# Brooks Range, Alaska 13,000 Year Alkenone and Leaf Wax d2H Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/20205 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/cascade2016d2h.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology # # Parameter_Keywords: geochemistry, hydrogen isotopes #-------------------- # Contribution_Date # Date: 2016-05-23 #-------------------- # Title # Study_Name: Brooks Range, Alaska 13,000 Year Alkenone and Leaf Wax d2H Data #-------------------- # Investigators # Investigators: D'Andrea, W.J.; Kaufman, D.; Briner, J. #-------------------- # Description_and_Notes # Description: Sediment biomarker (Uk'37) and leaf wax hydrogen isotope (d2H) data from two lakes in the Brooks Range, Arctic Alaska. # Data are interpreted for centennial- to millennial-scale trends in glacier extent and lake sedimentation in the Brooks Range. # Analytical precision of the d2H measurements is ~2 per mil. # Provided keywords: hydrogen isotope, n-alkanes, leaf wax #-------------------- # Publication # Authors: # Published_Date_or_Year: # Published_Title: # Journal_Name: # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: ARC 11-07885 #------------------ # Site_Information # Site_Name: Cascade Lake # Location: North America>United States Of America>Alaska # Country: United States Of America # Northernmost_Latitude: 68.3755 # Southernmost_Latitude: 68.3755 # Easternmost_Longitude: -154.596 # Westernmost_Longitude: -154.596 # Elevation: 920 m #------------------ # Data_Collection # Collection_Name: Cascade2016d2H # Earliest_Year: 12690 # Most_Recent_Year: -60 # Time_Unit: 14C years BP # Core_Length: 1.25 m # Notes: #------------------ # Chronology_Information # Chronology: # UCIAMS # Sample name mg C Fraction Modern +/- D14C (permil) +/- 14C age (BP) +/- depth below lake floor (cm) Mass (mg) Material # 134422 13-CAS-4A-1-19.0 0.17 0.8029 0.0016 -197.1 1.6 1765 20 6.0 8.6 Chitin, twigs, leaves, bryophyte, eggs # 131742 13-CAS-4A-1-44 0.13 0.7035 0.0022 -296.5 2.2 2825 25 31 4.1 insect remains, moss frags, resting eggs, fine unidentified pieces # 128095 13-CAS-4A-1-99.25 0.031 0.5960 0.0084 -404.0 8.4 4160 120 86 2.3 Chitin, twigs, leaves, bryophyte, eggs # 131743 13-CAS-4A-2-33.5 0.5310 0.0013 -469.0 1.3 5085 20 139.5 21.8 insect remains, moss frags, resting eggs, fine unidentified pieces # 131744 13-CAS-4A-2-92.5 0.4461 0.0011 -553.9 1.1 6485 25 198.5 13.8 insect remains, moss frags, resting eggs, fine unidentified pieces # 134423 13-CAS-4A-2-129.0 0.3573 0.0013 -642.7 1.3 8270 35 235 10.3 Chitin, twigs, leaves, eggs # 128096 13-CAS-4A-2-141 0.019 0.1934 0.0107 -806.6 10.7 13200 450 247 1.7 Chitin, aquatic vegetation, twigs # 131745 13-CAS-4A-3-35 0.2925 0.0011 -707.5 1.1 9875 35 301 23.0 insect remains, moss frags, resting eggs, fine unidentified pieces # 137726 13-CAS-4A-3-80-82.5 0.06 0.2061 0.0036 -793.9 3.6 12690 150 347 2.1 insect frags, twig, leaf frag # # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # 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) # ## depth_cm depth, , , cm, , , depth delow lake floor, ,N ## d2HleafwaxC27 d2H, n-heptacosane,,per mil VSMOW,,,,,N ## d2HleafwaxC29 d2H, n-nonacosane,,per mil VSMOW,,,,,N ## d2HleafwaxC31 d2H, n-hentriacontane,,per mil VSMOW,,,,,N ## d2HleafwaxC33 d2H, n-tritriacontane,,per mil VSMOW,,,,,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_cm d2HleafwaxC27 d2HleafwaxC29 d2HleafwaxC31 d2HleafwaxC33 3 -257.7 -250.6 -257.7 -209.6 18 -256.1 -240.7 -253.3 -246.3 34 -256.2 -251.3 -257.7 -232.5 48 -258.8 -253.5 -259.9 -239.5 63 -261.1 -249.5 -260.1 -234.1 78 -258.9 -255.3 -265.4 -255.8 93 -263.1 -258.5 -264.5 -232.9 112 -260.5 -256.9 -259.4 -236.7 127 -257.8 -252.4 -260.2 -245.3 147 -258.5 -251.5 -258.2 -233.4 157 -257.2 -253.8 -262.3 -238.4 172 -259.8 -254.8 -265.2 -251.4 187 -251.5 -249.8 -259.8 -240.7 217 -248.2 -248.4 -256.6 -228.5 232 -250.3 -247.9 -256.1 -238.1 257 -251.3 -251.6 -259.1 -244.5 271 -251.2 -253.8 -258.9 -245.5 285 -233.5 -246.2 -247.5 -216.1 300 -243.7 -250.0 -253.1 -232.5 316 -211.0 -221.7 -227.6 -187.2 331 -222.5 -238.3 -243.0 -204.9 346 -228.5 -239.9 -246.0 -218.5 360 -218.5 -242.1 -249.7 -227.1 375 -205.2 -234.8 -235.7 -185.0 391 -183.1 -204.7 -218.9 -167.6