By employing sedimentary facies analysis on 3 outcrop sections and well-log stratigraphic studies the depositional systems and early development of the central Taiwan foreland basin have been established.

• 中文摘要台湾中部的桂竹林层沉积年代为晚中新世至早上新世，为台湾前陆盆地最老的地层，本层记录了由被动大陆边缘转变为前陆盆地的过程。