PETROGENESIS AND TECTONIC IMPLICATIONS OF TWO TYPES EARLY SILURIAN GRANITES IN EAST JUNGGAR

XIAO Dian; LIAO Qun-an; WANG Liang-yu; ZHAO Hao; ZHA Yan-hong; ZHAO Hong-wei; YIN Ting-wang; TIAN Jin-ming; LIU Hong-fei

Volume 22 Issue 4

Dec. 2016

Turn off MathJax

Article Contents

Article Navigation > Journal of Geomechanics > 2016 > 22(4): 1049-1061

XIAO Dian, LIAO Qun-an, WANG Liang-yu, et al., 2016. PETROGENESIS AND TECTONIC IMPLICATIONS OF TWO TYPES EARLY SILURIAN GRANITES IN EAST JUNGGAR. Journal of Geomechanics, 22 (4): 1049-1061.

Citation:

XIAO Dian, LIAO Qun-an, WANG Liang-yu, et al., 2016. PETROGENESIS AND TECTONIC IMPLICATIONS OF TWO TYPES EARLY SILURIAN GRANITES IN EAST JUNGGAR. Journal of Geomechanics, 22 (4): 1049-1061.

Citation:

XIAO Dian, LIAO Qun-an, WANG Liang-yu, et al., 2016. PETROGENESIS AND TECTONIC IMPLICATIONS OF TWO TYPES EARLY SILURIAN GRANITES IN EAST JUNGGAR. Journal of Geomechanics, 22 (4): 1049-1061.

PDF( 4346 KB)

PETROGENESIS AND TECTONIC IMPLICATIONS OF TWO TYPES EARLY SILURIAN GRANITES IN EAST JUNGGAR

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Sichuan Geological Survey, Chengdu 610081, China
3.
No. 243 Geological Party of Nuclear Industry, CNNC, Chifeng 024006, Inner Mongolia, China

More Information

Received: 2016-09-16
Published: 2016-12-28

Abstract

Abstract

The early Silurian monzogranite and syenogranite are located in the western section of Harlik Mountain with a NWW-trending, which intrude into the Ordovician Tashui Formation (O_1-2t). The LA-ICP-MS zircon U-Pb dating shows their emplacement ages are 438.8±2.3 Ma~435.8±3.1 Ma. The rocks have high contents of silicon (SiO₂=73.0~77.8%)and potassium (K₂O=3.31~4.26%), and low contents of magnesium (MgO=0.03~0.59%), with moderate aluminum saturation index (A/CNK=1.02~1.08), which show that the rocks are high-K calc-alkaline, weakly peraluminium series. Monzogranites exhibit strongly fractionated REE patterns with moderate negative Eu anomalies, and they are depleted in Nb, Ta, Ti, P, but enriched in Rb, Ba, K, showing notable fractionated Ⅰ-type granitoids with mafic lower continental crust as a potential magma source. Syenogranites show remarkably depletion of Eu, P, Ti and Sr, and enrichment of Rb, K, Zr and Hf, showing A-type granites affinity, whose magma source maybe the dehydrated felsic upper continental crust. Combined with the stratigraphic unconformity in this region, we propose that the East Junggar is in a post-collisional setting rather than arc-related setting during the early Silurian. The upwelling asthenosphere provided enhanced heat flux and triggered the partial melting of the juvenile crust, and resulted in the generation of various Silurian post-collisional granites in East Jungga.
- Harlik,
- Silurian,
- A-type granite,
- post-collision

FullText(HTML)

References(41)

