凝缩层

凝缩层（condensed section）又称密集段、浓缩层、缓慢沉积段，是海侵最大时期在大陆棚、大陆坡和大洋盆地沉积形成的的半深海和深海沉積物Catuneanu, Octavian (2011). "Sequence stratigraphy: methodology and nomenclature". Newsletters on Stratigraphy. E. Schweizerbart'sche Verlagsbuchhandlung.44(3): 190。這時海域最廣最深，陸源物資最遠，故沉積速率最低，厚度很薄，碎屑顆粒也最細。因缺乏陆源物质，故所含有机质，古生物相對較高。由岩石露頭Monroe, J. S., and Wicander. R. 1997.The Changing Earth: Exploring Geology and Evolution, 2nd ed. Belmont: West Publishing Company, 1997, pp. 112 - 113 ISBN 0-314-09577-2，岩芯及測井曲綫 Oresajo, B., et al. 2015.Sequence stratigraphy and structural analysis of the Emi field offshore depobelt, Eastern Niger Delta Basin, Nigeria. 2015, Ife Journal of Science, vol. 17
宋子齐等人，2009. 利用自然电位与自然伽马测井曲线划分沉积相带及储层分布。地球物理学进展 Vol. 24 ›› Issue (2): 651-656.doi: 10.3969/ j.issn.1004-2903.2009.02.038.
均可認出，在地震剖面上亦可由最高上超點及其反射面認出 Van Wagoner, J.C., 1988. AN OVERVIEW OF THE FUNDAMENTALS OF SEQUENCE STRATIGRAPHY AND KEY DEFINITIONS.SEPM Special Publication ISBN 0-918985-74-9。
參考文獻

Category:沉積學