The basin tectonic model: it is intermont basin during late Jurassic to early Cretaceous, developed into faulted-lacustrine basin in Eogene, and evolved into depression in Neogene and Quaternary.
“盆地”构造发育模式为:从晚侏罗世到末期发育
山间“盆地”开始、发展到早第三
断陷湖盆
发育、再演化为晚第三
及第四
地陷发育阶段。