摘要
本文对海南岛环岛第四系地层的空间分布、全岛地貌特征、火山喷发和地震活动与地质构造关系进行综合分析。结果认为,海南岛的新构造运动严格受老构造的牵制。文章对新构造运动特征作了详细论述,并根据这些特征进行了新构造分区。
The neotectonic movement of Hainan Island has been being rather active since the late Tertiary period. On the basis of the old geological structures, the movement greatly affects the modern landform and the quaternary sediment in Hainan. The characteristics of the movement are as follows: (1) Three groups of main faults, the east-west, north-west and north-east ones, dominate the whole island and form a series of faultblock and neotectonic zones. There are relatively thicker stratum of pliacene series and the Quaternary system deposit in the downwarping area, and in upwarping area the bedrock appears or only thin sedimentary stratum of the Quaternary are on it. (2) The volcanos frequently erupted along the three groups of faults or at the crossford of the faults. The eruptions are of periodic, continual, intermittent and transferable. (3)The earthquakes, closely related to the geological structures, are active and strong, especially in the North and East of the island. (4) The movement of the coast is obviously different in different parts where the East coast is uplifting while the West one is subsiding and the mountains in the middle of the island is mainly rising slowly and intermittently. (5) The modern river valleys mostly develop along the faults.
出处
《热带地理》
北大核心
1989年第2期174-182,共9页
Tropical Geography
关键词
构造运动
地质
海南岛
Neotectonic movement
The characteristics
Hainan Island
