缝合线齿纹的生长取决于法向应力和有限压实作用
Growth of stylolite teeth patterns depends on normal stress and finite compaction
摘要：
岩柱是在许多岩石类型中发现的壮观的粗糙的溶解表面。尽管有许多研究，但它们的起源仍然存在争议，特别是它们形成的时间尺度以及这个时间与它们形态之间的关系。我们开发了一种新的离散模拟技术来探索缝合线粗糙度的动态增长，从最初平坦的溶解表面。我们证明，典型的陡峭缝合线牙齿的几何形状可以准确地建模和再现自然图案。粗糙度的增长发生在两个连续的时间制度：i）在时间上遵循幂律的粗糙度幅度的初始非线性增加，直到ii）粗糙度幅度饱和并保持恒定的临界时间。
英文摘要：
Stylolites are spectacular rough dissolution surfaces that are found in many rock types. Despite many studies, their genesis is still debated, particularly the time scales of their formation and the relationship between this time and their morphology. We developed a new discrete simulation technique to explore the dynamic growth of the stylolite roughness, starting from an initially flat dissolution surface. We demonstrate that the typical steep stylolite teeth geometry can accurately be modelled and reproduce natural patterns. The growth of the roughness takes place in two successive time regimes: i) an initial non-linear increase in roughness amplitude that follows a power-law in time up to ii) a critical time where the roughness amplitude saturates and stays constant.
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