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1979年12月至198o年8月我部和美国哥伦比亚大学拉蒙特-多尔蒂地质观测所合作在南海中部和北部开展地质-地球物理综合调查.在这期间,在北部陆缘投放了165个声纳浮标,其中152个浮标剖面能求解.分析研究这些成果,作者等(1982)曾发表了本区沉积物的速度结构分布一文.本文将选用揭示上、下地壳层或层_2、层_3的声纳浮标段,结合区域声纳浮标和折射资料,对南海北缘(包括部分海盆深海平原区)的地壳结构、构造作一初步讨论.讨论范围:东经112°—120°,北纬22°—14°附近(图1).
From December 1979 to August 198o, in collaboration with the Lamont-Doherty Geological Observatory, Columbia University, I conducted a comprehensive geophysical-geophysical survey in the central and northern South China Sea during which 165 Sonobuoys, of which 152 buoy sections can be solved.Analysis of these results, the author (1982) has published a text of velocity distribution of the sediment in this area will be selected to reveal the upper and lower crust or layer _2, layer _3 sonobuoy section, combined with the regional sonobuoy and refraction data, a preliminary discussion on the crustal structure and structure of the northern margin of the South China Sea (including some deep-water plain area) discuss the range: longitude 112 ° -120 °, latitude 22 ° -14 ° near (Figure 1).