# Lake DV09, Devon Island 7,500 Year Physical Properties Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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: http://ncdc.noaa.gov/paleo/study/18575 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/devon/dv09t2013loi.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology #-------------------- # Contribution_Date # Date: 2015-03-20 #-------------------- # Title # Study_Name: Lake DV09, Devon Island 7,500 Year Physical Properties Data #-------------------- # Investigators # Investigators: Courtney Mustaphi, C.J.; Gajewski, K. #-------------------- # Description_and_Notes # Description: Multiproxy data from 2 sediment cores collected in Lake DV09, Devon Island, Nunavut, Canada, as presented # in Courtney Mustaphi and Gajewski (2013) Figures 2, 4, 5, and 6. Measured parameters include varve thickness, magnetic # susceptibility, clay/sand/silt, loss-on-ignition, and sediment greyscale. Lake DV09 has a surface area of 3ha, # 16m maximum depth, pH of 8.4, and is located 1.3 km from the coast. Bedrock is Middle Ordovician Bay Fiord Formation, # soils are Cryic regosols, and vegetation is Northern Arctic tundra. # # Additional References: # Courtney Mustaphi, C.J. 2008. Analysis of laminated sediments from Lake DV09, Northern Devon Island, Nunavut, Canada. # MSc thesis, Department of Geography, University of Ottawa, Ottawa, Ontario, Canada. 122p. # # Gajewski, K., P. Hamilton and R. McNeely. 1997. A high-resolution proxy-climate record from an arctic lake with # annually-laminated sediments on Devon Island, Nunavut, Canada. Journal of paleolimnology 17:215-225. # # Turner, L.J. 1995. 210Pb dating of lacustrine sediments from a Devon Island lake (Core 069, Station DV09), NWT. # National Water Research Institute, Burlington, Ontario. NWRI Contribution 95-103, January, 1995. 23p. # #-------------------- # Publication # Authors: Colin J. Courtney Mustaphi and Konrad Gajewski # Published_Date_or_Year: 2013-05-01 # Published_Title: Holocene sediments from a coastal lake on northern Devon Island, Nunavut, Canada # Journal_Name: Canadian Journal of Earth Sciences # Volume: 50 # Edition: # Issue: 5 # Pages: 564-575 # DOI: 10.1139/cjes-2012-0143 # Online_Resource: http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2012-0143#.VRCR32NTcsc # Full_Citation: # Abstract: Sediment cores from Lake DV09, northern Devon Island, Nunavut, Canada (75 34'34"N, 89 18'55"W), were studied to reconstruct the lake ontogeny through analysis and interpretation of the sediment stratigraphy. The lake was uplifted from marine inundation ~7600 cal BP. After a millennium of rapid sediment accumulation, which coincided with the Holocene Thermal Maximum in the region, accumulation rates decreased over the past 6000 years as the Arctic became colder. This resulted in the deposition of very fine laminae that were interpreted as varves. The uppermost laminated sediments provided a ~1600 year history of annual sediment transport and deposition into the lake. During periods of warmer temperatures, such as between 6000 and 7500 cal BP and during the Medieval Climate Anomaly (~950-1300 CE; CE, Christian Era), hydroclimatic and permafrost slope processes increased sedimentation rates into the basin. #------------------ # Funding_Agency # Funding_Agency_Name: Natural Sciences and Engineering Research Council of Canada (NSERC) # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Canadian Foundation for Climate and Atmospheric Sciences (CFCAS) # Grant: #------------------ # Site_Information # Site_Name: Lake DV09 # Location: North America>Canada>Nunavut # Country: Canada # Northernmost_Latitude: 75.5761 # Southernmost_Latitude: 75.5761 # Easternmost_Longitude: -89.3153 # Westernmost_Longitude: -89.3153 # Elevation: 35 m #------------------ # Data_Collection # Collection_Name: DV09T2013LOI # Earliest_Year: 7500 # Most_Recent_Year: 50 # Time_Unit: Cal. Year BP # Core_Length: m # Notes: #------------------ # Chronology: # # Table 1. Radiocarbon dates. # # Source Material Depth minimum (cm) Depth maximum (cm) Sample code 14C age (BP) 13C/12C (permil) 2 sigma Calibrated age (cal BP) # Core T, B Organic detritus 89 90 Beta-242790 4600±40 -23.9 5070-5470*a # Core T Organic detritus 303 306 Beta-240752 5870±40 -25.2 6570-6790 # Core T Organic detritus 329 332.5 Beta-236401 5860±40 -29.8 6560-6780*a # Core T Organic detritus 353 355 Beta-235291 5910±40 -28.5 6640-6850 # Core T Organic detritus 394 398 Beta-236402 6180±50 -26.2 