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Sánchez-Montes, Maria Luisa; McClymont, Erin L; Lloyd, Jeremy M; Müller, Juliane; Cowan, Ellen A; Zorzi, Coralie (2019): Alkenone sea surface temperatures, ice rafted debris, terrestrial/aquatic n-alkane ratio, pollen counts and a new age and depth models from IODP Expedition 341 Site U1417, Gulf of Alaska. PANGAEA, https://doi.org/10.1594/PANGAEA.899064, Supplement to: Sánchez-Montes, ML et al. (2020): Late Pliocene Cordilleran Ice Sheet development with warm northeast Pacific sea surface temperatures. Climate of the Past, 16(1), 299-313, https://doi.org/10.5194/cp-16-299-2020

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Abstract:
We present a new multiproxy data set obtained from IODP core site U1417 (56.9598N, -147.109W, water depth -4187.5m) in the Gulf of Alaska. The sediments were collected during IODP Expedition 341 (Jaeger et al., 2014) and were analysed to reconstruct sea surface conditions by means of alkenone and IRD data covering the time interval from 4 to 1.5 Ma years ago. Terrestrial organic matter input to Site U1417 is assessed through the abundance of long-chain n-alkanes (TAR) and palynological analysis. We include a new age and depth model for Site U1417.
Keyword(s):
age model; alkenones; depth model; IRD; Pollen; SST; TAR; UK37; UK37'
Related to:
Sánchez-Montes, Maria Luisa (2018): Climate-ice sheet-ocean interactions in the Gulf of Alaska through the Pliocene and Pleistocene. Doctoral thesis, Durham University
Coverage:
Median Latitude: 56.959820 * Median Longitude: -147.109785 * South-bound Latitude: 56.959810 * West-bound Longitude: -147.109960 * North-bound Latitude: 56.959830 * East-bound Longitude: -147.109610
Date/Time Start: 2013-06-09T00:00:00 * Date/Time End: 2013-06-13T00:00:00
Minimum DEPTH, sediment/rock: 212.201 m * Maximum DEPTH, sediment/rock: 417.340 m
Event(s):
341-U1417C * Latitude: 56.959810 * Longitude: -147.109610 * Date/Time: 2013-06-09T00:00:00 * Elevation: -4188.1 m * Location: Southern Alaska Margin * Campaign: Exp341 (Southern Alaska Margin: Tectonics, Climate and Sedimentation) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 225 m cored; 96.4 % recoverd, 226 m penetrated
341-U1417D * Latitude: 56.959830 * Longitude: -147.109960 * Date/Time: 2013-06-13T00:00:00 * Elevation: -4187.0 m * Location: Southern Alaska Margin * Campaign: Exp341 (Southern Alaska Margin: Tectonics, Climate and Sedimentation) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 64 cores; 466.5 m cored; 65.3 % recoverd, 470.3 m penetrated
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventSánchez-Montes, Maria Luisa
2Sample code/labelSample labelSánchez-Montes, Maria LuisaSome sample IDs detail the chronozone interpretations of Jaeger et al., 2014 and Sánchez-Montes et al., 2019
3Sample code/label 2Sample label 2Sánchez-Montes, Maria LuisaIODP Sample ID
4DEPTH, sediment/rockDepthmSánchez-Montes, Maria Luisaafter Jaeger et al. (2014)Geocode – Shipboard mid-point CCSF-A
5Depth, errorDepth, e±Sánchez-Montes, Maria Luisaafter Jaeger et al. (2014)Error in Shipboard mid-point CCSF-A depth (m)
6AGEAgeka BPSánchez-Montes, Maria Luisaafter Jaeger et al. (2014)Geocode – Shipboard age
7Sedimentation rateSed ratecm/kaSánchez-Montes, Maria LuisaCalculatedAverage sedimentation rates calculated from the shipboard age/depth model in Jaeger et al., 2014.
8DEPTH, sediment/rockDepthmSánchez-Montes, Maria Luisaafter Sánchez-Montes et al. (2019)Geocode – New depth model
9AGEAgeka BPSánchez-Montes, Maria Luisaafter Sánchez-Montes et al. (2019)Geocode – New age model
10Sedimentation rateSed ratecm/kaSánchez-Montes, Maria Luisaafter Sánchez-Montes et al. (2019)Average
11Alkenone, unsaturation index UK37UK37Sánchez-Montes, Maria Luisa
12Alkenone, unsaturation index UK'37UK'37Sánchez-Montes, Maria Luisa
13Sea surface temperatureSST°CSánchez-Montes, Maria LuisaCalculated from UK'37 (Müller et al, 1998)
14Sea surface temperatureSST°CSánchez-Montes, Maria LuisaCalculated from UK37 (Prahl et al., 1988)
15Alkenone, C37:4C37:4%Sánchez-Montes, Maria Luisa
16Accumulation rate, ice rafted debrisAcc rate IRDg/cm2/kaCowan, Ellen AIRD MAR according to the shipboard age model
17Terrigenous/aquatic ratioTARSánchez-Montes, Maria Luisa
18Carbon Preference IndexCPISánchez-Montes, Maria Luisa
19Pollen per unit sediment volumePollen/sed#/cm3Zorzie, Coralie
Size:
1422 data points

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