右江盆地早期演化:来自桂西靖西地区碱性基性-超基性岩地球化学研究的启示
发布时间:2021-04-10 04:19
对靖西地区出露的晚古生代基性-超基性岩进行了全岩主量、微量元素等地球化学研究,结果表明:基性岩主要为辉绿岩,超基性岩则为苦橄岩;基性岩具有较低的SiO2(51.34%~53.17%)和较高的MgO(4.67%~6.12%)含量,(K2O+Na2O)在5.03%~8.06%,具有典型碱性玄武岩特征;超基性岩则具有更低的SiO2(39.76%)和极高的MgO(23.97%),二者均落入碱性玄武岩系列。基性-超基性岩∑REE在(45.47~128.95)×10-6,(La/Yb)N值在6.67~10.75,δEu值为0.96~1.08,稀土特征总体显示为轻稀土相对富集,重稀土相对亏损的右倾型式,具有与OIB相似的配分趋势,指示源区相对富集;基性-超基性岩不相容元素含量整体偏低,略亏损高场强元素(HREE、 Nb、 Ti等),指示源区部分熔融程度较低。结合前人研究及岩石沉积背景特征,认为靖西基性-超基性岩为右江盆地早期演化的产物,形成于局部拉张的构造环境,与裂谷作...
【文章来源】:桂林理工大学学报. 2020,40(03)北大核心
【文章页数】:6 页
【部分图文】:
右江盆地地质简图(a,据文献[3]修改)及靖西基性岩分布简图(b,据1:20万靖西幅地质图修改)
图1 右江盆地地质简图(a,据文献[3]修改)及靖西基性岩分布简图(b,据1:20万靖西幅地质图修改)表1 靖西基性-超基性岩全岩主量元素(wB/%) 和微量元素(wB/10-6)分析结果Table 1 Major(wB/%) and trace elements(wB/10-6) composition of basic and ultrabasic rocks in Jingxi area 成分 JX-06 JX-07 JX-08 JX-10 JX-22 JX-24 JX-28 SiO2 53.17 53.08 52.37 51.34 52.79 53.15 39.76 TiO2 1.42 1.42 1.50 1.75 1.91 1.86 0.75 Al2O3 15.97 15.18 15.31 15.36 15.26 16.15 6.15 TFe2O3 9.01 9.36 9.46 9.67 9.98 8.76 15.76 MnO 0.10 0.10 0.13 0.16 0.13 0.08 0.19 MgO 5.01 5.85 6.12 5.87 4.76 4.67 23.93 CaO 5.87 6.64 5.58 4.85 5.09 5.01 3.45 Na2O 5.56 4.16 5.83 3.09 4.33 5.70 0.14 K2O 0.92 0.87 0.32 4.97 2.62 1.53 0.69 P2O5 0.24 0.23 0.25 0.40 0.32 0.41 0.16 LOI 2.14 2.63 2.54 2.58 2.50 2.54 9.01 Total 99.41 99.52 99.41 100.04 99.69 99.86 99.99 Mg# 56.46 59.27 60.11 58.60 52.67 55.41 77.97 Sc 19.16 17.81 22.62 21.75 23.15 21.04 10.86 Ti 8 248.9 7 671.5 8 455.0 10 071.9 10 876.0 10 521.8 4 052.8 V 139.3 150.1 156.2 168.6 199.1 153.5 74.23 Cr 159.2 209.5 239.9 107.3 22.87 91.97 819.4 Mn 788.8 750.9 918.6 1 224.0 1 014.0 597.6 1 441.6 Co 31.74 33.71 34.81 29.06 33.00 29.08 114.9 Ni 61.32 72.04 83.23 46.71 25.53 29.57 915.8 Cu 31.58 25.10 32.96 53.80 36.01 27.56 78.92 Zn 102.2 97.20 124.2 103.7 143.2 111.5 96.69 Ga 20.31 20.16 19.55 19.01 21.45 21.36 8.21 Ge 2.39 2.51 2.96 2.75 2.78 2.61 3.54 Rb 8.80 5.69 3.12 50.61 42.57 10.90 25.57 Sr 277.1 387.2 246.7 222.6 350.9 270.7 65.66 Y 20.54 16.54 18.50 24.56 23.93 22.47 7.34 Zr 124.1 103.4 119.4 173.7 162.6 158.7 54.67 Nb 19.56 15.80 19.03 31.24 26.38 30.01 11.71 Cs 0.15 0.16 0.18 1.37 1.22 0.12 4.79
TAS图解
【参考文献】:
期刊论文
[1]古特提斯与峨眉山地幔柱相互作用:来自桂西那坡地区基性岩铂族元素地球化学特征[J]. 招传,刘希军,时毓,刘磊,李政林,潘罗忠,胡荣国,王葆华,张治国,丁姗姗. 桂林理工大学学报. 2018(04)
[2]桂西隆林-西林地区辉绿岩成因:峨眉山地幔柱外带岩浆作用的启示[J]. 邓发亮,姚野,刘希军,李政林,张付胜,时毓,付伟,廖帅. 桂林理工大学学报. 2017(02)