References

[1]	Badarch G, Dickson Cunningham W, Windley B F. A new terrane subdivision for Mongolia:Implications for the Phanerozoic crustal growth of Central Asia[J]. Journal of Asian Earth Sciences, 2002, 21(1):87~110. doi: 10.1016/S1367-9120(02)00017-2
[2]	Windley B F, Alexeiev D, Xiao W, et al. Tectonic models for accretion of the Central Asian Orogenic Belt[J]. Journal of the Geological Society, 2007, 164(1):31~47. doi: 10.1144/0016-76492006-022
[3]	Xiao W J, Han C, Yuan C, et al. Middle Cambrian to Permian subduction-related accretionary orogenesis of Northern Xinjiang, NW China:Implications for the tectonic evolution of central Asia[J]. Journal of Asian Earth Sciences, 2008, 32(2/4):102~117.
[4]	Xu Q, Ji J, Zhao L, et al. Tectonic evolution and continental crust growth of Northern Xinjiang in northwestern China:Remnant ocean model[J]. Earth-Science Reviews, 2013, 126:178~205. doi: 10.1016/j.earscirev.2013.08.005
[5]	顾连兴, 胡受奚, 于春水, 等.论博格达俯冲撕裂型裂谷的形成与演化[J].岩石学报, 2001(04):585~597. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200104008.htm GU Lian-xing, HU Shou-xi, YU Chun-shui, et al. Initation and evolution of the Bogda subduction-torn-type rift[J]. Acia Petrologica Sinica, 2001(4):585~597. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200104008.htm
[6]	冯益民, 朱宝清, 杨军录, 等.东天山大地构造及演化——1:50万东天山大地构造图简要说明[J].新疆地质, 2002, (4):309~314. http://www.cnki.com.cn/Article/CJFDTOTAL-XJDI200204004.htm FENG Yi-min, ZHU Bao-qing, YANG Jun-lu, et al. Tectonics and evolution of the eastern Tianshan Mountains:A brief introduction to tectonic map (1:500000) of the eastern Tianshan Mountains of Xinjiang[J]. Xinjiang Geology, 2002, (4):309~314. http://www.cnki.com.cn/Article/CJFDTOTAL-XJDI200204004.htm
[7]	李锦轶.新疆东部新元古代晚期和古生代构造格局及其演变[J].地质论评, 2004, 50(3):304~322. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200403015.htm LI Jin-yi. Late Neoproterozoic and Paleozoic tectonic framework and evolution of eastern Xinjiang, NW China[J]. Geological Review, 2004, 50(3):304~322. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200403015.htm
[8]	Xiao W J, Zhang L C, Qin K Z, et al. Paleozoic accretionary and collisional tectonics of the Eastern Tianshan (China):Implications for the continental growth of Central Asia[J]. American Journal of Science, 2004, 304(4):370~395. doi: 10.2475/ajs.304.4.370
[9]	李锦轶, 王克卓, 孙桂华, 等.东天山吐哈盆地南缘古生代活动陆缘残片:中亚地区古亚洲洋板块俯冲的地质记录[J].岩石学报, 2006, 22(5):1087~1102. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200605004.htm LI Jin-yi, WANG Ke-zhuo, SUN Gui-hua, et al. Paleozoic active margin slices in the southern Turfan-Hami basin:Geological records of subduction of the Paleo-Asian Ocean plate in central Asian regions[J]. Acta Petrologica Sinica, 2006, 22(5):1087~1102. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200605004.htm
[10]	曹福根, 涂其军, 张晓梅, 等.哈尔里克山早古生代岩浆弧的初步确定——来自塔水河一带花岗质岩体锆石SHRIMP U-Pb测年的证据[J].地质通报, 2006, 25(8):923~927. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200608004.htm CAO Fu-gen, TU Qi-jun, ZHANG Xiao-mei, et al. Preliminary determination of the Early Paleozoic magmatic arc in the Karlik Mountains, East Tianshan, Xinjiang, China:Evidence from zircon SHRIMP U-Pb dating of granite bodies in the Tashuihe area[J]. Geological Bulletin of China, 2006, 25(8):923~927. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200608004.htm
[11]	郭华春, 钟莉, 李丽群.哈尔里克山口门子地区石英闪长岩锆石SHRIMP U-Pb测年及其地质意义[J].地质通报, 2006, 25(8):928~931. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200608005.htm GUO Hua-chun, ZHONG Li, LI Li-Qun. Ziron SHRIMP U-Pb dating of quartz diorite in the Koumenzi area, Karlik Mountains, East Tianshan, Xinjiang, China, and its geological significance[J]. Geological Bulletin of China, 2006, 25(8):928~931. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200608005.htm
[12]	马星华, 陈斌, 王超, 等.早古生代古亚洲洋俯冲作用:来自新疆哈尔里克侵入岩的锆石U-Pb年代学、岩石地球化学和Sr-Nd同位素证据[J].岩石学报, 2015, 31(1):89~104. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201501007.htm MA Xing-hua, CHEN Bin, WANG Chao, et al. East Paleozoic subduction of the Paleo-Asian Ocan:Zircon U-Pb geochronological, geochemical and Sr-Nd isotopic evidence from the Harlik pluton, Xinjiang[J]. Acta Petrologica Sinica, 2015, 31(1):89~104. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201501007.htm
