Toarcian to Bathonian (Jurassic) palynology of the Inner Hebrides, Northwest Scotland
Toarcian to Bathonian (Jurassic) palynology of the Inner Hebrides, Northwest Scotland
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DOI：
10.1080/01916122.1991.9989393
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发表时间：
1991-10
期刊：
影响因子：
1.5
通讯作者：
J. Riding;W. Walton;D. Shaw
中科院分区：
文献类型：
--
作者：
J. Riding;W. Walton;D. Shaw
内赫布里底群岛Toarcian-Bathung Raasay铁岩建造、Bearreraig砂岩建造和大河口群的孢粉研究为苏格兰提供了一个重要的参考剖面，提供了许多具有地层意义的甲藻孢囊和小孢子资料。Bearreraig砂岩组Raasay铁岩组和Dun Caan Shales组的甲藻孢囊组合以Nannoceratopsis为主，Parvocysta套所占比例较低。后者似乎与物种多样性梯度一致，从英格兰向北到斯皮茨卑尔根递增。最早的性别形钩尾目甲藻孢囊的代表在巴约西早期的Bearreraig砂岩组的类型剖面上，并在该组中发现了可能的石炭纪孢子。Bearreraig砂岩地层中最年轻的成员，Garantiana粘土成员，生产出了棘豆和其他...
Abstract A palynological investigation of the Toarcian to Bathonian Raasay Ironstone Formation, Bearreraig Sandstone Formation and Great Estuarine Group of the Inner Hebrides has provided an important Scottish reference section, with many stratigraphically useful dinoflagellate cyst and miospore datums. The Raasay Ironstone Formation and the Dun Caan Shales Member of the Bearreraig Sandstone Formation dinoflagellate cyst assemblages are dominated by Nannoceratopsis with the Parvocysta suite present in lower proportions. The latter suite appears to be consistent with a species diversity gradient, increasing from England northwards to Spitsbergen. Representatives of the earliest sexiform gonyaulacacean dinoflagellate cysts have their inceptions in the early Bajocian Bearreraig Sandstone Formation at its type section; possible Carboniferous spores were also recovered from this formation. The youngest member of the Bearreraig Sandstone Formation, the Garantiana Clay Member, yielded Acanthaulax crispa and othe...