Table 2.

LA-ICP-MS zircon U–Pb dating and in situ Lu–Hf isotopic compositions for representative andesitic samples from Chenpeng and Jingangtai formations in the Guangshan and Shangcheng areas, North Huaiyang Belt

SpotTh/UIsotopic ratiosApparent age (Ma)176Yb/177Hf176Lu/177Hf176Hf/177Hf1σεHf(t)1σTDM (Ga)1σT2DM (Ga)1σ
207Pb/206Pb±1σ207Pb/235U±1σ206Pb/238U±1σ207Pb/206Pb±1σ207Pb/235U±1σ206Pb/238U±1σ
Andesitic sample 03XY-24 from Chenpeng Formation in the Guangshan area
03XY-24-011.110.051010.002240.139800.004750.019880.0003424198133412720.010.0005790.2819230.000018−27.20.61.850.022.890.04
03XY-24-021.530.053850.003030.145980.007060.019660.00037365122138612620.020.0005860.2820290.000018−23.30.61.700.022.650.04
03XY-24-031.170.049740.002520.136250.005720.019860.00036183114130512720.010.0004140.2820240.000014−23.70.51.700.022.670.03
03XY-24-041.100.051600.002230.140240.004660.019710.0003426896133412620.020.0008060.2818600.000021−29.40.71.950.033.030.04
03XY-24-062.040.050690.003960.139060.010050.019890.00042227171132912730.020.0006850.2820010.000018−24.50.61.750.022.720.04
03XY-24-071.480.048800.002550.135060.005940.020060.00037138118129512820.020.0006280.2820430.000023−23.00.81.690.032.630.05
03XY-24-081.350.052490.002520.139770.005460.019300.00035307106133512320.020.0009410.2818880.000017−28.40.61.920.022.970.04
03XY-24-091.190.048760.002000.137340.004240.020420.0003513794131413020.020.0005910.2818690.000016−29.10.61.920.023.010.04
03XY-24-100.820.110200.003504.663720.081190.306780.005031803571761151725250.010.0005240.2814840.000018−7.00.62.440.022.900.04
03XY-24-110.910.048790.001760.133830.003240.019880.0003313883128312720.010.0004120.2819590.000016−26.00.61.790.022.810.03
03XY-24-121.460.049900.002290.136270.005030.019800.00035190103130512620.020.0008210.2819330.000016−26.90.61.850.022.870.03
03XY-24-131.380.055010.002150.150350.004300.019810.0003441385142412720.030.0013120.2820810.000021−21.50.71.660.032.540.05
03XY-24-140.720.048110.001570.136510.002660.020570.0003410575130213120.020.0008700.2820250.000018−23.60.61.720.032.670.04
03XY-24-150.010.050130.001900.232120.006340.033570.0005820186212521340.010.0005210.2819770.000014−23.60.51.770.022.730.03
03XY-24-170.970.047470.001680.132890.003180.020300.000347283127313020.030.0009130.2820990.000022−21.10.81.620.032.510.05
03XY-24-181.490.046770.001880.130220.003970.020190.000353894124412920.030.0009130.2820990.000022−21.20.81.620.032.510.05
03XY-24-191.360.050470.002040.139390.004290.020030.0003521791133412820.020.0005760.2821140.000018−20.40.61.590.022.470.04
03XY-24-211.160.047970.002580.133950.006240.020250.0003897124128612920.010.0004510.2820650.000018−22.20.61.650.032.580.04
03XY-24-221.260.048160.002270.133000.005190.020030.00037107108127512820.020.0006650.2820990.000021−21.10.71.610.032.510.05
03XY-24-231.150.049560.002070.136200.004460.019940.0003617595130412720.020.0007010.2819130.000015−27.60.51.870.022.910.03
03XY-24-241.190.049270.002500.134180.005800.019760.00037161115128512620.010.0005690.2819130.000018−27.70.61.860.022.910.04
03XY-24-250.490.048460.002180.226650.008340.033940.00061122103207721540.010.0002410.2825010.000014−5.10.51.040.021.570.03
Andesitic sample 03XY-39 from Jingangtai Formation in the Shangcheng area
03XY-39-011.730.049800.005280.139450.014050.020310.000531862301331313030.020.0007910.2819900.000025−24.90.91.770.042.750.06
03XY-39-021.230.053080.004000.139240.009600.019020.00042332162132912230.030.0012730.2820660.000023−22.40.81.680.032.590.05
03XY-39-042.230.048050.002420.136000.005710.020530.00037102115130513120.020.0009550.2820080.000024−24.40.81.750.032.710.05
03XY-39-052.180.049350.002910.132760.006850.019510.00037164132127612520.030.0009970.2820150.000019−24.00.71.740.032.690.04
03XY-39-061.530.059910.005930.171180.015950.020720.000566012011601413240.020.0009550.2820080.000024−24.30.81.750.032.710.05
03XY-39-072.480.049310.003120.138290.007760.020340.00040163141132713030.070.0025260.2820310.000020−23.60.71.790.032.670.04
03XY-39-081.210.048890.006580.135430.017550.020090.000621432881291612840.020.0008860.2820780.000020−21.90.71.650.032.560.04
03XY-39-102.070.049350.002750.130860.006260.019230.00036164125125612320.040.0014820.2820750.000019−22.00.71.680.032.560.04
03XY-39-111.260.050720.003420.140340.008520.020070.00041228149133812830.030.0011710.2820950.000018−21.20.61.640.032.520.04
03XY-39-121.190.051460.007870.144730.021440.020400.000682613181371913040.010.0004540.2820640.000018−22.30.61.650.022.580.04
03XY-39-131.450.049340.005650.134800.014770.019810.000521642481281312730.020.0007560.2820800.000021−21.70.71.640.032.550.05
03XY-39-142.180.048980.004660.140290.012570.020770.000511472091331113330.040.0015890.2820550.000025−22.70.91.710.042.610.05
03XY-39-151.510.050570.003240.140900.008040.020210.00040221142134712930.040.0013840.2820770.000018−21.90.61.670.032.560.04
03XY-39-161.220.051690.003220.143010.007880.020060.00040272137136712830.040.0014360.2820730.000020−22.10.71.680.032.570.04
03XY-39-171.230.050440.008900.136660.023510.019650.000692153641302112540.010.0005200.2820830.000019−21.60.71.630.032.540.04
03XY-39-181.180.050170.004040.137000.010220.019800.00043203177130912630.020.0009250.2820920.000019−21.40.71.630.032.530.04
03XY-39-191.980.050620.004060.137490.010190.019700.00045224177131912630.020.0006890.2820550.000021−22.60.71.670.032.600.05
03XY-39-201.720.048210.003120.136010.007880.020460.00040110146130713130.040.0014600.2820630.000018−22.30.61.700.022.590.04
03XY-39-221.380.049090.003930.136060.010080.020100.00044152178130912830.030.0010640.2820860.000023−21.60.81.650.032.540.05
03XY-39-231.420.048580.003760.131170.009340.019580.00042128173125812530.020.0006570.2821200.000017−20.20.61.580.022.460.04
03XY-39-241.630.051550.003800.147550.009930.020760.00044265161140913330.040.0015090.2820780.000021−21.90.81.680.032.560.05
03XY-39-251.640.049600.003350.133360.008110.019500.00040176150127712530.030.0011120.2820690.000023−24.90.81.670.032.640.05