Table 1.

U–Pb data, Heidal

Characteristics1Weight (µg)2U (ppm)2Th/U3Pbc4 (ppm)Pbc4 (pg)206Pb/204Pb5207Pb/235U62σ (abs)206Pb/238U62σ (abs)Rho207Pb/206Pb62σ (abs)206Pb/238U6 (Ma)2σ207Pb/235U62σ207Pb/206Pb62σD7 (%)
Sample 65, C-14-65 amphibolite (61°37.809'N, 9°17.524'E)
Z an sp CA [1]12890.810.000.395921.4900.0060.1528900.000520.930.0706920.000106917.12.9926.42.4948.53.13.5
Z an eq CA [1]95260.200.000.7592011.4030.0030.147430.000310.960.0690140.000051886.51.7890.21.4899.21.51.5
Z an eq CA [1]65660.230.022.2144631.3910.0030.146410.000290.950.0689300.000052880.81.6885.31.4896.71.61.9
Z an eq CA [1]75090.230.000.7496161.3740.0030.144840.000300.940.0688020.000061872.01.7877.91.4892.81.82.5
Z an eq CA [1]13980.470.000.938681.3230.0070.140280.000610.920.068390.00014846.23.5855.72.9880.34.24.1
T fr pb NA [1]50100.041.7389400.4640.0650.065610.001050.030.05130.0072409.76.5387.443.9256.2293−62
T fr pb NA [1]66110.001.98132420.4680.0680.066700.001040.110.05090.0073416.36.4389.945.7236.5301−78
Sample 26, C-15-26 banded gneiss (61°47.427'N, 9°16.176'E)
Z an eq CA [9]91530.360.032.365541.8290.0060.172870.000410.850.076740.000131027.92.31056.02.01114.53.38.4
Z eu sp CA [1]232180.710.001.1436491.5380.0040.155290.000330.950.0718070.000057930.61.9945.51.5980.51.65.5
Z an eq CA [1]251250.130.001.5202651.5130.0040.151520.000320.940.0724240.000064909.51.8935.71.5997.91.89.5
Z eu tip CA [1]232070.610.001.9238541.4460.0040.149940.000320.950.0699570.000056900.61.8908.31.5927.11.63.1
Z an eq CA CL* [1]192050.650.002.2160271.4140.0040.147410.000310.950.0695530.000057886.41.8894.71.5915.21.73.4
Z an eq CA CL-D*[1]192840.520.001.0476651.3890.0030.145500.000300.960.0692140.000049875.71.7884.11.4905.11.53.5
Sample 9C, VP9C leucocratic gneiss (plateau just west of Heidalsmuen)
Z an fr CA [1]19260.390.042.919761.9420.0070.182540.000410.750.077160.000181080.92.21095.72.31125.44.74.3
Z an sp CA [1]11670.400.001.742751.6070.0050.161640.000360.850.072120.00011965.92.0973.01.8989.33.12.5
Z an tip CA [1]65470.420.001.5209201.6120.0080.159330.000720.980.0733880.000063953.14.0975.02.91024.71.77.5
Z an tip CA [1]14790.270.001.762491.5280.0040.156290.000310.860.0709080.000094936.21.7941.71.6954.82.72.1
Z sb sp CA [1]17850.440.154.727751.3850.0040.144660.000300.860.0694280.000098870.91.7882.51.6911.52.94.8
Z an tip CA [1]108660.410.012.8226491.3880.0030.143060.000280.960.0703610.000048861.91.6883.81.3938.91.48.8
Sample 66, C-14-66 felsic gneiss (61°37.832'N, 9°17.523'E)
Z an fr CA [1]72090.240.000.8226772.2730.0060.193070.000420.910.0853960.0000931138.02.31204.01.81324.62.115.4
Z sb sp CA [1]43130.290.001.598652.0660.0050.184380.000370.930.0812530.0000771090.92.01137.51.71227.61.812.1
Z sb tip CA [1]103160.190.000.7454571.8500.0040.170590.000340.950.0786460.0000591015.41.91063.41.51163.21.513.7
Z sb tip CA [1]19410.130.000.7130471.5440.0050.156960.000450.890.071350.00011939.92.5948.12.1967.43.23.1
