现代地质 ›› 2020, Vol. 34 ›› Issue (05): 1028-1042.DOI: 10.19657/j.geoscience.1000-8527.2020.042
何碧1(), 张向文1, 赵飞1, 金灿海2, 任光明2, 王宁祖1, 张文斌1, 张志玺1, 孙平原1
收稿日期:
2018-09-12
修回日期:
2020-06-16
出版日期:
2020-10-28
发布日期:
2020-10-29
作者简介:
何 碧,男,硕士,工程师,1990年出生,古生物学与地层学专业,主要从事区域地质与生态环境地质工作。Email: hebidzxgsw@163.com。
基金资助:
HE Bi1(), ZHANG Xiangwen1, ZHAO Fei1, JIN Canhai2, REN Guangming2, WANG Ningzu1, ZHANG Wenbin1, ZHANG Zhixi1, SUN Pingyuan1
Received:
2018-09-12
Revised:
2020-06-16
Online:
2020-10-28
Published:
2020-10-29
摘要:
贵州省黔西县官坝地区位于华南板块西南部,其二叠系—三叠系界线剖面出露较好,界线处出露3层黏土岩。采集贵州黔西官坝地区二叠系—三叠系地质界面黏土岩1件U-Pb年龄样品、7件地球化学样品,对其锆石进行U-Pb定年以及主量、微量和稀土元素进行测试分析。锆石 LA-ICP-MS U-Pb分析结果表明,U和Th含量分别为60.26×10 -6~297.9×10 -6和46.14×10 -6~244.26×10 -6,Th/U比值介于0.76~1.55之间,为典型的岩浆锆石;获得 206Pb/ 238U加权平均年龄为(252.6±1.4) Ma,谐和年龄为(252.7±0.6) Ma。地球化学分析结果显示,黏土岩属于高硅、铝、钾、镁,低铁、钛的钙碱质中酸性火山物质,具有稀土元素总量相对较高、相对富集轻稀土元素和轻、重稀土元素分馏程度高的特征,负Eu异常明显,δEu =0.19~0.45。上述岩石地球化学特征表明,贵州黔西官坝地区(华南板块西南)二叠系—三叠系界线位置总体上可与浙江长兴(华南板块东南)海相二叠系—三叠系界线(金钉子)相比较。
中图分类号:
何碧, 张向文, 赵飞, 金灿海, 任光明, 王宁祖, 张文斌, 张志玺, 孙平原. 贵州官坝地区二叠系—三叠系地质界面黏土岩的火山岩特征、LA-ICP-MS 锆石U-Pb年龄及其地质意义[J]. 现代地质, 2020, 34(05): 1028-1042.
HE Bi, ZHANG Xiangwen, ZHAO Fei, JIN Canhai, REN Guangming, WANG Ningzu, ZHANG Wenbin, ZHANG Zhixi, SUN Pingyuan. Volcanic Characteristics, LA-ICP-MS Zircon U-Pb Ages of Claystone at the Permian-Triassic Boundary, Guanba Area in Guizhou Province, South China and the Geological Implications[J]. Geoscience, 2020, 34(05): 1028-1042.
图1 贵州省大地构造单元划分地质简图((a),据参考文献[21]修改)及官坝地区地质简图((b),据参考文献[20]修改) (a)图中:Ⅳ-4-1-1.威宁穹盆构造变形区;Ⅳ-4-1-2.六盘水北西向褶断带;Ⅳ-4-1-3(1).织金穹盆构造变形区;Ⅳ-4-1-3(2).毕节弧形褶皱带;Ⅳ-4-1-3(3).凤冈南北向隔槽式褶皱变形区;Ⅳ-4-1-4.赤水平缓褶皱变形区;Ⅳ-4-2-1.兴义穹盆构造变形区;Ⅳ-4-2-2(1).册亭东西向紧闭褶皱变形区;Ⅳ-4-2-2(2).望谟北西向褶皱带;Ⅳ-4-2-3(1).都匀南北向隔槽式褶皱变形区;Ⅳ-4-2-3(2).铜仁复式褶皱变形区;Ⅳ-4-2-4(1).榕江开阔复式褶皱变形区;Ⅳ-4-2-4(2).黎平紧闭复式褶皱变形区。(b)图中:1.下侏罗统碎屑岩;2.下三叠统—上三叠统碳酸盐岩-碎屑岩;3.中二叠统—上二叠统碳酸盐岩-碎屑岩-碳酸盐岩;4.下石炭统碳酸盐岩;5.中寒武统碳酸盐岩;6.断层;7.产状;8.剖面位置及采样点;9.地名
Fig.1 Geological sketch map of tectonic units in Guizhou Province ((a),modified after reference [21]), and Guanba area ((b), modified after reference [20])
图2 官坝地区P-T界线柱状图(a)及剖面位置(b) 1.泥岩;2.泥质粉砂岩;3.钙质泥岩;4.碳质泥岩;5.生物碎屑灰岩;6.含硅质团块灰岩;7.灰岩;8.白云质灰岩;9.火山成因黏土岩;10.水平层理;11.双壳类;12.菊石类;13.腹足类;14.腕足类;P3l2.上二叠统龙潭组二段;P3h.上二叠统合山组;T1y1.下三叠统夜郎组一段;T1y2.下三叠统夜郎组二段;T1y3.下三叠统夜郎组三段;T1j1.下三叠统嘉陵江组一段
Fig.2 Stratigraphic column of P-T boundary at Guanba (a) and location of the profile (b)
图3 官坝地区P-T界线黏土岩野外照片(a,b)及显微镜下照片(+)(c)、扫描电镜照片(d) Cry.晶屑;P-Hya.塑性玻屑
Fig.3 Field photos (a-b), and optical (c) and SEM (d) microphotographs of the P-T boundary claystone at Guanba, Guizhou Province
图4 官坝地区P-T界线黏土岩岩浆锆石的阴极发光图像及测点位置和年龄(Ma)
Fig.4 Zircon CL images of the P-T boundary Guanba claystone(Red circle and white number denote laser spot and U-Pb age, respectively)
点号 | 含量/10-6 | Th/U | 同位素比值 | 同位素年龄/Ma | 谐和 度/% | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Th | U | Pb | 207Pb/ 206Pb±1σ | 207Pb/ 235U±1σ | 206Pb/ 238U±1σ | 208Pb/ 232Th±1σ | 207Pb/ 206Pb±1σ | 207Pb/ 235U±1σ | 206Pb/ 238U±1σ | 208Pb/ 232Th±1σ | |||
01 | 183.92 | 208.31 | 11.06 | 0.88 | 0.050 2±0.001 4 | 0.275±0.008 | 0.039 9±0.000 3 | 0.012 8±0.000 2 | 211.2±66.7 | 247.0±6.0 | 252.4±2.1 | 257.7±4.2 | 97 |
02 | 105.42 | 108.33 | 5.98 | 0.97 | 0.054 4±0.002 0 | 0.305±0.011 | 0.040 8±0.000 5 | 0.012 7±0.000 3 | 390.8±83.3 | 270.4±8.4 | 257.5±2.8 | 254.1±5.5 | 95 |
