广西桂林地区中上泥盆统斜坡相研究
Study on Slope Facies of Middle-Upper Devonian in Guilin Area, Guangxi
DOI: 10.12677/ag.2025.1510134, PDF,   
作者: 刘文才：桂林理工大学地球科学学院，广西 桂林
关键词: 广西桂林；中上泥盆统；斜坡相；Guilin of Guangxi； Middle-Upper Devonian； Slope Facies
摘要: 广桂林地区因为台盆相间的构造格局在晚泥盆世–下石炭世发育到达顶峰，导致其普遍发育连接台地和海盆的斜坡。这种在斜坡的不同位置因为其水深的变化，沉积岩岩相也不同。通过对桂林市近郊五条剖面的实测以及前人资料，归纳总结出晚泥盆世晚期海水深度的变化速率导致五指山组在区内尖灭；桂林地区台缘上斜破与下斜坡的区别可能在于榴江组岩相的不同；桂林北部地区的沉积环境相较于南部地区较为稳定。
Abstract: Due to the interlaced tectonic framework of the platform and basin, the development of the Guangguilin area reached its peak in the late Devonian-lower Carboniferous, resulting in the widespread development of slopes connecting the platform and the basin. Because of the change of water depth in different positions of the slope, the lithofacies of sedimentary rocks are also different. Based on the measured data of five profiles in the suburbs of Guilin and previous data, It is concluded that the change rate of seawater depth in the late Late Devonian led to the pinch-out of the Wuzhishan Formation in the area. The difference between the upper slope and the lower slope of the platform margin in Guilin area may be due to the different lithofacies of the Liujiang Formation. The sedimentary environment in the northern part of Guilin is more stable than that in the southern part.
文章引用：刘文才. 广西桂林地区中上泥盆统斜坡相研究[J]. 地球科学前沿, 2025, 15(10): 1443-1451. https://doi.org/10.12677/ag.2025.1510134

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