.2 6.8 3.3 6975 -34.3 8.9 3.5 7025 -34.4 6.7 2.6 7075 -34.8 7.6 2.9 7125 -34.6 6.8 3.4 7175 -34.4 6.2 2.9 7225 -34.7 4.3 3.0 7275 -34.5 6.9 2.8 7325 -34.0 7.4 2.6 7375 -34.3 7.3 3.3 7425 -34.2 8.2 3.1 7475 -34.4 7.0 3.0 7525 -34.7 5.5 2.1 7575 -34.3 4.8 2.5 7625 -34.1 4.7 2.8 7675 -33.9 7.6 2.6 7725 -34.0 4.9 2.1 7775 -34.1 4.9 2.2 7825 -33.8 6.5 2.8 7875 -34.3 6.5 2.6 7925 -34.4 6.5 2.7 7975 -34.0 5.5 2.7 8025 -34.8 8.9 3.1 8075 -34.9 6.4 3.5 8125 -35.1 10.2 3.0 8175 -35.8 6.7 3.2 8225 -36.1 8.1 3.2 8275 -34.9 5.4 2.8 8325 -34.7 6.3 3.2 8375 -34.9 8.2 3.3 8425 -34.7 9.4 3.9 8475 -34.7 6.8 2.6 8525 -34.9 6.6 2.7 8575 -34.5 7.6 3.0 8625 -34.6 7.2 2.8 8675 -34.7 7.0 2.9 8725 -34.4 7.2 3.0 8775 -34.5 5.5 2.8 8825 -34.7 7.9 2.9 8875 -34.1 6.6 2.8 8925 -34.4 5.5 2.3 8975 -34.8 6.9 2.5 9025 -34.5 5.4 2.3 9075 -34.3 8.5 3.2 9125 -34.8 6.2 2.8 9175 -34.6 6.0 1.9 9225 -35.0 4.2 1.8 9275 -34.5 3.4 1.9 9325 -34.3 5.1 2.1 9375 -32.8 5.0 2.3 9425 -33.5 4.4 2.0 9475 -34.2 1.8 1.7 9525 -34.1 4.0 2.4 9575 -34.3 2.8 1.4 9625 -33.8 3.2 1.6 9675 -33.7 2.8 1.7 9725 -34.5 1.4 1.3 9775 -33.7 2.6 1.6 9825 -34.6 3.0 1.6 9875 -34.1 1.9 1.0 9925 -34.4 1.8 1.5 9975 -34.3 2.6 1.7 10025 -34.4 3.5 2.2 10075 -35.0 3.0 1.8 10125 -34.2 2.9 1.6 10175 -34.8 2.4 1.3 10225 -34.7 2.8 1.2 10275 -35.1 2.0 1.6 10325 -35.9 3.4 1.3 10375 -35.7 2.0 1.1 10425 -35.3 2.5 1.5 10475 -35.9 2.6 1.5 10525 -35.5 2.8 1.1 10575 -35.9 1.9 1.5 10625 -36.0 1.8 0.7 10675 -36.1 3.4 1.7 10725 -35.5 1.7 1.3 10775 -36.0 2.6 1.2 10825 -36.2 2.5 1.5 10875 -36.9 1.1 0.7 10925 -36.5 2.5 1.2 10975 -36.3 2.6 1.0 11025 -36.5 1.4 1.0 11075 -36.6 1.0 0.9 11125 -36.8 2.1 1.2 11175 -35.8 1.4 1.0 11225 -36.8 1.1 1.0 11275 -36.8 1.3 1.5 11325 -38.3 1.9 1.2 11375 -38.1 1.1 0.9 11425 -37.2 1.9 1.4 11475 -36.8 1.8 1.5 11525 -36.5 3.7 1.9 11575 -36.5 5.4 2.3 11625 -38.7 4.4 2.4 11675 -40.3 6.0 2.5 11725 -40.0 4.6 2.9 11775 -40.5 2.1 2.5 11825 -40.5 1.8 2.2 11925 -40.7 1.2 1.7 12075 -40.1 1.3 2.0 12125 -40.7 1.1 1.8 12225 -40.3 3.0 4.4 12275 -40.4 1.7 3.9 12375 -40.1 2.8 