论文部分内容阅读
通过实地考察和资料分析,海南岛南部全新世以来以沉降活动为主要特征,鹿回头珊瑚礁能够反映全新世以来的海平面变化,鹿回头岸礁礁坪面上的原生珊瑚礁是全新世高海平面时期的产物。全新世以来南海北部至少存在过 4 期相对高海平面阶段:7300~6000、4800~4700、4300~4200和3100~2900cal.aBP。其中 7300~6000aBP 是整个全新世最高海平面时期,也是鹿回头珊瑚礁发育的繁盛期,基本形成了现代珊瑚礁的地貌格局,后来不同时期发育的珊瑚礁是在此时期形成的礁塘或礁坑等低洼地中形成,并在鹿回头半岛两侧向外发展,现代珊瑚礁则发育于全新世珊瑚礁的外礁坪和礁前斜坡带。另外,鹿回头珊瑚礁反映的南海北部全新世高海平面时间与南海其他地区高海平面时间可以衔接或对应,说明南海地区全新世高海平面具有全球背景,至少在南海是一致的,且与气候变暖紧密相联。
Through field investigation and data analysis, the main characteristics of subsidence since the Holocene in southern Hainan Island, Luhuitou coral reefs can reflect the sea level changes since the Holocene. The native coral reefs on the reef surface of Luhuitou headhunter are the Holocene high sea level The product of the period. There have been at least four stages of relatively high sea level in the northern South China Sea since the Holocene: 7300 ~ 6000, 4800 ~ 4700, 4300 ~ 4200 and 3100 ~ 2900 cal.aBP. Among them, 7300 ~ 6000aBP is the highest sea level of the whole Holocene, and is also the prosperous period of the development of coral reefs in Luhuitou area, basically forming the geomorphological pattern of modern coral reefs. Later, the coral reefs developed at different periods are such as reef ponds or reef pits formed at this period And formed on both sides of the Luhuitou Peninsula. Modern coral reefs are developed in the outer reef slope and reef slope belt of Holocene coral reefs. In addition, the high-level sea level of the Holocene in the northern South China Sea reflected by the Luhuitou coral reef can be linked or matched with the high sea level time in the other parts of the South China Sea, indicating that the Holocene high-sea level in the South China Sea has a global background, at least in the South China Sea, Closely linked to warming.