# NOAA Paleoclimatology Program - Paleocean Site Data # bc004a_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-004A # 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-004A depth yrBP carb% 0.5 47 20.5 1.5 141 18.1 2.5 236 16.2 3.5 330 22.7 4.5 424 26.1 5.5 433 21.4 6.5 442 28.6 7.5 451 32.7 8.5 460 34.8 9.5 469 36 10.5 619 35.4 11.5 701 33.2 12.5 783 33.8 13.5 866 35.6 14.5 897 33.3 15.5 928 32.7 16.5 959 33.9 17.5 989 32.3 18.5 1020 32.1 19.5 1052 33.3 20.5 1083 30.5 21.5 1114 30.7 22.5 1146 30.2 23.5 1177 30.1 24.5 1190 28.8 25.5 1203 27.8 26.5 1216 29 27.5 1228 28.1 28.5 1241 27.4 29.5 1254 26.5 30.5 1482 28.5 31.5 1709 33 32.5 1937 33.9 33.5 2062 38.5 34.5 2188 33.4 35.5 2313 34 36.5 2438 34.7 37.5 2564 34.5 38.5 2689 33.2 39.5 2719 33.6 40.5 2748 32.7 41.5 2778 33.1 42.5 2808 33.4 43.5 2837 33.4 44.5 2867 33.8