| 西北地区侏罗纪地质事件及其在地层划分对比中的意义 |
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| 引用本文： | 符俊辉.西北地区侏罗纪地质事件及其在地层划分对比中的意义[J].沉积学报,1998,16(3):147-152. |
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| 作者姓名： | 符俊辉 |
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| 作者单位： | 西北大学地质系 西安 710069 |
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| 摘 要： | 在大量实际资料的基础上，深入研究了西北地区陆相侏罗纪地层中记录的地质事件。从煤层特征、颜色特征、岩性特征、孢粉组合特征、植物群特征和双壳动物化石特征等方面，建立了西北地区陆相侏罗纪地层划分对比的标志。并认为这些生物事件和旋回沉积层的形成都与大范围内侏罗纪古气候变化密切相关，中侏罗世晚期到晚侏罗世末存在一次最为明显的升温事件。
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| 关 键 词： | 西北地区 陆相侏罗系 地质事件 划分对比 标志层 |
| 收稿时间： | 1997-05-25 |
Geological Events and Their Significance in the Subdivision and Correlation of the Continental Jurassic in Northwest China |
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| Fu Junhui.Geological Events and Their Significance in the Subdivision and Correlation of the Continental Jurassic in Northwest China[J].Acta Sedimentologica Sinica,1998,16(3):147-152. |
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| Authors: | Fu Junhui |
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| Institution: | Department of Geology, Northwest University, Xi'an 710069 |
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| Abstract: | On the basis of detailed investigation of large quantity of geology sections,the geological events recorded in the continental Jurassic strata in Northwest China have been systematically studied in this paper.The index bed of the subdivsion and correlation of continental Jurassic are established according to the distribution of coal bearing rocks,lithologic and sedimentary characteristics and sporo pollen flora assemblage characteristics,as well as bivalve fossil association features.The forming mechanism of bio events and cyclic sedimentary bed is due to the change of palaeoclimate and palaeoenvironment effect during that period.The existance of one temperature rising event is extraordinarily evident during late middle to late Jurassic. |
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| Keywords: | northwest China\ continental Jurassic\ geological event\ stratigraphical subdivision and correlation\ index beds |
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