# Navarin Canyon, Bering Sea Diatom, Geochemistry, Grainsize, Nannofossils and Mineralogy Data during Marine Isotope Stages 10 to 12 #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: http://www.ncdc.noaa.gov/paleo/study/20326 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/caissie2016/caissie2016-nannos.txt # # Archive: Paleoceanography # # Parameter_Keywords: population abundance, age control, carbon isotopes, nitrogen isotopes, lithology #--------------------------------------- # Contribution_Date # Date: 2016-07-12 #--------------------------------------- # Title # Study_Name: Navarin Canyon, Bering Sea Diatom, Geochemistry, Grainsize, Nannofossils and Mineralogy Data during Marine Isotope Stages 10 to 12 #--------------------------------------- # Investigators # Investigators: Caissie, B.E.; Brigham-Grette, J.; Cook, M.S.; Colmenero-Hidalgo, E. #--------------------------------------- # Description and Notes # Description: Precision of measurements- d15N: 0.2 per mil; d13C: 0.2 per mil ; TOC: 0.03%; TN 0.002%; %CaCO3: 0.03% ; C/N: 0.3 # Provided Keywords: MIS 11, diatoms, calcareous nannofossils, sea ice, productivity #--------------------------------------- # Publication # Authors: Caissie, B.E., J. Brigham-Grette, M.S. Cook, and E. Colmenero-Hidalgo # Published_Date_or_Year: 2016 # Published_Title: Bering Sea surface water conditions during Marine Isotope Stages 12 to 10 at Navarin Canyon (IODP Site U1345) # Journal_Name: Climate of the Past # Volume: # Issue: # Pages: # Report Number: # DOI: 10.5194/cp-2015-184 # Abstract: Records of past warm periods are essential for understanding interglacial climate system dynamics. Marine Isotope Stage 11, occurred ~410 ka when global ice volume was the lowest, sea level was the highest and terrestrial temperatures were the warmest of the last 500 kyrs. This interval with its extreme character has been considered an analog for the near future. The Bering Sea is ideally situated to record how opening or closing the Pacific-Arctic Ocean gateway (Bering Strait) impacted primary productivity, sea ice, and sediment transport in the past; however, little is known about this region prior to 125 ka. IODP Expedition 323 to the Bering Sea offered the unparalleled opportunity to look in detail at time periods older than had been previously retrieved using gravity and piston cores. Here we present a multi-proxy record for Marine Isotope Stages 12-10 from Site U1345 located near the shelf-slope break. MIS 11 is bracketed by highly productive laminated intervals that may have been triggered by flooding of the Beringian shelf. Low insolation is associated with higher productivity, which was likely driven by increased upwelling. During the majority of MIS 11 however, high stratification appears to have led to lowered productivity in both the northern Atlantic and the northern Pacific. U1345, located near the marginal ice zone, experienced seasonal sea ice throughout both the glacial and interglacial stages. When global eustatic sea level was at its peak, Beringian tidewater glaciers advanced, driven by decreasing insolation, reduced seasonality, and high humidity due to high sea level and ice-free summers. Multiple examples of Pacific-Atlantic teleconnections are presented including laminations deposited at the end of MIS 11 in sync with millennial scale stadial events seen in the North Atlantic. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: 1023537 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Ocean Discovery Program, Post Expedition Award # Grant: #--------------------------------------- # Site Information # Site_Name: IODP U1345 # Location: Bering Sea # Country: USA # Northernmost_Latitude: 60.1533 # Southernmost_Latitude: 60.1533 # Easternmost_Longitude: -179.47 # Westernmost_Longitude: -179.47 # Elevation: -1008 #--------------------------------------- # Data_Collection # Collection_Name: IODP U1345 nannos Caissie16 # First_Year: 431000 # Last_Year: 405230 # Time_Unit: cal yr BP # Core_Length: 23.43 # Notes: data from a subsample of the core #--------------------------------------- # Chronology: # Chronology determined using tie points from chemostratigraphy. Oxygen isotopes from benthic foraminifera