03 | 160.09 | 167.54 | 9.03 | 0.96 | 0.049 1±0.001 5 | 0.277±0.009 | 0.040 9±0.000 4 | 0.012 5±0.000 2 | 153.8±76.8 | 248.2±6.8 | 258.2±2.4 | 251.5±4.5 | 96 |
04 | 77.68 | 76.66 | 4.24 | 1.01 | 0.052 3±0.002 5 | 0.291±0.013 | 0.041 0±0.000 5 | 0.012 9±0.000 3 | 298.2±109.2 | 259.3±10.3 | 259.2±3.3 | 258.2±5.8 | 99 |
06 | 52.05 | 61.13 | 3.13 | 0.85 | 0.054 9±0.002 7 | 0.290±0.012 | 0.039 3±0.000 5 | 0.012 1±0.000 3 | 409.3±111.1 | 258.6±9.8 | 248.6±3.2 | 243.8±6.6 | 96 |
07 | 96.26 | 98.42 | 5.13 | 0.98 | 0.055 5±0.002 4 | 0.294±0.012 | 0.039 4±0.000 4 | 0.012 1±0.000 3 | 435.2±91.7 | 261.8±9.3 | 249.3±2.8 | 243.2±5.6 | 95 |
08 | 46.14 | 60.26 | 3.06 | 0.77 | 0.055 0±0.003 2 | 0.297±0.016 | 0.040 3±0.000 6 | 0.012 4±0.000 4 | 413.0±129.6 | 264.0±12.4 | 254.6±3.7 | 248.5±7.9 | 96 |
09 | 67.88 | 71.53 | 3.82 | 0.95 | 0.054 5±0.002 6 | 0.292±0.013 | 0.039 7±0.000 5 | 0.012 7±0.000 3 | 390.8±107.4 | 260.5±10.2 | 251.1±3.3 | 255.3±6.6 | 96 |
10 | 163.71 | 105.59 | 6.45 | 1.55 | 0.054 7±0.002 5 | 0.295±0.013 | 0.040 0±0.000 5 | 0.012 8±0.000 2 | 398.2±100.9 | 262.8±10.0 | 252.6±3.0 | 257.7±4.8 | 96 |
11 | 96.17 | 112.87 | 5.90 | 0.85 | 0.051 7±0.001 8 | 0.280±0.009 | 0.040 0±0.000 4 | 0.012 4±0.000 3 | 333.4±81.5 | 250.8±7.4 | 252.6±2.5 | 249.5±5.2 | 99 |
14 | 46.66 | 60.61 | 3.14 | 0.77 | 0.053 1±0.002 6 | 0.283±0.013 | 0.039 9±0.000 5 | 0.012 7±0.000 3 | 344.5±111.1 | 252.7±10.0 | 252.4±3.3 | 254.7±6.9 | 99 |
15 | 122.44 | 140.11 | 7.24 | 0.87 | 0.054 1±0.002 0 | 0.289±0.010 | 0.039 5±0.000 4 | 0.012 5±0.000 3 | 376.0±85.2 | 257.9±7.7 | 249.5±2.7 | 250.7±5.3 | 96 |
16 | 151.28 | 137.83 | 7.65 | 1.10 | 0.053 8±0.001 8 | 0.294±0.010 | 0.040 1±0.000 4 | 0.012 7±0.000 2 | 364.9±75.9 | 261.8±7.5 | 253.3±2.5 | 255.0±4.6 | 96 |
17 | 157.34 | 150.48 | 8.18 | 1.05 | 0.054 1±0.001 8 | 0.290±0.009 | 0.039 3±0.000 4 | 0.012 6±0.000 2 | 376.0±74.1 | 258.5±7.4 | 248.4±2.4 | 252.4±4.1 | 96 |
18 | 214.65 | 234.32 | 12.52 | 0.92 | 0.053 2±0.001 4 | 0.292±0.007 | 0.039 8±0.000 3 | 0.013 1±0.000 2 | 344.5±57.4 | 259.8±5.9 | 251.7±2.0 | 262.8±4.0 | 96 |
19 | 112.41 | 114.06 | 6.05 | 0.99 | 0.052 8±0.002 2 | 0.280±0.011 | 0.040 2±0.000 5 | 0.012 3±0.000 3 | 320.4±96.3 | 254.7±8.7 | 253.9±2.9 | 247.6±5.5 | 99 |
21 | 92.95 | 94.93 | 5.12 | 0.98 | 0.052 6±0.002 0 | 0.280±0.010 | 0.039 4±0.000 4 | 0.013 0±0.000 2 | 322.3±82.4 | 250.6±7.9 | 249.4±2.5 | 261.8±4.8 | 99 |
22 | 80.47 | 106.22 | 5.45 | 0.76 | 0.053 2±0.001 9 | 0.289±0.010 | 0.039 7±0.000 4 | 0.013 1±0.000 3 | 338.9±83.3 | 257.4±8.0 | 251.2±2.5 | 262.3±5.3 | 97 |
24 | 244.26 | 297.90 | 15.63 | 0.82 | 0.050 6±0.001 2 | 0.280±0.007 | 0.040 2±0.000 3 | 0.012 6±0.000 2 | 233.4±57.4 | 250.6±5.4 | 254.3±1.8 | 253.7±3.7 | 98 |
25 | 98.44 | 99.04 | 5.44 | 0.99 | 0.050 5±0.001 8 | 0.276±0.009 | 0.040 2±0.000 4 | 0.012 8±0.000 2 | 216.7±83.3 | 247.8±7.5 | 254.2±2.8 | 256.1±4.9 | 97 |
表1 官坝地区P-T界线黏土岩样品(PM315-TW1)锆石U-Pb同位素测年数据(LA-ICP-MS)
Table 1 LA-ICP-MS zircon U-Pb dating results for the P-T boundary claystone (sample PM315-TW1) from Guanba
点号 | 含量/10-6 | Th/U | 同位素比值 | 同位素年龄/Ma | 谐和 度/% | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Th | U | Pb | 207Pb/ 206Pb±1σ | 207Pb/ 235U±1σ | 206Pb/ 238U±1σ | 208Pb/ 232Th±1σ | 207Pb/ 206Pb±1σ | 207Pb/ 235U±1σ | 206Pb/ 238U±1σ | 208Pb/ 232Th±1σ | |||
