Spore assemblages from the Lower Devonian ‘Lower Old Red Sandstone’ deposits of Arran, Scotland
Spore assemblages from the Lower Devonian ‘Lower Old Red Sandstone’ deposits of Arran, Scotland
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苏格兰阿伦下泥盆统“下老红砂岩”矿床的孢子组合
DOI：
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发表时间：
2009
影响因子：
1.2
通讯作者：
C. Wellman
中科院分区：
文献类型：
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作者：
C. Wellman
摘要在苏格兰阿兰岛“下古红砂岩”序列上部的Am Binnein砂岩中，发现了分散孢子组合。孢子组合属于Emphanisporites annulatus-Camarozonotriletes sextantii（AS）孢子组合生物带（SAB），表明早泥盆世，埃姆斯（但不是最早的埃姆斯或最晚的埃姆斯）时代。这是阿兰“下部老红砂岩”的第一个可靠的年龄限制，并使其与苏格兰米德兰山谷大陆上开发的更广泛的层序相关联。Am Binnein砂岩被确认为Strathmore群的对应物。
ABSTRACT Dispersed spore assemblages have been recovered from the Am Binnein Sandstones from the upper part of the ‘Lower Old Red Sandstone’ sequence on the island of Arran, Scotland. The spore assemblages belong with the Emphanisporites annulatus–Camarozonotriletes sextantii (AS) Spore Assemblage Biozone (SAB), indicating an Early Devonian, Emsian (but not earliest Emsian or latest Emsian) age. This is the first reliable age constraint for the ‘Lower Old Red Sandstone’ of Arran, and enables correlation with the more extensive sequence developed on the mainland in the Midland Valley of Scotland. The Am Binnein Sandstones are confirmed as correlatives of the Strathmore Group.