海平面变化成因及其盆地响应

海平面及海平面变化研究成果可概括为10个方面,但应将海平面与海平面变化,海平面升降与振荡、波动,全球与相对、高频、复合海平面、T-R旋回与海平面变化等的概念理清,限制其概念的外延和内涵及其相互之间的关系。对利用沉积记录来研究海平面变化的重视程度很高,但对海平面变化对沉积盆地的影响注意甚少。建议关注海平面升降变化对盆地充填物的作用,对沉积型矿床的控制和对大陆边缘地壳变形的反弹作用过程的研究及定量模拟是一个重要方向,它可能为大陆边缘动力学研究提供一方面的思路。

RESPONSES OF SEDIMENTARY BASIN TO SEA-LEVEL CHANGES

The research achievements in sea level and sea level changes could be summarized as about ten aspects although some concepts are misunderstood or misused for a long time. It is proposed that clear definition and discrimination of some relevant concepts and relationships on sea level and sea level change, eustasy and relative sea level, high frequency sea level and composite sea level, sea level rising falling, sea level fluctuation and sea level oscillation, sea level change and transgressive regressive cycle etc., should be made. In geology, it is common that the deciphering of sea level and sea level changes has been using the records of sediments in strata. It is emphasized that the responses of sedimentary basin to sea level changes should be studied in more detail, for which sedimentary deposits and marginal crust deformation to sea level changes may be targets that can provide a method to the dynamics of continental margin.