Domack Eugene W edomack@hamilton.edu Jull A J Timothy 0000-0002-4079-4947 Donahue Douglas J 1991 Age determination and sedimentation rates of ODP Hole 119-740A (Table 1) dataset https://doi.org/10.1594/PANGAEA.758213 Domack Eugene W edomack@hamilton.edu Jull A J Timothy 0000-0002-4079-4947 Donahue Douglas J 1991 Holocene chronology for the unconsolidated sediments at Hole 740A: Prydz Bay, East Antarctica book chapter In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program) 119 https://doi.org/10.2973/odp.proc.sr.119.207.1991 747-751 Unconsolidated sediments recovered at Site 740 include approximately 23 m of interbedded siliceous ooze and silty clay (pebbly mud), which was tentatively assigned a late Pliocene to Quaternary age by shipboard scientists. In order to clarify the chronology of this sequence, six samples of siliceous ooze were analyzed for their 14C content using the University of Arizona Tandem Accelerator Mass-Spectrometer (TAMS) facility. Uncorrected ages ranged from 1915 ± 50 yr B.P. (0.21 mbsf) to 11,140 ± 75 yr B.P. (15.80 mbsf). These ages provide estimates for interval sedimentation rates of the siliceous ooze, which varied from 0.150 to 0.067 cm/yr. A reservoir correction of 1750 yr is used to determine absolute ages for the sample intervals. These dates ranged from 165 to 9390 14C yr B.P. Overall sediment-accumulation rates vary from 0.144 to 0.187 cm/yr, with maximum rates associated with the pebbly muds rather than the siliceous oozes. Extrapolated sedimentation rates and reservoir corrections allow for an age estimate of about 10,700 yr B.P. for the initiation of open-marine conditions at Site 740. Resumption of terrigenous sedimentation, with increased ice rafting, took place from approximately 7300 to 3800 yr B.P. This may have been related to the readvance of floating ice tongues along the eastern side of Prydz Bay. Open-marine conditions with seasonal sea ice have apparently been in existence near Site 740 for approximately the last 3800 yr. 76.6819 76.6819 -68.764 -68.764 76.6819 -68.764 1988-01-23T18:30:00 1988-01-27T13:15:00 0.235 15.82 ODP Ocean Drilling Program https://www-odp.tamu.edu:443/ Ocean Drilling Program, Texas A&M University ODP http://www-odp.tamu.edu/ https://ror.org/01f5ytq51 119-740A -68.764 76.6819 -818.0 1988-01-23T18:30:00 1988-01-27T13:15:00 225.5 m 72.19 m Prydz Bay Leg119 https://doi.org/10.2973/odp.proc.ir.119.1989 Barron, John A Larsen, Birger 1987-12-14 1988-02-20 Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Drilling/drill rig DRILL 31 core; 225.5 m cored; 0 m drilled; 32 % recovery 45 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Sample 119-740A-7R-2,3-7: because of incomplete core recovery this sample may be as high as 0.89-0.93 mbsf. Sample code/label Sample label DSDP/ODP/IODP sample designation hdl:10013/epic.27914.d001 Domack Eugene W edomack@hamilton.edu Sample label DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Depth sed [m] Depth, top/min Depth top m depth http://purl.obolibrary.org/obo/PATO_0001595 Length L http://dbpedia.org/resource/Length Domack Eugene W edomack@hamilton.edu Depth top [m] Depth, bottom/max Depth bot m depth http://purl.obolibrary.org/obo/PATO_0001595 maximal max Length L http://dbpedia.org/resource/Length Domack Eugene W edomack@hamilton.edu Depth bot [m] Age, dated Age dated ka age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Age, 14C AMS https://doi.org/10.1146/annurev.ns.30.120180.002253 accelerator mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB17/ Chromatographs & spectrometers Domack Eugene W edomack@hamilton.edu Age dated [ka] Chaetoceros cinctus C. cinctus % Chaetoceros cinctus https://www.marinespecies.org/aphia.php?p=taxdetails&id=149622 Dimensionless Ratio ψ Age, 14C AMS https://doi.org/10.1146/annurev.ns.30.120180.002253 accelerator mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB17/ Chromatographs & spectrometers Domack Eugene W edomack@hamilton.edu C. cinctus [%] Sedimentation rate per year SR cm/a sedimentation rate year Linear Velocity http://dbpedia.org/resource/Velocity Calculated Domack Eugene W edomack@hamilton.edu interval sedimentation rate SR [cm/a] Flow rate Flow rate cm/a flow rate http://purl.obolibrary.org/obo/PATO_0001574 Linear Velocity http://dbpedia.org/resource/Velocity Calculated Domack Eugene W edomack@hamilton.edu accumulation rate Flow rate [cm/a] Sample code/label 2 Sample label 2 Domack Eugene W edomack@hamilton.edu Sample label 2 supplement citable author10196 author10512 author23136 basis5 campaign91 event13519 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst34 license101 method10974 method50 method5059 method58 param3 param4 param5506 param55133 param6465 param790 param8552 param94864 pi10196 project3 ref33802 term1049466 term1073131 term1073135 term1074818 term20881 term2299417 term38263 term38561 term41056 term41076 term43398 term43794 term43863 term43876 term43975 term68027