[13]	徐学义, 李荣社, 陈隽璐, 等.新疆北部古生代构造演化的几点认识[J].岩石学报, 2014, 30(6):1521~1534. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201406001.htm XU Xue-yi, LI Rong-she, CHEN Jun-lu, et al. New constrains on the Paleozoic tectonic evolution of the northern Xinjiang area[J]. Acta Petrologica Sinica, 2014, 30(6):1521~1534. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201406001.htm
[14]	董连慧, 朱志新, 屈迅, 等.新疆蛇绿岩带的分布、特征及研究新进展[J].岩石学报, 2010, 26(10):2894~2904. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201010002.htm DONG Lian-hui, Zhu Zhi-xin, QU Xun, et al. Spatial distribution geological features and latest progress of the main ophiolite zones in Xinjiang NW-China[J]. Acta Petrologica Sinica, 2010, 26(10):2894~2904. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201010002.htm
[15]	吴元保, 郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报, 2004, 49(16):1589~1604. doi: 10.3321/j.issn:0023-074X.2004.16.002 WU Yuan-bao, ZHENG Yong-fei. Gensis of zircon and its constraints on the interpretation of U-Pb age[J]. Chinese Science Bulletin, 2004, 49(16):1589~1604. doi: 10.3321/j.issn:0023-074X.2004.16.002
[16]	Peccerillo A, Taylor S R. Geochemistry of eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey[J]. Contributions to Mineralogy and Petrology, 1976, 58(1):63~81. doi: 10.1007/BF00384745
[17]	Maniar P D, Piccoli P M. Tectonic discrimination of granitoids[J]. Geological Society of America Bulletin, 1989, 101(5):635~643. doi: 10.1130/0016-7606(1989)101<0635:TDOG>2.3.CO;2
[18]	邱检生, 肖娥, 胡建, 等.福建北东沿海高分异Ⅰ型花岗岩的成因:锆石U-Pb年代学、地球化学和Nd-Hf同位素制约[J].岩石学报, 2008, 24(11):2468~2484. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200811003.htm QIU Jian-sheng, XIAO E, HU Jian, et al. Petrogenesis of fractionated Ⅰ-type granites in the coastal area of northeastern Fujian Province:Constraints from zircon U-Pb geochronology, geochemistry, and Nd-Hf isotopes[J]. Acta Petrologica Sinica, 2008, 24(11):2468~2484. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200811003.htm
[19]	Taylor S R, McLennan S M. The continental crust:Its composition and evolution[M]. London:Blackwell Scientific, 1986.
[20]	Sun S S, McDonough W F. Chemical and isotopic systematics of oceanic basalt:Implications for mantle composition and processes[M]. London:Geological Society, 1989.
[21]	吴福元, 李献华, 杨进辉, 等.花岗岩成因研究的若干问题[J].岩石学报, 2007, 23(6):1217~1238. http://www.cnki.com.cn/Article/CJFDTOTAL-HBDK199001002.htm WU Fu-yuan, LI Xian-hua, YANG Jin-hui, et al. Discussions on the petrogenesis of granites[J]. Acta Petrologica Sinica, 2007, 23(6):1217~1238. http://www.cnki.com.cn/Article/CJFDTOTAL-HBDK199001002.htm
[22]	李献华, 李武显, 李正祥.再论南岭燕山早期花岗岩的成因类型与构造意义[J].科学通报, 2007, 52(9):981~991. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200709000.htm LI Xian-hua, LI Wu-xian, LI Zheng-xiang.[J]. Re-discussion on genesis type and tectonic significance of Early Yanshanian granite in Nanling[J]. Chinese Science Bulletin, 2007, 52(9):981~991. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200709000.htm
[23]	Holtz F, Pichavant M, Barbey P, et al. Effects of H₂O on liquidus phase relations in the haplogranite system at 2 and 5 kbar[J]. American Mineralogist, 1992, 77(11/12):1223~1241.
[24]	Whalen J B, Currie K L, Chappell B W. A-type granites:geochemical characteristics, discrimination and petrogenesis[J]. Contributions to Mineralogy and Petrology, 1987, 95(4):407~419. doi: 10.1007/BF00402202
[25]	邱检生, 胡建, 王孝磊, 等.广东河源白石冈岩体:一个高分异的Ⅰ型花岗岩[J].地质学报, 2005, 79(4):503~514. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXE200504010.htm QIU Jian-sheng, HU Jian, WANG Xiao-lei, et al. The Baishigang Pluton in Heyuan, Guangdong Province:A highly fractionated Ⅰ-type granite[J]. Acta Geologica Sinica, 2005, 79(4):503~514. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXE200504010.htm
[26]	Watson E B, Harrison T M. Zircon saturation revisited:temperature and composition effects in a variety of crustal magma types[J]. Earth and Planetary Science Letters, 1983, 64(2):295~304. doi: 10.1016/0012-821X(83)90211-X
