| 秦岭三叠纪古海盆的生态地层、生物古地理特征及其演化 |
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| 引用本文： | 赖旭龙,殷鸿福,杨逢清. 秦岭三叠纪古海盆的生态地层、生物古地理特征及其演化[J]. 地球科学, 1992, 0(3) |
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| 作者姓名： | 赖旭龙 殷鸿福 杨逢清 |
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| 作者单位： | 开放研究实验室基金地质系(赖旭龙，殷鸿福)，开放研究实验室基金地质系(杨逢清) |
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| 摘 要： | 本文在对西秦岭4条剖面进行生态地层研究的基础上,通过生态地层对比揭示了三叠纪秦岭海盆进化的一般模式和海平面变化的细节。古生物地理分析表明:三叠纪时,秦岭北侧属于温带生物区系,秦岭南部属于热带-亚热带生物区系。秦岭各区与邻区之间生物相似性系数研究表明,秦岭三叠纪海盆具有一定的宽度和深度,但不是宽广的大洋。
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| 关 键 词： | 三叠纪 古海盆 生态地层 生物古地理 秦岭地区 |
THE CHARACTER AND EVOLUTION OF ECOSTRATIGRAPHY AND PALEOBIOGEOGRAPHY OF TRIASSIC QINLING BASIN |
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| Lai Xulong Yin Hongfu Yang Fengqing. THE CHARACTER AND EVOLUTION OF ECOSTRATIGRAPHY AND PALEOBIOGEOGRAPHY OF TRIASSIC QINLING BASIN[J]. Earth Science-Journal of China University of Geosciences, 1992, 0(3) |
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| Authors: | Lai Xulong Yin Hongfu Yang Fengqing |
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| Abstract: | Based on ecostratigraphic study of four sections in West Qinling, several fossil communities are established and their environmental settings reconstructed. Ecostratigraphic subdivision and correlation of four sections transversing West Qinling have revealed both the general pattern of basin evolution and details of eustatic vibration. According to the paleobiogeographic analysis, the southern region of Qinling belonged to tropical - subtropical zone, while the northern region of Qinling to temperate zone in Triassic. The study of the similarity coefficients at species level among various regions of Qinling, Yangtze and North China shows that the Triassic sea of Qinling had considerable wedth and depth, but not a vast ocean. |
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| Keywords: | Triassic ancient sea basin ecostratigraphy paleobiogeography Qinling area. |
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