In geology, fissility is the ability or tendency of a rock to split along flat planes of weakness (“parting surfaces”). [1] These planes of weakness are oriented parallel to stratification in sedimentary rocks . [ 2 ]

片狀裂理（英語： Fissility （geology） ）是岩石沿薄弱平面分裂的能力或趨勢 [1] 。 這些薄弱平面與沈積岩中的層理平行 [2] 。在岩石薄片上可看出片狀裂理面上有發育良好的片狀礦物例如雲母等。片狀裂理是由沉積或變質所造成的。

片状裂理 （英语： Fissility （geology））是岩石沿薄弱平面分裂的能力或趋势 [1]。 这些薄弱平面与 沉积岩 中的层理平行 [2]。 在岩石薄片上可看出片状裂理面上有发育良好的片状矿物例如 云母 等。 片状裂理是由沉积或变质所造成的。 在压实过程中，粘土颗粒在沉积岩（例如 页岩 或 泥岩）中会被同向排列形成薄弱面 [3]。 在变质程中云母矿物的再结晶和生长，也能形成薄弱面 [4]。 岩石的片状裂理也可以通过多种地质作用方式降低，包括在压实前， 粘土 矿物凝絮成颗粒状、 …

In geology, fissility is the ability or tendency of a rock to split along flat planes of weakness. These planes of weakness are oriented parallel to stratificat...

Cleavage is "a capacity present in some rocks to break in certain directions more easily than in others," while fissility is a "structure in some rocks, by virtue of which they are already separated into parallel laminae in a state of nature. The term fissility thus complements cleavage, and the two are included under cleavage as ordinarily ...

The structure corresponds to Sorby's "ultimate structure" cleavage.1 Fissility is here defined as a structure in some rocks by vir- tue of which they are already separated into parallel laminae in. a state of nature. The term fissility thus complements cleav- age, and the two are included under cleavage as ordinarily defined.

The fissility is the ability of some rocks to split along relatively smooth surfaces parallel to the bedding. This property observed mostly in fine-grained rocks is particularly expressed in outcrops, where rocks are subjected to weathering processes.

2023年1月1日 · Fissility is commonly defined in outcrops as the ability to split parallel to the stratification across relatively smooth, finely spaced surfaces. This structural property is revealed by rock decompression and weathering through the parting along weakness planes.

1980年11月1日 · Fissility is the tendency of a rock to split along relatively smooth surfaces parallel to the bedding (Pettijohn, 1975). Fissility is caused by laminations and the parallel orientation of the sheet minerals and organic material (Ingram, 1953; Gip- son, 1965; O'Brien, 1970; Pettijohn, 1975; Sears, 1976, and many others).

2021年12月5日 · A fissile rock tends to break along sheet-like planes that are nearly parallel to the bedding planes. Fissility is caused by the tendency of clay minerals to be deposited with their sheet structures ((001) crystallographic planes) parallel to the depositional surface.