01 | 183.92 | 208.31 | 11.06 | 0.88 | 0.050 2±0.001 4 | 0.275±0.008 | 0.039 9±0.000 3 | 0.012 8±0.000 2 | 211.2±66.7 | 247.0±6.0 | 252.4±2.1 | 257.7±4.2 | 97 |
02 | 105.42 | 108.33 | 5.98 | 0.97 | 0.054 4±0.002 0 | 0.305±0.011 | 0.040 8±0.000 5 | 0.012 7±0.000 3 | 390.8±83.3 | 270.4±8.4 | 257.5±2.8 | 254.1±5.5 | 95 |
03 | 160.09 | 167.54 | 9.03 | 0.96 | 0.049 1±0.001 5 | 0.277±0.009 | 0.040 9±0.000 4 | 0.012 5±0.000 2 | 153.8±76.8 | 248.2±6.8 | 258.2±2.4 | 251.5±4.5 | 96 |
04 | 77.68 | 76.66 | 4.24 | 1.01 | 0.052 3±0.002 5 | 0.291±0.013 | 0.041 0±0.000 5 | 0.012 9±0.000 3 | 298.2±109.2 | 259.3±10.3 | 259.2±3.3 | 258.2±5.8 | 99 |
06 | 52.05 | 61.13 | 3.13 | 0.85 | 0.054 9±0.002 7 | 0.290±0.012 | 0.039 3±0.000 5 | 0.012 1±0.000 3 | 409.3±111.1 | 258.6±9.8 | 248.6±3.2 | 243.8±6.6 | 96 |
07 | 96.26 | 98.42 | 5.13 | 0.98 | 0.055 5±0.002 4 | 0.294±0.012 | 0.039 4±0.000 4 | 0.012 1±0.000 3 | 435.2±91.7 | 261.8±9.3 | 249.3±2.8 | 243.2±5.6 | 95 |
08 | 46.14 | 60.26 | 3.06 | 0.77 | 0.055 0±0.003 2 | 0.297±0.016 | 0.040 3±0.000 6 | 0.012 4±0.000 4 | 413.0±129.6 | 264.0±12.4 | 254.6±3.7 | 248.5±7.9 | 96 |
09 | 67.88 | 71.53 | 3.82 | 0.95 | 0.054 5±0.002 6 | 0.292±0.013 | 0.039 7±0.000 5 | 0.012 7±0.000 3 | 390.8±107.4 | 260.5±10.2 | 251.1±3.3 | 255.3±6.6 | 96 |
10 | 163.71 | 105.59 | 6.45 | 1.55 | 0.054 7±0.002 5 | 0.295±0.013 | 0.040 0±0.000 5 | 0.012 8±0.000 2 | 398.2±100.9 | 262.8±10.0 | 252.6±3.0 | 257.7±4.8 | 96 |
11 | 96.17 | 112.87 | 5.90 | 0.85 | 0.051 7±0.001 8 | 0.280±0.009 | 0.040 0±0.000 4 | 0.012 4±0.000 3 | 333.4±81.5 | 250.8±7.4 | 252.6±2.5 | 249.5±5.2 | 99 |
14 | 46.66 | 60.61 | 3.14 | 0.77 | 0.053 1±0.002 6 | 0.283±0.013 | 0.039 9±0.000 5 | 0.012 7±0.000 3 | 344.5±111.1 | 252.7±10.0 | 252.4±3.3 | 254.7±6.9 | 99 |
15 | 122.44 | 140.11 | 7.24 | 0.87 | 0.054 1±0.002 0 | 0.289±0.010 | 0.039 5±0.000 4 | 0.012 5±0.000 3 | 376.0±85.2 | 257.9±7.7 | 249.5±2.7 | 250.7±5.3 | 96 |
16 | 151.28 | 137.83 | 7.65 | 1.10 | 0.053 8±0.001 8 | 0.294±0.010 | 0.040 1±0.000 4 | 0.012 7±0.000 2 | 364.9±75.9 | 261.8±7.5 | 253.3±2.5 | 255.0±4.6 | 96 |
17 | 157.34 | 150.48 | 8.18 | 1.05 | 0.054 1±0.001 8 | 0.290±0.009 | 0.039 3±0.000 4 | 0.012 6±0.000 2 | 376.0±74.1 | 258.5±7.4 | 248.4±2.4 | 252.4±4.1 | 96 |
18 | 214.65 | 234.32 | 12.52 | 0.92 | 0.053 2±0.001 4 | 0.292±0.007 | 0.039 8±0.000 3 | 0.013 1±0.000 2 | 344.5±57.4 | 259.8±5.9 | 251.7±2.0 | 262.8±4.0 | 96 |
19 | 112.41 | 114.06 | 6.05 | 0.99 | 0.052 8±0.002 2 | 0.280±0.011 | 0.040 2±0.000 5 | 0.012 3±0.000 3 | 320.4±96.3 | 254.7±8.7 | 253.9±2.9 | 247.6±5.5 | 99 |
21 | 92.95 | 94.93 | 5.12 | 0.98 | 0.052 6±0.002 0 | 0.280±0.010 | 0.039 4±0.000 4 | 0.013 0±0.000 2 | 322.3±82.4 | 250.6±7.9 | 249.4±2.5 | 261.8±4.8 | 99 |
22 | 80.47 | 106.22 | 5.45 | 0.76 | 0.053 2±0.001 9 | 0.289±0.010 | 0.039 7±0.000 4 | 0.013 1±0.000 3 | 338.9±83.3 | 257.4±8.0 | 251.2±2.5 | 262.3±5.3 | 97 |
24 | 244.26 | 297.90 | 15.63 | 0.82 | 0.050 6±0.001 2 | 0.280±0.007 | 0.040 2±0.000 3 | 0.012 6±0.000 2 | 233.4±57.4 | 250.6±5.4 | 254.3±1.8 | 253.7±3.7 | 98 |
25 | 98.44 | 99.04 | 5.44 | 0.99 | 0.050 5±0.001 8 | 0.276±0.009 | 0.040 2±0.000 4 | 0.012 8±0.000 2 | 216.7±83.3 | 247.8±7.5 | 254.2±2.8 | 256.1±4.9 | 97 |
