# North Atlantic DSDP545 Mid-Cretaceous Biomarker SST and Carbon Model Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # plus the Online Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/14568 # # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcanena2013/mcanena2013model.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography #-------------------- # Contribution_Date # Date: 2013-06-16 #-------------------- # Title # Study_Name: North Atlantic DSDP545 Mid-Cretaceous Biomarker SST and Carbon Model Data #-------------------- # Investigators # Investigators: McAnena, A.; Flögel, S.; Hofmann, P.; Herrle, J.O.; Griesand, A.; Pross, J.; Talbot, H.M.; Rethemeyer, J.; Wallmann, K.; Wagner, T. #-------------------- # Description_and_Notes # Description: Mid-Cretaceous (121 - 111 ma) Total Organic Carbon and Carbon burial flux data, plus pCO2 and carbon burial model # # sea floor areas m-2 % of global # Artic 8963842 1.5 # Western Interior Seaway 2345084 0.3 # Noregian Basin 11063834 1.4 # Pacific 273775109 66.5 # Thethys 70979032 12.3 # Indian O. 54376988 12.2 # S-Atlantic 4783017 1.0 # Southern Ocean 28415485 4.3 # Australian Basin 3128155 0.5 # #-------------------- # Publication # Authors: A. McAnena, S. Flögel, P. Hofmann, J.O. Herrle, A. Griesand, J. Pross, H.M. Talbot, J. Rethemeyer, K. Wallmann, and T. Wagner # Published_Date_or_Year: 2013-06-16 # Published_Title: Atlantic cooling associated with a marine biotic crisis during the mid-Cretaceous period # Journal_Name: Nature Geoscience # Volume: # Edition: Advance online publication # Issue: # Pages: # DOI: 10.1038/ngeo1850 # Abstract: Most of the marine biotic crises that occurred during the hot Mesozoic era have been linked to episodes of extreme warmth. Others, however, may have occurred during cooler intervals that interrupted Cretaceous greenhouse warmth. There are some indications of cooling in the late Aptian (116-114 Myr ago), but it has not been definitively linked to biotic crisis. Here we assess the timing and magnitude of late Aptian cooling and its association with biotic crises using a suite of geochemical and micropalaeontological assessments from a marine sediment core from the North Atlantic Ocean as well as global biogeochemical modelling. Sea surface temperatures derived from the TEX86 proxy suggest that surface waters cooled by about 5°C during the two million years, coincident with a positive d13C excursion of approximately 2 per mil in carbonates and organic carbon. Surface productivity was enhanced during this period, but the abundance of planktonic foraminifera and nannoconid phytoplankton declined. Our simulations with a biogeochemical model indicate that the d13C excursion associated with the cooling could be explained by the burial of about 812,000 gigatons of carbon over 2.5 million years. About 50% of the this carbon burial occurred in the Atlantic, Southern and Tethys ocean basins. We conclude that global cooling during greenhouse conditions can cause perturbations to marine ecosystems and biogeochemical cycles at scales comparable to those associated with global warming. #------------------ # Funding_Agency # Funding_Agency_Name: Deutsche Forschungsgemeinschaft (DFG) # Grant: #------------------ # Site_Information # Site_Name: DSDP545 # Location: Ocean>Atlantic Ocean>North Atlantic Ocean # Country: # Northernmost_Latitude: 33.6643 # Southernmost_Latitude: 33.6643 # Easternmost_Longitude: -9.3647 # Westernmost_Longitude: -9.3647 # Elevation: -3142 m #------------------ # Data_Collection # Collection_Name: DSDP545McAnena2013model # Earliest_Year: 121000000 # Most_Recent_Year: 111000000 # Time_Unit: CalYearBP # Core_Length: m # Notes: #------------------ # Chronology: # # For the construction of a time model we used the biostratigraphic information and time # estimates. Age assignment of the Paraticinella eubejaouaensis zone18 were derived as: # # Age (my) depth (m) # Top Paraticinella eubejaouaensis 112.5 377.61 (lowest estimate) # Base