Kaiser - Two Creeks - PCMA - ITRDB WI013 Kaiser, F.K. Kaiser, F.K. PCMA Picea mariana (Mill.) Britton, Sterns, & Poggenb. black spruce earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC84_54; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_78; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC84_48; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_301; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_142; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_96; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_402; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_112; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_50; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_307; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_99; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_70; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_91; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_32; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_30; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC84_173; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_103; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (age,null,null,year Common Era,null,tree ring,null,null,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_85; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC84_131; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC84_37; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: TC80_31; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree-ring (Two Creeks>LATITUDE 44.3067>LONGITUDE -87.5283) Dendrochronological analysis of fossil wood from Two Creeks, Wisconsin, reveals that the Two Creekan Intetstade lasted at least 252 yr. The sites crossdated by tree rings cover an area of about 970 km2. AMS determinations from the beginning and end of the chronology open a 14 C time window for the episode from 12,050 to 11,750 yr B.P. The interval is contemporaneous with the Older Dryas in northern Europe. The development of a forest covering at least 970 km2 on the western shore of Lake Michigan indicates a water level about as low as in modern times. Glacier retreat must have opened drainage channels either through the Straits of Mackinac or via the Indian River Plateau into the eastern lakes. The beginning of the tree-ring chronology coincides with the peak of meltwater pulse 1A at 12,000 yr B.P. Increased amounts of meltwater seem to have disturbed the heat exchange between the waters and the atmosphere in the North Atlantic off the Gulf of St. Lawrence or affected the d18O-ratio of the evaporation, causing the climatic or isotopic reversal of the Older Dryas in Greenland and northern Europe. STUDY NOTES: Collection purpose: # Determination of Two Creeks Insterstadial, meltwater event # # Cores are stored at: # WSL # # Notes: # Older Dryas/early Alleroed, cal. 12000-11750 BP # Formerly Two Creeks (TC) # # References: # Kaiser K.F.(1994) # Two Creeks Interstadial dated through dendrochronology and AMS, # QR 42, 288-298.; # Kaiser, K.F. (1993): Beitrage zur Klimageschichte # vom spaten Hochglazial bis ins fruhe Holozan ... # Ziegler Druck- und Verlags-AG, Winterthur. 203p. NOAA Template Raw Measurements file added 2019-02-08. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Kaiser, F.K. 2010-06-10 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16825 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/wi013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/wi013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013.rwl English https://www.ncdc.noaa.gov/paleo/study/16825 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/wi013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/wi013.rwl Klaus Felix Kaiser1994Two Creeks Interstade Dated through Dendrochronology and AMSQuaternary Research423288-29810.1006/qres.1994.1079http://www.sciencedirect.com/science/article/pii/S0033589484710799 START YEAR: 12000 cal yr BP * END YEAR: 11750 cal yr BP -87.5283 44.3067 -87.5283 44.3067