Littoral Karst Surface Feature And Characteristic Of Liaodong Peninsula

Carbonate rocks of China are extremely development. The distribution of karst area is so vast that many types of karst, as other countries in the world beyond. Chinese people in the long-term labor practice has accumulated a wealth of karst knowledge, and formed the simple karst theory. All different age, different tectonic units of the historical development of geological, the geologic structure appearance is dissimilar, enables the karst the distribution with to appear differently. Different outside force molds various types of modern karst landforms type and the shape. The dissolution of groundwater is also differences, forming different climatic zones karst type.Study area belongs to north karst region. Less precipitation in the area, and some also for the solid precipitation (snow), therefore the surface runoff is smaller. Another cold winter, biochemical activities obviously decreased therefore the karst function is weaker. Karst landforms surface prominence, covers with the wide-shallow depressions, mainly Dry Valleys and underground corrosion cracks and small holes are higher. Because the ground water has the low centralism excretion basic point, therefore the depth portion common tall and slender karst pipeline growth, the partial land sector has the limestone cave, but very little has the big buried river. "Chinese Karst Research" (1976) divides into our country karst three types, that is, mainly to erosion, dissolution -- erosion, erosion -- mainly structure [1]. Littoral karst formation process is divided into two parts, dissolution, and seawater erosion. The bedrock forms to the late tertiary period, forms by the dissolution of karst formation was Quaternary loose cover coverage, After the water erosion on the cover of washouts, a mixture of freshwater further erosion of bedrock. Karst changed the form.Karst area of the pattern is formed in the ancient late tertiary period from groundwater vertical permeability of the formation. Quaternary loose cover after the role of perennial water erosion will be exposed bedrock, and after the seawater corrosion and erosion eventual formation of a special form of karst type -- Littoral karst forms. This paper mainly from the karst topography and sea karst form after two aspects to describe the coastal karst surface morphology. Introduced the rock surface contours 10 kind, between the stone column dissolves the ditch 3 kinds, the sea eclipse karst shape 9 kinds dissolves the cylindrical condition 7 kinds including the sea eclipse.Littoral karst is development in the coastal zones of carbonate rocks by the dissolution of salt and fresh water mix to form a special type of karst. Coastal karst growth has its special formation mechanism. This article will offer a contrast to the sea of karst landforms and topography of the difference between simple descriptions of karst weathering crust overlying features and on the coastal karst formation mechanism.