| 西秦岭西段志留纪遗迹化石 |
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| 引用本文： | 杨式溥,胡云绪.西秦岭西段志留纪遗迹化石[J].现代地质,1992,6(4):384-391. |
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| 作者姓名： | 杨式溥 胡云绪 |
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| 作者单位： | [1]中国地质大学，北京 [2]中国地质科学院西安地质矿产研究 |
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| 基金项目： | 国家教委博士学科点基金资助项目“中国的遗迹化石、遗迹相及其对沉积环境分析的应用”的部分成果 |
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| 摘 要： | 本文研究了西秦岭西段志留纪海水深浅不同的两种遗迹相及其沉积环境,一种是甘南迭部拉路沟中志留世晚期浅海砂岩系所含Cruziana遗迹相,另一种是川北若尔盖晚志留世早期深海复理石Nereites遗迹相。共描述遗迹化石10属11种,其中建立3个新遗迹种。这些遗迹化石对研究西秦岭的地层发育、沉积矿产和古环境的演变提供了重要的生物成因标志,对我国的遗迹化石研究也提供了新的资料。
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| 关 键 词： | 西秦岭 志留纪 遗迹化石 |
SILURIAN TRACE FOSSILS FROM THE WESTERN PART OF WEST QINLING |
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| Yang Shipu Hu Yunxu.SILURIAN TRACE FOSSILS FROM THE WESTERN PART OF WEST QINLING[J].Geoscience——Journal of Graduate School,China University of Geosciences,1992,6(4):384-391. |
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| Authors: | Yang Shipu Hu Yunxu |
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| Abstract: | A great many of Silurlan trace fossils have been discovered from the western part of
west Qinling. In this paper two different Silurian ichnofacies in western Qinling are stu-
died: one is the Cruziana ichnofacies from the middle Silurian shallow shelf sandstones of
Lalugou near Tewo of south Kansu province. The other is the Nereites ichnofacies from
the late Silurian deepsea flysch deposits in Ruoergai, northwestern Sichuan province.
Trace fossils described in this paper include 10 ichnogenera and 11 ichnospecies, among
which 3 ichnospecies are newly established. Study of these trace fossils is of great impor-
tance for the understanding of depositional environments and geological history of the
western Qinling. |
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| Keywords: | Western Qinling Silurian trace fossils |
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