stylolite
/ˈstaɪləlaɪt/noun
1- Geology an irregular surface or seam within a limestone or other sedimentary rock, characterized by irregular interlocking pegs and sockets around 1 cm in depth and a concentration of insoluble minerals【地质】缝合线, 缝合面。
1.1
- a grooved peg forming part of such a seam（构成缝合线一部分的）石笔杆。
词源
mid 19th cent.: from Greek stulos 'column' + -LITE.