The discovery of the Early Triassic A-type granite in Gadasu, Jarud Banner, Inner Mongolia, and its geological significance

WANG Zhisheng; MA Guoxiang; LU Tianjun; WANG Xiaoqi; SUN Mingkun; WANG Hongzhi; WANG Yadong

2018 Vol. 37, No. 9

Article Contents

Article navigation > Geological Bulletin of China > 2018 > 37(9): 1722-1730

Next Article Previous Article

WANG Zhisheng, MA Guoxiang, LU Tianjun, WANG Xiaoqi, SUN Mingkun, WANG Hongzhi, WANG Yadong. The discovery of the Early Triassic A-type granite in Gadasu, Jarud Banner, Inner Mongolia, and its geological significance[J]. Geological Bulletin of China, 2018, 37(9): 1722-1730.

Citation:

WANG Zhisheng, MA Guoxiang, LU Tianjun, WANG Xiaoqi, SUN Mingkun, WANG Hongzhi, WANG Yadong. The discovery of the Early Triassic A-type granite in Gadasu, Jarud Banner, Inner Mongolia, and its geological significance[J]. Geological Bulletin of China, 2018, 37(9): 1722-1730.

The discovery of the Early Triassic A-type granite in Gadasu, Jarud Banner, Inner Mongolia, and its geological significance

No. 243 Geological Party, China National Nuclear Corporation, Chifeng 024000, Inner Mongolia, China

Received Date: 20 January 2018

Revised Date: 08 March 2018

Publish Date: 15 September 2018

Abstract

Abstract

Gadasu A-type granite has the miarolitic structure and graphic and creep textures as well as chemical characteristics of rich silica and alumina and poor iron, thus belonging to high potassium calcalkaline series aluminum. Light rare earth curve is included to the right. The rock has rich Ga, Nb, U, poor Ba, Sr, Ti, 10⁴Ga/Al ratios of 2.64~3.18, Y/Nb ratios of 1.72~2.03, and Nb/Ta ratios of 5.99~5.99, indicating A2 type granite. Zircon U-Pb emplacement age shows that the rock mass has the age of 249.0±2.7 Ma. The authors thus infer that the granite was formed in the environment of late stage stretching and pull-apart of the Xing-Meng orogenic belt after the closure of the paleo-Asia Ocean in Triassic.
- A-type miarolitic granites /
- rock geochemistry /
- zircon U-Pb age /
- post-orogenic phase /
- extensional environment

FullText(HTML)