图5 官坝地区P-T界线黏土岩锆石U-Pb年龄谐和图(a)和加权平均年龄值(b)
Fig.5 U-Pb concordant diagram (a) and weighted average age (b) of zircons from the P-T boundary claystone at Guanba
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | 烧失量 | 总量 | SiO2/ Al2O3 | TiO2/ Al2O3 | Al2O3 / TiO2 | Al2O3/(Al2O3 +TFe2O3) | Rb |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PM315-DH5 | 55.78 | 0.27 | 22.85 | 1.03 | 0.09 | 0.009 | 3.06 | 1.03 | 0.55 | 6.68 | 0.096 | 8.52 | 99.97 | 2.44 | 0.012 | 84.63 | 0.75 | 226.0 |
PM315-DH6 | 56.65 | 0.28 | 22.74 | 0.94 | 0.09 | 0.010 | 3.02 | 0.59 | 0.51 | 6.72 | 0.066 | 8.32 | 99.94 | 2.49 | 0.012 | 81.21 | 0.77 | 217.8 |
PM315-DH7 | 56.12 | 0.26 | 22.88 | 0.90 | 0.13 | 0.008 | 3.02 | 0.74 | 0.85 | 6.65 | 0.071 | 8.30 | 99.93 | 2.45 | 0.011 | 88.00 | 0.77 | 220.5 |
PM315-DH9 | 78.45 | 0.27 | 11.12 | 1.03 | 0.40 | 0.006 | 1.15 | 0.25 | 0.27 | 3.16 | 0.039 | 3.78 | 99.93 | 7.05 | 0.024 | 41.19 | 0.59 | 91.2 |
PM315-DH10 | 79.89 | 0.27 | 10.18 | 0.74 | 0.45 | 0.012 | 1.15 | 0.37 | 0.33 | 2.92 | 0.085 | 3.56 | 99.96 | 7.85 | 0.027 | 37.70 | 0.65 | 95.4 |
PM315-DH11 | 52.11 | 0.43 | 25.65 | 1.36 | 0.40 | 0.008 | 3.08 | 0.32 | 0.48 | 7.07 | 0.091 | 8.96 | 99.96 | 2.03 | 0.017 | 59.65 | 0.72 | 245.7 |
PM315-DH13 | 56.12 | 0.45 | 22.64 | 1.96 | 0.40 | 0.031 | 2.45 | 0.56 | 0.42 | 6.24 | 0.100 | 8.56 | 99.93 | 2.48 | 0.020 | 50.31 | 0.61 | 191.7 |
样品编号 | Ba | Th | U | Ta | Nb | Sr | Zr | Hf | Co | Ni | Ga | Pb | Cr | Sc | La | Ce | Pr | Nd |
PM315-DH5 | 265.00 | 52.30 | 13.80 | 3.96 | 40.300 | 35.20 | 318.00 | 10.84 | 3.91 | 9.52 | 28.60 | 38.60 | 5.21 | 17.60 | 135.60 | 212.06 | 31.20 | 108.903 |
PM315-DH6 | 283.88 | 56.30 | 13.09 | 4.56 | 41.600 | 26.46 | 317.84 | 10.52 | 5.18 | 8.89 | 28.28 | 37.20 | 5.21 | 17.60 | 132.00 | 217.67 | 29.18 | 110.128 |
PM315-DH7 | 278.63 | 52.90 | 12.75 | 4.30 | 39.312 | 22.37 | 300.44 | 10.35 | 5.50 | 8.88 | 28.70 | 38.22 | 5.37 | 17.93 | 106.20 | 185.13 | 23.20 | 87.833 |
PM315-DH9 | 138.25 | 27.76 | 6.28 | 1.74 | 17.971 | 35.93 | 265.64 | 7.26 | 3.32 | 4.63 | 13.02 | 20.44 | 4.98 | 9.52 | 56.30 | 105.58 | 12.08 | 44.200 |
PM315-DH10 | 150.00 | 22.52 | 4.52 | 1.68 | 13.800 | 28.58 | 231.30 | 6.42 | 4.96 | 6.07 | 12.67 | 29.60 | 7.97 | 8.36 | 40.92 | 77.08 | 8.61 | 31.483 |
PM315-DH11 | 298.00 | 61.46 | 8.93 | 3.46 | 28.220 | 27.60 | 371.90 | 13.31 | 15.56 | 17.20 | 29.05 | 27.89 | 7.23 | 22.77 | 130.80 | 243.47 | 28.46 | 103.513 |
PM315-DH13 | 294.63 | 47.14 | 4.00 | 3.02 | 21.200 | 34.20 | 377.46 | 12.75 | 13.27 | 23.00 | 24.29 | 26.55 | 14.08 | 23.10 | 114.84 | 231.13 | 27.27 | 105.963 |
样品编号 | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | ΣREE | LREE | HREE | LREE/ HREE | δEu | δCe | (La/ Yb)N |
PM315-DH5 | 22.60 | 1.420 | 20.20 | 3.82 | 24.23 | 5.41 | 16.70 | 2.78 | 18.60 | 2.57 | 163.00 | 606.09 | 511.78 | 94.31 | 5.43 | 0.20 | 0.77 | 5.23 |
PM315-DH6 | 23.70 | 1.320 | 18.16 | 3.34 | 21.60 | 4.73 | 14.28 | 2.51 | 15.79 | 2.27 | 134.60 | 596.68 | 514.00 | 82.68 | 6.22 | 0.19 | 0.82 | 6.00 |
PM315-DH7 | 18.90 | 1.147 | 17.11 | 3.49 | 23.05 | 5.30 | 16.47 | 2.71 | 17.26 | 2.46 | 155.25 | 510.26 | 422.41 | 87.85 | 4.81 | 0.19 | 0.87 | 4.41 |
