胶东三山岛金矿床巨斑花岗岩的形成时代、成因及对金成矿的启示
周晓萍,宋明春,刘向东,闫春明,胡兆君,苏海岗,胡秉谦,周宜康

Formation Age,Petrogenesis,and Implications for Gold Mineralization of Giant Porphyritic Granite in the Sanshandao Gold Deposit in Jiaodong
Xiaoping ZHOU,Mingchun SONG,Xiangdong LIU,Chunming YAN,Zhaojun HU,Haigang SU,Bingqian HU,Yikang ZHOU
表3 三山岛巨斑花岗岩LA-ICP-MS锆石 U-Pb年龄分析结果
Table 3 Analysis results of LA-ICP-MS zircon U-Pb age in Sanshandao giant porphyritic granite
测试点编号

元素含量

/(×10-6

Th/U同位素比值年龄/Ma
ThU207Pb/206Pb207Pb/235U206Pb/238U207Pb/206Pb206Pb/238U207Pb/235U

谐和度

/%

测值1σ测值1σ测值1σ测值2σ测值2σ测值2σ
11835640.30.04910.02210.13420.02220.01980.00621071101262128599
22797740.40.04890.02040.13580.01930.02010.0080134911282129599
3862850.30.05090.08530.13520.05500.01990.0109-5316312731281299
41023550.30.04600.03050.12710.02990.02000.0084-441451282121795
51063670.30.04650.03040.12710.02860.01980.0075-591561272121796
614810.20.04940.06720.15920.06270.02370.0137-14131815141481798
7441700.30.04710.05220.12600.04790.01950.0130-18026412531201196
891450.10.05250.03670.17420.03740.02400.009719417815331621194
91844910.40.05020.02680.13570.02710.01950.00731431351252129797
10983160.30.05210.03150.14310.03020.01990.00942171411272135894
111464240.30.04920.02600.13430.02540.01980.0070951361262128699
12542000.30.04900.04190.13570.04170.02020.0096-7214129212910100
1387312.80.13620.01256.96110.00940.36860.00912 181402 022322 1051796
14301760.20.04820.04040.15840.04100.02350.0186921415051491199
15752800.30.17920.008211.17760.01050.45340.00542 642282 410222 5362095
16391860.20.05060.03130.13950.03150.02000.01002201251283132896
171324350.30.04820.02070.12940.01810.01950.0087701051252123499
182735860.50.04680.02460.12820.02400.01980.0059-81141271122697
194447210.60.04970.02300.13990.02050.02050.00821901091312133598
204841 1400.40.04820.01900.13270.01810.02000.004576921281126499
214479200.50.04740.01940.13260.01850.02030.0061541011292126498
221243580.30.04840.03060.13270.03150.01980.00783814812621267100
231013200.30.04990.03040.13760.02990.01990.00871371541272131797
24982820.30.04940.03100.13640.03110.02000.0087811611282129899
25963810.30.04790.02730.12980.02610.01960.0089591401252124699
261494660.30.04890.03350.13770.02740.02040.017612213413051317100
271494590.30.04560.02480.12440.02470.01970.0066-791261262119694
292332351.00.16380.00519.74850.00470.43010.00312 494172 306122 411996