摘要
在研究和分析缝合线成因假说的基础上,提出将缝合线的成因类型划分为两大类四亚类:原生缝合线,包括同生(沉积)缝合线和唯同生(成岩)缝合线;次生缝合线,包括构造缝合线和非构造缝合线。在观察和研究各地、各地区时代地层中的缝合线构造的基础上,指出了原生缝合线和次生缝合线各具不同的地质标志。
On the basis of analysing the genetic theories of stylolites, the authors divide stylolites into two types and four subtypes: original stylolite,including the contetn-poraneous(depcsit)stylolite and penecontemporaneous(diagenetic)stylolite; secondary stylolite, including structural stylolite and non-structural stylolite.The original stylolite is marked by specified position and regional distribution. It may be taken as mark of strata.The density and scale of the stylolite are related to the sedimentary rhythm of ths strata with stylolites. The undissolved residues inside the stylolite seam have fine bedding which is parallel to the stratification plan.The lithologies with well-developed original stylolite are often impure carbonate rocks,in which the distribution of flint noddles is controlled by the stylolite.The geological marks of the secondary stylolite are that it occurs without a definite lithology,either in limestones or other rocks.The non-structural stylolite distributes disorderly in rocks and the pillar pyramid of the structrural stylolite is coincident with direction of the regional structure axis.The stylolite may cut ooide,nodule,fossil and calcite vein, etc…
关键词
缝合线
构造
成因
类型
stylolite, genetic type, coastemporaDeous,penecoritemporaneous, sub-grown