PM315-DH9 | 8.11 | 1.059 | 7.23 | 1.32 | 8.20 | 1.87 | 5.76 | 0.96 | 6.36 | 0.94 | 48.60 | 259.97 | 227.33 | 32.64 | 6.96 | 0.41 | 0.95 | 6.35 |
PM315-DH10 | 6.33 | 0.946 | 6.46 | 1.28 | 7.99 | 1.73 | 5.10 | 0.85 | 5.32 | 0.77 | 48.50 | 194.87 | 165.37 | 29.50 | 5.61 | 0.45 | 0.96 | 5.52 |
PM315-DH11 | 17.50 | 1.835 | 14.04 | 2.25 | 12.11 | 2.56 | 7.57 | 1.27 | 8.12 | 1.14 | 68.58 | 574.64 | 525.58 | 49.06 | 10.71 | 0.35 | 0.93 | 11.55 |
PM315-DH13 | 19.90 | 2.600 | 16.05 | 2.68 | 15.05 | 3.20 | 9.11 | 1.41 | 8.60 | 1.21 | 101.93 | 559.01 | 501.70 | 57.31 | 8.75 | 0.43 | 0.98 | 9.58 |
表2 黏土岩样品主量元素、微量元素分析结果及参数
Table 2 Major and trace element compositions of the claystone samples
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | 烧失量 | 总量 | SiO2/ Al2O3 | TiO2/ Al2O3 | Al2O3 / TiO2 | Al2O3/(Al2O3 +TFe2O3) | Rb |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PM315-DH5 | 55.78 | 0.27 | 22.85 | 1.03 | 0.09 | 0.009 | 3.06 | 1.03 | 0.55 | 6.68 | 0.096 | 8.52 | 99.97 | 2.44 | 0.012 | 84.63 | 0.75 | 226.0 |
PM315-DH6 | 56.65 | 0.28 | 22.74 | 0.94 | 0.09 | 0.010 | 3.02 | 0.59 | 0.51 | 6.72 | 0.066 | 8.32 | 99.94 | 2.49 | 0.012 | 81.21 | 0.77 | 217.8 |
PM315-DH7 | 56.12 | 0.26 | 22.88 | 0.90 | 0.13 | 0.008 | 3.02 | 0.74 | 0.85 | 6.65 | 0.071 | 8.30 | 99.93 | 2.45 | 0.011 | 88.00 | 0.77 | 220.5 |
PM315-DH9 | 78.45 | 0.27 | 11.12 | 1.03 | 0.40 | 0.006 | 1.15 | 0.25 | 0.27 | 3.16 | 0.039 | 3.78 | 99.93 | 7.05 | 0.024 | 41.19 | 0.59 | 91.2 |
PM315-DH10 | 79.89 | 0.27 | 10.18 | 0.74 | 0.45 | 0.012 | 1.15 | 0.37 | 0.33 | 2.92 | 0.085 | 3.56 | 99.96 | 7.85 | 0.027 | 37.70 | 0.65 | 95.4 |
PM315-DH11 | 52.11 | 0.43 | 25.65 | 1.36 | 0.40 | 0.008 | 3.08 | 0.32 | 0.48 | 7.07 | 0.091 | 8.96 | 99.96 | 2.03 | 0.017 | 59.65 | 0.72 | 245.7 |
PM315-DH13 | 56.12 | 0.45 | 22.64 | 1.96 | 0.40 | 0.031 | 2.45 | 0.56 | 0.42 | 6.24 | 0.100 | 8.56 | 99.93 | 2.48 | 0.020 | 50.31 | 0.61 | 191.7 |
样品编号 | Ba | Th | U | Ta | Nb | Sr | Zr | Hf | Co | Ni | Ga | Pb | Cr | Sc | La | Ce | Pr | Nd |
PM315-DH5 | 265.00 | 52.30 | 13.80 | 3.96 | 40.300 | 35.20 | 318.00 | 10.84 | 3.91 | 9.52 | 28.60 | 38.60 | 5.21 | 17.60 | 135.60 | 212.06 | 31.20 | 108.903 |
PM315-DH6 | 283.88 | 56.30 | 13.09 | 4.56 | 41.600 | 26.46 | 317.84 | 10.52 | 5.18 | 8.89 | 28.28 | 37.20 | 5.21 | 17.60 | 132.00 | 217.67 | 29.18 | 110.128 |
PM315-DH7 | 278.63 | 52.90 | 12.75 | 4.30 | 39.312 | 22.37 | 300.44 | 10.35 | 5.50 | 8.88 | 28.70 | 38.22 | 5.37 | 17.93 | 106.20 | 185.13 | 23.20 | 87.833 |
PM315-DH9 | 138.25 | 27.76 | 6.28 | 1.74 | 17.971 | 35.93 | 265.64 | 7.26 | 3.32 | 4.63 | 13.02 | 20.44 | 4.98 | 9.52 | 56.30 | 105.58 | 12.08 | 44.200 |
PM315-DH10 | 150.00 | 22.52 | 4.52 | 1.68 | 13.800 | 28.58 | 231.30 | 6.42 | 4.96 | 6.07 | 12.67 | 29.60 | 7.97 | 8.36 | 40.92 | 77.08 | 8.61 | 31.483 |
PM315-DH11 | 298.00 | 61.46 | 8.93 | 3.46 | 28.220 | 27.60 | 371.90 | 13.31 | 15.56 | 17.20 | 29.05 | 27.89 | 7.23 | 22.77 | 130.80 | 243.47 | 28.46 | 103.513 |
PM315-DH13 | 294.63 | 47.14 | 4.00 | 3.02 | 21.200 | 34.20 | 377.46 | 12.75 | 13.27 | 23.00 | 24.29 | 26.55 | 14.08 | 23.10 | 114.84 | 231.13 | 27.27 | 105.963 |
样品编号 | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | ΣREE | LREE | HREE | LREE/ HREE | δEu | δCe | (La/ Yb)N |