[3]New Zircon U-Pb Age of the Babu Ophiolites in Southeast Yunnan,China and Constrains of Plate Subduction Time[J]. HUANG Hu,DU Yuansheng,YANG Jianghai,YU Wenchao. Acta Geologica Sinica(English Edition). 2017(03)
[4]桂西那坡基性岩地球化学:峨眉山地幔柱与古特提斯俯冲相互作用的证据[J]. 陈雪峰,刘希军,许继峰,时毓,李政林,梁琼丹,黄文龙,廖帅,吴伟男. 大地构造与成矿学. 2016(03)
[5]右江盆地基性岩的地球化学演化特征及其区域构造意义[J]. 李政林,刘希军,许继峰,康志强,时毓,黄文龙,陈雪峰,吴伟男,梁琼丹,姚野. 桂林理工大学学报. 2015(04)
[6]桂西北玉凤、巴马晚二叠世辉绿岩年代学、地球化学特征及成因研究[J]. 张晓静,肖加飞. 矿物岩石地球化学通报. 2014(02)
[7]Depositional chemistry of chert during late Paleozoic from western Guangxi and its implication for the tectonic evolution of the Youjiang Basin[J]. HUANG Hu,DU YuanSheng,HUANG ZhiQiang,YANG JiangHai,HUANG HongWei,XIE ChunXia,HU LiSha. Science China(Earth Sciences). 2013(03)
[8]晚古生代—中三叠世右江盆地的格局和转换[J]. 杜远生,黄虎,杨江海,黄宏伟,陶平,黄志强,胡丽沙,谢春霞. 地质论评. 2013(01)
[9]我国大火成岩省和地幔柱研究进展与展望[J]. 徐义刚,何斌,罗震宇,刘海泉. 矿物岩石地球化学通报. 2013(01)
[10]Geochemistry of Permian Mafic Igneous Rocks from the Napo-Qinzhou Tectonic Belt in Southwest Guangxi, Southwest China: Implications for Arc-Back Arc Basin Magmatic Evolution[J]. QIN Xiaofeng 1, 2* , WANG Zongqi 2 , ZHANG Yingli 2 , PAN Luozhong 3 , HU Guiang 3 and ZHOU Fusheng 3 1 College of Earth Science, Guilin University of Technology, Guilin, Guangxi 541004, China 2 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 3 Guangxi Institute of Regional Geological Survey, Guilin, Guangxi 541003, China. Acta Geologica Sinica(English Edition). 2012(05)
博士论文
[1]右江盆地晚古生代—中三叠世盆地演化[D]. 黄虎.中国地质大学 2013
本文编号:3128945
【文章来源】:桂林理工大学学报. 2020,40(03)北大核心
【文章页数】:6 页
【部分图文】:
右江盆地地质简图(a,据文献[3]修改)及靖西基性岩分布简图(b,据1:20万靖西幅地质图修改)
图1 右江盆地地质简图(a,据文献[3]修改)及靖西基性岩分布简图(b,据1:20万靖西幅地质图修改)表1 靖西基性-超基性岩全岩主量元素(wB/%) 和微量元素(wB/10-6)分析结果Table 1 Major(wB/%) and trace elements(wB/10-6) composition of basic and ultrabasic rocks in Jingxi area 成分 JX-06 JX-07 JX-08 JX-10 JX-22 JX-24 JX-28 SiO2 53.17 53.08 52.37 51.34 52.79 53.15 39.76 TiO2 1.42 1.42 1.50 1.75 1.91 1.86 0.75 Al2O3 15.97 15.18 15.31 15.36 15.26 16.15 6.15 TFe2O3 9.01 9.36 9.46 9.67 9.98 8.76 15.76 MnO 0.10 0.10 0.13 0.16 0.13 0.08 0.19 MgO 5.01 5.85 6.12 5.87 4.76 4.67 23.93 CaO 5.87 6.64 5.58 4.85 5.09 5.01 3.45 Na2O 5.56 4.16 5.83 3.09 4.33 5.70 0.14 K2O 0.92 0.87 0.32 4.97 2.62 1.53 0.69 P2O5 0.24 0.23 0.25 0.40 0.32 0.41 0.16 LOI 2.14 2.63 2.54 2.58 2.50 2.54 9.01 Total 99.41 99.52 99.41 100.04 99.69 99.86 99.99 Mg# 56.46 59.27 60.11 58.60 52.67 55.41 77.97 Sc 19.16 17.81 22.62 21.75 23.15 21.04 10.86 Ti 8 248.9 7 671.5 8 455.0 10 071.9 10 876.0 10 521.8 