Sample 31, C-15-31 garnet pegmatite (61°47.039'N, 9°15.951'E)
Z sb tip fr CA CL-G1*[1]14980.330.002.948281.7330.0040.168930.000340.920.0744120.0000751006.21.91020.91.61052.72.04.8
Z sb tip fr CA CL-G2*[1]17960.290.001.2135731.6250.0040.163370.000330.940.0721260.000061975.51.8979.81.5989.51.71.5
Z sb tip CA CL-E1*[1]183950.350.002.1854771.6120.0040.162560.000370.960.0719190.000055971.02.0974.91.6983.61.51.4
Z an eq CA CL-F1*[1]101020.370.001.095441.5320.0040.157090.000330.840.0707330.000105940.61.8943.31.7949.73.01.0
Z sb slice CA CL-E2*[1]771140.350.034.5185171.4830.0040.152420.000340.960.0705520.000054914.51.9923.31.5944.41.63.4
Z an eq CA CL-F2*[1]451250.380.001.3391351.4450.0030.149480.000300.960.0701300.000049898.11.7908.01.4932.21.43.9
Z fr CA [1]171020.350.001.794121.4390.0040.149870.000320.910.0696290.000075900.31.8905.21.5917.42.22.0
Z sb tip CA [1]501290.400.001.6386081.4450.0030.151010.000300.960.0693950.000046906.61.7907.81.3910.51.40.5
Z fr CA [1]8930.350.000.882611.4000.0050.146420.000410.870.069350.00012880.92.3889.02.0909.23.53.3
Z fr CA [1]31610.390.000.766881.4250.0050.149520.000370.900.069110.00010898.32.1899.32.0902.03.10.4
Sample 30, C-15-30 granite, Rudihøe (61°47.039'N, 9°15.951'E)
Z sb sp CA [1]87450.270.082.6305152.5670.0060.215400.000450.960.0864310.0000601257.52.41291.31.71347.81.37.4
Z sb eq CA [1]65850.230.213.3112751.7830.0040.169410.000360.940.0763290.0000641008.92.01039.21.61103.71.79.3
Z sb sp CA [1]213870.180.000.9309501.6930.0040.166230.000340.950.0738780.000058991.31.91006.01.51038.11.64.9
Sample 36, C-15-36 garnet–mica schist Storhø (61°43.130'N, 9°14.083'E)
Z tip AA [1]11470.400.001.314844.5520.0140.216280.000560.900.152640.000211262.23.01740.52.62375.72.351.5
Z tip AA [1]17010.460.001.086922.3500.0070.194760.000490.920.087520.000101147.12.71227.62.11372.02.317.9
Z tip AA [1]11240.290.001.012461.8420.0080.166580.000550.790.080190.00022993.23.11060.52.91201.85.418.7
Z lp-fr AA [1]11100.380.002.93051.2320.0120.123010.000530.490.072650.00063747.83.0815.35.61004.317.527.0
Z lp-fr AA [1]12400.530.000.727201.2020.0040.125730.000300.830.069310.00012763.51.7801.31.8908.03.616.9
Z tip AA [1]19610.230.000.768580.7240.0040.086780.000400.920.060500.00012536.52.4553.02.2621.54.214.3
R an NA [14]2570.150.5619.5570.6100.0350.075950.000580.110.058280.00336471.93.548422540.412113
R an NA [2]2060.152.0946.6290.4880.1290.072550.002020.040.0490.013451.512.440485138.2526−235
R an NA [14]3080.161.0737.2490.5750.0520.072950.000780.150.05720.0051453.94.846233499.61849
R an NA [5]1170.170.8214.6400.5170.0650.071470.000930.230.05250.0065445.05.742343305.2259−47
Sample 37, C-15-37 garnet–mica schist, east of Kvernbrusætrin
Z b-op AA [1]18170.480.001.655883.6770.0090.180080.000400.950.1481100.0001211067.42.21566.52.02324.21.458.5
Z b-op AA [1]66500.101.3113.517441.3210.0040.097640.000210.890.0980910.000121600.61.2854.81.51588.12.365.0
