新疆早寒武世磷矿前景上应注意的几个问题

• 作 者: 张鸿昌
• 出 处: 地质科技情报
• 发表日期: 1985年01期
• 关键词: 早寒武世 岩相古地理图 构造单元 陆源物质 分布规律 地台 磷块岩 果子沟 柯坪 海浸

新疆早寒武世磷矿所处的构造位置总的看来是有利的,即位于地台和地槽的边缘构造单元。可是对具体的地区来说也存在不利因素,如果子沟一科古琴地区构造运动较频繁,缺乏长期稳定的成璘环境,并有较多的陆源物质输入,形成含磷砂岩和砂质磷块岩。这至少对于形成大而富的海相磷矿床是不利的,因此应编制早寒武世岩相古地理图,以加强对本区含磷盆地及磷块岩分布规律的认识。鉴于

The tectonic positions of the Early Cambrian phosphate rock in Xinjiang generally appear to be favorable, ie, the tectonic units located on the platform and the trough. However, there are also unfavorable factors for specific regions. If the tectonic movement in Zigou-Keguqin area is relatively frequent, there is a lack of long-term stable environment and more input of terrestrial materials, the formation of phosphorus-bearing sandstone and sandy phosphorous rock. This is at least unfavorable to the formation of large and rich marine phosphate deposits. Therefore, the paleogeographic map of the Early Cambrian should be compiled to enhance the understanding of the distribution rules of phosphorus-bearing basins and phosphorite in this area. Given that