1999 年的921 集集地震，車籠埔斷層給台灣地區帶來極大的生命財產損失，也引起各界對地體構造與斷層活動的重視，筆者亦擬就地球化學分析方法探討斷層活動。沉積地層中的植物殘體經深埋與成巖作用後逐漸分解重組，埋藏過程中的成巖作用、地殼變動使有機體受溫度、壓力刺激而逐漸成熟，此過程為不可逆反應，不受退化變質影響，可紀錄埋藏史上最強烈的熱事件，煤巖成分與鏡煤素反射率、膜煤素螢光光譜及元素組成均已被證實可反應此溫壓資料。本計劃擬採集TCDP 鑽井巖心內有機質及圍巖，分析鏡煤素反射率、膜煤素螢光光譜、圍巖元素成分，完成車籠埔斷層之縱向地溫與元素變化圖，據以瞭解斷層位置與受熱機制，進而研判斷層活動與危害潛能。 The 1999.9.21. Chi-Chi earthquake, caused by Chelungpu Fault, led to a tremendous life and property loss in Taiwan, also aroused the attention to tectonic structures and fault activity by geochemical methods. The plant remains in sedimentary strata gradually decompose and rearrange their organic molecules after deep burial, diagenesis, and tectonic activities. In other words, the plant macerals turn to be more matured out of the increasing temperature and pressure during thermal maturation. Furthermore, the maturation process is irreversible, not influenced by retrograde metamorphism, can only record the maximum thermal event in the burial history. Maceral composition, vitrinite reflectance, liptinite fluorescence spectrum and elemental composition had been proved to reflect this thermal/pressure information successfully. The project is planned to collect organic remains and rock samples from the cores of TCDP Chelungpu Fault well. The organic material will be treated and prepared into polished pellets according to ASTM procedures. Maceral composition, vitrinite reflectance, fluorescence spectrum and elemental analysis will be performed. The fault-initiated thermal distribution along the well profiles will then be derived so as to understand the fault displacement and thermal mechanism. Final suggestion will be beneficial for the fault activity and earthquake hazard potential studies. 研究期間：9308 ~ 9407
