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地质论评  2007 

贵州南部晚石炭世一种新的生物礁类型

Keywords: 贵州晚石炭世造礁生物古生态生物礁

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Abstract:

黔南晚石炭世普遍发育了一套台地相的碳酸盐岩地层,其中多种底栖生物十分繁盛,为深入开展石炭纪生物礁研究提供了有利条件。近几年,随着研究的不断深入,笔者等陆续发现了一些新型的造礁生物,其中一种重要的造礁生物是一种类似藻类的生物。通过大量的野外观察和室内工作,笔者等发现:这种生物是黔南晚石炭世的重要造礁生物类型之一,它在台地边缘生物碎屑滩上以多种生长方式构建礁体。该生物具有两种生长形式:一种是生物体呈波状延续生长,弯曲环绕,层层叠置形成不同类型的纹层或席状;另一种是生物体在纵向和横向上相互交叉,构成规则或不规则的网格状形态。这种礁体的发现,丰富了石炭纪生物礁的类型。

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