Zircon  U-Pb Dating of Several Selected Alkali-rich Porphyries from the Jinshajiang-Ailaoshan Fault Zone and Geological Significance

Abstract

Abstract:

By using LA-ICP-MS zircon U-Pb dating,the ages of four alkali-rich porphyries from the Jinshajiang-Ailaoshan fault zone have been determined. The results show that the age of the Jianchuan hornblende syenite porphyry is (37.6±2.2) Ma, the age of Yaoan biotite hornblende syenite porphyry is (31.8±2.6)Ma and that of Jiudingshan porphyritic biotite adamellite is (3793±082) Ma. There are,however,two ages for Yaoan biotite monzonitic porphyry, (36.86±0.63)Ma and (40.41±0.24)Ma,respectively. The formation ages of these four porphyries are consistent with the peak timing of formation of the Cenozoic alkalirich prophyries in western Yunnan, and all in the time frame of the post-collision magmatism of the Tibetan Plateau It is believed that the emplacement of the porphyries was a magmatic response to India-Eurasia collision.

Key words: alkali-rich porphyry, Jinshajiang-Ailaoshan fault zone, LA-ICP-MS zircon U-Pb dating, Cenozoic, magmatism

CLC Number:

P588.1

LI Yong,MO Xuan-xue,YU Xue-hui,HUANG Xing-kai， HE Wen-yan. Zircon U-Pb Dating of Several Selected Alkali-rich Porphyries from the Jinshajiang-Ailaoshan Fault Zone and Geological Significance [J]. Geoscience, 2011, 25(2): 189-200.

References

［1］莫宣学，路凤香，沈上越,等. 三江特提斯火山作用与成矿[M]. 北京:地质出版社，1993：1-267.
［2］涂光炽. 华南两个富碱侵入岩带的初步研究[M]// 中国科学院贵阳地球化学研究所. 中国科学院贵阳地球化学研究所年报. 贵阳：贵阳人民出版社，1982:127-129.
[3] 涂光炽. 关于富碱侵入岩[J]. 矿产与地质，1989，3(3)：1-4.
[4] 谢应雯，张玉泉，涂光炽. 哀牢山—金沙江富碱侵入岩带地球化学与成矿专属性初步研究[J]. 昆明工学院院报，1984(4):1-17.
[5] 吕伯西，王增，张能德，等.三江地区花岗岩类及其成矿专属性[M]. 北京：地质出版社，1993：1-328.
[6] 张玉泉，谢应雯. 哀牢山—金沙江富碱侵入岩年代学和Nd、Sr同位素特征[J]. 中国科学:D辑，1997，27(4)：289-293.
[7] 邓万明，黄萱，钟大赉. 滇西富碱斑岩及其与板内变形的关系[J]. 中国科学:D辑，1998，28(2)：111-117.
[8] 王登红，杨建民，薛春纪，等. 西南三江—大渡河地区喜马拉雅金成矿作用的同位素年代学证据[M]// 陈毓川. 喜马拉雅期内生成矿作用研究. 北京:地质出版社，2001：84-

87.
[9] 黄小龙，徐义刚，杨启军，等. 滇西晚始新世高镁富钾火山岩的地球化学特征及其岩石成岩机制探讨[J]. 地球化学，2007，36(2)：120-138.
[10] 曾普胜，莫宣学，喻学惠，等. 滇西富碱斑岩带的Nd、Sr、Pb同位素特征及其挤压走滑背景[J]. 岩石矿物学杂志，2002，21(3)：231-241.
[11] 钱祥贵，吕伯西. 滇西三江地区新生代碱性火山岩岩石学特征及成因[J]. 云南地质，2000，19(2)：152-170.
[12] 莫宣学，赵志丹，喻学惠，等. 青藏高原新生代碰撞—后碰撞火成岩[M]. 北京：地质出版社，2009：1-396.
[13] Ludwig K R. Isoplot/Ex, A Geochronological Toolkit for Microsoft Excel.version 300[M]. Berkeley：Berkeley Geochronology Center，2003，4：1-70.
[14] Andersen T. Correction of common lead in UPb analyses that do not report 204Pb[J]. Chemical Geology，2002,192：59-79.
[15] Hoskin P W O，Black L P. Metamorphic zircon formation by solidstate recrystallization of protolith igneous zircon[J]. Journal of Metamorphic Geology，

