The lower part is a micro - tidal range evaporative tidal sequence consisting of thin - bedded gypsum - bearing , muddy - limestone and dolomicrite 下部为薄层的含石膏、硬石膏晶体、团块及肠状石膏层的泥晶灰岩、微晶白云岩组成的小潮差蒸发潮坪层序。
The formation mechanism of the pore of diagenetic dolostone includes : 1 ) the primary porosity is essential condition for the formation of dolostone reservoir 成岩白云岩孔隙的形成机制有: l )岩石的原生孔隙度是成岩白云岩储层形成的必要条件。
The upper part is a set of evaporite quasi - tidal sequence with clear cycles which is made up of middle - thin - bedded , gypsum - bearing muddy limestone and dolomicrite 上部为中薄层状富泥的含石膏质夹层的泥质泥晶灰岩、微晶白云岩组成的旋回性清楚的似蒸发潮坪层序。
The formation of a tight syncline in the tuchengzi formation is depicted accurately . 3 . there are three main clast types in the conglomerate : andesite , limestone , and dolomite 4 、确定了土城子组砾岩中的三种主要砾石成分(安山岩、灰岩和白云岩砾石)的来源。
Micritic dolostone occurs widely in the middle and upper cambrian and is yellowish brown and brickcolored red , in which parallel laminae , bird ' s - eyes and mud - cracks are developed 准同生白云岩广泛出现于中上寒武统，岩石呈土黄色、砖红色，具纹层、乌眼、乾裂构造。
In the same conditions of temperature , pressure and specific surface area , the start - up dissolution velocity of limestone sample is more than the dolostone ' s one 在相同温压、相同比表面积的条件下，灰岩类岩石样品的启动溶蚀速率大于白云岩类岩石样品的启动溶蚀速率。
The slumping event deposits were mainly breccia dolostone ( limestone ) while the turbidity current event deposits were turbidity grain limestone ( dolostone ) 其中滑塌事件的沉积产物主要为滑塌角砾白云岩（石灰岩） ，浊流事件的沉积产物主要为浊积颗粒石灰岩（白云岩） 。
The research and development of the new pearl nuclei can not only protect biological resources and ecological environment , but also help to meet the need of future pearl production 研制和开发新型白云岩珠核，既能保护生物资源和生态环境，又能满足今后珍珠产业发展的需求。
The reservoir of dolomite is mainly distributed in diagenetic dolostone . so the formation mechanism of diagenetic dolostone have directly relation with that of the reservoir pore 白云岩储集岩主要分布在成岩白云岩中，因而成岩白云岩的形成机制便直接与储层孔隙的形成机制相关。
The well - developed rimmed textures indicate that the dolostones in the study area resulted from the diagenetic replacement of limestones by mixed meteoric - marine pore fluids 广泛发育的白云石环边结构等淡水成因标志表明，该区白云岩是通过大气水海水孔隙混合流体交代灰岩所形成的。
