| 马荣,邓克勇,吴波,黄隆辉,黄勇灵,杨梅.贵州福泉-凯里地区含铝岩系孢粉组合特征及形成时代研究[J].贵州地质,2019,36(4):335-341 |
| 贵州福泉-凯里地区含铝岩系孢粉组合特征及形成时代研究 |
| Research of The Characteristics and Formation Age of the Sporopollen Combination of the Aluminum-bearing Rock Series in Fuquan-Kaili Area, Guizhou |
| 投稿时间：2019-07-16 |
| DOI： |
| 中文关键词: 含铝岩系 孢粉组合 形成时代 早二叠世 福泉-凯里地区 贵州 |
| 英文关键词:Aluminum-bearing rock series Sporopollen combination Formation age Early Permian Fuquan-Kaili area Guizhou |
| 基金项目:贵州省自然资源厅科研项目“贵州省凯里-瓮安-龙里地区铝土矿成矿期岩相古地理及控矿因素研究”资助。 |
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| 中文摘要: |
| 贵州福泉-凯里地区含铝岩系分布广泛，但其产出时代一直存在争议。本文运用孢粉年代学的方法，对凯里-福泉地区铝土矿4条典型剖面采集6件孢粉样品，讨论铝土矿的形成时代。研究表明:本次发现的孢粉样品中 “四方十字粉 Crucisaccites quadratoides、布氏厚角孢 Triquitrites bransonii和固定三肩孢 Tantillus perstantus等是贵州早二叠世时期最常见的特征属种，因此将本区铝土矿成矿时代限定为早二叠世。与黔北务正道地区铝土矿对比，含铝岩系孢粉组合特征与黔北务正道地区含铝岩系中孢粉组合特征相似度高，含铝岩系应形成于早二叠世紫松期-隆林阶，与黔北务正道地区大竹园组铝土矿形成时代相当。 |
| 英文摘要: |
| The aluminum-bearing rock series in the Fuquan-Kaili area of Guizhou is widely distributed, but its production era has been controversial. In this paper, six sporopollen samples were collected from four typical profiles of bauxite in Kaili-Fuquan area using the method of sporopollen chronology to discuss the formation age of bauxite. Studies have shown that: in this spore powder sample, Crucisaccites quadratoides, Triquitrites bransonii and Tantillus perstantus are the most common genus species in Guizhou during the Early Permian period, so the aluminum will be The age of ore-forming mineralization is limited to the Early Permian. Compared with the bauxite deposits in the Wuzhengdao area, the characteristics of the sporopollen combination of the aluminum-bearing rock series are similar to those of the aluminum-bearing rock series in the Wuzheng area of northern Hebei, and the aluminum-bearing rock series should be formed in the Early Permian purple. The Songnian-Longlin step is equivalent to the formation of the bauxite deposit of the Dazhuyuan Formation in the Wuzhengdao area. |
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