Z b-op AA [1]89800.153.1130.114290.7580.0020.088600.000190.750.0620470.000134547.31.1572.91.4675.74.619.8
Z b-op AA [1]135840.270.005.231940.6030.0020.076080.000200.910.0574970.000075472.71.2479.21.2510.62.87.7
R eu sb NA [9]1321.160.6313.8290.5930.1270.077310.001910.110.0560.012480.011.647378436.4415−10
R eu sb NA [9]1110.330.086.6300.7070.1580.076330.002410.170.0670.015474.214.454390843.240145
Sample 64, C-14-64 tonalite Murudalen (61°36.842'N, 9°15.430'E)
Z eu tip CA [1]111800.300.001.0135981.1910.0030.111570.000250.890.0774530.000097681.91.4796.61.51132.92.541.9
Z eu lp fr CA [3]29150.330.005.121790.9450.0030.098260.000230.850.069780.00011604.21.4675.71.5921.93.336.1
Z eu tip CA [1]161870.730.001.488520.5340.0020.069590.000270.940.0556080.000086433.71.6434.21.6436.73.40.7
Z eu sp AA [1]15770.500.001.024940.5340.0020.069110.000240.900.055990.00011430.81.5434.11.5451.94.34.8
Z eu tip AA [1]16240.130.000.647520.5240.0020.068420.000240.910.0555310.000096426.61.4427.71.4433.73.81.7
Sample 23, C-16-23 granite dyke Rekefjell (61°64.609'N, 9°16.805'E)
Z eu tip CA [1]193290.270.000.8413790.7290.0020.085820.000190.930.0616490.000063530.81.2556.21.2662.02.220.6
Z eu sp CA [1]17880.090.001.818940.5280.0030.068810.000260.860.055690.00014429.01.6430.71.7440.15.52.6
Z eu tip CA [1]39310.050.001.299820.5270.0020.068740.000180.870.0555560.000092428.61.1429.51.2434.73.71.5
Z eu lp fr CA [1]119170.050.001.554900.5250.0020.068650.000170.890.0554930.000077428.01.0428.61.0432.13.11.0
Sample 6, VP6 granite (61°38.399'N, 9°18.382'E)
Z eu eq b AA [1]170430.130.001.8423201.7220.0050.170620.000410.970.0732190.0000501015.52.21016.91.71020.01.40.5
Z fr CA [1]132680.400.062.9128951.7050.0040.169240.000340.950.0730780.0000551007.91.91010.51.51016.11.50.9
Z eu tip CA [1]141730.360.022.394751.3860.0040.143470.000300.920.0700720.000072864.31.7883.11.5930.52.17.6
Z lp-tip CA [1]62050.220.001.762861.3450.0040.139050.000280.840.070170.00010839.31.6865.61.6933.53.110.8
Z tip CA [1]571080.540.012.8178321.2250.0030.129480.000280.960.0686360.000051784.91.6812.21.4887.81.512.3
Z sp CA [1]55140.200.213.156470.9720.0030.107300.000280.830.065700.00013657.11.6689.51.7796.84.118.4
Z sp CA [1]1820.350.001.34080.9420.0160.103720.001230.730.065840.00077636.17.2673.78.4801.42421.7
Z tip CA [1]91050.230.385.610590.8730.0030.098470.000200.660.064300.00018605.51.2637.21.7751.65.820.4
Z eu sp pk AA [1]114410.310.001.549540.7300.0020.082700.000230.870.064010.00011512.21.4556.51.5741.93.532.2
T fr br NA [1]44190.1322.3894.2930.5220.0190.068480.000320.020.05520.0021427.02.042613422.381−1.1
T eu pb NA [6]8290.672.3320.6670.5260.0310.068700.000490.120.05550.0032428.33.042920433.61251.3
Sample 59, C-14-59 granite (61°42.479'N, 9°15.004'E)
Z tip CA [1]241270.510.053.2144003.2370.0080.239940.000480.960.0978360.0000691386.42.51466.01.81583.31.313.8
Z lp fr CA [1]19940.490.001.099431.7700.0050.156160.000390.920.0821900.000095935.42.21034.41.91250.12.327.0
