The Carboniferous Limestone Series of West Cumberland
The Carboniferous Limestone Series of West Cumberland
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西坎伯兰石炭纪石灰岩系列
DOI：
10.1017/s0016756800108817
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发表时间：
1922
影响因子：
2.3
通讯作者：
Charles P. Edmonds
中科院分区：
文献类型：
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作者：
Charles P. Edmonds
对化石动物群的研究表明，化石动物群始于塞米努拉带的高地平线，一直延伸到Dibunophyllum带的顶部。此外，Garwood教授在他的西北省论文中建立的“生命带”在我们地区很容易被识别，该系列包括从波纹纹饰线虫亚带的Nematophyllum减去亚带到Dibunophyllum muirhei亚带的Dibunophyllum muirHei亚带。可以进一步证实，我们地区的石灰岩不会一直存在于Aulina mtiformis S.Smith的植物层的地平线上。Saccammina带出现在我们地区，但Saccammina也出现在紧靠其上和下面的石灰岩中。西北部省份的吉瓦内拉带已经被承认，并在整个地区形成了一个恒定的地平线。它与钙质粘土石有关，从不以结节状床的形式出现。其他带子似乎也是藻类的。The Spiriferina cf.加伍德层带在第七层和第六层石灰岩之间形成一条恒定的地平线。
Summary The examination of the fossil fauna, the chief forms of which are shown in Tables I and II and Fig. 1, shows that the beds commence at a high horizon of the Seminula Zone and extend to the top of the Dibunophyllum Zone. Also, the “life-zones” established by Professor Garwood in his North-Westem Province Paper can be readily recognized in our area and the series includes the sequence from the Nematophyllum minus sub-zone of the Productus corrugatohernisphericus Zone to the Dibunophyllum muirheadi sub-zone of the Dibunophyllum Zone. It can further be established that the limestones of our area do not persist up the horizon of the Botany Beds with Aulina mtiformis S. Smith. The Saccammina Band occurs in our area, but Saccammina occurs also in the limestones immediately above and below. The Girvanella Band of the North-West Province has been recognized and forms a constant horizon throughout the area. It occurs associated with a calcitemudstone and never as a nodular bed. Other bands also appear to be algal. The Spiriferina cf. laminosa Band of Garwood forms a constant horizon between the Seventh and Sixth Limestones.