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題名 | Dating of the Plio-Pleistocene Rapidly Deposited Sequence Based on Integrated Magneto-Biostratigraphy: A Case Study of the Madagida-Chi Section, Coastal Range, Eastern Taiwan=利用磁地層與生物地層之整合來測定上新-更新世快速沉積之地層年代:以臺灣東部海岸山脈之馬達吉達溪剖面為例 |
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作者 | 洪崇勝; 謝凱旋; | 書刊名 | 中國地質學會會刊 |
卷期 | 39:1 1996.01[民85.01] |
頁次 | 頁31-58 |
分類號 | 352.6 |
關鍵詞 | 磁生物地層; 化石基準面; 地層缺失; 海岸山脈; Magneto-biostratigraphy; Datum level; Strata hiatus; Coastal range; |
語文 | 英文(English) |
中文摘要 | 利用磁地層與生物地層〔浮游性有孔蟲、鈣質超徵化石〕之整合,我們自海岸山 脈上新一更新世、快速沉積之馬達吉達溪剖面中,獲得了十二個定年資料的時間表。此一 剖面跨距的年代自小於3.40 Ma以迄約1.15 Ma,其中僅記錄一期的 Olduvai正向,厚約770 公尺。此外,位在礫石泥岩層中,有一長時期的地層缺失,其約始自2.92 Ma以至2.l Ma。 本研究對兩個浮游性有孔蟲化石基準面:FAD of Gr. truncatulinoides及 FAD of Gr. tosaensis 的層位亦作了修訂。 |
英文摘要 | Through the integration of magnetostratigraphy and biostratigraphy (planktonic foraminifera and calcareous nannoplankton), a high resolution time scale with twelve quantitative ages is obtained for the rapidly deposited sequence of the Plio-Pleistocene Madagida-chi Section, Coastal Range. The section ranging from <3.40 Ma to about 1.15 Ma contains only one normal magnetic polarity: Olduvai subchron which spans about 770m in thickness. In addition, a longterm strata hiatus located in the pebbly mudstone is dated from about 2.92 Ma to 2.1 Ma. Also, the stratigraphic levels of two planktonic foraminiferal datums: FAD of Gr. truncatulinoides and FAD of Gr. tosaensis are revised in this study. |
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