4 052.8 V 139.3 150.1 156.2 168.6 199.1 153.5 74.23 Cr 159.2 209.5 239.9 107.3 22.87 91.97 819.4 Mn 788.8 750.9 918.6 1 224.0 1 014.0 597.6 1 441.6 Co 31.74 33.71 34.81 29.06 33.00 29.08 114.9 Ni 61.32 72.04 83.23 46.71 25.53 29.57 915.8 Cu 31.58 25.10 32.96 53.80 36.01 27.56 78.92 Zn 102.2 97.20 124.2 103.7 143.2 111.5 96.69 Ga 20.31 20.16 19.55 19.01 21.45 21.36 8.21 Ge 2.39 2.51 2.96 2.75 2.78 2.61 3.54 Rb 8.80 5.69 3.12 50.61 42.57 10.90 25.57 Sr 277.1 387.2 246.7 222.6 350.9 270.7 65.66 Y 20.54 16.54 18.50 24.56 23.93 22.47 7.34 Zr 124.1 103.4 119.4 173.7 162.6 158.7 54.67 Nb 19.56 15.80 19.03 31.24 26.38 30.01 11.71 Cs 0.15 0.16 0.18 1.37 1.22 0.12 4.79
TAS图解
【参考文献】:
期刊论文
[1]古特提斯与峨眉山地幔柱相互作用:来自桂西那坡地区基性岩铂族元素地球化学特征[J]. 招传,刘希军,时毓,刘磊,李政林,潘罗忠,胡荣国,王葆华,张治国,丁姗姗. 桂林理工大学学报. 2018(04)
[2]桂西隆林-西林地区辉绿岩成因:峨眉山地幔柱外带岩浆作用的启示[J]. 邓发亮,姚野,刘希军,李政林,张付胜,时毓,付伟,廖帅. 桂林理工大学学报. 2017(02)
[3]New Zircon U-Pb Age of the Babu Ophiolites in Southeast Yunnan,China and Constrains of Plate Subduction Time[J]. HUANG Hu,DU Yuansheng,YANG Jianghai,YU Wenchao. Acta Geologica Sinica(English Edition). 2017(03)
[4]桂西那坡基性岩地球化学:峨眉山地幔柱与古特提斯俯冲相互作用的证据[J]. 陈雪峰,刘希军,许继峰,时毓,李政林,梁琼丹,黄文龙,廖帅,吴伟男. 大地构造与成矿学. 2016(03)
[5]右江盆地基性岩的地球化学演化特征及其区域构造意义[J]. 李政林,刘希军,许继峰,康志强,时毓,黄文龙,陈雪峰,吴伟男,梁琼丹,姚野. 桂林理工大学学报. 2015(04)
[6]桂西北玉凤、巴马晚二叠世辉绿岩年代学、地球化学特征及成因研究[J]. 张晓静,肖加飞. 矿物岩石地球化学通报. 2014(02)
[7]Depositional chemistry of chert during late Paleozoic from western Guangxi and its implication for the tectonic evolution of the Youjiang Basin[J]. HUANG Hu,DU YuanSheng,HUANG ZhiQiang,YANG JiangHai,HUANG HongWei,XIE ChunXia,HU LiSha. Science China(Earth Sciences). 2013(03)
[8]晚古生代—中三叠世右江盆地的格局和转换[J]. 杜远生,黄虎,杨江海,黄宏伟,陶平,黄志强,胡丽沙,谢春霞. 地质论评. 2013(01)
[9]我国大火成岩省和地幔柱研究进展与展望[J]. 徐义刚,何斌,罗震宇,刘海泉. 矿物岩石地球化学通报. 2013(01)
[10]Geochemistry of Permian Mafic Igneous Rocks from the Napo-Qinzhou Tectonic Belt in Southwest Guangxi, Southwest China: Implications for Arc-Back Arc Basin Magmatic Evolution[J]. QIN Xiaofeng 1, 2* , WANG Zongqi 2 , ZHANG Yingli 2 , PAN Luozhong 3 , HU Guiang 3 and ZHOU Fusheng 3 1 College of Earth Science, Guilin University of Technology, Guilin, Guangxi 541004, China 2 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 3 Guangxi Institute of Regional Geological Survey, Guilin, Guangxi 541003, China. Acta Geologica Sinica(English Edition). 2012(05)
博士论文
[1]右江盆地晚古生代—中三叠世盆地演化[D]. 黄虎.中国地质大学 2013
本文编号:3128945
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