# Equatorial Pacific DSDP574 Miocene Biogenic Sediment 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/14191 # # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/piela2012/piela2012mar.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography #-------------------- # Contribution_Date # Date: 2013-04-10 #-------------------- # Title # Study_Name: Equatorial Pacific DSDP574 Miocene Biogenic Sediment Data #-------------------- # Investigators # Investigators: Piela, C.; Lyle, M.; Marcantonio, F.; Baldauf, J.; Olivarez Lyle, A. #-------------------- # Description_and_Notes # Description: Equatorial Pacific Deep Sea Drilling Project (DSDP) Site 574 Miocene # biogenic sediment data. Data include CaCO3, C-org, bio-Sio2, Ba, U, # and Th data from Piela et al 2012. CaCO3 and C-org were measured # with coulometer, bio-SiO2 by digestion and molybdate blue method, # Ba-U-Th by ICP-MS on a total sediment digestion. #-------------------- # Publication # Authors: Piela, C., M. Lyle, F. Marcantonio, J. Baldauf, and A. Olivarez Lyle. # Published_Date_or_Year: 2012-04-19 # Published_Title: Biogenic sedimentation in the equatorial Pacific: Carbon cycling and paleoproduction, 12-24 Ma # Journal_Name: Paleoceanography # Volume: 27 # Edition: # Issue: # Pages: # DOI: 10.1029/2011PA002236 # Abstract: The equatorial Pacific is an important part of the global carbon cycle and has been affected by climate change through the Cenozoic (65 Ma to present). We present a Miocene (12-24 Ma) biogenic sediment record from Deep Sea Drilling Project (DSDP) Site 574 and show that a CaCO3 minimum at 17 Ma was caused by elevated CaCO3 dissolution. When Pacific Plate motion carried Site 574 under the equator at about 16.2 Ma, there is a minor increase in biogenic deposition associated with passing under the equatorial upwelling zone. The burial rates of the primary productivity proxies biogenic silica (bio-SiO2) and biogenic barium (bio-Ba) increase, but biogenic CaCO3 decreases. The carbonate minimum is at ~17 Ma coincident with the beginning of the Miocene climate optimum; the transient lasts from 18 to 15 Ma. Bio-SiO2 and bio-Ba are positively correlated and increase as the equator was approached. Corg is poorly preserved, and is strongly affected by changing carbonate burial. Terrestrial 232Th deposition, a proxy for aeolian dust, increases only after the Site 574 equator crossing. Since surface production of bio-SiO2, bio-Ba, and CaCO3 correlate in the modern equatorial Pacific, the decreased CaCO3 burial rate during the Site 574 equator crossing is driven by elevated CaCO3 dissolution, representing elevated ocean carbon storage and elevated atmospheric CO2. The length of the 17 Ma CaCO3 dissolution transient requires interaction with a 'slow' part of the carbon cycle, perhaps elevated mantle degassing associated with the early stages of Columbia River Basalt emplacement. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: DSDP574 # Location: Ocean>Pacific Ocean>Eastern Pacific Ocean # Country: # Northernmost_Latitude: 4.2087 # Southernmost_Latitude: 4.2087 # Easternmost_Longitude: -133.3302 # Westernmost_Longitude: -133.3302 # Elevation: 4561 m #------------------ # Data_Collection # Collection_Name: DSDP574PiellaMAR # Earliest_Year: 24000000 # Most_Recent_Year: 12500000 # Time_Unit: Cal Yr BP # Core_Length: m # Notes: #------------------ # Chronology: # # Table 1: Chronostratigraphy for DSDP Site 574 # AGE-PEAT 320/321 MICRO "DSDP Leg 85, Site 574" Depths 1 Age- magnetic reversal Age- Diatoms Age Radiolaria Age- calcareous nannofossils Age- foraminifera Avg Rad Depth Avg Diatom Depth Avg Nanno Depth Avg Foram Depth # GROUP DATUM NAME Site 574 Ma Ma Ma Ma Ma mbsf mbsf mbsf mbsf # 0.000 top of core 0.00 0.000 0.00 0 0.00 0.00 0 # 0.440 N top Pseudoemiliania lacunosa 2.25 0.44 2.25 # 0.443 R top Stylatractus universus 3.15 0.443 3.15 # 1.308 R base Lamprocyrtis nigriniae (haysi) 10.88 1.308 10.875 # 1.332 R top Theocorythium vetulum 10.88 1.332 10.875 # 1.778 M top Olduvai (C2n) 8.58 1.778 # 1.757 R base Theocorythium trachelium 10.88 1.757 10.875 # 1.920 D top Rhizosolenia praebergonii 9.25 1.92 9.25 # 1.930 N top Discoaster brouweri 9.25 1.93 9.25 # 1.945 M base Olduvai (C2n) 9.59 1.945 # 2.077 R top Pterocanium prismatium 10.88 2.077 10.875 # 2.390 N top Discoaster pentaradiatus 9.25 2.39 # 2.581 M top Gauss (C2An.1n) 12.10 2.581 # 2.800 N top Discoaster tamalis 13.00 2.80 # 3.032 F base C2An.1n (top Kaena) 15.02 3.032 # 3.700 N top Reticulfenestra pseudoumbilicus 18.75 3.70 18.75 # 3.840 D base Thalassiosira convexa var. convexa 21.00 3.84 21 # 3.850 F top Globorotalia (Hirsutella) margaritae 16.64 3.85 16.635 # 3.977 R top Spongaster pentas 19.69 3.977 19.685 # 4.032 R top Phormostichoartus doliolum 16.64 4.032 19.685 # 4.187 M top C3n.1n (top Cochiti) 21.28 4.187 # 4.264 R base Spongaster tetras 21.34 4.264 19.685 # 4.300 M base C3n.1n (base Cochiti) 24.83 4.300 # 4.493 M top C3n.2n (top Nunivak) 26.82 4.493 # 4.631 M base C3n.2n (base Nunivak) 27.83 4.631 # 4.799 M top C3n.3n (top Sidufjall) 29.08 4.799 # 4.690 D top Fragilariopsis (Nitzschia) cylindrica 31.00 4.69 # 4.896 M base C3n.3n (base Sidufjall) 29.57 4.896 # 4.997 M top C3n.4n (top Thvera) 30.12 4.960 # 5.040 N top Ceratolithus acutus 28.25 5.04 28.25 # 5.235 M base C3n.4n (base Thvera) 31.57 5.235 # 5.350 N base Ceratolithus acutus 37.75 5.35 37.75 # 5.570 F base Globborotalia tumida 37.00 5.57 # 5.573 R top Spongaster berminghami 28.53 5.573 28.525 # 5.700 D base Thalassiosira oestrupii 35.00 5.70 # 5.980 N top Nicklithus amplificus 41.00 5.98 # 6.033 M top C3An.1n 39.90 6.033 # 6.280 D top Fragilariopsis (Nitzchia) miocenica 41.00 6.28 # 6.599 R top Calocycletta caepa 47.13 6.599 47.13 # 6.733 M base C3An.2n 45.50 6.733 # 6.860 D base Thalassiosira miocenica 47.00 6.86 # 6.910 D base Thalassiosira convexa 46.00 6.91 # 7.530 D top Nitzschia porteri 53.00 7.53 # 7.750 R Trans: Stichocorys