PM315-DH5 | 22.60 | 1.420 | 20.20 | 3.82 | 24.23 | 5.41 | 16.70 | 2.78 | 18.60 | 2.57 | 163.00 | 606.09 | 511.78 | 94.31 | 5.43 | 0.20 | 0.77 | 5.23 |
PM315-DH6 | 23.70 | 1.320 | 18.16 | 3.34 | 21.60 | 4.73 | 14.28 | 2.51 | 15.79 | 2.27 | 134.60 | 596.68 | 514.00 | 82.68 | 6.22 | 0.19 | 0.82 | 6.00 |
PM315-DH7 | 18.90 | 1.147 | 17.11 | 3.49 | 23.05 | 5.30 | 16.47 | 2.71 | 17.26 | 2.46 | 155.25 | 510.26 | 422.41 | 87.85 | 4.81 | 0.19 | 0.87 | 4.41 |
PM315-DH9 | 8.11 | 1.059 | 7.23 | 1.32 | 8.20 | 1.87 | 5.76 | 0.96 | 6.36 | 0.94 | 48.60 | 259.97 | 227.33 | 32.64 | 6.96 | 0.41 | 0.95 | 6.35 |
PM315-DH10 | 6.33 | 0.946 | 6.46 | 1.28 | 7.99 | 1.73 | 5.10 | 0.85 | 5.32 | 0.77 | 48.50 | 194.87 | 165.37 | 29.50 | 5.61 | 0.45 | 0.96 | 5.52 |
PM315-DH11 | 17.50 | 1.835 | 14.04 | 2.25 | 12.11 | 2.56 | 7.57 | 1.27 | 8.12 | 1.14 | 68.58 | 574.64 | 525.58 | 49.06 | 10.71 | 0.35 | 0.93 | 11.55 |
PM315-DH13 | 19.90 | 2.600 | 16.05 | 2.68 | 15.05 | 3.20 | 9.11 | 1.41 | 8.60 | 1.21 | 101.93 | 559.01 | 501.70 | 57.31 | 8.75 | 0.43 | 0.98 | 9.58 |
图6 官坝地区P-T界线黏土岩Nb/Y-SiO2图解((a),底图据参考文献[23])、AFM图解((b),底图据参考文献[24])
Fig.6 Nb/Y-SiO2 ((a), base map modified after reference [23]) and AFM ((b), base map modified after reference [24]) diagrams for the P-T boundary claystone at Guanba
图8 官坝地区P-T界线黏土岩稀土元素球粒陨石标准化配分曲线图(a)、微量元素原始地幔标准化蛛网图(b)(球粒陨石、原始地幔标准化值均引自参考文献[28])
Fig.8 Chondrite-normalized REE patterns (a) and primitive mantle (PM)-normalized multi-element spider diagram (b) for the P-T boundary claystone at Guanba (Chondrite and PM normalizing values are from reference [28])
图9 官坝地区海相二叠系—三叠系界线层与其邻区及浙江长兴煤山海相二叠系—三叠系界线层对比图(据参考文献[16]修改)
Fig.9 Comparison of marine facies of the P-T boundary in the Guanba,Guizhou and its adjacent areas and Changxing, zhejiang (modified after reference [16])
图10 晚二叠世华南地区古地理图((a),据参考文献[50]修改)和岩相古地理图((b),据参考文献[56]修改)
Fig.10 Paleogeographic reconstruction ((a), modified after reference [50]) and lithofacies paleogeographic map ((b), modified after reference [56]) of South China during the Permian-Triassic transition
[1] | 杨遵仪, 殷鸿福, 吴顺宝, 等. 华南二叠—三叠纪过渡期地质事件 [M]. 北京: 地质出版社, 1987: 1-379. |
[2] | 梅冥相, 李仲远. 滇黔桂地区晚古生代至三叠纪层序地层序列及沉积盆地演化[J]. 现代地质, 2004,18(4):555-563. |
[3] | 杨万容, 江纳言. 浙江长兴长兴组和二叠—三叠界面的沉积特征及微相[J]. 中国科学院南京古生物研究所丛刊, 1981(2):113-138. |
[4] | 赖旭龙, 杨逢清, 殷鸿福, 等. 西秦岭地区二叠—三叠系界线地层研究[J]. 现代地质, 1994,8(1):20-26. |
[5] | 王国庆, 夏文臣. 湖北黄石二门二叠系/三叠系界线剖面长兴阶牙形刺分带及有机碳同位素的变化[J]. 现代地质, 2003,17(4):378-386. |
[6] | 殷鸿福, 黄思骥, 张克信, 等. 华南二叠纪—三叠纪之交的火山活动及其对生物绝灭的影响[J]. 地质学报, 1989,63(2):169-180. |
[7] | 蔡厚安, 梁汉东, 李宝芳, 等. 浙江长兴煤山剖面P/T界线附近石膏的发现及古环境模拟[J]. 现代地质, 2007,21(增):12-16. |
[8] | 张凡, 冯庆来, 蒙有信, 等. 广西柳桥深水相二叠系/三叠系界线剖面有机碳同位素地层学对比研究及事件响应[J]. 现代地质, 2006,20(1):42-48. |
[9] | 王尚彦, 殷鸿福. 华南陆相二叠—三叠系界线地层研究新进展[J]. 中国地质, 2001,28(7):16-21. |
[10] | 杨遵仪, 吴顺宝, 殷鸿福, 等. 华南二叠—三叠纪过渡期地质事件 [M]. 北京: 地质出版社, 1991: 1-190. |
[11] | 张素新. 黔桂地区深水相二叠系—三叠系界线附近黏土岩研究[J]. 地质科技情报, 2006,25(1):9-13,26. |
[12] | RETALLACK G J. P/T之交陆生生物危机[J]. 地质科学译丛, 1996,13(3):32-34. |
[13] |
MARC K R, ANDREW D S, ROSALIND V W, et al. 40Ar/ 39Ar dates from the West Siberian Basin: Siberian flood basalt province doubled [J]. Science, 2002,296:1846-1848.
DOI URL PMID |
[14] |
ROLAND M, KENNETH R L. Age and timing of the permian mass extinctions:U/Pb dating of closed-system zircons[J]. Science, 2004,305:1760-1763.