Paraticinella eubejaouaensis 114.3 464.83 # Top Globigerinelloides algerianus 116.0 490.43 # Base Globigerinelloides algerianus 119.0 518.04 # Base Globigerinelloides ferreolensis 120.6 523.76 # # The position of the top of the Paraticinella eubejaouaensis zone is uncertain because of the # presence of an unconformity located between 375.28 and 377.11 m separating Late Aptian # from Late Albian sediments. The sedimentation rate used for the calculation of the time # model in the range of the Paraticinella eubejaouaensis zone, therefore, represents the # minimum estimate. For age assignment of Kerguelen LIP emplacement see: # # Gradstein, F. M., Ogg, J.G. and Smith, A. G. 2004. A Geologic Time Scale 2004 (Cambridge Univ. Press) # # Coffin, M. F. and Eldholm, O. 1994. Large Igneous Provinces: Crustal structure, dimensions, # and external consequences. Rev. of Geophys. 32, 1-36. # # #---------------- # Variables # # Data variables follow (have no #) # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## age_calmaBP Age, , , calendar millions of years BP, , , , ,N ## d13CcarbPDB delta13C, calcium carbonate, , per mil PDB, , , , model,N ## co2_ppm CO2, , , ppm, , , , model,N ## corg_burial Organic Carbon burial, , , Tmol, , , , model,N #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: age_calmaBP d13CcarbPDB co2_ppm corg_burial 111 1.18282 1279.13089 4.64192 111.05 1.18282 1279.13089 4.64192 111.1 1.18282 1279.13089 4.64192 111.15 1.18282 1279.13089 4.64192 111.2 1.18282 1279.13089 4.64192 111.25 1.18282 1279.13089 4.64192 111.3 1.18282 1279.13089 4.64192 111.35 1.18282 1279.13089 4.64192 111.4 1.18282 1279.13089 4.64192 111.45 1.18282 1279.13089 4.64192 111.5 1.18282 1279.13089 4.64192 111.55 1.18282 1279.13089 4.64192 111.6 1.18282 1279.13089 4.64192 111.65 1.18282 1279.13089 4.64192 111.7 1.18282 1279.13089 4.64192 111.75 1.18282 1279.13089 4.64192 111.8 1.18282 1279.13087 4.64192 111.85 1.18282 1279.13083 4.64192 111.9 1.18282 1279.13068 4.64192 111.95 1.18282 1279.13014 4.64194 112 1.18282 1279.12848 4.64195 112.05 1.18284 1279.12779 4.642 112.1 1.18289 1279.21294 4.64231 112.15 1.18319 1280.19988 4.64493 112.2 1.18495 1285.78861 4.65963 112.25 1.19254 1304.81136 4.71178 112.3 1.21551 1348.26314 4.83717 112.35 1.26624 1420.14703 5.05676 112.4 1.35222 1510.5927 5.35276 112.45 1.46993 1598.85443 5.66992 112.5 1.60558 1663.81572 5.9409 112.55 1.74079 1693.33568 6.1163 112.6 1.85879 1686.61643 6.18145 112.65 1.94879 1650.66438 6.15416 112.7 2.00756 1595.29965 6.06904 112.75 2.03847 1529.65256 5.9613 112.8 2.04912 1460.59243 5.85773 112.85 2.04889 1392.49022 5.77484 112.9 2.04688 1327.65802 5.72056 112.95 2.05057 1267.00111 5.69671 113 2.06514 1210.62678 5.70105 113.05 2.09328 1158.30842 5.72886 113.1 2.13531 1109.79122 5.7739 113.15 2.18951 1064.96202 5.82906 113.2 2.25244 1023.91419 5.88692 113.25 2.31943 986.93604 5.94019 113.3 2.38505 954.44678 5.98233 113.35 2.44369 926.90222 6.0081 113.4 2.4902 904.69302 6.01416 113.45 2.52051 888.05816 5.99929 113.5 2.5321 877.03234 5.96443 113.55 2.52421 871.43497 5.91219 113.6 2.49772 870.89557 5.84623 113.65 2.45481 874.90113 5.77062 113.7 2.3985 882.8503 5.68924 113.75 2.33216 894.10307 5.60544 113.8 2.25912 908.02076 5.52195 113.85 2.18237 923.99517 5.44081 113.9 2.10446 941.46762 5.36345 113.95 2.02742 959.94003 5.29079 114 1.95277 978.97969 5.22335 114.05 1.88161 998.21958 5.16134 114.1 1.81462 1017.35559 5.10476 114.15 1.75222 1036.14178 5.05344 114.2 1.69457 1054.38459 5.00715 114.25 1.64169 1071.93661 4.96554 114.3 1.59344 1088.69024 4.9283 114.35 1.54963 1104.57174 4.89505 114.4 1.51 1119.53565 4.86543 114.45 1.47427 1133.55974 4.83911 114.5 1.44215 1146.64057 4.81575 114.55 1.41334 1158.78965 4.79506 114.6 1.38755 1170.03005 4.77676 114.65 1.3645 1180.39359 4.76059 114.7 1.34393 1189.91847 4.74632 114.75 1.3256 1198.64727 4.73373 114.8 1.30929 1206.62534 4.72263 114.85 1.29478 1213.89952 4.71287 114.9 1.28189 1220.51702 4.70427 114.95 1.27046 1226.52463 4.6967 115 1.26031 