Z tip CA [1]91200.500.001.564761.5350.0040.142060.000290.860.078370.00011856.31.7944.51.61156.32.727.7
Z eu sp CA [1]14390.280.000.841451.3080.0250.114820.002060.960.082590.00043700.711.98491112601046.8
Z tip CA [1]14360.340.000.384550.9630.0040.107870.000400.930.064770.00010660.42.3685.02.2766.83.414.6
T fr b NA [1]571040.432.161252230.5270.0090.069100.000240.300.055300.00088430.81.5429.75.8424.235−1.6
R rd AA [1]95130.030.18192980.5230.0060.068780.000270.410.055110.00063428.81.7426.94.3416.925−3.0
Sample 3, VP3 1m granitic dyke in amphibolite (61°37.473'N, 9°21.214'E)
Z tip CA [1]135550.240.001.3641942.1750.0060.178780.000390.930.0882560.0000831060.32.11173.21.81388.11.825.6
Z sp CA [1]22920.290.002.030311.6950.0070.165330.000340.650.074370.00023986.41.91006.82.61051.66.26.7
Z tip CA [1]131000.620.000.9137111.6720.0040.159850.000320.920.0758690.000072956.01.8998.01.51091.61.913.4
Sample 17, C-13-17 felsic dyke cutting Steinhø Complex, Ottadalen (61°47.173'N, 9°23.891'E)
Z sb sp CA [1]11990.250.497.613091.3920.0050.143050.000330.730.070560.00018861.91.9885.42.1944.75.19.4
Z sb tip CA [1]101240.680.042.443671.3040.0030.136670.000270.850.069190.00010825.81.5847.41.5904.53.09.3
Z sb tip CA [1]12910.840.083.031091.3060.0040.134800.000350.860.070250.00011815.22.0848.31.8935.83.313.7
Z sb sp CA [1]20580.780.001.852151.2210.0030.127640.000250.870.0693700.000089774.41.4810.21.4909.82.615.8
Z sb sp CA [1]37350.810.053.822190.9560.0030.103120.000210.800.067220.00012632.71.2681.11.4844.63.626.3
Sample 20, C-15-20 equigranular gabbro Ørnkampen (61°42.980'N, 9°05.700'E)
Z sb eq CA [1]42580.540.001.2145303.3710.0110.261360.000720.930.093540.000111496.83.71497.72.51498.92.30.2
Z sb sp CA [1]71790.450.223.655543.3180.0100.258110.000620.900.093240.000121480.23.21485.42.31492.82.40.9
Z sb tip CA [1]101980.440.001.2262693.2480.0090.254450.000620.950.0925800.0000861461.43.21468.72.21479.31.81.4
  • 1 Z, zircon; T, titanite; R, rutile; eu, euhedral; sb, subhedral; an, anhedral; eq, equant; lp, long-prismatic (l/w >4); sp, short-prismatic (l/w = 2–4); fr, fragment; db, dark brown: pb, pale brown; b, brown; y, yellow; pk, pink; rd, red; op, opaque; [x], number of grains in fraction; CL-X*, imaged with CL and grain or domain X in Figure 5; NA, non-abraded; AA, air abraded; CA, chemically abraded; unless otherwise specified all the zircons were clear and transparent.

  • 2 Weight and concentrations are known to better than 10%, except for those near and below the c. 1 µg limit of resolution of the balance.

  • 3 Th/U model ratio inferred from 208/206 ratio and age of sample.

  • 4 Pbc = common Pb; [ppm] indicates the initial amount, corrected for blank; [pg] is the amount of initial common Pb + blank.

  • 5 Raw data corrected for fractionation and blank.

  • 6 Corrected for fractionation, spike, blank and initial common Pb; error calculated by propagating the main sources of uncertainty.

  • 7 D is degree of discordancy.