辽西建平县义县组火山岩形成构造环境的地球化学鉴别

doi:-

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (7): 1012-1016.DOI: -

辽西建平县义县组火山岩形成构造环境的地球化学鉴别

彭艳东¹，黄菲²，邢德和³，张志斌³

(1.东北大学秦皇岛分校，河北秦皇岛066004；2.东北大学资源与土木工程学院，辽宁沈阳110819；3.沈阳地质矿产研究所，辽宁沈阳110034)

收稿日期:2013-01-03 修回日期:2013-01-03 出版日期:2013-07-15 发布日期:2013-12-31
通讯作者: 彭艳东
作者简介:彭艳东(1963-)，男，河北唐山人，东北大学教授，博士；黄菲(1959-)，女，江苏扬州人，东北大学教授，博士.
基金资助:
国家自然科学基金资助项目(41272062)；国土资源大调查项目(1212011120662).

Geochemical Discrimination of Tectonic Environments of Volcanic Rocks of Yixian Formation in Jianping of Western Liaoning

PENG Yandong¹， HUANG Fei²， XING Dehe³， ZHANG Zhibin³

1. Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 3. Shenyang Institute of Geology and Mineral Resources， Shenyang 110034， China.

Received:2013-01-03 Revised:2013-01-03 Online:2013-07-15 Published:2013-12-31
Contact: HUANG Fei
About author:-
Supported by:
-

摘要/Abstract

摘要： 对辽西建平县平庄-马厂盆地的火山岩进行了岩石学、地球化学、同位素年代学研究.结果表明，火山岩属白垩纪.义县组火山作用可分为2个亚旋回.火山岩主要为流纹岩类、粗面岩类和粗安岩类.义县旋回火山岩属高钾钙碱性岩石系列.火山岩具有高SiO2，Al2O3，K2O，Na2O和低MgO，TiO2的特征.火山岩富集大离子亲石元素(LILE)K，Rb，Sr，Zr，Ba，Pb，Li等，高场强元素(HFSE)Nb，Ti，P及相容元素Co，Ni，Cr，V亏损.火山岩为轻稀土富集型，总体显示弱负铕异常、无铈异常.对火山岩形成的构造环境的地球化学判别，表明义县组火山岩成岩物质主要来源于下地壳的部分熔融，岩浆在上升过程中受到了一定程度的上地壳物质的混染.火山岩形成于板内岩石圈不均匀伸展作用环境，具有大陆板内造山带火山岩的基本特征.

关键词: 建平县, 义县组, 地球化学判别, 岩石圈伸展作用, 板内造山带

Abstract: Petrology， geochemistry， isotope geochronology of the volcanic rocks distributed in PingzhuangMachang basin of Jianping of western Liaoning were studied. The results showed that the volcanic rock is the Cretaceous. The volcanism of Yixian formation may be divided into two subcycles. The volcanic rocks mainly consist of rhyolites， trachyte and trachyandesites. The volcanic rocks belong to the highK calcalkaline magmatic series. The volcanic rocks are characterized by components of high SiO2， Al2O3， K2O and Na2O， and comparatively low MgO and TiO2. The volcanic rocks are obviously enriched in large ion lithophile elements (K， Rb， Sr， Zr， Ba， Pb and Li)， and depleted in high fieldstrength element (Nb， Ti， P)as well as compatible elements (Co， Ni， Cr and V). The volcanic rocks is rich in LREE. There is a slight negative Eu anomaly and no Ce anomaly. A detailed geochemical discrimination of the selected elements allowed us to identify that the volcanic rocks of Yixian formation mainly derived from the partial melting of lower crust materials， but also has been contaminated by upper crustal materials during its ascent process in some degree. The volcanic rocks of Yixian volcanic cycle were generated in response to lithosphere inhomogeneous extension in the continental intraplate orogenic belt. They have the basic characteristics of continental intraplate volcanic rocks.

Key words: Jianping country, Yixian formation, geochemical discrimination, lithosphere extension, intraplate organic belt

中图分类号:

P591

彭艳东，黄菲，邢德和，张志斌. 辽西建平县义县组火山岩形成构造环境的地球化学鉴别[J]. 东北大学学报(自然科学版), 2013, 34(7): 1012-1016.

