編號： 013

題名：澎湖沈積盆地的地質及地球物理綜合解釋

Integrated Geological and Geophysical Interpretation of the Penghu Sedimentary Basin

作者：章懋棟

Chang, Maodon

期刊名稱：台灣石油地質

卷期： 27

起迄頁：頁 237-250

出版日期： 1992.12

語文：英文

中文摘要： 塔瓦尼二維模型方法使用於澎湖沈積盆地一條地球物理測線之磁力資料 , 模型結果證明澎湖盆地下的火成岩基盤地殼為過渡型 , 這個過渡型地殼由 10-20 公里厚的花崗岩和侵入的玄武岩組成。模型亦證明先始新世、早至中期始新世及早至中期中新世時本區域有間歇性張力構造運動。模型中有一個切過火成基盤的玄武岩脈 , 該玄武岩脈可能代表澎湖沈積盆地形成初期的分裂中心或分裂中心的一部分。

英文摘要： Talwani's two-dimensional modeling was run on the magnetic data of one of the geophysical survey lines of the Penghu sedimentary basin. The result of the model shows that the igneous crust beneath the Penghu sedimentary basin is transitional, which is composed of granite of 10-20km thick with intruded basalt. The model also offers evidence for intermittent extensional tectonic phases in pre-Eocene , early-middle Eocene, and early-middle Miocene. A basaltic dike cutting through the granitic igneous basement is observed in the model. It could be a part of the initial rifting center(s) of the Penghu sedimentary basin.