| 黔北大竹园地区铝土矿含矿岩系沉积环境及形成机制 |
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| 引用本文： | 刘平,廖友常,张雅静.黔北大竹园地区铝土矿含矿岩系沉积环境及形成机制[J].中国地质,2016(6):2173-2191. |
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| 作者姓名： | 刘平 廖友常 张雅静 |
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| 作者单位： | 贵州省地质矿产勘查开发局106地质大队, 贵州 遵义 563000,贵州省地质矿产勘查开发局106地质大队, 贵州 遵义 563000,贵州省地质矿产勘查开发局106地质大队, 贵州 遵义 563000 |
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| 摘 要： | 黔北大竹园地区铝土矿含矿岩系的岩石地层为上石炭统大竹园组,是在晚石炭世马平期渝鄂海湾南西侧近海湖泊群中的濯水湖沉积形成的。大竹园组下段沉积时期,距渝鄂海湾的海岸线较近,濯水湖面积较大(约480 km~2),水位较高,属永久性低能浅水湖泊,以化学沉积作用为主,沉积了大面积的绿泥石岩、绿泥石黏土岩、铁质黏土岩以及少量鲕绿泥石铁矿和赤铁矿。大竹园组上段沉积时期,与渝鄂海湾海岸线间距拉大,湖水变浅,面积缩小(约288km~2),成为间歇性洪控高能浅水湖泊,以物理沉积作用为主,沉积了分布连续、面积巨大的碎屑状铝土矿(岩)体。
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| 关 键 词： | 铝土矿含矿岩系 大竹园组 沉积环境 形成机制 大竹园地区 黔北 |
| 收稿时间： | 2015/12/5 0:00:00 |
| 修稿时间： | 2016/7/3 0:00:00 |
The sedimentary environment and formation mechanism of bauxite-bearing rock series in Dazhuyuan area, northern Guizhou Province |
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| LIU Ping,LIAO You-chang and ZHANG Ya-jing.The sedimentary environment and formation mechanism of bauxite-bearing rock series in Dazhuyuan area, northern Guizhou Province[J].Chinese Geology,2016(6):2173-2191. |
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| Authors: | LIU Ping LIAO You-chang and ZHANG Ya-jing |
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| Institution: | No. 106 Geological Party, Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Zunyi 563000, Guizhou, China,No. 106 Geological Party, Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Zunyi 563000, Guizhou, China and No. 106 Geological Party, Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Zunyi 563000, Guizhou, China |
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| Abstract: | The lithostratigraphy of the bauxite-bearing rock series of Dazhuyuan area in northern Guizhou is the upper Carboniferous Dazhuyuan Formation, which was deposited in Zhuoshui Lake in the late Carboniferous Maping stage. The lake was one of the offshore lakes in the southwest of Yu''e Bay. In the period of the early Dazhuyuan Formation, the high water lake with the area of 480 km2 was close to the coastline of Yu''e Bay. Sediments were mainly derived from the chemical deposition in the permanent low-energy shallow lake. It deposited amounts of chlorite rock, chlorite clay rock, ferruginous clay rock and a small amount of chamosite iron, hematite. In the period of the late Dazhuyuan Formation, the lake with the area of 288 km2 became shallow and small because of the augmenting of the distance between the lake and the coastline of Yu''e Bay. Then the lake became an intermittent flood control high-energy shallow lake. Huge areas of bauxite (bauxite rock) was deposited from the physical deposition. |
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| Keywords: | bauxite-bearing rock series Dazhuyuan Formation sedimentary environment formation mechanism Dazhuyuan area northern Guizhou |
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