PENG Yandong， HUANG Fei， XING Dehe， ZHANG Zhibin. Geochemical Discrimination of Tectonic Environments of Volcanic Rocks of Yixian Formation in Jianping of Western Liaoning[J]. Journal of Northeastern University, 2013, 34(7): 1012-1016.

参考文献

[1] 张宏，张旗.辽西北票四合屯地区义县组高镁火山岩的稀土、微量元素特征及启示［J］.中国稀土学报，2005，23(6):736/741.(Zhang Hong，Zhang Qi.Rare earth，trace element characteristics of highMg volcanic rocks of Yixian formation in Sihetun west Liaoning province and its apocalypse［J］.Journal of the Chinese of Society Rare Earths ，2005，23(6):736/741.)
[2] Swisher C C，Wang Y Q，Wang X L，et al.40Ar/39Ar dating of the lower Yixian formation Liaoning province，northeastern China［J］.Chinese Science Bulletin，1998，43(sup):125.
[3] 李伍平，李献华，路凤香，等.辽西早白垩世义县组火山岩的地质特征及其构造背景［J］.岩石学报，2002，18(2):193/204.(Li Wuping，Li Xianhua，Lu Fengxiang，et al.Geological characteristics and its setting for volcanic rocks of early Cretaceous Yixian formation in western Liaoning province，eastern China［J］.Acta Petrologica Sinica，2002，18(2):193/204.)
[4] Niu B G，He Z J，Song B，et al.SHRIMP geocronology of volcanics of the Zhangjiakou and Yixian formation northern Hebei province，with a discussion on the age of the Xing’anling group of the great hinggan mountains and volcanic strata of the southeastern coastral area of China［J］.Acta Geologicl Sinica:English Edition，2004，78(6):1214/1228.
[5] 马寅生，崔盛芹，曾庆利，等.燕山地区燕山期的挤压与伸展作用［J］.地质通报，2002，4/5:218/223.(Ma Yinsheng，Cui Shengqin，Zeng Qingli，et al.Yanshanina compression and extension in the Yanshan area［J］.Geological Bulletin of China，2002，4/5:218/223.)
[6] Le Maitre R W.Igneous rocks:a classification and glossary of terms［M］.2nd ed.Cambridge:Cambridge University Press，2002.
[7] Ruiz J，Patchett P J，OrtegaGutierrez F.Proterozoic and phanerozoic basement terranes of Mexico from Nd isotopic studies［J］.Geological Society of America Bulletin，1988，100:274/281.
[8] 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，1984，25:956/983.
[9] Hooper P R，Bailey D G，Holder G A M.Tertiary calcalkaline magmatism assoeiated with lithospheric extension in the pacific northwest.［J］.Journal of Geophysical Research，1995，100(B7):10303/10319.

辽西建平县义县组火山岩形成构造环境的地球化学鉴别

Geochemical Discrimination of Tectonic Environments of Volcanic Rocks of Yixian Formation in Jianping of Western Liaoning

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 4

编辑推荐

Metrics

本文评价

[1]	王铁晖，巩恩普，陈晓红，黄文韬. 辽西早白垩世义县组大康堡层纹泥的古环境意义[J]. 东北大学学报:自然科学版, 2018, 39(3): 394-398.
[2]	张志斌，巩恩普，赵明鹏，王海娇. 辽宁省黑水镇地区中生代断陷盆地分析[J]. 东北大学学报:自然科学版, 2015, 36(8): 1179-1183.
[3]	彭艳东;黄菲;邢德和;吕安才;. 辽西朝阳地区张家口组火山岩地球化学特征及构造背景[J]. 东北大学学报(自然科学版), 2012, 33(9): 1331-1335.
[4]	彭艳东;邢德和;卞雄飞;宋维民;. 赤峰四家子盆地张家口组火山岩成因研究[J]. 东北大学学报(自然科学版), 2011, 32(8): 1190-1194.