delmontensis to S. peregrina 54.00 7.75 54 # 7.860 D top Thalassiosira burckliana 62.00 7.86 62 # 8.250 R base Solenosphaera omnitubus 56.59 8.25 56.59 # 8.392 R top Diartus hughesi 56.59 8.392 56.59 # 8.508 R base Didymocyrtis penultima 67.50 8.508 67.5 # 8.580 F base Globoratalia plesiotumida 70.00 8.58 # 8.629 R top Diartus petterssoni 67.50 8.629 67.5 # 8.760 R Trans: D. petterssoni > D. hughesi 70.57 8.76 70.565 # 8.769 M top C4An 76.94 8.769 # 8.950 R top Stichocorys wolffii 72.50 8.95 72.5 # 8.980 D base Nitzschia fossiis 66.25 8.98 66.25 # 9.090 D base Thalassiosira burkliana 68.50 9.09 68.5 # 9.690 N top Discoaster hamatus 75.25 9.69 75.25 # 9.930 D top Actinocylus moronensis 82.50 9.930 82.5 # 10.010 R base Didymocyrtis antepenultima 82.50 10.01 82.5 # 10.550 N base Discoaster hamatus 85.00 10.55 # 10.890 N base Catinaster coalitus 100.00 10.89 # 11.160 D top Crasepedodicus coscinodiscus 97.50 11.160 97.5 # 11.540 F top Globigerinoides subquadratus 112.85 11.54 112.85 # 11.580 N first common occur. Discoaster kugleri 112.85 11.58 112.85 # 11.620 D base Hemidiscus cuneiformis 102.00 11.62 102 # 11.630 F base Globigerina nepenthes 103.00 11.63 # 11.790 F top Globoratalia fohsi s.l. 112.00 11.79 # 11.855 R top Cyrtocapsella cornuta 106.50 11.855 106.5 # 11.912 R top Cyrtocapsella tetrapera 110.63 11.912 110.625 # 11.912 R top Lithopera renzae 110.63 11.912 110.625 # 12.111 R base Diartus petterssoni 123.00 12.111 123 # 12.120 N top Coronocyclus nitescens 112.85 12.12 112.85 # 12.490 D top Crucidenticula (Denticulopsis) nicobarica 125.45 12.49 125.45 # 12.949 R base Lithopera neotera 129.87 12.949 129.87 # 13.000 D top Coscinodiscus lewisianus 127.50 13.00 127.5 # 13.410 F base Globoratalia fohsi s.l. 135.00 13.41 # 13.410 D top Thalassiosira tappanae 139.10 13.41 139.1 # 13.520 D base Triceratium cinnamomeum 145.80 13.70 145.8 # 13.530 N top Sphenolithus heteromorphus 130.10 13.53 130.1 # 13.530 N top Sphenolithus heteromorphus 150.05 13.53 150.05 # 13.770 F base Globoratalia praefohsi 147.00 13.77 # 14.190 D top Cestodiscus peplum 147.50 14.19 147.5 # 14.199 R top Didymocyrtis violina 160.00 14.199 160 # 14.229 R top Calocycletta costata 161.00 14.229 161 # 14.240 F base Globoratalia peripheroacuta 156.00 14.24 # 14.348 R top Didymocyrtis tubaria 161.00 14.348 161 # 14.660 F top Globigerinatella insueta 186.25 14.66 186.25 # 14.683 R top Dorcadospyris forcipata 180.00 14.683 180 # 14.740 F base Orbulina spp 173.00 14.74 # 14.826 R top Liriospyris stauropora 180.00 14.826 180 # 14.910 D top Annellus californicus 172.50 14.91 172.5 # 15.075 R base Dorcadospyris alata 189.50 15.075 189.5 # 15.270 D top Azpeitiea (Coscinodiscus) praenodulifer 180.65 15.27 180.65 # 15.360 D base Actinocyclus ingens 183.80 15.36 183.8 # 15.440 D top Nitzschia maleinterpretaria 188.00 15.44 # 15.753 R base Acrocubus octopylus 199.32 15.753 199.315 # 15.780 D top Crucidenticula kanayae 192.00 15.78 # 15.960 D top Thalassiosira fraga 