6950-7240 # Core T Organic detritus 478 481 Beta-235292 6500±40 -25.4 7320-7480 # Lakeshore Mya truncate valve - - TO-7929 7160±80 NA 7480-7800*b # # Note: Dates, presented in calibrated years before present (cal BP), calibrated using IntCal09 calibration curves. NA, not available. # *a Samples not used in discussion because they were too old or represented age reversals. # *b Date calibrated using Marine09 (Reimer et al. 2009). # # # Figure 4B (inset) Varve Discrepant Years/100 Years # # Year (Varve Year CE) Year (Varve Year BP) Cumulative Varve Depth (cm) Avg Negative discrepant years Avg Positive discrepant years Cumulative Negative Discrepant Years Cumulative Positive Discrepant Years # 1900 50 9.6311 -8.5 5 8.5 5 # 1800 150 16.1675 -7.5 5.5 16 10.5 # 1700 250 22.8022 -0.5 4 16.5 14.5 # 1600 350 26.9119 -0.5 12 17 26.5 # 1500 450 39.0797 -4 6.5 21 33 # 1400 550 45.6672 -6 6 27 39 # 1300 650 52.4073 -11 4.5 38 43.5 # 1200 750 73.0242 -3 0.5 41 44 # 1100 850 87.9634 0 0 41 44 # 1000 950 103.0078 -0.666666667 0.333333333 41.66666667 44.33333333 # 900 1050 108.0554 -3 5.333333333 44.66666667 49.66666667 # 800 1150 110.9123 -6 3 50.66666667 52.66666667 # 700 1250 114.6923 -2.666666667 2.333333333 53.33333333 55 # 600 1350 120.679 -4 0.666666667 57.33333333 55.66666667 # 500 1450 127.0203 -8.333333333 2.666666667 65.66666667 58.33333333 # 400 1550 132.714 -11.66666667 15.33333333 77.33333333 73.66666667 # 370 1580 136.4619 -1.666666667 3.666666667 79 77.33333333 # #---------------- # Variables # # Data variables follow that 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, , , , ,N ## org% Organic Content, , , %, , paleolimnology, , LOI,N ## carb% Calcium Carbonate, , , %, , paleolimnology, , LOI,N ## clastic% Siliciclastic content, , , %, , paleolimnology, , LOI,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_cm org% carb% clastic% 9 1.27388535 1.577924602 97.14819005 21 0.543825976 1.447410743 98.00876328 31 0.845211661 1.451997399 97.70279094 41 1.113480218 1.97252835 96.91399143 69 0.78619634 1.67601683 97.53778683 76 0.975640461 1.627256547 97.39710299 85 0.755920392 1.570961024 97.67311858 98 0.77797056 1.568140794 97.65388865 108 2.748989988 2.853788495 94.39722152 127 0.897005679 1.953506544 97.14948778 154 1.450526679 2.882425092 95.66704823 156 0.81323417 2.880168185 96.30659765 174 1.067364105 3.551014576 95.38162132 182 1.685035067 198 1.707006369 3.188180404 95.10481323 206 2.165660052 3.245436105 94.58890384 215 1.899915182 9.562510808 88.53757401 218 1.672620981 3.080099092 95.24727993 228 0.884119592 2.621544328 96.49433608 230 0.941645474 2.796280877 96.26207365 243 0.425985091 1.699346405 97.8746685 247 0.650121898 1.484930473 97.86494763 249 1.403051445 2.900466563 95.69648199 249 1.272355192 1.658255227 97.06938958 251 0.599569242 1.423049895 97.97738086 256 1.010473521 2.831383652 96.15814283 265 0.665130063 2.101564572 97.23330537 266 1.774800188 2.429101352 95.79609846 271 0.538333024 1.810377006 97.65128997 271 1.9109821 2.996300863 95.09271704 280 0.792945519 1.378074829 97.82897965 284 0.759990194 1.762187088 97.47782272 296 0.562464846 1.432970901 98.00456425 297 0.452856479 1.137291497 98.40985202 298 0.860319779 1.776504298 97.36317592 302 0.405834608 1.045296167 98.54886923 303.5 0.463125806 1.136698274 98.40017592 306 0.698038272 1.811901588 97.49006014 308 0.532178218 1.505536892 97.96228489 310 0.78325049 1.586458175 97.63029134 317 0.521234378 1.184876451 98.29388917 325 0.707710012 1.425508489 97.8667815 335 0.698358246 1.597779149 97.70386261 344 0.771401693 1.63064088 97.59795743 346 0.397305234 1.38166262 98.22103215 362 0.53201361 1.349586417 98.11839997 381 0.642902244 2.079842856 97.2772549 385 1.067867482 394 0.447173861 1.569144158 97.98368198 408 0.767901709 2.250596505 96.98150179 418 0.382897256 19.3058063 80.31129644 420 0.964149919 2.790346908 96.24550317 427 0.452079566 1.895246745 97.65267369 428 0.616080971 1.954582833 97.4293362 442 0.332926423 1.98196192 97.68511166 445 0.51804321 2.970589976 96.51136681 450 0.579763212 2.044073415 97.37616337 452 0.499482244 2.258953168 97.24156459 485 0.504540868 2.040329316 97.45512982 500 0.367709453 2.117874177 97.51441637 509 0.614684121 2.204787539 97.18052834 533 0.416928437 2.231016288 97.35205528 544 0.544024599 2.526904097 96.9290713 559 0.400460804 3.018285966 96.58125323 569 0.506165527 2.77101261 96.72282186 599 0.457397525 2.156111929 97.38649055 614 0.624169219 2.808956092 96.56687469 639 0.51458979 2.662669723 96.82274049