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在加里东不整合面之上的华南纪盆系中,可识别出20个正层序和相对应的海平面变化旋回,其中下泥盆统9个,中泥盆统5.5个,上泥盆统5.5个。它们可归并为4个正层序组,最大海泛面分别位于sulcatus带(D_1~2),perbonus带(D_1~3),中、上varcus带(D_2~2)和gigas带(D_3~1)。对埃姆斯期和吉维期4个海平面变化的瞬间状态,进行了瞬时古地理再造。华南泥盆纪海平面变化节律可分为三类:自节律;全球性他节律、区域性他节律;耦合节律,它们分别发育于法门期;布拉格期、艾费尔期;洛赫科夫期、埃姆斯期、吉维期、弗拉斯期和法门期/弗拉斯期之交(F/F)事件期。处于相对干暖和宁静期的布拉格期和艾费尔期全球性他节律海平面变化的原因,难以用冰川和构造机制解释,可能与海洋盆地容积或地球体积的脉动膨缩有关。F/F事件期的耦合节律海平面变化是地内外因素、圈层协同行为和耦合效应的灵敏标志。
In the South China Jiulong system above the Caledonian unconformity, 20 positive sequences and corresponding sea level change cycles can be identified, including 9 in the Lower Devonian, 5.5 in the Middle Devonian, System 5.5. They can be grouped into four positive sequence groups, with the largest sea surface being located in the Dl ~ 2 sulcatus, Perbonus (D_1 ~ 3), middle, upper varcus (D_2 ~ 2) and gigas ). A transient paleogeographic reconstruction was carried out on the instantaneous changes in the sea level at the four Ames and Jevi periods. The seasonal changes of sea level in the Devonian in South China can be divided into three categories: self-rhythm, global rhythm, regional rhythm, and coupled rhythm, which respectively develop in Famenchian stage, Prague period, Irfair period, , The Ames period, the JV period, the Frisian and Famennian / Froschian period (F / F) events. The reasons for the sea level fluctuations of his global rhythm during the relatively dry and quiet periods of Prague and Eifel are hard to explain by glaciers and tectonic mechanisms and may be related to the pulsatile expansion of ocean basin volume or earth volume. Coupling Rhythm at F / F Event The sea level change is a sensitive indicator of internal and external factors, synergistic behavior of the ring and coupling effects.