DOI URL PMID |
[15] | 王令占, 涂兵, 赵小明, 等. 湖北利川地区1∶5万区域地质调查成果与主要进展[J]. 华南地质与矿产, 2013,29(3):169-176. |
[16] | 杨逢清, 殷鸿福, 喻建新, 等. 贵州威宁岔河陆相二叠系—三叠系界线地层研究[J]. 中国科学( D辑), 2005,35(6):519-529. |
[17] | 黄虎, 杨江海, 杜远生, 等. 右江盆地上二叠统—中三叠统凝灰岩年龄及其地质意义[J]. 地球科学——中国地质大学学报, 2012,37(1):125-138. |
[18] | 邓煜霖, 郎兴海, 崔志伟, 等. 四川江油马角坝刺林包剖面二叠—三叠系间粘土岩研究[J]. 岩石矿物学杂志, 2018,37(3):417-433. |
[19] | 杨斌, 赵飞, 何碧, 等. 贵州省黔西县官坝地区二叠系—三叠系地质界面碳、氧同位素特征及意义[J]. 物探与化探, 2018,42(5):1081-1088. |
[20] | 贵州省地质矿产局. 息烽幅、毕节幅(1/20万)区域地质测量报告 [R]. 贵阳:贵州省地质矿产局, 1980. |
[21] | 贵州省地质矿产局. 贵州省区域地质志 [M]. 北京: 地质出版社, 2013. |
[22] | 卓皆文, 江新胜, 王剑, 等. 川西新元古界开建桥组底部沉凝灰岩锆石SHRIMP U-Pb年龄及其地质意义[J]. 矿物岩石, 2015,35(1):91-99. |
[23] |
WINCHESTER J A, FLOYD P A. Geochemical discrimination of different magma series and their differentiation products using immobile elements[J]. Chemical Geology, 1977,20:325-343.
DOI URL |
[24] |
IRVINE T N, BARAGAR W R A. A guide to the chemical classification of the common volcanic rocks[J]. Canadian Journal of Earth Sciences, 1971,8:523-548.
DOI URL |
[25] | 田和明, 代世峰, 李大华, 等. 重庆南川晚二叠世凝灰岩的元素地球化学特征[J]. 地质论评, 2014,60(1):169-177. |
[26] | 陈好寿. 同位素地球化学研究 [M]. 杭州: 浙江大学出版社, 1994: 330-333. |
[27] |
ADDISON R, HARRISON R K, LAND D H, et al. Volcanogenic tonsteins from tertiary coal measures,East Kalimantan,Indonesia[J]. International Journal of Coal Geology, 1983,3(1):1-30.
DOI URL |
[28] |
SUN S S, MCDONOUGH W F. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes[J]. Geological Society of London Special Publications, 1989,42(1):313-345.
DOI URL |
[29] |
MCLENNAN S M, TAYLOR S R. Sedimentary rocks and crustal evolution: tectonic setting and secular trends[J]. The Journal of Geology, 1991,99(1):1-21.
DOI URL |
[30] | RUDNICK R L, GAO S. Composition of the continental crust[J]. Treatise on Geochemistry, 2003,3(12):1-64. |
[31] |
WRONKIEWICZ D J, CONDIE K C. Geochemistry and mineralogy of sediments from the Ventersdorp and Transvaal Supergroups,South Africa: Cratonic evolution during the early Proterozoic[J]. Geochimica et Cosmochimica Acta, 1990,54(2):343-354.
DOI URL |
[32] |
HE B, ZHONG Y T, XU Y G, et al. Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian traps or Paleo-Tethys ignimbrite flare-up?[J]. Lithos, 2014,204(3):258-267.
DOI URL |
[33] | 王松, 徐锦龙, 刘道彬, 等. 安徽泾县地区PTB界线粘土岩特征及其年代学意义[J]. 中国锰业, 2018,36(4):62-66. |
[34] | 赵天宇, 冯庆来, 刘嵘, 等. 广西东攀剖面粘土岩的火山岩特征及LA-ICP-MS锆石U-Pb年龄[J]. 地质通报, 2013,32(9):1402-1409. |
[35] | SEPKOSKI J J. A compendium of fossil marine families[J]. Milwaukee Contribution(Biology and Geology), 1982,51:1-125. |
[36] | 谭聪, 袁选俊, 于炳松, 等. 鄂尔多斯盆地南缘上二叠统—中下三叠统地球化学特征及其古气候、古环境指示意义[J]. 现代地质, 2019,33(3):615-628. |
[37] |
BENTON M J, TWITCHETT R J. How to kill(almost)all life: The end-Permian extinction event[J]. Trends in Ecology Evolution, 2003,18:358-365.
DOI URL |
[38] | 王尚彦, 殷鸿福. 滇东黔西陆相二叠纪—三叠纪界线地层研究 [M]. 武汉: 中国地质大学出版社, 2001: 12-74. |
[39] | 周刚, 郑荣才, 罗平, 等. 川东华蓥二叠系—三叠系界线地层地质事件与元素地球化学响应[J]. 地球科学——中国地质大学学报, 2012,37(增):101-110. |
[40] |
KAMO S L, CZAMANSKE G K, AMELIN Y, et al. Rapid eruption of Siberian flood-volcanic rocks and evidence for coincidence with the Permian-Triassic boundary and mass extinction at 251 Ma[J]. Earth and Planetary Science Letters, 2003,214(1/2):75-91.
DOI URL |
[41] |
BECKER L, POREDA R J, HUNT A G, et al. Impact event at the Permian-Triassic boundary:Evidence from extraterrestrial noble gases in fullerenes[J]. Science, 2001,291:1530-1534.
DOI URL PMID |
[42] | WIGNALL P B, TWITCHETT R J. Extent,duration,and nature of the Permian-Triassic superanoxic event[M] //KOEBEL C,MACLEOD K G. Catastrophic Events and Mass Extinctions:Impacts and Beyond. Boulder: Geological Society of America Special Paper, 2002: 395-413. |
[43] |
LIANG H. End-Permian catastrophic event of marine acidificantion by hydrated sulfuric acid:mineralogical evidence from Meishan section of south China[J]. Chinese Science Bulletin, 2002,47(16):1393-1397.
DOI URL |
[44] |
KAY S M, RAMOS V A, MPODOZIS C, et al. Late Paleozoic to Jurassic silicic magmatism at the Gondwana margin: Analogy to the Middle Proterozoic in North America?[J]. Geology, 1989,17(4):324-328.
DOI URL |
[45] |
ROCHA C A C, BASEI M A, NUTMAN A P, et al. 30 million years of Permian volcanism recorded in the Choiyoi igneous province (W Argentina) and their source for younger ash fall deposits in the Parana Basin: SHRIMP U-Pb zircon geochronology evidence[J]. Gondwana Research, 2011,19(2):509-523.