193.70 15.96 193.7 # 16.150 D base Cestodiscus peplum 198.50 16.15 198.5 # 16.490 D top Raphidodiscus marylandicus 199.70 16.49 199.7 # 16.630 D base Crucidenticula kanayae 218.00 16.63 # 16.771 R base Lithopera renzae 199.32 16.771 199.315 # 17.430 D bottom Crucidenticula nicobarica 227.50 17.43 227.5 # 17.490 R base Calocycletta costata 216.08 17.49 216.08 # 17.540 F top Catapsydrax dissimilis 227.75 17.54 227.75 # 17.710 N base Sphenolithus heteromorphus 227.75 17.71 227.75 # 17.724 R base Liriospyris stauropora 232.73 17.724 232.73 # 17.724 R base Dorcadospyris dentata 216.08 17.724 216.08 # 17.950 N top Sphenolithus belemnos 218.25 17.95 218.25 # 18.180 D top Craspdeodiscus elegans 238.50 18.18 238.5 # 18.280 N top Triquertrorhabdulus carinatus 218.25 18.28 218.25 # 18.547 R top Dorcadospyris ateuchus 232.73 18.547 232.73 # 18.567 R base Stichocorys wolffii 232.73 18.567 232.73 # 19.030 N base Sphenolithus belemnos 237.25 19.03 237.25 # 19.090 F top Globiquadrina binaiensis 254.62 19.09 254.62 # 19.210 D base Thalassiosira fraga 264.00 19.21 # 19.210 D top Bogorovia veniamini 263.00 19.210 263 # 19.766 R base Didymocyrtis violina 279.35 19.766 279.35 # 19.992 R base Didymocyrtis tubaria 279.35 19.992 279.35 # 20.300 D base Actinocyclus radionovae 294.00 20.30 294 # 20.677 R base Stichocorys delmontensis 280.00 20.677 280 # 20.889 R top Lophocyrtis (Cyclampterium) pegetrum 318.16 20.889 318.16 # 21.100 F top Paragloborotalia kugleri 288.00 21.10 # 21.384 R top Theocyrtis annosa 292.00 21.384 292 # 21.391 R base Calocycletta virginis 311.67 21.391 311.665 # 22.260 R base Cyrtocapsella cornuta 326.15 22.26 326.15 # 22.347 R base Cyrtocapsella tetrapera 326.15 22.347 326.15 # 22.400 F base Globoquadrina dehiscens 321.00 22.40 # 22.619 R top Artophormis gracilis 333.89 22.619 333.885 # 23.000 F base Paragloborotalia kugleri 353.00 23.00 # 24.400 N top Sphenolithus ciperoensis 360.75 24.40 360.75 # 25.051 R base Lychnocanoma elongata 363.33 25.051 363.325 # 25.266 R base Calocycletta robusta 363.33 25.266 363.325 # 25.330 D base Rocella gelida 356.00 25.33 356 # 26.800 N top Sphenolithus distentus 389.25 26.80 389.25 # 27.100 N base Sphenolithus ciperoensis 389.25 27.10 389.25 # 27.685 R top Lithocyclia angusta 420.50 27.685 420.5 # 29.534 R top Lophocyrtis (Cyclampterium) milowi 440.50 29.534 440.5 # 30.130 R top Theocyrtis tuberosa 455.00 30.13 455 # # # 1- Depths (mbsf) were compiled from data published in the DSDP Leg 85 Volume (http://www.deepseadrilling.org/85/dsdp_toc.htm) # "2- Diatom zone depths were referenced from J. A. Barron, Init. Drilling Reports, DSDP Leg 85, Table 3, Figures 8, 9, 10, 12, and 13; and J. Baldauf, Init. Drilling Reports, DSDP Leg 85. " # "3- Radiolarian zone depths were referenced from C. A. Nigrini, Init. Drilling Reports, DSDP Leg 85, Table 3 and J. A. Barron, Init. Drilling Reports, DSDP Leg 85, Table 2, Figures 8, 9, 10, 12, and 13" # "4- Calcareous Nannofossil zones were referenced from