# Illinois River Valley Last Glacial Loess Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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/22693 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/loess/peoria/thomas2017gast.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Loess # # Dataset DOI: # # Parameter_Keywords: #-------------------- # Contribution_Date # Date: 2017-09-28 #-------------------- # File_Last_Modified_Date # Date: 2017-09-28 #-------------------- # Title # Study_Name: Illinois River Valley Last Glacial Loess Data #-------------------- # Investigators # Investigators: Nash, T.A.; Conroy, J.L.; Grimley, D.A.; Guenthner, W.R.; Curry, B.B. #-------------------- # Description_Notes_and_Keywords # Description: Physical properties (grain size and magnetic susceptibility), stable isotope (d13C and d18O), and gastropod assemblage data # from late-glacial (~28-20 kyrbp) loess deposits at 2 locations (New Cottonwood School and Thomas Quarry) in the Illinois River Valley. # Provided Keywords: Peoria silt, radiocarbon, grain size, gastropod, d18O, d13C #-------------------- # Publication # Authors: Thomas A. Nash, Jessica L. Conroy, David A. Grimley, William R. Guenthner, Ben Brandon Curry # Published_Date_or_Year: 2017-09-21 # Published_Title: Episodic deposition of Illinois Valley Peoria silt in association with Lake Michigan Lobe fluctuations during the last glacial maximum # Journal_Name: Quaternary Research # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1017/qua.2017.66 # Online_Resource: https://www.cambridge.org/core/journals/quaternary-research/article/episodic-deposition-of-illinois-valley-peoria-silt-in-association-with-lake-michigan-lobe-fluctuations-during-the-last-glacial-maximum/16D885A9FDFA31CD563E556C352854EE # Full_Citation: # Abstract: The chronology and cause of millennial depositional oscillations within last glacial loess of the Central Lowlands of the United States are uncertain. Here, we present a new age model that indicates the Peoria Silt along the Illinois River Valley accumulated episodically from ~28,500 to 16,000 cal yr BP, as the Lake Michigan Lobe margin fluctuated within northeastern Illinois. The age model indicates accelerated loess deposition coincident with regional glacial advances during the local last glacial maximum. A weakly developed paleosol, the Jules Geosol, represents a period of significantly slower deposition, from 23,700 to 22,000 cal yr BP. A gastropod assemblage-based reconstruction of mean July temperature shows temperatures 6-10C cooler than modern during Peoria Silt deposition. Stable oxygen and carbon isotope values (d18O and d13C) of gastropod carbonate do not vary significantly across the pedostratigraphic boundary of the Jules Geosol, suggesting slower loess accumulation was a result of reduced glacial sediment supply rather than direct climatic factors. However, a decrease in d18O values occurred between 26,000 and 24,000 cal yr BP, synchronous with the Lake Michigan Lobe's southernmost advance. This d18O decrease suggests a coupling of regional summer hydroclimate and ice lobe position during the late glacial period. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: GLD 16-37481 #------------------ # Funding_Agency # Funding_Agency_Name: Prairie Research Institute # Grant: Matching Research Awards Program #------------------ # Site_Information # Site_Name: Thomas Quarry # Location: North America>United States Of America>Illinois # Country: United States Of America # Northernmost_Latitude: 39.5201 # Southernmost_Latitude: 39.5201 # Easternmost_Longitude: -90.5157 # Westernmost_Longitude: -90.5157 # Elevation: 670 m #------------------ # Data_Collection # Collection_Name: TQ2017gast # Earliest_Year: 27730 # Most_Recent_Year: 21619 # Time_Unit: Cal. Year BP # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # Radiocarbon ages (+/-1 sigma error) and calibrated ages (2sigma), rounded to nearest century, from New Cottonwood School (NCS) # and Thomas Quarry (TQ) samples. Depths are in cm below ground surface for NCS samples and cm above Roxana for TQ. # Depths in parentheses for TQ represent depths used in Bacon2.2 age model program, which represent depth above ground surface. # *A3252 was excluded from the age model because of a laboratory error, which exposed sample to open air and resulted in a large error. # A3770 was excluded due to poor shell quality (staining and fragility) and uncertainty in sampling depth # ** Succinea sp. or