編號： 026

題名：台灣西南海域澎湖盆地之架構、地層及地體構造

Structural Framework, Stratigraphy and Tectonics of the Penghu Basin off Southwestern Taiwan

作者：俞何興

Yu, Ho-Shing

期刊名稱：台灣海洋學刊

卷期： 31

起迄頁：頁 54-64

出版日期： 1993.09

語文：英文

中文摘要： 澎湖盆地位於台灣海峽南部為一張裂盆地。其一側之始新世主要邊界斷層 , 造成了不對稱的盆地下陷及半地塹形貌。構造上澎湖半地塹屬於在台灣海峽長軸方向三個同向排列的半地塹之一。連接此三個半地塹則是調和帶 ( 澎湖及觀音隆起 ) 。此種半地塹連接方式可歸類為型式 3(Rosendahl,1987) 或同向型式 III(Morley 等 ,1990) 。盆地內之岩層可以畫分成五個震波層序 , 層序 I 、 II 、 III 及 IV 有正斷層存在並向主要邊界斷層傾斜 , 且局限在半地塹內。這些層序形成於同張裂期。反之 , 層序 V 的特徵以相當平緩未經變形的反射層為主 , 完全覆蓋在已被充填的半地塹之上。此層序主要由後張裂期的沈積物所組成。在台灣海峽區域地殼拉伸及張裂主要發生在始新世 , 形成澎湖半地塹 , 陸相的沈積物向主要邊界斷堆積增厚。進入漸新世之後 , 地殼張裂轉變為熱下陷 , 造成一個區域性不整合面 , 代表地殼運動的改變。在持續的熱下陷作用之下 , 開放性的海洋沈積物在中新世時擴展 , 其堆積範圍並覆蓋在已被充填的半地塹之上。張裂後期的沈積物厚達 1000 公尺以上 , 成為台灣海峽陸棚的一部分。

英文摘要： The Penghu basin is a rift basin beneath the southern Taiwan Strait shelf. It exhibits a major Eocene border fault, producing asymmetrical subsidence and half-graben morphology. Structurally, the Penghu half graben is one of three collinear half grabens along the axis of the Taiwan Strait rift. These half grabens are linked end-to-end by accommodation zones ( Penghu and Kuanyin Uplifts). The linking geometry of the half grabens can be considered to be Family 3 of Rosendahl (1987) or Synthetic III of Morley et al. (1990) in types. Strata of the Penghu basin are divisible seismically into five sequences. Sequences I, II, III and IV are faulted and tilted towards the border fault and are confined to the half graben. This stratigraphic succession belongs to a syn-rifting stage. It contrast, Sequence V is characterized by relatively unreformed flat, parallel and continuous reflectors which overlie and completely cover the underlying infilled half graben. This sequence consists of post-rifting sediments. The main crustal stretching and rifting occurred in the Taiwan Strait region during the Eocene, resulting in the formation of the Penghu half graben in which mainly non- marine sediments thickening towards the border fault. The late Eocene-Oligocene boundary, represented by a regional unconformity, marks the change from crustal rifting to passive thermal subsidence. Following the Miocene, widespread open-marine sediments distributed over the underlying infilled half graben. The post-rifting sediments are up to more than 1,000m thick and constitute parts of the Taiwan Strait shelf.

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編號： 035

題名：The Pescadores

作者：Chen C. S.
陳正祥

期刊名稱：Geographical Review of Japan
地理學評論

卷期： 26:1

起迄頁：頁 77-88

出版日期： 1953

語文：英文