4.3 12425 -41.3 3.3 3.2 12525 -40.8 4.7 2.3 12575 -41.7 3.5 2.0 12675 -40.9 3.9 2.8 12725 -40.6 2.7 2.6 12825 -40.5 3.0 2.5 12875 -38.8 4.8 2.4 12925 -38.2 4.1 2.2 12975 -38.4 5.7 2.7 13025 -38.6 5.3 2.7 13075 -39.3 3.9 2.2 13125 -41.0 1.9 1.8 13175 -39.7 2.0 1.8 13225 -39.2 1.7 2.4 13275 -38.5 1.1 2.5 13325 -38.5 3.0 2.6 13375 -37.2 6.0 2.7 13425 -38.0 5.3 3.5 13475 -37.8 4.8 3.2 13525 -37.4 2.9 2.5 13575 -38.2 4.4 2.5 13625 -38.4 4.0 2.7 13675 -38.1 4.9 3.1 13725 -37.8 3.2 2.7 13775 -37.9 3.7 3.0 13825 -37.8 1.8 2.3 13875 -38.2 2.4 2.1 13925 -37.7 2.4 1.7 13975 -38.4 2.1 2.4 14025 -39.2 2.5 2.1 14075 -38.5 1.7 1.9 14125 -37.8 1.9 1.9 14175 -37.4 2.4 2.2 14225 -36.9 1.7 1.6 14275 -36.4 2.2 1.7 14325 -36.1 2.8 2.2 14375 -36.4 2.6 2.1 14425 -35.6 3.6 2.4 14475 -35.3 2.0 1.7 14525 -35.4 2.1 1.5 14575 -36.3 1.5 1.8 14625 -37.6 2.2 1.6 14675 -39.9 4.6 2.1 14725 -39.0 4.6 1.7 14825 -40.0 5.9 3.3 14875 -40.2 5.1 3.1 14975 -39.7 1.5 2.9 15025 -38.8 1.7 2.6 15125 -38.7 1.8 2.9 15175 -39.3 1.5 2.9 15275 -39.4 1.1 2.6 15325 -39.4 1.6 2.4 15425 -39.3 1.4 3.4 15475 -39.6 1.5 2.3 15575 -40.6 1.7 2.7 15675 -40.5 1.4 2.3 15725 -40.6 1.3 2.3 15925 -41.2 1.3 2.3 16075 -40.2 1.1 2.6 16175 -40.2 1.2 2.2 16225 -40.3 1.1 2.8 16375 -40.1 1.1 2.2 16475 -41.3 0.9 2.4 16575 -40.6 0.9 2.1 16625 -40.7 1.0 2.3 16725 -40.4 1.1 2.5 16825 -40.0 1.0 2.5 16925 -40.8 1.0 2.5 17075 -40.8 0.9 1.9 17175 -40.2 0.8 2.2 17225 -40.0 0.8 2.2 17325 -39.9 0.9 2.3 17425 -40.5 1.0 2.5 17525 -39.9 1.4 2.9 17575 -40.2 1.5 3.1 17775 -40.3 2.6 3.8 17975 -39.3 1.5 3.4 18075 -40.5 1.6 3.3 18175 -39.4 1.8 2.9 18275 -39.9 1.3 2.9 18375 -39.7 1.5 3.0 18575 -39.8 1.6 2.8 18775 -39.3 1.8 3.4 18875 -39.3 1.8 3.5 18975 -39.3 2.0 3.3 19075 -39.0 1.8 3.4 19175 -38.7 1.6 3.3 19325 -39.9 1.5 2.6 19425 -39.6 1.6 2.7 19625 -40.2 1.8 2.8 19725 -39.2 1.6 2.6 19925 -39.5 1.7 3.1 20175 -40.5 1.6 3.8 20275 -40.6 2.3 3.6 20375 -39.2 1.4 2.8 20575 -38.9 1.5 3.3 20675 -40.1 2.1 3.2 20775 -39.7 2.1 3.5 20875 -40.8 1.9 3.6 21075 -40.5 1.3 2.7 21325 -41.4 1.3 3.0 21425 -41.0 2.0 3.8 21525 -40.9 1.6 3.6 21775 -40.7 1.0 2.2 21875 -40.8 1.0 2.3 21975 -41.0 1.4 2.6 22075 -40.5 1.4 2.4 22325 -40.9 1.5 3.0 22575 -40.7 1.4 2.8 22675 -40.7 1.7 3.0 22775 -40.7 1.6 2.8 22875 -39.2 1.7 2.9 22975 -40.4 1.5 2.8 23075 -40.6 1.4 2.4 23325 -38.3 2.0 3.4 23525 -41.6 3.5 3.5 23675 -41.9 2.2 3.2 23875 -42.0 0.8 2.7 23975 -42.7 0.9 2.9 24125 -41.9 0.7 2.4 24225 -41.7 0.8 2.6 24375 -40.9 0.8 2.5 24475 -40.8 1.6 3.2 24975 -40.1 1.2 3.0 25125 -41.1 1.2 2.5 25275 -40.9 1.6 3.3 25775 -40.6 0.8 3.5 25925 -41.6 0.9 2.8 26075 -40.4 1.4 3.0 26225 -40.5 1.8 3.0 26325 -40.9 1.3 3.2 26475 -40.6 1.1 2.4 26625 -41.0 1.7 3.0 26975 -41.0 1.7 3.3 27125 -40.6 1.7 3.3 27525 -38.8 5.1 4.1 27625 -37.8 4.9 4.3 27725 -37.0 4.1 3.2 28525 -41.5 0.7 2.1 28625 -40.0 3.7 3.6 28725 -38.5 4.3 3.3 28925 -37.9 4.5 3.4 29025 -40.2 5.3 3.4 29125 -42.0 1.0 2.3 29275 -41.3 0.6 1.9 29375 -41.7 0.7 1.8 29525 -42.2 0.7 1.8 29825 -42.4 1.0 2.7 30125 -42.6 0.5 1.7 30375 -41.7 1.4 3.1 30475 -41.2 2.5 3.2 30625 -41.1 0.8 1.7 30725 -42.2 1.2 2.9 30875 -42.2 1.0 2.5 31125 -42.1 0.9 2.7 31375 -41.8 1.4 2.9 31625 -40.5 3.3 3.5 31775 -39.7 4.9 3.4 31875 -39.3 4.7 3.2 32025 -38.4 4.4 2.6 32125 -37.7 5.4 3.8 32225 -38.9 2.0 2.8 32375 -41.6 1.0 2.5 32525 -42.2 0.7 1.7 32625 -42.2 0.7 1.7 32775 -42.6 0.9 2.1 32925 -43.1 2.2 2.6 33025 -40.0 4.5 2.6 33175 -39.1 4.5 3.2 33325 -38.8 4.2 2.7 33475 -38.2 1.6 2.9 33575 -39.8 0.8 1.8 33725 -41.2 1.1 2.8 33875 -41.2 0.7 2.2 33975 -40.9 1.1 2.8 34125 -42.1 1.2 2.6 34225 -41.8 1.5 2.6 34375 -41.6 3.3 3.1 34575 -39.5 2.9 2.9 34675 -40.0 3.3 2.6 34875 -38.9 6.1 3.6 34975 -38.2 4.2 3.0 35075 -38.6 3.3 2.0 35125 -38.1 4.1 2.6 35225 -38.6 4.7 2.4 35425 -41.7 1.0 2.4 35575 -41.6 0.7 1.8 35725 -43.0 0.7 2.1 36075 -41.3 2.2 3.4 36175 -41.0 3.3 4.3 36275 -39.6 5.4 4.6 36375 -39.1 5.6 5.0 36475 -40.5 5.7 5.9 36575 -40.4 3.2 3.2 36725 -39.4 3.8 3.9 36825 -38.2 5.1 3.5 36925 -38.4 3.7 3.2 37025 -38.7 4.2 3.5 37125 -38.1 4.2 3.3 37225 -38.1 5.8 3.8 37375 -38.3 5.2 3.6 37475 -37.9 5.7 3.3 37575 -37.5 