| 滇西南昌宁-孟连带南段群沉积特征及其构造古地理意义──兼论临沧地体的性质 |
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| 引用本文： | 贾进华.滇西南昌宁-孟连带南段群沉积特征及其构造古地理意义──兼论临沧地体的性质[J].沉积与特提斯地质,1994(4). |
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| 作者姓名： | 贾进华 |
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| 作者单位： | 中国矿业大学 |
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| 摘 要： | 南段群位于滇西南昌宁－孟连带东区，为一套厚度巨大的砂岩与泥板岩互层的类复理石沉积类型，是由非正常滑塌浊流、正常浊流和碎屑流沉积作用形成的特殊沉积物，其沉积构造背景为被动大陆边缘的深水陆坡环境，物源区为临沧地体。临沧地体在早石炭世至早二叠世具有亲冈瓦纳性质，晚二叠世前增生到思茅地块西缘。
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| 关 键 词： | 滇西南，南段群，沉积特征，构造古地理，临沧地体 |
SEDIMENTARY CHARACTERISTICS AND TECTONIC PALAEOGEOGRAPHY OF THE NANDUAN GROUP IN THE CHANGNING-MENGLIAN ZONE,SOUTHWESTERN YUNNAN,WITH DISCUSSIONS ON THE FEATURES OF THE LINCANG TERRANE |
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| Jia Jinhua.SEDIMENTARY CHARACTERISTICS AND TECTONIC PALAEOGEOGRAPHY OF THE NANDUAN GROUP IN THE CHANGNING-MENGLIAN ZONE,SOUTHWESTERN YUNNAN,WITH DISCUSSIONS ON THE FEATURES OF THE LINCANG TERRANE[J].Sedimentary Geology and Tethyan Geology,1994(4). |
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| Authors: | Jia Jinhua |
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| Institution: | China University of Mining Science and Technology |
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| Abstract: | The Nanduan Group, located in the east of the Changning-Menglian zone in southwestern Yunnan,is a thick series of terrigenous elastic flyschoid deposits with the couplets of sandstones and muddy slates consisting of nonnormal fluxoturbidites,normal turbidites and debris flow sediments. The tectonic settingof the Nanduan Group represents the deepwater continental slope environment on the passive margins. Its provenance came from the Lincang terrane which was an isolated Gondwana-affinity terrane during Early Carboniferous to Early Permian and accreted toward the western margin of the Simao block before Late Permian. |
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| Keywords: | southwestern Yunnan Nanduan Group sedimentary characteristics tectonic palaeogeography Lincang terrane |
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