| 确定南澜沧江缝合带的火山岩地球化学证据 |
| |
| 引用本文： | 朱勤文,张双全,谭 劲.确定南澜沧江缝合带的火山岩地球化学证据[J].岩石矿物学杂志,1998,17(4):296-307. |
| |
| 作者姓名： | 朱勤文 张双全 谭 劲 |
| |
| 作者单位： | 中国地质大学,武汉,430074 |
| |
| 摘 要： | 本文着重根据火山岩的主量元素、稀土元素和微量元素特征厘定了我国西南“三江”地区昌宁－孟连带Ｃ１—Ｐ２火山岩和南澜沧江带Ｐ—Ｔ３火山岩的构造－岩浆类型。昌宁－孟连火山岩带为洋脊／准洋脊型－洋岛型玄武岩、蛇绿混杂岩带，代表澜沧江洋或古特提斯的残迹；南澜沧江火山岩带是一个陆缘火山弧带，是澜沧江洋盆向东俯冲消减、碰撞以及陆内俯冲过程的产物。两带火山岩是成对分布的古特提斯缝合带的产物。
|
| 关 键 词： | 晚古生代和三叠纪火山岩 构造－岩浆类型 滇西南 |
Geochemical Evidence of Volcanic Rocks for Determining the South Lancangjiang Suture Zone |
| |
| Zhu Qinwen,Zhang Shuangquan,Tan Jin.Geochemical Evidence of Volcanic Rocks for Determining the South Lancangjiang Suture Zone[J].Acta Petrologica Et Mineralogica,1998,17(4):296-307. |
| |
| Authors: | Zhu Qinwen Zhang Shuangquan Tan Jin |
| |
| Abstract: | The present paper deals with volcanic rocks of the Changning-Menglian belt (C 1-P 2) and the south Lancangjiang belt (P 1-T 3) in "Sanjiang" region, Southwest China. Based On geological and petrological characteristics of these volcanic rocks, the authors studied their major elements, REE and trace element and, furthermore, determined their tectonomagmatic types. Volcanic rocks along the Changning-Menglian belt are basalts and ophiolite complex of oceanic ridge paraoceanic ridge type, which represent remnants of the Lancangjiang ocean. The South Lancangjiang volcanic belt is a composite volcanic arc resulting from eastward subducting and collision of the Lancangjiang ocean. The two volcanic belts, distributed in pairs, are products of the Lancangjiang oceanic suture zone. |
| |
| Keywords: | late Paleozoic and Triassic volcanic rocks tectonomagmatic type Southwestern Yunnan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩石矿物学杂志》浏览原始摘要信息 |
| 点击此处可从《岩石矿物学杂志》下载免费的PDF全文 |
|
