2020-01-082024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/664546摘要：本計畫為執行中央地質調查所推動之4年期「臺灣東北部礦產地質調查－震測及地質構造調查研究」工作，透過震測與地質構造調查在臺灣東北部海域進行礦床成因、資源類型與賦存潛能之調查與探勘研究，一以了解東北海域受海底火山活動產生的熱液換質作用是否亦有金屬硫化礦物的資源潛能，二則以震測與地質構造調查資料進而討論東北海域的地質背景與地體構造形貌，來推測地質活動作用在東北海域金屬礦產生成中所扮演的角色。本計畫為延續自民國105年起推動前期「臺灣東北海域礦產資源潛能調查」4年計畫，根據過去四年的成果，已在臺灣東北海域的南沖繩海槽區域選定了六處優先多金屬熱液硫化礦床潛能場址。本期計畫除了希望能透過進一步的調查分析工作，精進臺灣東北部南沖繩海槽區域完整的海域礦產及地質構造模型，並建立數值構造位置資訊外，也將針對前期尚未進行的臺灣東北部、北部近海區域進行地質調查，以達到加深掌握及瞭解臺灣東北部礦產地質的區域性分布及地質構造之目的。為能達成計畫目標，本計畫結合了過去執行中央地質調查所「臺灣東北部海域礦產資源潛能調查」團隊，主要包含臺灣大學海洋中心及海洋研究所團隊，其中計畫主持人許鶴瀚助理教授、研究員劉家瑄教授、江協堂助理教授（宜蘭大學）有多年相關經驗，除了將進一步掌握及瞭解臺灣東北部礦產地質的區域性分布及地質構造之目的外，本年度工作也將彙整並分析調查區域內既有的反射震測資料，並再深入分析上期計畫所收集超過1,200公里的MCS1205、MCS1220反射震測資料，同時比對水深地形資料，進行地質解釋，建構數值斷層構造位置檔，也將為下一年度的海上調查工作進行準備。另外在「礦產資源資料庫」部分，本計畫將負責中央地質調查所本期「臺灣東北部礦產地質調查」整個計畫（包含本計畫在內的三個主計畫）之統整、規劃與協調工作，並且維護、更新及優化東北海域礦產地質調查成果資料庫(含一個地理資訊系統及MySQL資料庫)及資訊網。另外也將追蹤國際間熱液礦產資源研究的進展，除了能達到本計畫調查成果資料保存與加值應用之目的外，也可藉由國際的調查及研究現況的瞭解，作為本計畫工作執行之參考。<br> Abstract: This proposal, entitled “Geological investigation of mineral deposits in northeastern Taiwan - Seismic and geological structure surveys”, seeks the support for executing the first year of the 4-year marine mineral resource investigation project of the Central Geological Survey (CGS). This project is the second phase of previous 4-year project “Geological Investigation of Mineral Resource Potential in the Offshore Northeastern Taiwan: Seismic and Heat Flow Studies” (2016-2019). There are two major objectives of this new project: 1. to explore the mineral resource potential in the investigation area where submarine volcanic activities are prevailing; and 2. to understand the relationships between geological/tectonic processes and mineral resources in the study area. Based on previous works, six high potential hydrothermal mineralization fields have been identified. For better understanding of these hydrothermal sites and related structures, team members from Ocean Center and Institute of Oceanography, National Taiwan University will further analyze over 1,200 km seismic profiles including MCS1205 and MCS1220 dataset collected in the previous phase. By analyzing the existing seismic data, we will also prepare cruise scheduled in the next year. Moreover, this project will integrate seismic and bathymetry data analyses results to identify and understand geological structures in Southern Okinawa Trough, and produce digital fault structure data for geological map offshore northeastern Taiwan. This project is also responsible for establishing and maintaining the marine mineral resource database for the CGS main project which consists of 3 investigation projects including this one. This database consists of a GIS database system, a MySQL database for geological and geochemical data, and a web server for data search and inspection. All available data and newly collected data by the three investigation projects will be preserved, integrated and provided to all the project team members. In addition, we will continue to gather international information on the progresses of hydrothermal mineral resource investigations and developments to help us getting better understanding of mineral resource potential in the investigation area.臺灣東北海域礦產資源熱液系統反射震測地質構造斷層Offshore Northeastern TaiwanMineral ResourceHydrothermal SystemReflection SeismicGeological StructureFault臺灣東北部礦產地質調查-震測及地質構造調查研究(1/4)