新疆塔什库尔干县达布达尔志留纪笔石动物群的新发现
Discovery of a Silurian graptolite fauna at Daftar,Taxkorgan County,Xinjiang
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摘要: 新疆维吾尔自治区塔什库尔干县达布达尔地区位于印度板块与欧亚板块结合部的西昆仑造山带，是研究喀喇昆仑山-昆仑山地质演化的重要地区之一。由于区域地质研究程度较低，该地区沉积地层中一直没有获得可靠化石证据。笔者经野外地质调查和研究，在达布达尔地区发现了近似安吉正常笔石Cf.Climacograptus anjiensis(Yang)，小型栅笔石相似种Climacograptus cf.minutus Carruthers，类似畸形双笔石Cf.Diplograptus deformis Huang et Lu等志留纪兰多弗里世的笔石化石和海百合茎化石，为西昆仑地区地质调查工作的开展和志留纪地层的划分与对比提供了重要依据。Abstract: Tectonically located in he West Kunlun orogenic belt at the junction between the Indian plate and the Eurasian plate, the Daftar area, Taxkorgan County, Xinjiang, is one of the most important areas for the study of the geological evolution of the Karakorum-Kunlun mountains. Because the regional geology of the area is less studied, reliable fossil evidence has not been got from sedimentary strata there. After field geological survey and research, the Silurian Llandoverian graptolites Cf. Climacograptus anjiensis (Yang), Climacograptus cf. minutus Carruthers and Cf. Diplograptus deformis Huang et Lu and crinoidal stem fossils were found in the area. It provides an important basis for the geological survey and the stratigraphic division and correlation of the Silurian.
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Keywords:
- Taxkorgan County /
- Daftar area /
- graptolite fossil /
- new discovery
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