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太平洋中主要的地质-地球物理研究工作量是在东太平洋海隆和特殊的海洋内部构造范围内完成的。对初看起来似乎是平坦堆积平原的辽阔海洋空间的地壳主要只进行了附带的地球物理观察。但是即使在广阔的深海平原的组分中也有其自己的地貌构造,对其进行研究使我们可以更好地了解以下问题,即这些深海盆地是否像传统上认为的那样,在构造上真的是稳定的。 对测深剖面和图件的分析表明,在太平洋西北海盆底的非常平坦的堆积平原范围内,存在着被认为是与过去按水磁法资料定为北西走向转换断层的被动部分相对应的解释为断裂带的线性地形单元(台阶、断沟,破碎带)。在这个系列中特别值得提出的是北海道断裂。 北海道断裂是在25年前的路线测量工作中发现的。它是一系列深度超过6200m的具平坦底面的断沟(谷地)。北海道断裂个别谷地的走向通常为北东并平行(或近似)于所谓日本中生代线性磁异常系列的走向。沿着马托阿转换断层观察到了这些谷地的最大位移。在Main-merickx和Sharman(1988)之后, 开始将北海道断裂看成是晚白垩世所谓正极性磁场平静期末期短时间活动过的(3Ma)扩张中心(离散板块边界)。 以下提供的材料证实,北海道断裂的谷地系统应该是在地壳向千岛-勘察加海沟作不均衡运动过程中,在地壳中形成的。本文分?
The major geo-geophysical research workload in the Pacific Ocean is completed within the East Pacific seams and within the special marine interior. For the first time the crust appears to be a flat plains of vast marine space mainly carried out with the attached geophysical observations. But even in the vast deep-sea plains, which also have their own geomorphological structures, their study allows us to better understand the question of whether these deep-sea basins, as traditionally believed, are structurally stable. Analysis of sounding profiles and maps shows that there is an explanation that corresponds to the passive portion of the NW transitional fault that was previously classified by hydromagnetic data within the very flat plains of the Pacific Northwest Ocean basin For the fault zone of linear terrain units (stairs, ditch, broken belt). Particularly worth mentioning in this series is the Hokkaido fault. Hokkaido fracture was discovered 25 years ago during the route survey. It is a series of fault ditches (valleys) with a flat bottom over 6,200 m. The strike of individual Hokkaido fault valleys is usually north-east and parallel (or approximately) to the so-called Mesozoic linear magnetic anomaly series in Japan. The maximal displacement of these valleys was observed along the Mato A-Transfiguration fault. After Main-Merickx and Sharman (1988), Hokkaido fractures began to be considered as 3Ma expansion centers (discrete plate boundaries) that were active late in the late Cretaceous so-called positive polarity magnetic field. The information provided below confirms that the Hokkaido Valley system should have been formed in the crust during an unbalanced movement of the crust into the Thousand Island - Prospecting and Trench. This article points?