DOI URL |
[46] |
FILDANI A, HODGSON D, FLINT S, et al. U-Pb zircon ages from the southwestern Karoo Basin,South Africa:Implications for the Permian-Triassic boundary: Reply[J]. Geology, 2009,38(8):719-722.
DOI URL |
[47] |
MICHAELSEN P, HENDERSON R A, CROSDALE P J, et al. Age and significance of the Platypus Tuff Bed,a regional reference horizon in the Upper Permian Moranbah Coal Measures,north Bowen Basin[J]. Australian Journal of Earth Sciences, 2015,48(2):183-192.
DOI URL |
[48] |
GREVENITZ P, CARR P, HUTTON A. Origin,alteration and geochemical correlation of Late Permian airfall tuffs in coal measures,Sydney Basin,Australia[J]. International Journal of Coal Geology, 2003,55(1):27-46.
DOI URL |
[49] |
LEPVRIER C, MALUSKI H, TICH V V, et al. The Early Triassic Indosinian orogeny in Vietnam(Truong Son Belt and Kontum Massif):Implications for the geodynamic evolution of Indochina[J]. Tectonophysics, 2004,393(1/4):87-118.
DOI URL |
[50] |
GAO Q L, CHEN Z Q, ZHANG N, et al. Ages,trace elements and Hf-isotopic compositions of zircons from claystones around the Permian-Triassic boundary in the Zunyi Section,South China: Implications for nature and tectonic setting of the volcanism[J]. Journal of Earth Science, 2015,26(6):872-882.
DOI URL |
[51] |
COURTILLOT V E, RENNE P R. On the ages of flood basalt events[J]. Comptes Rendus Geoscience, 2003,335(1):113-140.
DOI URL |
[52] |
GRASBY S E, SANEI H, BEAUCHAMP B. Catastrophic dispersion of coal fly ash into oceans during the latest Permian extinction[J]. Nature, 2011,4(2):104-107.
DOI URL |
[53] |
SANEI H, GRASBY S E, BEAUCHAMP B. Latest Permian mercury anomalies[J]. Geology, 2012,40(1):63-66.
DOI URL |
[54] |
GAO Q L, ZHANG N, XIA W, et al. Origin of volcanic ash beds across the Permian-Triassic boundary,Daxiakou,South China: Petrology and U-Pb age,trace elements and Hf-isotope composition of zircon[J]. Chemical Geology, 2013,360/361(1):41-53.
DOI URL |
[55] |
HONG H, FANG Q, ZHAO L, et al. Weathering and alteration of volcanic ashes in various depositional settings during the Permian-Triassic transition in South China: Mineralogical,elemental and isotopic approaches[J]. Palaeogeography,Palaeoclimatology,Palaeoecology, 2017,486:46-57.
DOI URL |
[56] | XIE S C, PANCOST R D, WANG Y B, et al. Cyanobacterial blooms tied to volcanism during the 5 m.y.Permo-Triassic biotic crisis[J]. Geology, 2010,39(9):248-252. |
[57] |
XU Y G, LUO Z Y, HUANG X L, et al. Zircon U-Pb and Hf isotope constraints on crustal melting associated with the Emeishan mantle plume[J]. Geochimica et Cosmochimica Acta, 2008,72(13):3084-3104.
DOI URL |
[58] | 朱江, 张招崇, 侯通, 等. 贵州盘县峨眉山玄武岩系顶部凝灰岩LA-ICP-MS锆石U-Pb年龄: 对峨眉山大火成岩省与生物大规模灭绝关系的约束[J]. 岩石学报, 2011,27(9):2743-2751. |
[59] |
SPEARS D A, KANARIS S R. A geochemical and mineralogical investigation of some British and other European tonsteins[J]. Sedimentology, 1979,26:407-425.
DOI URL |
[60] |
ZHOU Y P, REN Y L, BOHOR B F. Origin and distribution of tonsteins in Late Permian coal seams of southwestern China[J]. International Journal of Coal Geology, 1982,2:49-77.
DOI URL |
[61] |
LOPEZ J M G, BAULUZ B, NIETO C F, et al. Factors controlling the trace-element distribution in fine-grained rocks: the Albian kaolinite-rich deposits of the Oliete Basin(NE Spain)[J]. Chemical Geology, 2005,214:1-19.
DOI URL |
[62] |
ZHOU Y P, BOHOR B F, REN Y L. Trace element geochemistry of altered volcanic ash layers(tonsteins)in Late Permian coal-bearing formations of eastern Yunnan and western Guizhou Provinces,China[J]. International Journal of Coal Geology, 2000,44:305-324.
DOI URL |
[63] |
MURRAY R W. Rare earth elements as indicators of different marine depositional environment in chert and shale[J]. Geology, 1990,18:268-271.
DOI URL |
[64] | CONDIE K C. Mantle Plumes and Their Record in Earth History [M]. Cambridge: Cambridge University Press, 2001: 306. |
[65] |
GAO S, LUO T H, ZHANG B R. Chemical composition of the continental crust as revealed by studies in East China[J]. Geochimica et Cosmochimica Acta, 1998,62:1959-1975.
DOI URL |
[66] | FARMER G L. Continental basaltic rocks[M] // HOLLAND H D,TUREKIAN K K. Treatise on Geochemistry. Amsterdam: Elsevier, 2004: 85-121. |
[67] | KELEMEN P B, HANGHOJ K, GREENE A R. One view of the geochemistry of subduction-related magmatic arcs, with an emphasis on primitive andesite and lower crust[M]// HOLLAND H D, TUREKZAN K K. Treatise on Geochemistry. Amsterdam: Elsevier, 2003: 593-659. |
[68] | WHITE R V. Earth’s biggest‘whodunnit’: unraveling the clues in the case of the end-Permian mass extinction[J]. Philosophical Transactions of the Royal Society of London, 2002,360:2963-2985. |
[69] |
ZHANG X H, ZHANG H F, TANG Y J, et al. Geochemistry of Permian bimodal volcanic rocks from central Inner Mongolia, North China: Implication for tectonic setting and Phanerozoic continental growth in Central Asian Orogenic Belt[J]. Chemical Geology, 2008,249:262-281.
DOI URL |
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