References

[1]	洪大卫, 郭文岐, 李戈晶, 等.福建沿海晶洞花岗岩带的岩石学和演化[M].北京:科学技术出版社, 1987. Google Scholar
[2]	曾令君.燕山地区和福建魁岐A型花岗岩的成因及演化[D].中国科学院研究生院(广州地球化学研究所)博士学位论文, 2016. Google Scholar
[3]	王蓉嵘, 刘家远.福建魁岐晶洞碱性花岗岩特征及成因[J].桂林冶金地质学院学报, 1993, (1):14-23. Google Scholar
[4]	单强, 曾乔松, 李建康, 等.福建魁岐晶洞花岗岩锆石U-Pb年代学及其地球化学研究[J].岩石学报, 2014, 30(4):1155-1167. Google Scholar
[5]	施光海, 苗来成, 张福勤, 等.内蒙古锡林浩特A型花岗岩的时代及区域构造意义[J].科学通报, 2004, (4):384-389. doi: 10.3321/j.issn:0023-074X.2004.04.015 CrossRef Google Scholar
[6]	吴新伟, 李世超, 江斌, 等.内蒙古济沁河林场晶洞花岗岩锆石U-Pb年龄及地球化学特征[J].地质与资源, 2017, 26(3):234-244, 309. Google Scholar
[7]	吴新伟, 李世超, 郭威, 等.内蒙古扎兰屯西部晶洞花岗岩锆石U-Pb年龄及其构造意义[J].地质论评, 2017, 63(S1):285-286. Google Scholar
[8]	周建波, 曾维顺, 曹嘉麟, 等.中国东北地区的构造格局与演化:从500Ma到180Ma[J].吉林大学学报(地球科学版), 2012, 42(5):1298-1316, 1329. Google Scholar
[9]	王成文, 金巍, 张兴洲, 等.东北及邻区晚古生代大地构造属性新认识[J].地层学杂志, 2008, (2):119-136. doi: 10.3969/j.issn.0253-4959.2008.02.001 CrossRef Google Scholar
[10]	韩国卿, 刘永江, Franz N, 等.松辽盆地西缘边界断裂带中北段尼尔基L型构造岩构造年代学及其构造意义[J].岩石学报, 2014, 30(7):1922-1934. Google Scholar
[11]	徐备, 陈斌.内蒙古北部华北板块与西伯利亚板块之间中古生代造山带的结构及演化[J].中国科学(D辑), 1997, 27(3):227-232. Google Scholar
[12]	刘昌实, 陈小明, 陈培荣, 等. A型岩套的分类、判别标志和成因[J].高校地质学报, 2003, 9(4):573-591. doi: 10.3969/j.issn.1006-7493.2003.04.011 CrossRef Google Scholar
[13]	苏玉平, 唐红峰. A型花岗岩的微量元素地球化学[J].矿物岩石地球化学通报, 2005, 24(3):245-251. doi: 10.3969/j.issn.1007-2802.2005.03.012 CrossRef Google Scholar
[14]	代晓光.内蒙古东部新胜屯地区晚侏罗世A型花岗岩特征与成因[J].地质学刊, 2016, 40(2):197-204. doi: 10.3969/j.issn.1674-3636.2016.02.197 CrossRef Google Scholar
[15]	李晓海, 姚玉来, 李文博, 等.内蒙古扎鲁特旗三叠纪黑云母二长花岗岩特征[J].地质与资源, 2016, 25(1):11-16 doi: 10.3969/j.issn.1671-1947.2016.01.002 CrossRef Google Scholar
[16]	徐博文, 郗爱华, 葛玉辉, 等.内蒙古赤峰地区晚古生代A型花岗岩锆石U-Pb年龄及构造意义[J].地质学报, 2015, 89(1):58-69. Google Scholar
[17]	杨钢, 肖龙, 高睿, 等.内蒙古阿尔山地区中生代A型花岗岩LAICP-MS锆石U-Pb年龄、地球化学特征及其构造意义[J].地质通报, 2014, 33(5):649-660. doi: 10.3969/j.issn.1671-2552.2014.05.006 CrossRef Google Scholar
[18]	孙德有, 吴福元, 李惠民, 等.小兴安岭西北部造山后A型花岗岩的时代及与索伦山-贺根山-扎赉特碰撞拼合带东延的关系[J].科学通报, 2000, (20):2217-2222. doi: 10.3321/j.issn:0023-074X.2000.20.019 CrossRef Google Scholar
[19]	范春方, 陈培荣.赣南陂头A型花岗岩的地质地球化学特征及其形成的构造环境[J].地球化学, 2002, 29(4):358-366. Google Scholar
[20]	洪大卫, 黄怀曾, 肖宜君, 等.内蒙古中部二叠纪碱性花岗岩及其地球动力学意义[J].地质学报, 1994, 68(3):219-230. doi: 10.3321/j.issn:0001-5717.1994.03.001 CrossRef Google Scholar
[21]	李培忠, 于津生.山海关晶碱性洞花岗岩氢、氧同位素组成[J].科学通报, 1989, 35(1):51-52. Google Scholar
[22]	邱检生, 王德滋, 蟹泽聪史, 等.福建沿海铝质A型花岗岩的地球化学及岩石成因[J].地球化学, 2000, 29(4):313-322. Google Scholar
[23]	魏春生, 郑永飞, 赵子福.中国东部A型花岗岩形成时代及物质来源的Nd-Sr-O同位素地球化学制约[J].岩石学报, 2001, 17(1):95-111. Google Scholar
[24]	Whalen J B, Currie K, Chappel B W. A-type granite:geochemical characteristics, discrimination and petrogenesis[J]. Contributions to Mineralogy and Petrology, 1987, 95:407-419. doi: 10.1007/BF00402202 CrossRef Google Scholar
[25]	Collins W J, Beams S D, White A J R, et al. Nature and origin of Atype granites with particular reference to southeastern Australia[J]. Contuibutions to Mineralogy and Petrology, 1982, 80(2):189-200. doi: 10.1007/BF00374895 CrossRef Google Scholar
[26]	Eby G N. Chemicalsubdivisition of the A-type granitolds:Petrogenetic and implications[J]. Geology, 1992, 20(7):641-644. doi: 10.1130/0091-7613(1992)020<0641:CSOTAT>2.3.CO;2 CrossRef Google Scholar
[27]	洪大卫, 王式洸, 韩宝福, 等.碱性花岗岩的构造环境分类及其鉴别标志[J].中国科学(B辑), 1995, (4):418-426. Google Scholar
[28]	袁洪林, 吴福原, 高山.东北地区新生代侵入体的锆石激光探针U-Pb年龄测定与稀土元素成分分析[J].科学通报, 2003, 48(14):1511-1520. doi: 10.3321/j.issn:0023-074X.2003.14.008 CrossRef Google Scholar
[29]	徐平, 关鸿, 孙敏, 等.激光探针等离子质谱用于锆石U-Pb年龄的分析和分析方法的进一步探讨[J].地球化学, 1999, 28(2):136-144. doi: 10.3321/j.issn:0379-1726.1999.02.004 CrossRef Google Scholar
[30]	阎欣, 储著银, 孙敏, 等.激光探针等离子质谱锆石微区²⁰⁷Pb/²⁰⁶Pb测定尝试[J].科学通报, 1998, 43(19):2101-2105. doi: 10.3321/j.issn:0023-074X.1998.19.021 CrossRef Google Scholar
[31]	Green Ⅱ H W. R heological regime of the upper mantle beneath the Taiwan strait and its tectonic significance[J]. Acta Geologica Sinica, 1995, (3):259-271, 340. Google Scholar
[32]	刘红涛, 刘世华, 刘建明, 等.华北克拉通北缘中生代高锶花岗岩类:地球化学与源区性质[J].岩石学报, 2002, 18(3):257-274. Google Scholar
[33]	林强, 葛文春, 吴福元, 等.大兴安岭中生代花岗岩类的地球化学[J].岩石学报, 2004, 20(3):403-412. Google Scholar
[34]	葛文春, 吴福元, 周长勇, 等.大兴安岭中段乌兰浩特地区中生代花岗岩锆石U-Pb年龄及其构造意义[J].岩石学报, 2005, 21(3):749-762. Google Scholar
[35]	① 辽宁省第二区域地质测量队. 1: 20万扎晋特旗福和阿鲁科尔沁旗幅区域地质调查报告. 1972. Google Scholar
[36]	② 沈阳地质调查中心.内蒙古1: 20万扎鲁特旗幅区域地质调查报告. 2014. Google Scholar