前言 南盘江地区地跨滇、黔、桂三省,是西南地区油气勘探瞩目的地区之一。地史上从晚二迭世到三迭纪都是强烈的沉陷区,周围被古、中生代发育的一些古隆起(或古陆)包围,面积约二十万平方公里。 本文着重对晚二迭世沉积相和火山碎屑岩成因进行研讨,重点放在南盘江断槽盆地区(图1)。 Foreword Nanpanjiang region across Yunnan, Guizhou and Guangxi provinces, is one of the areas of interest in Southwest oil exploration. Historically, from the late Permian to the Triassic they were all intense subsidence areas surrounded by ancient paleo-Proterozoic or ancient land developed by the Mesozoic and Cenozoic, with an area of ​​about 200,000 square kilometers. This paper focuses on the Late Permian sedimentary facies and volcaniclastic origin of the discussion, with emphasis on the Nanpanjiang basin basin (Figure 1).