1231.96809 4.69004 115.05 1.25132 1236.89159 4.68419 115.1 1.24335 1241.33741 4.67905 115.15 1.23629 1245.34573 4.67454 115.2 1.23005 1248.95441 4.67057 115.25 1.22453 1252.19896 4.66709 115.3 1.21964 1255.11247 4.66404 115.35 1.21533 1257.72568 4.66135 115.4 1.21151 1260.067 4.659 115.45 1.20814 1262.16258 4.65693 115.5 1.20516 1264.03644 4.65511 115.55 1.20253 1265.71055 4.65352 115.6 1.20021 1267.20496 4.65211 115.65 1.19817 1268.53794 4.65088 115.7 1.19636 1269.72605 4.6498 115.75 1.19476 1270.78434 4.64885 115.8 1.19335 1271.72638 4.64801 115.85 1.19211 1272.56446 4.64728 115.9 1.19101 1273.30963 4.64664 115.95 1.19005 1273.97185 4.64607 116 1.1892 1274.56007 4.64558 116.05 1.18844 1275.08235 4.64514 116.1 1.18778 1275.54585 4.64475 116.15 1.18719 1275.95704 4.64441 116.2 1.18668 1276.32169 4.64412 116.25 1.18622 1276.64497 4.64385 116.3 1.18582 1276.93147 4.64362 116.35 1.18547 1277.18529 4.64342 116.4 1.18515 1277.41012 4.64325 116.45 1.18488 1277.6092 4.64309 116.5 1.18463 1277.78544 4.64295 116.55 1.18442 1277.94143 4.64283 116.6 1.18423 1278.07947 4.64272 116.65 1.18406 1278.2016 4.64263 116.7 1.18392 1278.30963 4.64255 116.75 1.18379 1278.40518 4.64247 116.8 1.18367 1278.48967 4.64241 116.85 1.18357 1278.56437 4.64234 116.9 1.18348 1278.63041 4.6423 116.95 1.1834 1278.68879 4.64226 117 1.18334 1278.74038 4.64222 117.05 1.18327 1278.78598 4.64218 117.1 1.18322 1278.82627 4.64215 117.15 1.18317 1278.86187 4.64213 117.2 1.18313 1278.89332 4.6421 117.25 1.18309 1278.9211 4.64208 117.3 1.18306 1278.94565 4.64206 117.35 1.18303 1278.96732 4.64205 117.4 1.18301 1278.98647 4.64203 117.45 1.18298 1279.00338 4.64202 117.5 1.18296 1279.01832 4.64201 117.55 1.18295 1279.0315 4.642 117.6 1.18293 1279.04315 4.64199 117.65 1.18292 1279.05343 4.64198 117.7 1.18291 1279.06251 4.64198 117.75 1.18289 1279.07053 4.64198 117.8 1.18289 1279.07761 4.64196 117.85 1.18288 1279.08386 4.64196 117.9 1.18287 1279.08937 4.64195 117.95 1.18286 1279.09424 4.64195 118 1.18286 1279.09854 4.64195 118.05 1.18285 1279.10234 4.64195 118.1 1.18285 1279.10569 4.64195 118.15 1.18284 1279.10865 4.64194 118.2 1.18284 1279.11126 4.64194 118.25 1.18284 1279.11356 4.64194 118.3 1.18284 1279.11559 4.64194 118.35 1.18283 1279.11739 4.64194 118.4 1.18283 1279.11898 4.64194 118.45 1.18283 1279.12037 4.64194 118.5 1.18283 1279.12161 4.64194 118.55 1.18283 1279.1227 4.64194 118.6 1.18282 1279.12366 4.64194 118.65 1.18282 1279.12451 4.64194 118.7 1.18282 1279.12526 4.64194 118.75 1.18282 1279.12592 4.64194 118.8 1.18282 1279.1265 4.64192 118.85 1.18282 1279.12702 4.64192 118.9 1.18282 1279.12747 4.64192 118.95 1.18282 1279.12787 4.64192 119 1.18282 1279.12823 4.64192 119.05 1.18282 1279.12854 4.64192 119.1 1.18282 1279.12882 4.64192 119.15 1.18282 1279.12906 4.64192 119.2 1.18282 1279.12927 4.64192 119.25 1.18282 1279.12946 4.64192 119.3 1.18282 1279.12963 4.64192 119.35 1.18282 1279.12978 4.64192 119.4 1.18282 1279.12991 4.64192 119.45 1.18282 1279.13002 4.64192 119.5 1.18282 1279.13013 4.64192 119.55 1.18282 1279.13022 4.64192 119.6 1.18282 1279.13029 4.64192 119.65 1.18282 1279.13036 4.64192 119.7 1.18282 1279.13043 4.64192 119.75 1.18282 1279.13048 4.64192 119.8 1.18282 1279.13053 4.64192 119.85 1.18282 1279.13057 4.64192 119.9 1.18282 1279.13061 4.64192 119.95 1.18282 1279.13064 4.64192 120 1.18282 1279.13067 4.64192 120.05 1.18282 1279.1307 4.64192 120.1 1.18282 1279.13072 4.64192 120.15 1.18282 1279.13074 4.64192 120.2 1.18282 1279.13076 4.64192 120.25 1.18282 1279.13077 4.64192 120.3 1.18282 1279.13079 4.64192 120.35 1.18282 1279.1308 4.64192 120.4 1.18282 1279.13081 4.64192 120.45 1.18282 1279.13082 4.64192 120.5 1.18282 1279.13083 4.64192 120.55 1.18282 1279.13083 4.64192 120.6 1.18282 1279.13084 4.64192 120.65 1.18282 1279.13085 4.64192 120.7 1.18282 1279.13085 4.64192 120.75 1.18282 1279.13085 4.64192 120.8 1.18282 1279.13086 4.64192 120.85 1.18282 1279.13086 4.64192 120.9 1.18282 1279.13086 4.64192 120.95 1.18282 1279.13087 4.64192 121 1.18282 1279.13087 4.64192