Northern Okinawa Trough Geochemical, Sedimentary and Oxygen Isotope Data during the last 24.3 ka Chang, F.; Li, T.; Xiong, Z.; Xu, Z.K. Chang, F. Li, T. Xiong, Z. Xu, Z.K. earth science/paleoclimate/paleoceanography (strontium,sediment,null,microgram per gram,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (iron oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,total Fe2O3) earth science/paleoclimate/paleoceanography (sodium oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (phosphorus,sediment,null,microgram per gram,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (manganese,sediment,null,microgram per gram,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (calcium oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (titanium,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (magnesium oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (organic carbon,sediment,null,percent,null,paleoceanography,null,elemental analysis,N,null) earth science/paleoclimate/paleoceanography (nitrogen,sediment,null,percent,null,paleoceanography,null,elemental analysis,N,null) earth science/paleoclimate/paleoceanography (aluminum oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (potassium oxide,sediment,null,percent,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/paleoceanography (grain size mean,sediment,null,micrometer,null,paleoceanography,null,laser particle size analysis,N,null) earth science/paleoclimate/paleoceanography (barium,sediment,null,microgram per gram,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (rubidium,sediment,null,microgram per gram,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,organic matter,null,per mil PDB,null,paleoceanography,null,elemental analysis,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (PC-1>LATITUDE 31.458333>LONGITUDE 128.413333) Geochemical and sedimentological analyses of core PC-1 recovered from the northern East China Sea (ECS) provide insights into variations in terrigenous input associated with sea-level and climate changes over the past 24.3 ka. Based on high-resolution multiproxy records, our results suggest that the competing processes of sea-level and monsoonally-driven precipitation determined terrigenous input to the northern ECS. Dominance of terrigenous material, along with relatively light G. ruber d18O, indicate that the Last Glacial Maximum (LGM) lowstand of sea-level have occurred during the period 21.5-19.6 ka, not suggesting an early slow rise but supporting the conventional LGM age of 21 ka. This LGM lowstand was terminated by the rapid sea-level rise of 19-ka MWP, which is well expressed by the nearly synchronous decreases in both terrigenous detritus and mean grain size from 19.6 to 18.9 ka. MWP-1A is clearly marked in our records by a sharp reduction in terrigenous input and pronounced maxima of G. ruber d18O at 15.3-14.8 ka, given the considerable age uncertainties of deglacial marine radiocarbon samples. A slightly increasing input of terrigenous matter is noted after 13.4 ka, potentially pointing to a sea-level fall following the Inter-Allerød Cooling Period (IACP), which was seldom reported previously. Although MWP-1B did not leave robust signatures in terrigenous input, it is explicitly captured by the heavy d18O of G. ruber and decline in mean grain size at 11.5-10.9 ka. MWP-1c probably occurred in a broad millennial interval with multiple peaks, which are robustly marked by the abrupt variations in terrigenous input and marine organic matter at 9.7-9.3 and 9.1 ka, respectively. During the late Holocene, the effect of continuously weakening monsoon precipitation overwhelmed that of stable sea-level resulting in a uniform increase in the proportion of marine-derived organic matter after 5.5 ka. STUDY NOTES: Detailed records of multiple proxies constraining terrigenous discharge to the northern Okinawa Trough during the last 24.3 ka Provided Keywords: terrigenous input; sea-level change; East China Sea NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Chang, F. Investigator : Li, T. Investigator : Xiong, Z. Investigator : Xu, Z.K. 2015-06-03 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18755 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-c-n.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-d18o-gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-sed.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-c-n.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-d18o-gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-sed.txt English https://www.ncdc.noaa.gov/paleo/study/18755 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-c-n.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-d18o-gs.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chang2015/chang2015-sed.txt Fengming Chang, Tiegang Li, Zhifang Xiong and Zhaokai Xu2015Evidence for sea-level and monsoonally-driven variations in terrigenous input to the northern East China Sea during the last 24.3 ka Paleoceanography3010.1002/2014PA002733 START YEAR: 24300 cal yr BP * END YEAR: 78 cal yr BP 128.413333 31.458333 128.413333 31.458333