[1]梁志录,王云斌,刘宏伦,等.白银市乌金峡一带志留纪中酸性
侵入岩特征及构造意义[J].地球科学与环境学报,2008,30(03):240.
LIANG Zhi-lu,WANG Yun-bin,LIU Hong-lun,et al.Chracteristic and Tectonic Significance of Intermediate-Acid
Intrusive Rock in Wujinxia Area of Baiyin City[J].Journal of Earth Sciences and Environment,2008,30(03):240.
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白银市乌金峡一带志留纪中酸性
侵入岩特征及构造意义(PDF)
LIANG Zhi-lu,WANG Yun-bin,LIU Hong-lun,et al.Chracteristic and Tectonic Significance of Intermediate-Acid Intrusive Rock in Wujinxia Area of Baiyin City[J].Journal of Earth Sciences and Environment,2008,30(03):240.
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- 卷:
- 第30卷
- 期数:
- 2008年第03期
- 页码:
- 240
- 栏目:
- 基础地质与矿产地质
- 出版日期:
- 2008-09-20
文章信息/Info
- Title:
- Chracteristic and Tectonic Significance of Intermediate-Acid Intrusive Rock in Wujinxia Area of Baiyin City
- 作者:
- 梁志录1; 王云斌2; 刘宏伦3; 康胜松4
- 1.甘肃地质矿产勘查局第三勘查院,甘肃兰州730000;2.西北有色地质研究院,陕西西安710054; 3.云南地矿资源股份有限公司,云南昆明671000;4.长安大学地球科学与资源学院,陕西西安710054
- Author(s):
- LIANG Zhi-lu1; WANG Yun-bin2; LIU Hong-lun3; KANG Sheng-song4
- 1+M45. Third Institute o f Exploration, Gansu Geologic and Mineral Bureau, Lanzhou 730000, Gansu, China; 2. Northwestern Non ferrous Metals Geological Institute, Xian 710054, Shaanxi, China; 3. Yunnan Geology and Mineral Resources Limited Company, Kunming, 671000, Yunnan, China; 4. School o f Earth Sciences and Resources, Changan University, Xian 710054, Shaanxi, China
- Keywords:
- Wujinxia area; Baiyin City; intermediate-acid intrusive; Central Qilian massif; geological characteristic; tectonic significance; geochemistry rock; Gansu Province
- 分类号:
- P534.45
- DOI:
- -
- 文献标志码:
- A
- 摘要:
- 通过对甘肃省白银市乌金峡一带中酸性侵入体的地质学、岩石化学、地球化学等研究,发现该侵入体高 w(Na2O),低w(MgO)、w(TFeO)、w(Al2O3)、w(K2O),w(TiO2)、w(MgO)、w(MnO)、w(TFeO)、w(CaO)、w(K2O) 与w(SiO2)负相关,w(Na2O)与w(SiO2)正相关;轻、重稀土都有分异,但轻稀土更明显,且轻稀土富集,δ(Eu)轻度正 异常—亏损,大离子亲石元素Ba、Th、Sr富集,Rb、Li亏损,属同源岩浆演化的产物。岩浆结晶温度为700℃～ 890℃。形成时代大致为奥陶纪中晚期,属于岛弧构造环境,为中祁连地块和北祁连洋间相互作用的结果。
- Abstract:
- Through the geological, petrochemical and geochemical research on intermediate acid intrusive rock located in Wujinxia area of Baiyin City in Gansu Province, it is found that w(Na2O)are high, meanwhile, w(MgO), w(TFeO), w(Al2O3)and w(K2O)are low,w(TiO2),w(MgO),w(MnO),w(TFeO),w(CaO),w(K2O)and w(SiO2)are negative correlated, w(Na2O) and w(SiO2) are positive correlated, LREE and HREE are differentiated, LREEs are more obviously enriched,andδ(Eu)are depleted, large ion lithophile elements such as Ba, Th,Sr are enriched, Rb and Li are poor. The temperature of magmatic crystallization is from 700 ℃ to 890 ℃ . The intrusinve body was the product of comagmatic evolution during the mutual interaction of Central Qilian massif and Qilian ocean in the island-arc tectonic environment of middle-to later Ordovician period.
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备注/Memo
- 备注/Memo:
-
收稿日期:2007-10-20
作者简介:梁志录(1972-),男,甘肃临洮人,工程师,从事地质矿产勘查规划研究。E-mail:liangzhilu@126.com
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