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本文系统介绍了淮南地区太原组的剖面,讨论了岩性组合特征及变化规律,对太原组各层灰岩的对比标志进行了总结,并将千二灰(L_12)命名着沈家巷灰岩,指出该层灰岩富含蜓类化石,层位稳定,为本区标志层.从所含蜓类化石表明,本区太原组上部为Boultonia willsi—Quasifusulina tenuissima组合,下部的蜓类分带性不甚明显.根据目前资料,初步认为淮南地区缺失本溪组沉积.
This paper systematically introduces the profile of Taiyuan Formation in Huainan area, discusses the characteristics and variation regularity of lithologic assemblages, summarizes the contrast marks of limestone of various layers in Taiyuan Formation, and names limestone lime (L_12) as Shenjiaxiang limestone , Indicating that this layer of limestone is rich in flies and fossils with stable layers and is a marker layer in this area.From the fossils of the fossils, it shows that the upper part of Taiyuan Formation in this area is Boultonia willsi-Quasifusulina tenuissima combination, Not obvious.According to the current data, initially believed that the lack of Benxi Group deposition in Huainan area.