S. Gartner et al., and A. Pujos, Init. Drilling Report, DSDP Leg 85, Table 6" # "5- Planktonic Foraminifera zones were referenced from Bridget Wade (personal correspondence) and T. Saito, Init. Drilling Reports, DSDP Leg 85, Table 5" # "6- Magnetostatigraphy zones were referenced from N. Weinreich and F. Theyer, Init. Drilling Reports, DSDP Leg 85, Table 3" # # # #---------------- # 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 Millions of calendar years Before Present, , , calendar Ma BP, , , mean, ,N ## age_calmaBPtop age Millions of calendar years Before Present, , , calendar Ma BP, , , top of sample, ,N ## age_calmaBPbot age Millions of calendar years Before Present, , , calendar Ma BP, , , bottom of sample, ,N ## notes1 Site 574 Sample Interval Hole-Core-Section-Depth [cm], , , , , , , ,C ## notes2 Site 574 Sample Interval Hole-Core-Section-Depth [cm], , , , , , , ,C ## notes3 Site 574 Sample Interval Hole-Core-Section-Depth [cm], , , , , , , ,C ## depth_top_m Depth top of sample interval, , , m, , , , ,N ## depth_bot_m Depth bottom of sample interval, , , m, , , , ,N ## paleo-lat Paleo Latitude degrees N, , , deg, , , , ,N ## paleo-long Paleo Longitude degrees W, , , deg, , , , ,N ## sedrate Sedimentation rate, , , cm/kyr, , , , ,N ## bulkflux Bulk mass accumulation rate, , , g/cm^2/kyr, , , , ,N ## corg% Organic Carbon, , , weight percent, , , , ,N ## corgflux Organic carbon mass accumulation rate, , , g/cm^2/kyr, , , , ,N ## carb-w% Calcium carbonate, , , weight percent, , , , ,N ## carbflux Calcium carbonate mass accumulation rate, , , g/cm^2/kyr, , , , ,N %bio-si Biogenic Silica percent, , , percent, , , , ,N ## biosi_mar Biogenic silica mass accumulation rate, , , g/cm^2/kyr, , , , ,N ## ba ug/g Barium, , , ug/g, , , , ,N ## baflux Barium mass accumulation rate, , , mg/cm2/kyr, , , , ,N ## th ng/g Thorium, , , ng/g, , , , ,N ## thflux Thorium mass accumulation rate, , , ng/cm^2/kyr, , , , ,N ## u ng/g Uranium, , , ng/g, , , , ,N ## uflux Uranium mass accumulation rate, , , ng/cm^2/kyr, , , , ,N #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Table 2: Site 574 Mass Accumulation Rate Summary # Missing values: ** Data for the interval is not reliable or missing # Missing Value -999 age_calmaBP age_calmaBPtop age_calmaBPbot notes1 notes2 notes3 depth_top_m depth_bot_m paleo-lat paleo-long sedrate bulkflux corg% corgflux carb-w% carbflux %bio-si biosi_mar ba ug/g baflux th ng/g thflux u ng/g uflux 12.5 12.25 12.75 A-16-1-90 to A-17-1-94 118.90 128.73 0.76 123.37 1.97 2.07 0.06 0.00132 90.2 1.87 3.38 0.07 959 1.98 41.12 85.02 125.20 258.83 13.0 12.75 13.25 A-17-1-93 to A-18-5-141 128.73 139.20 0.64 123.01 2.08 2.14 0.07 0.00149 85.2 1.83 5.90 0.12 2592 5.55 165.48 354.21 110.63 236.82 13.5 13.25 13.75 A-18-5-140 to A-19-6-91 139.20 149.80 0.53 122.67 2.13 2.12 0.07 0.00140 85.8 1.82 5.35 0.11 1605 3.41 80.80 171.47 217.91 462.47 14.0 13.75 14.25 A-19-6-90 to A-21-1-41 149.80 160.30 0.43 122.34 2.10 