Wave-Base, Marine Profile of Equilibrium, and Wave-Built Terraces: A Critical Appraisal
Wave-Base, Marine Profile of Equilibrium, and Wave-Built Terraces: A Critical Appraisal
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波浪基础、平衡海洋剖面和波浪建造的平台：批判性评估
DOI：
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发表时间：
1963
期刊：
影响因子：
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通讯作者：
R. Dietz
中科院分区：
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作者：
R. Dietz
波基的概念及其推论、海洋平衡剖面和波浪形成的阶地在很大程度上是错误的。它们并不主导控制大陆架和斜坡的发展。地质教科书和资料书中对这些概念的处理需要修订。波基虽然是一个有用的概念，如果一般应用于高环境搅动的海洋表面区域，但它不能控制陆架沉积，因为从这个意义上说，整个陆架位于任何波基之上。相反，陆架是一个被淹没的残余表面，是由海平面波动和海陆沉积物进退而形成的，而在这里，海浪起着主导作用。大陆阶地的沉积不受波底控制，而主要受地形控制；大陆坡正在遭受侵蚀而不是前进，最终沉积发生在大陆隆起时。波浪切割平台不是在波浪底部切割，而是在冲浪底部切割。作为对大陆坡的解释，无论是小规模还是大规模的波浪阶地都是不存在的。近岸区域形成了海洋平衡剖面，并与沙子的迁移透镜体相关，但外陆架剖面不是平衡剖面。
The concept of wave-base and its corollaries, the marine profile of equilibrium and the wave-built terrace, are largely erroneous. They do not dominantly control the development of the continental shelf and slope. The treatment of these concepts in geologic textbooks and sourcebooks needs revision. Wave-base, although a useful concept if applied generally to the surficial zone of the ocean of high-ambient agitation, does not control shelf deposition as the entire shelf is above any wave-base in this sense. Instead, the shelf is a drowned and relict surface, developed by oscillation of sea level and prograding and regressing paralic sediments—and here surf plays the dominant role. Sedimentation on the continental terrace is not controlled by wave-base but chiefly by topography; the continental slope is undergoing erosion rather than prograding, and ultimate deposition occurs on the continental rise. The wave-cut terrace is not cut at wave-base but at surf-base. Wave-built terraces are nonexistent both on a small scale and on a grand scale as an explanation of the continental slope. A marine profile of equilibrium is developed in the nearshore zone and is associated with a migrating lens of sand, but the outer-shelf profile is not a profile of equilibrium.