| 扬子区晚二叠世—中三叠世海平面变化 |
| |
| 引用本文： | 殷鸿福,童金南.扬子区晚二叠世—中三叠世海平面变化[J].地球科学,1994,19(5):627-632. |
| |
| 作者姓名： | 殷鸿福 童金南 |
| |
| 作者单位： | 中国地质大学地质系 武汉430074
(殷鸿福，童金南，丁梅华，张克信)，中国地质大学地质系 武汉430074(赖旭龙) |
| |
| 基金项目： | 国家基础性研究重大关键项目“中国古大陆及其边缘层序地层和海平面变化研究”资助 |
| |
| 摘 要： | 本文首先介绍了建立扬子地台晚二叠世－中三叠世海平面变化曲线的步骤，即将由生境型得出的水深曲线按阶转换为海平面变化曲线，然后将扬子区曲线与世界曲线进行了比较，结果表明，晚二叠世至Ｇｒｉｅｓｂａｃｈｉａｎ期，由于世界上绝大部分地区缺上二叠统海相地层序列，扬子区曲线的这一部分可作为修改世界曲线的重要参考，扬子区早－中三叠世短期变化曲线与世界曲线一致，而长期曲线则不相符，扬子区的长期曲线对受印支运动影响的
|
| 关 键 词： | 晚二叠世 三叠世 海平面变化 |
Late Permian-Middle Triassic Sea Level Changes of Yangtze Platform |
| |
| Yin Hongfu Tong Jinnan Ding Meihua Zhang Kexin Lai Xulong.Late Permian-Middle Triassic Sea Level Changes of Yangtze Platform[J].Earth Science-Journal of China University of Geosciences,1994,19(5):627-632. |
| |
| Authors: | Yin Hongfu Tong Jinnan Ding Meihua Zhang Kexin Lai Xulong |
| |
| Abstract: | This paper first introduces procedures leading to establishment of Late Permian- Middle Triassic sea level change curve of Yangtze Platform. Bathymetric curves extracted from curve of habitat types are first transformed to sea level curves in the order of stages. The comparison between curves of Yangtze and the world reveals that since the Late Permian marine sequences are lacking in most parts of the world, the Late Permian to Griesbachian curve of Yangtze's curve may serve as an important parameter for further revision of the world curve. The Early- Middle Triassic short- term changes of Yangtze are briefly concordant with those of Haq's world curve, whereas its long-term changes are discordant. The latter, however, is representative of the East Asian regions affected by the Indosinian Orogeny. Basically the third cycles of Yangtze and the world are only partly concordant, and even in concordant cases their detailed boundaries are not coincident. This indicates that sea level changes are not strictly synchronous over the world. It seems that the 1st and 2nd cycles (supercycles and megacycles) may be world-wide, but not the 3rd cycles. |
| |
| Keywords: | Permian Triassic sea level change bathymetric curves Yangtze region |
| 本文献已被 CNKI 维普 等数据库收录！ |