[27]	Miller C F, McDowell S M, Mapes R W. Hot and cold granites Implications of zircon saturation temperatures and preservation of inheritance[J]. Geology, 2003, 31(6):529~532. doi: 10.1130/0091-7613(2003)031<0529:HACGIO>2.0.CO;2
[28]	Patiño Douce A E. Generation of metaluminous A-type granites by low-pressure melting of calc-alkaline granitoids[J]. Geology, 1997, 25(8):743. doi: 10.1130/0091-7613(1997)025<0743:GOMATG>2.3.CO;2
[29]	Castillo Paterno R.埃达克岩成因回顾[J].科学通报, 2006, 51(6):617~627. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200606000.htm Castillo Paterno R. Review of the genesis of adakites[J]. Chinese Science Bulletin, 2006, 51(6):617~627. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200606000.htm
[30]	Rapp R P, Watson E B. Dehydration Melting of Metabasalt at 8~32 kbar:Implications for Continental Growth and Crust-Mantle Recycling[J]. Journal of Petrology, 1995, 36(4):891~931. doi: 10.1093/petrology/36.4.891
[31]	Conrad W K, NichollsI I A, Wall V J. Water-Saturated and-Undersaturated Melting of Metaluminous and Peraluminous Crustal Compositions at 10 kb:Evidence for the Origin of Silicic Magmas in the Taupo Volcanic Zone, New Zealand, and Other Occurrences[J]. Journal of Petrology, 1988, 29(4):765~803. doi: 10.1093/petrology/29.4.765
[32]	Küster D, Harms U. Post-collisional potassic granitoids from the southern and northwestern parts of the Late Neoproterozoic East African Orogen:a review[J]. Lithos, 1998, 45(1/4):177~195.
[33]	Eby G N. Chemical subdivision of the A-type granitoids:Petrogenetic and tectonic implications[J]. Geology, 1992, 20(7):641. doi: 10.1130/0091-7613(1992)020<0641:CSOTAT>2.3.CO;2
[34]	Pearce J A, Harris N B W, Tindle A G. Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks[J]. Journal of Petrology, 1984, 25(4):956~983. doi: 10.1093/petrology/25.4.956
[35]	韩宝福.后碰撞花岗岩类的多样性及其构造环境判别的复杂性[J].地学前缘, 2007, 14(3):64~72. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200703007.htm HAN Bao-fu. Diverse post-collisional granitoids and their tectonic setting discrimination[J]. Earth Science Frontiers, 2007, 14(3):64~72. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200703007.htm
[36]	Xiao W J, Windley B F, Yuan C, et al. Paleozoic multiple subduction-accretion processes of the southern Altaids[J]. American Journal of Science, 2009, 309(3):221~270. doi: 10.2475/03.2009.02
[37]	董连慧, 屈迅, 赵同阳, 等.新疆北阿尔泰造山带早古生代花岗岩类侵入序列及其构造意义[J].岩石学报, 2012, 28(8):2307~2316. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201208002.htm DONG Lian-hui, QU Xun, ZHAO Tong-yang, et al. Magmatic sequence of Early Palaeozoic granitic intrusions and its tectonic implications in north Altay orogeny, Xinjiang[J]. 2012, 28(8):2307~2316. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201208002.htm
[38]	简平, 刘敦一, 张旗, 等.蛇绿岩及蛇绿岩中浅色岩的SHRIMP U-Pb测年[J].地学前缘, 2003, 10(4):439~456. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDJ200311002036.htm JIAN Ping, LIU Dun-yi, ZHANG Qi, et al. SHRIMP dating of ophiolite and leucocratic rocks within ophiolite[J]. Earth Science Frontiers, 2003, 10(4):439~456. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDJ200311002036.htm
[39]	程裕淇.中国地层典:志留系[M].北京:地质出版社, 1998. CHENG Yu-qi. Stratigraphic lexicon of China:Silurian[M]. Beijing:Geological Publishing House, 1998.
[40]	李亚萍, 李锦轶, 孙桂华, 等.新疆东准噶尔早泥盆世早期花岗岩的确定及其地质意义[J].地质通报, 2009, 28(12):1885~1893. doi: 10.3969/j.issn.1671-2552.2009.12.020 LI Ya-ping, LI Jin-yi, SUN Gui-hua, et al. Determination of the Early Devonian granite in East Junggar, Xinjiang, China and its geological implications[J]. Geological Bulletin of China, 2009, 28(12):1885~1893. doi: 10.3969/j.issn.1671-2552.2009.12.020
[41]	徐芹芹, 赵磊, 牛宝贵.新疆东准噶尔纸房地区早古生代花岗岩的确定及其地质意义[J].地质力学学报, 2015, 21(4):502~516. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20150406&flag=1 XU Qin-qin, ZHAO Lei, NIU Bao-gui. Determination of the early Paleozoic granite in Zhifang area, east Junggar, Xingjiang and its geological implications[J]. Journal of Geomechanics, 2015, 21(4):502~516. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20150406&flag=1