缝合带，也称“缝合线”，地质学术语，是指大的断层区域，分隔开了具有不同板块构造起源的地体、地质构造单元。[1]这一术语源自外科学的引申使用。
缝合带的露頭的宽度从几百米到若干千米。可以是网状的糜稜岩剪切区或脆性断裂区。缝合带通常是火成岩侵入与透镜状的构造，在岩石学上属于从深成岩到蛇绿岩组分。
参考文献
- ^ There is a "difference between the geophysical and geological definition of suture zones and terrane boundaries. The geophysical definitions are generally based upon the integration of a physical response over the thickness of the crust, whereas the geological definition is almost always as a line or zone at the Earth's surface." Harris, Anthony L. and Fettes, D. J. (1988) The Caledonian-Appalachian orogen published for the Geological Society by Blackwell Scientific Publications, Oxford, England, page 4, ISBN 978-0-632-01796-6
