摘要
珊瑚礁是热带亚热带海洋与沿岸特有的一种主要由生物作用形成的地质体和地貌类型。由于造礁珊瑚对生态环境,如水温、光线、盐度、溶解氧、基底和水动力因素等的要求相当严格,因此,珊瑚礁是恢复其生长时期的自然环境条件和探讨以后的海岸线变迁、海平面变化及地壳运动历史的重要标志。
A study of the cross section of one of the Luhuitou coral-reefs indicates that the raised coral-reef at the base of the section was form ed 5200-4900 years ago during the Holocene transgression by sea erosion.The coral gravels and sand and secondary reef of the middle and upper parts of the profile were deposited about 4300 years ago with several interruptions between the years 3800-3600.The temporary halts during the represented Subsequent regressions of the sea level.The fact that the Luhuitou coral reef has been lifted to 1.8 m above high tide lends support to the view that higher Holocene sea levels existed.This is also an evidence that the sea bottom of this area has been uplifted about 2m during the past 5000 years.
出处
《科学通报》
1979年第21期995-998,共4页
Chinese Science Bulletin
