# NOAA Paleoclimatology Program - Paleocean Site Data # bc004d_carb-tab.txt # Carbonate data only # File Created: 19-Jan-2005 # #********************************************************************************* # Please cite the contributor and the original publications when using these data #********************************************************************************* # # Missing Values indicated by '-999' # # PI: Lloyd D. Keigwin # Core/Site: BC-004D # Latitude: 33.42.36N ( 33.71) # Longitude: 57.37.42W ( -57.62833) # Water Depth(m): 4418 # # Publications: # Keigwin, L.D. 1996. The Little Ice Age and Medieval Warm Period in the Sargasso # Sea. Science 274:1504-1508. #------------------ # # Description & Notes: # Atlantic temperature during the past 2,000 years. # Data precision- carbonate: ~1%; d18-O: ~0.1 permil # # Variables: # depth Depth (cm) # yrBP radiocarbon years B.P. (Libby half-life; B.P. = 1950) # carb% Calcium Carbonate percent # # CORE: BC-004D depth yrBP carb% 0 0 22.1 1 76 20.3 2 153 21.4 3 229 17.9 4 306 16.9 5 382 16.3 6 442 15.3 7 470 20.3 8 476 22.9 9 476 19.1 10 478 30.9 11 523 34 12 614 32.6 13 704 35.7 14 779 31.7 15 839 31.5 16 899 33.9 17 959 32.9 18 986 33.1 19 1013 32 20 1040 31 22 1093 30.2 23 1120 30.7 24 1147 29.9 25 1174 27.2 26 1200 28.1 27 1227 28.6 28 1254 24.9 29 1337 27.1 30 1420 26.6 31 1502 29 32 1585 29.6 33 1668 32.5 34 1791 32.3 35 1954 32.6 36 2117 32.8 37 2281 33.2 38 2444 32.9 39 2607 34 40 2692 34.3 41 2700 32.65 42 2706 34.4 43 2714 34.2 44 2720 34 45 2728 33.75 46 2789 33.5 47 2904 32.7 48 3019 28.3 49 3086 29.7 50 3106 29.35 51 3125 32.2