were compared to the LR04 marine stack. Additionally, magnetic susceptibility was compared to that from a nearby, well-dated core, U!343. Tie points are provided here. # depth Core depth in CCSF-A (mbsf) # age_tie Age as determined by either Cook et al., 2016, Lisiecki, et al., 2005 or Asahi, et al., 2016 # method Either oxygen isotope stratigraphy (d18O) or magnetic susceptibility stratigraphy (MS) # citation Citation for isotope data or correlation # calib_method Calibration method # # depth age_tie method citation calib_method # 98.6 337 d18O Cook et al., 2016 correlation to Lisiecki et al. 2005 # 115.3 374 d18O Cook et al., 2016 correlation to Lisiecki et al. 2005 # 123.2 398.5 MS compared Cook et al., 2016 to Asahi et al., 2016 magnetic susceptibility corrlated between U1345 and U1343 # 130.6 424 d18O Cook et al., 2016 correlation to Lisiecki et al. 2005 # 148.7 478 d18O Cook et al., 2016 correlation to Lisiecki et al. 2005 # # Cook, M. S., Ravelo, A. C., Mix, A., Nesbitt, I. M., and Miller, N. V.: Tracing subarctic Pacific water masses with benthic foraminiferal stable isotopes during the LGM and late Pleistocene, Deep Sea Research Part II: Topical Studies in Oceanography, 125–126, 84-95, 2016. NaN NaN NaN NaN # Asahi, H., Kender, S., Ikehara, M., Sakamoto, T., Takahashi, K., Ravelo, A. C., Alvarez Zarikian, C. A., Khim, B. K., and Leng, M. J.: Orbital-scale benthic foraminiferal oxygen isotope stratigraphy at the northern Bering Sea Slope Site U1343 (IODP Expedition 323) and its Pleistocene paleoceanographic significance, Deep Sea Research Part II: Topical Studies in Oceanography, 125–126, 66-83, 2016. NaN NaN NaN NaN # Lisiecki, L. E. and Raymo, M. E.: A Pliocene-Pleistocene stack of 57 globally distributed benthic delta O-18 records, Paleoceanography, 20, 10.1029/2004PA001071, 2005. NaN NaN NaN NaN # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## depth_mbsf Depth,bulk sediments,,m,,,mbsf,,N ## age_calkaBP age,bulk sediments,,kiloyears BP,,,,,N ## sampleID sample ID,bulk sediments,,none,,Paleoceanography,,,C ## CCSF_top depth top,bulk sediments,,m,,Paleoceanography,mbsf,,N ## CCSF_bottom depth bottom,bulk sediments,,m,,Paleoceanography,mbsf,,N ## Calc_Nannos/g number,calcareous nannofossils,,number per gram of sediment,,Paleoceanography,,analytical technique: counts via light microscopy,N ## small_Gephy number,Gephyrocapsa sp. small,,counted,,Paleoceanography,,analytical technique: counts via light microscopy,N ## med_Gephy number,Gephyrocapsa sp. Medium,,counted,,Paleoceanography,,analytical technique: counts via light microscopy,N ## G_oce number,Gephyrocapsa oceanica,,counted,,Paleoceanography,,analytical technique: counts via light microscopy,N ## C_pel number,Coccolithus pelagicus,,counted,,Paleoceanography,,analytical technique: counts via light microscopy,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -999 depth_mbsf age_AD sampleID CCSF_top CCSF_bottom Calc_Nannos/g small_Gephy med_Gephy G_oce C_pel 125.01 405.23 323-U1345A 13H-4 102-103 cm 125.01 125.02 368166.67 6 0 0 0 125.41 406.61 323-U1345A 13H-4 142-143 cm 125.41 125.42 0 0 0 0 0 125.78 407.89 323-U1345A 13H-5 32-33 cm 125.78 125.79 345156.25 5 0 0 0 126.18 409.27 323-U1345A 13H-5 72-73 cm 126.18 126.19 552250 8 0 0 0 126.58 410.65 323-U1345A 13H-5 112-113 cm 126.58 126.59 1506136.4 13 5 0 6 126.98 412.03 323-U1345A 13H-6 2-3 cm 126.98 126.99 162426.47 2 0 0 0 127.38 413.41 323-U1345A 13H-6 42-43 cm 127.38 127.39 142332.47 1 0 0 1 127.78 414.79 323-U1345A 13H-6 82-83 cm 127.78 127.79 0 0 0 0 0 128.18 416.17 323-U1345A 13H-6 122-123 cm 128.18 128.19 753068.18 8 1 0 0 128.58 417.55 323-U1345A 13H-7 12-13 cm 128.58 128.59 62755.682 1 0 0 0 128.78 418.24 323-U1345A 13H-7 32-33 cm 128.78 128.79 23470625 121 78 2 20 129.18 419.62 323-U1345A 13H-7 72-73 cm 129.18 129.19 0 0 0 0 0 129.58 421.00 323-U1345A 13H-7 112-113 cm 129.58 129.59 0 0 0 0 0 131.12 425.10 323-U1345A 14H-1 32-33 cm 131.12 131.13 0 0 0 0 0 131.35 425.79 323-U1345A 14H-2 6-7 cm 131.35 131.36 131488.1 1 1 0 0 131.71 426.86 323-U1345A 14H-2 42-43 cm 131.71 131.72 65744.048 1 0 0 0 132.28 428.56 323-U1345A 14H-2 99-100 cm 132.28 132.29 0 0 0 0 0 133.41 431.93 323-U1345A 14H-3 66-67 cm 133.41 133.42 368166.67 6 0 0 0