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| 环渤海地区及华北平原第四纪古环境变迁机制 | |
| 引用本文： | 王强,刘立军,王卫东,徐海振,孙维义.环渤海地区及华北平原第四纪古环境变迁机制[J].地质调查与研究,2004,27(3):129-138. |
| 作者姓名： | 王强 刘立军 王卫东 徐海振 孙维义 |
| 作者单位： | 1. 天津地质矿产研究所,天津,300170 2. 河北水文工程地质勘察院,石家庄,050021 3. 辽宁水文地质工程地质勘察院,大连116037 4. 辽宁省地质调查研究院,锦州,121000 |
| 基金项目： | 中国地质调查局地质调查项目(1212010340108) |
| 摘 要： | 在青藏高原隆升背景下，环渤海地区与华北平原成为中国东部汇流盆地和堆积平原。第四纪时期阶段性河流进积，造成研究区出现构造气候旋回性的环境变迁。晚更新世以来沿海平原进入一个快速沉降阶段，在全球性冰川海平面变化叠加背景下．研究区水热对流状况以及相应的环境变迁更加剧烈和丰富。在晚全新世河流造陆过程中．河流的沉积速率超过了海平面的上升速率，陆地才得以形成。在现代海岸带依然持续构造沉降、河流输沙减少、相对海平面上升的背景下，认识不同时间尺度环境变迁机制是极其必要的。 |
| 关 键 词： | 环渤海 华北平原 第四纪 古环境变迁 |
| 文章编号： | 1007-6956(2004)03-0129-10 |
| 修稿时间： | 2004年7月1日 |
The Mechanism of Quaternary Palaeoenvironmental Change in Circum-Bohai-Sea Region and North China Plain |
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| WANG Qiang,LIU Li-jun,WANG Wei-dong,Xu Hai-zhen and SUN Wei-yi.The Mechanism of Quaternary Palaeoenvironmental Change in Circum-Bohai-Sea Region and North China Plain[J].Geological Survey and Research,2004,27(3):129-138. | |
| Authors: | WANG Qiang LIU Li-jun WANG Wei-dong Xu Hai-zhen and SUN Wei-yi |
| Institution: | WANG Qiang~1,LIU Li-jun~2,WANG Wei-dong~3,Xu Hai-zhen~2 and SUN Wei-yi~4 |
| Abstract: | Under the Tibet-Qinghai Plateau rising setting, the Circum-Bohai-Sea (CBS) region and North China Plain became a confluence basin and accumulation plain since Quaternary, and the periodic river progradation caused the happening of palaeoenvironmental change with tectono-climatic cycles characteristic in the CBS region and North China Plain. Since the Late Pleistocene the coastal plain subsidence came into a quick phase, because the global eustasy superposed, as a result, the hydrothermal situation and relative environment change into more abundant and acute. Since the late Holocene in the process of modern land forming, the sediment accumulation rate is over that of sea level rise, the land formed finally. Today on the coast zone, there still is continuously tectonic subsidence but the river loading reduces, which results in the sea level rises relatively. It is very necessary to know the mechanism with different time-scale for palaeoenvironmental change. |
| Keywords: | Circum-Bohai-Sea North China Plain Quaternary environmental change |
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