5.1 3.4 37675 -37.6 3.5 3.1 37825 -37.4 4.3 3.0 37925 -37.7 4.8 3.3 38075 -37.4 4.0 3.0 38325 -37.3 5.7 3.6 38425 -40.6 5.7 3.3 38725 -41.3 1.0 2.0 38875 -41.4 1.1 2.6 39025 -41.4 1.2 2.8 39175 -41.2 0.6 1.5 39325 -40.8 0.7 1.8 39525 -41.7 0.9 2.6 39875 -41.3 2.9 3.1 40025 -40.2 1.6 2.6 40125 -38.8 1.6 2.9 40225 -40.5 2.0 3.7 40375 -40.8 1.8 3.0 40575 -41.7 5.0 3.3 40625 -40.6 5.9 3.8 40725 -39.5 4.0 3.2 40825 -38.6 5.3 3.3 40925 -39.2 5.6 3.0 41025 -38.7 6.9 3.6 41075 -37.9 3.4 4.4 41175 -40.3 1.3 2.5 41275 -41.0 1.0 2.4 41375 -41.5 1.0 2.2 41475 -41.6 0.8 1.7 41575 -40.6 2.5 2.8 41675 -39.8 3.5 3.1 41825 -39.7 4.5 3.9 41925 -39.4 4.6 3.8 42125 -38.2 5.8 3.1 42375 -38.2 5.0 3.4 42475 -38.1 5.2 3.2 42725 -41.8 0.9 2.6 42825 -41.7 1.2 2.8 43075 -41.2 1.2 2.5 43225 -39.6 3.0 3.8 43325 -39.2 3.5 2.7 43425 -40.2 3.4 3.2 43525 -39.9 3.7 2.9 43625 -39.9 3.5 3.0 43875 -39.1 5.8 4.1 44025 -39.6 5.0 3.7 44125 -38.9 5.7 3.2 44225 -38.8 4.6 3.0 44275 -38.2 2.6 3.1 44375 -38.1 5.4 3.1 44475 -38.3 6.7 3.5 44575 -38.1 4.8 3.5 44675 -38.4 6.3 3.1 44775 -37.7 6.0 3.5 44825 -37.5 7.1 3.5 44925 -37.3 5.2 3.3 45025 -37.3 6.3 3.9 45125 -36.8 6.9 3.8 45275 -36.8 5.9 3.6 45375 -38.9 4.1 2.9 45475 -40.9 5.4 3.2 45575 -41.0 4.1 2.8 45725 -40.4 5.3 3.3 45875 -40.9 1.9 3.4 46025 -40.6 1.2 2.7 46175 -41.2 0.9 1.8 46525 -39.6 0.5 1.7 46675 -39.6 1.5 3.0 46775 -39.0 3.9 4.0 46925 -38.4 3.6 3.7 47025 -39.3 4.5 3.8 47225 -40.8 4.3 2.6 47525 -39.4 1.9 2.7 47625 -39.8 2.3 3.0 47775 -39.4 4.4 3.0 47875 -39.7 4.4 3.3 48175 -39.2 3.5 2.9 48275 -39.1 4.0 3.0 48375 -39.5 3.0 2.7 48525 -39.4 3.3 2.8 48775 -38.8 4.1 2.9 48925 -38.9 3.5 2.9 49075 -39.3 4.2 3.5 49425 -38.3 4.9 3.1 49775 -38.1 5.3 2.8 49875 -38.0 5.4 3.0 51925 -37.2 5.4 2.9 52925 -40.5 1.1 2.1 54325 -40.2 3.7 2.8 55575 -38.6 5.2 3.3 56675 -38.7 3.6 3.1 58975 -40.5 0.5 1.5 64075 -41.9 2.1 3.5 69975 -39.5 3.5 3.1 73275 -41.9 1.9 2.7 78025 -37.7 4.1 2.6 81625 -36.6 2.9 2.0 85225 -39.3 2.2 2.4 86525 -40.6 2.7 3.0 92025 -39.6 4.2 3.3 97075 -38.0 5.7 3.1 98075 -37.6 4.7 2.4