2.22 0.05 0.00116 85.8 1.91 4.51 0.10 3022 6.70 162.18 359.56 121.32 268.97 14.5 14.25 14.75 A-21-1-40 to A-22-2-41 160.30 170.40 0.33 122.01 2.04 2.30 0.04 0.00097 87.5 2.01 4.09 0.09 2300 5.29 61.46 141.39 211.56 486.72 15.0 14.75 15.25 A-22-2-90 to A-23-2-91 170.40 180.30 0.22 121.61 1.95 2.12 0.04 0.00093 86.4 1.84 4.61 0.09 2873 6.09 67.24 142.57 231.61 491.11 15.5 15.25 15.75 A-23-2-90 to C-1-1-41 180.30 189.70 0.07 121.13 1.89 1.93 0.05 0.00101 78.6 1.52 8.70 0.17 3318 6.40 144.67 278.91 144.24 278.08 16.1 15.75 16.25 C-1-1-40 to C-1-3-141 189.70 198.80 0.04 120.84 1.82 1.75 0.05 0.00088 83.5 1.46 5.86 0.10 1785 3.13 101.04 176.91 114.63 200.71 16.5 16.25 16.75 C-1-3-140 to C-2-3-91 198.80 207.90 -0.06 120.60 1.80 1.59 0.05 0.00078 72.9 1.18 9.49 0.14 5425 8.65 200.62 319.78 106.37 169.55 17.0 16.75 17.25 C-2-3-90 to C-3-3-37 207.90 216.86 -0.15 120.38 1.80 1.59 0.06 0.00086 74.5 1.20 10.67 0.16 4243 6.74 163.89 260.47 108.19 171.95 17.5 17.25 17.75 C-2-3-36 to C-4-2-139 216.86 226.00 -0.28 119.96 1.84 1.88 0.06 0.00106 81.7 1.55 6.45 0.12 3270 6.15 74.13 139.33 100.25 188.43 18.1 17.75 18.25 C-4-2-138 to C-5-2-141 226.00 235.40 -0.38 119.61 1.92 2.11 0.05 0.00103 85.9 1.81 4.10 0.09 3587 7.56 30.67 64.66 201.61 425.01 18.5 18.25 18.75 C-5-2-140 to C-6-3-40 235.40 245.50 -0.52 119.11 2.01 2.48 0.05 0.00121 89.3 2.22 2.57 0.06 1956 4.86 10.79 26.79 282.04 700.02 19.0 18.75 19.25 C-6-3-39 to C-7-4-41 245.50 256.30 -0.66 118.62 2.16 2.48 0.05 0.00123 88.6 2.20 4.15 0.10 1522 3.78 33.05 82.10 174.59 433.77 19.5 19.25 19.75 C-7-4-40 to C-9-1-41 256.30 267.80 -0.80 118.10 2.32 2.61 0.05 0.00119 88.5 2.31 4.03 0.11 1903 4.97 58.81 153.69 169.26 442.31 20.0 19.75 20.25 C-9-1-40 to C-10-1-91 267.80 280.20 -0.94 117.61 2.46 2.77 0.04 0.00123 86.7 2.40 4.36 0.12 2869 7.95 64.38 178.47 198.11 549.18 20.5 20.25 20.75 C-10-1-90 to C-11-2-141 280.20 292.50 -1.07 117.17 2.49 2.94 0.04 0.00130 86.2 2.54 4.66 0.14 2537 7.47 29.65 87.27 160.61 472.80 21.1 20.75 21.25 C-11-3-40 to C-12-4-91 292.50 304.40 -1.19 116.71 2.32 2.88 0.04 0.00111 89.2 2.57 3.41 0.10 1452 4.18 11.95 34.41 91.89 264.65 21.5 21.25 21.75 C-12-4-90 to C-13-5-36 304.40 314.85 -1.27 116.43 2.10 2.71 0.04 0.00117 91.7 2.49 2.51 0.07 1333 3.62 27.05 73.39 ** ** 22.0 21.75 22.25 C-13-5-35 to C-14-3-36 314.85 324.20 -1.34 116.17 1.84 2.21 0.05 0.00121 87.9 1.95 4.37 0.09 2743 6.06 ** ** ** ** 22.6 22.25 22.75 C-15-1-40 to C-15-4-41 324.20 332.40 -1.41 115.91 1.61 1.98 0.05 0.00089 90.7 1.80 2.49 0.05 2147 4.26 34.69 68.82 133.82 265.51 23.0 22.75 23.25 C-15-4-40 to C-16-2-138 332.40 339.87 -1.47 115.68 1.48 1.73 0.04 0.00074 90.0 1.56 2.84 0.05 2258 3.91 55.21 95.72 114.11 197.84 23.4 23.25 23.75 C-16-2-137 to C-17-1-41 339.87 346.70 -1.52 115.52 1.39 1.66 0.04 0.00066 84.5 1.40 5.33 0.09 3937 6.52 84.47 139.94 88.64 146.84 24.0 23.75 24.25 C-17-1-40 to C-17-5-91 346.70 353.10 -1.58 115.26 1.28 1.62 0.04 0.00062 87.1 1.41 3.77 0.06 3164 5.12 48.70 78.80 77.83 125.93