地质通报2011,Vol.30Issue(9):1405-1411,7.
渤海湾全新世贝壳堤与牡蛎礁:古气候与海面变化
Holocene cheniers and oyster reefs in Bohai Bay: palaeoclimate and sea level changes
摘要
Abstract
This paper deals with the synchronous characteristics of cheniers existing on the Chenier Plain along the west coast of Bohai Bay and oyster reefs existing on the Oyster Reef Plain of northwest Bohai Bay and its adjacent shallow sea. Approximately, such synchronous processes can be separated into six periods, alternately intercalated with the Holocene cold events of 5, 4, 3, 2 and 1. The vertical range between front-foot and rear-base of the chenier-bottom corresponds to the vertical 3m contemporaneous high tidal range, and the reef top approximately reflects the MSL (mean sea level). Since 7ka cal BP, the relative sea level trend in the Chenier Plain has been quite similar to the present situation, with possible small fluctuations being less than ±lm. The Mid-Holocene high stand of the relative sea level was offset by sedimentary consolidation. However, under the joint influences of neotectonic subsidence and consolidation, the relative MSL was 2~3m below the present sea level on the Oyster Reef Plain.关键词
贝壳堤/牡蛎礁/气候变化/相对海面变化/渤海湾Key words
cheniers/oyster reefs/climate change/relative sea level change/Bohai Bay分类
天文与地球科学引用本文复制引用
王宏,苏盛伟,王海峰,陈永胜,田立柱,李建芬,裴艳东,王福,商志文,范昌福,姜兴钰..渤海湾全新世贝壳堤与牡蛎礁:古气候与海面变化[J].地质通报,2011,30(9):1405-1411,7.基金项目
国家自然科学基金项目《海面升高与气温上升的耦合与非耦合关系》(批准号:40742011)、《渤海湾西北岸埋藏牡蛎礁记录的中全新世古环境变化》(批准号:40872106)和中国地质调查局项目《泥质海岸带对全球变化的响应与趋势预测》(编号:1212010911069) (批准号:40742011)