多角形的裂纹，又称干裂。 沉积物未固结即露出水面，受到日晒，水分蒸发，体积收缩而产生的。裂纹常具上宽下窄形态，其中被泥沙填充。
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两剖面复成分砾岩杂色沉积、泥裂、石膏层等为该区可能存在的干旱气候提供了依据。
The occurrence of variegated polymictic conglomerate sediment mud cracks gypsum strata and so on can provide evidences for aridity climate in western liaoning.
黛眉山红石峡谷群红岩碧水堪称山水画廊，又是波痕、泥裂等沉积构造的天然博物馆；
The group of red stone valleys in Daimeishan can be said to be the gallery of mountains and waterscape, as is also the natural museum of ripple marks and mud cracks;
把实验结果与理论计算结果相对比，二者得到的滤失速率近似，证明了本文所建立的泥页岩压裂滤失模型具有较高的可信度。
Experimental results and theoretical results are compared and both leak-off rates are approximate. It proved that leak-off calculation model which is established in this paper is high credible.
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