摘要
琼州海峡位于雷州半岛和海南岛之间,其规模仅次于渤海海峡和台湾海峡,为我国第三大海峡。平均宽度约30km,最窄处仅19.5km,东西长约80km。海底普遍发育陡坎、深穴,地形非常复杂。特别是在海底地形图上,常见有一些略呈卵形的孤丘,引人注目。这种孤丘地貌,有的学者曾经怀疑是海底火山锥。
Some 'egg-like isolated hills' had been seen at the topographical chart. Views on. their grenesis varied. Sub-marine topographical and geomorphological study of the offshore Che-ngmai cape show that these isolated hills consist of basalt with basalt plain and wavy geo-morphological units formed by sphere-weathering basalt being developed around them. These isolated hills are yolcanic cone formed, during middle or late Pleistocene.These volcanic cones are not the typical ones because dimension of them were smaller and they were eroded by strong tidal current for long long time.
出处
《海洋科学》
CAS
CSCD
北大核心
1991年第3期68-69,共2页
Marine Sciences
