海泛事件与凝缩层段是当代层序地层学和旋回层序地层学研究热点之一.凝缩层段(Condensed sedion,CS)是厚度很薄的一个海相地层单位,由沉积速率极缓慢的深海相和半深海相沉积物构成,在区域分布上,它们在最大海泛期延伸最为广泛.它是鉴别最大海泛事件的重要标志.近年来作者在华北地台早古生代地层中发现了陆表海盆地中海绿石质凝缩层 Sea-level events and condensation zones are one of the hot topics in contemporary sequence stratigraphy and cycle sequence stratigraphy.Condensed sedion (CS) is a thin unit of marine strata composed of sedimentary velocity Slow deep-sea facies and semi-deep marine sediments, and they are most widely extended in the maximum sea-level period in the regional distribution, which is an important symbol for identifying the largest sea-water event.In recent years, the authors found in the Paleozoic strata of the North China Platform The Mediterranean surface chlorophyll condensate layer of the continental shelf