| 范玉梅.黔中南华纪末期—震旦纪早期障壁岛及成磷控制作用[J].贵州地质,2017,34(3):175-182,198 |
| 黔中南华纪末期—震旦纪早期障壁岛及成磷控制作用 |
| Early Barrier Island and Phosphorite-formation Controlling Process of Late Nanhua Period-Early Sinian Period in Middle and South Guizhou |
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| DOI： |
| 中文关键词: 磷矿 障壁岛 成磷控制作用 震旦纪 黔中 |
| 英文关键词:Phosphorate deposit Barrier island Phosphorate formation ore-control process Sinian period Central Guizhou |
| 基金项目:贵州省矿产资源调查成果综合集成与服务产品开发（任务书编号[2015]08-01-04-029，子项目编号：12120114058401）；贵州震旦系磷矿成矿地质条件和成矿作用研究（黔地矿办发[2013]56号）。 |
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| 中文摘要: |
| 黔中震旦纪磷矿受制于雪峰运动形成的基底及当时的沉积环境。南华纪末期—震旦纪早期，黄平上塘—麻江青平存在北北东向隆起，海平面上升时为水下隆起，海平面下降时露出水面为古陆，形成障壁岛。障壁岛的存在，对磷矿形成具有重要意义，表现为上升洋流带来的磷酸盐组分，在障壁岛后聚积和沉积，形成矿体厚、矿床规模大、矿石品质好的磷块岩矿床，在障壁岛东部广海，磷酸盐组分不易聚积，形成矿体厚度小、矿床规模小、矿石品质一般的磷块岩矿床。黄平上塘—麻江青平障壁岛造成的隆、凹古地理格局，为磷块岩矿床的形成提供了聚积和沉积有利场所，对黔中地区磷矿找矿预测具有重要意义。 |
| 英文摘要: |
| Phosphorate of Snian in central Guizhou is controlled by the basement formed in Xuefeng orogeny and the sedimentary environment in that timeFrom late Nanhua period to early Sinian，NNE uplift exited in Shangtang of Huangpin and Qingping of Majiang，it uplift under the water when the sea level raised，it formed barrier island when the sea level droppedThe barrier island is very important for the formation of phosphorate，the phosphorate from acceding current accumulated and deposit in the barrier island，then phosphorate deposit of thick orebody，big scale and high quality formedIn the east open sea，it’s hard for phosphorate to accumulate，the phosphorate deposit of thin orebody，small scale and normal quality formedThe uplift and depressed Palaeogeographical pattern in Shangtang of Huangpin and Qingping of Majiang afford advanced place for the accumulation and sedimentary of phosphorate deposit，it’s very important for the phosphorate deposit prediction in the central Guizhou. |
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