Anguispira alternata ages (D. Grimley, 1997, unpublished data). # Composite TQ shell depths based on MS correlation with TQA and TQB (Figure S1). # # Lab Number ISGS Number Sample name Depth//Height (cm) d13C Material Fraction Modern Carbon 14C yr cal yr BP # UCI 147631 A3243 NCSB-12.4ft 380 -5.4 Succinea sp. gastropod shell 0.0862±0.0013 19690±130 23700±300 # UCI 147632 A3244 NCSB-11.4ft 350 -6.1 Succinea sp. gastropod shell 0.0834±0.0013 19960±130 24000±300 # A3245 CSC-19ft 500 Succinea sp. gastropod shell 0.0774±0.0013 20550±140 24800±400 # UCI 147635 A3247 NCSA-7.7ft 230 -8.7 Webbhelix multilineata gastropod shell 0.1106±0.0013 17690±100 21400±300 # UCI 147636 A3248 NCSA-9.4ft 290 -6.8 Succinea sp. gastropod shell 0.1050±0.0013 18100±100 21900±300 # UCI 153738 A3366 NCSA-9.5 ft 290 -5.4 Succinea sp. gastropod shell 0.1054±0.0009 18070±80 21900±300 # UCI 147637 A3249 NCSB-13.5ft 410 Succinea sp. gastropod shell 0.0833±0.0015 19970±150 24000±400 # UCI 147638 A3250 NCSA-3.9ftW 120 -9 Webbhelix multilineata gastropod shell 0.1217±0.0014 16920±100 20400±300 # UCI 147639 A3251 NCSA-3.9ftS 120 -6.7 Succinea sp. gastropod shell 0.1150±0.0014 17370±100 21000±300 # UCI 147640 A3252 NCSA-4.9ft 150 -5.6 Succinea sp. gastropod shell 0.1272±0.0152 16570±960* # UCI 153736 A3364 NCSA-5.1ft 160 -5.6 Succinea sp. gastropod shell 0.1073±0.0010 17930±80 21700±200 # UCI 147641 A3253 NCSA-6.0ft 180 -7.8 Succinea sp. gastropod shell 0.1088±0.0013 17820±100 21600±300 # UCI 147642 A3254 NCSA-6.7ft 200 -7 Succinea sp. gastropod shell 0.1034±0.0014 18230±110 22100±300 # UCI 153737 A3365 NCSA8- ft 260 -6.1 Succinea sp. gastropod shell 0.1021±0.0010 18330±80 22200±200 # UCI 162224 A3593 TQA 0.8m 370 (260) -6.7 Succinea sp. gastropod shell 0.0775±0.0008 20540±90 24700±400 # UCI 162225 A3594 TQA 2.0m 250 (380) -6.2 Succinea sp. gastropod shell 0.0668±0.0008 21740±100 26000±200 # UCI 162226 A3595 TQA 2.9m 160 (470) -5.2 Succinea sp. gastropod shell 0.0559±0.0008 23170±120 27500±200 # UCI 162227 A3596 TQA 3.6m 90 (540) -6.7 Succinea sp. gastropod shell 0.0550±0.0009 23300±130 27800±200 # UCI 168363 A3708 TQB 0.2m 320 (310) -7.1 Succinea sp. gastropod shell 0.0738±0.0008 20940±90 25300±300 # UCI 168364 A3709 TQB 0.6m 360 (270) -7 Succinea sp. gastropod shell 0.0747±0.0008 20840±90 25200±300 # UCI 168365 A3710 TQB 1.0m 400 (230) -6.8 Succinea sp. gastropod shell 0.0763±0.0008 20670±90 24900±300 # UCI 168366 A3711 TQB 1.45m 440 (185) -6.9 Succinea sp. gastropod shell 0.0845±0.0008 19850±80 23900±200 # UCI 170538 A3769 TQB 1.5-1.75 460 (167) -7.1 Succinea sp. gastropod shell 0.0870±0.0008 19610±80 23600±300 # UCI 170539 A3770 TQB 2.25-2.5 540 (85) -7 Succinea sp. gastropod shell 0.0890±0.0008 19430±80* # CAMS38089 TQ 5.5m 525 (95) -7.1 terrestrial gastropod shell 0.1077±0.0010 17900±80** 21700±200 # CAMS38088 TQ 6.5m 625 (5) -7 terrestrial gastropod shell 0.1179±0.0011 17170±80** 20700±200 # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## depth_cm depth, , , cm, , , , ,N, Height above Roxana Silt ## Succinea Succinea sp., , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## H.occ Hendersonia occulta, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## Z.arb Zonitoides arboreus, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## D.whit Discus whitneyi, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## S.leai Stenotrema leai, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## V.hub Vertigo hubrichti, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## E.fulv Euconulus fulvus, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## P.minut Punctum minutissium, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## A.alt Anguispira alternata, , , , ,loess, number of whole shells, ,N, terrestrial gastropod ## TotGast Total Gastropod shells, , , , ,loess, number of whole shells, ,N, terrestrial gastropod # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_cm Succinea H.occ Z.arb D.whit S.leai V.hub E.fulv P.minut A.alt TotGast 555 6 0 0 13 0 0 0 0 0 19 538 9 0 0 2 0 0 0 0 0 11 513 4 0 0 0 0 0 0 0 0 4 488 0 0 0 1 0 0 0 0 0 1 463 13 0 1 16 0 0 0 0 0 30 438 58 2 0 42 2 0 0 0 0 104 413 32 3 2 95 0 0 0 0 0 132 388 29 6 0 78 0 0 0 0 0 113 363 36 1 0 71 0 8 3 1 0 120 338 54 3 1 20 4 1 1 0 0 84 313 69 2 3 35 0 1 0 0 0 110 288 14 2 0 2 0 0 0 0 0 18 263 8 0 0 8 0 0 0 0 0 16 238 4 0 0 1 0 0 0 0 0 5 213 9 0 0 8 0 0 0 0 0 17 188 5 1 0 0 0 0 0 0 0 6 163 7 1 0 4 0 4 0 0 0 16 138 2 0 0 6 0 8 0 0 0 16 113 6 2 0 4 0 2 0 0 0 14 88 6 6 0 0 0 5 0 0 1 18