2000，18：423-439.
[16] Wetherill G W. An interpretation of the Rhodesia and Witwatersrand age patterns[J]. Geochimica et Cosmochimica Acta,1956,9:290-292.
[17] Ding Lin, Kapp Paul, Wan Xiaoqiao. PaleoceneEocene record of ophiolite obduction and initial IndiaAsia collision, south central Tibet[J]. Tectonics,

2005, 24:1-18.
[18] 刘红英，夏斌，张玉泉. 云南马头湾透辉石花岗斑岩锆石SHRIMP UPb年龄研究[J]. 地球学报，2003，24(6)：552-554.
[19] 梁华英，谢应雯，张玉泉，等. 富钾碱性岩体形成演化对铜矿成矿制约——以马厂箐铜矿为例[J]. 自然科学进展，2004，14(1)：116-120.
[20] 林清茶，夏斌，张玉泉. 哀牢山—金沙江碱性岩带南段云南金平八一村钾质碱性花岗岩锆石SHRIMP UPb年龄[J]. 地质通报，2005,24(5)：420-423.
[21] 夏斌，林清茶，张玉泉. 哀牢山—金沙江岩带透辉石花岗岩锆石 SHRIMP UPb年龄及地质意义——以玉召块、马头湾和十里村岩体为例[J]. 大地构造与成矿学，2005，29

(1)：35-43.
[22] 万哨凯，夏斌，张玉泉. 老君山正长岩锆石SHRIMP定年[J]. 大地构造与成矿学，2005,29(4)：522-526.
[23] 徐受民. 滇西北衙金矿床的成矿模式及与新生代富碱斑岩的关系[D]. 北京：中国地质大学,2007：1-127.
[24] 夏斌，耿庆荣，张玉泉. 滇西鹤庆地区六合透辉石正长斑岩锆石SHRIMP UPb年龄及其意义[J]. 地质通报，2007，26(6)：692-697.
[25] Liang Huaying, Campbell I H, Allen C M, et al. The age of the potassic alkaline igneous rocks along the AilaoshanRed River shear zone: implications

for the onset age of leftlateral shearing[J]. Journal of Geology, 2007,115:231-242.
[26] 肖晓牛，喻学惠，莫宣学，等. 滇西洱海北部北衙地区富碱斑岩的地球化学、锆石SHRIMP UPb定年及成因[J]. 地质通报，2009，28(12)：1786-1803.
[27] 黄波，梁华英，莫济海，等. 金平铜厂铜钼矿床赋矿岩体锆石LAICPMS UPb年龄及意义[J]. 大地构造与成矿学，2009，33(4)：598-602.
[28] 祝向平. 云南哈播斑岩型铜(-钼-金)矿床地质特征与成矿作用研究[D]. 北京：中国地质大学，2010：1-150.
[29] 曾普胜，侯增谦，高永峰，等. 印度—亚洲碰撞带东段喜马拉雅期铜-钼-金矿床 ReOs年龄及成矿作用[J]. 地质论评, 2006,52(1) : 72-84.
[30] Dewey J F，Cande S，Pitman W C. Tectonic evolution of the India/Eurasia Collision Zone[J]. Eclogae Geologicae Helvetiae，1989，82(3)：717-734.
[31] 钟大赉，丁林，刘福田，等. 造山带岩石层多向层架构造及其对新生代岩浆活动制约——以三江及邻区为例[J]. 中国科学：D辑，2000，30(增刊)：1-9.
[32] 张连生，钟大赉. 从红河剪切带走滑运动看东亚大陆新生代构造[J]. 地质科学，1996，31(4):327-340.

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Zircon U-Pb Dating of Several Selected Alkali-rich Porphyries from the Jinshajiang-Ailaoshan Fault Zone and Geological Significance

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