https://scholars.lib.ntu.edu.tw/handle/123456789/37520
標題: | 東亞地體構造演化整合研究 CREATE (III): 東亞地函動力與板塊互動─青藏高原岩漿活動研究(1/3) | 作者: | 鍾孫霖 | 公開日期: | 2004 | 出版社: | 臺北市:國立臺灣大學地質科學系暨研究所 | 摘要: | 本研究計畫設計為一個三年期計畫,架構於國科會整合型專題計畫CREATE (III)「東 亞地函動力與板塊互動研究」之下,將系統性地探討發生在青藏高原南部至喜馬拉雅山脈之 間主要的岩漿活動的演化細節及其所蘊涵的大地構造意義。印度和亞洲兩大陸塊的碰撞,是 地球新生代歷史中最重要的大地構造事件,被普遍認為足以對區域甚至全球性的環境造成若 干顯著的影響和衝擊。因此,這個大陸碰撞的過程以及它的直接結果–青藏高原與喜馬拉雅 山脈的形成和演化,多年來一直是國際地學研究的焦點。申請人和研究團隊約在兩年前開始 針對拉薩地塊東南部進行研究工作,目前已在該地區觀察到許多前人未見或誤解的地質現 象,還對整個青藏高原的岩漿活動與構造演化提出了一個新的模式。本研究計畫一方面根據 我們過去將近兩年來累積的經驗與初步研究成果,另一方面考量青藏高原極其遼闊的幅員和 從事野外考察時必須面對的先天限制及困難,擬在青藏高原南部以至喜馬拉雅山脈地區重點 性選擇目標,特別針對一些岩體和露頭,詳細進行野外工作與室內各項分析研究,以期獲得 更進一步的突破,繼續與國際領先團隊爭鋒,探索青藏高原乃至印度–亞洲大陸碰撞的演化過程及其對全球環境的衝擊。 This project is proposed as a 3-year project that, under the NSC integrated project CREATE-III “Mantle Dynamics and Plate Interactions in East Asia”, would perform a systematic investigation of selected magmatic rocks from the Lhasa terrane, the southern part of the immense Tibetan plateau. The collision of India with Asia, which resulted in the Tibetan-Himalayan orogen, marks the most important plate tectonics event in the Cenozoic Era of the Earth. The Tibetan plateau that represents the most outstanding natural lab for studying continental collisional orogenesis, and its impacts on the ocean and climate change, has been the subject of numerous investigations. Thus, a wide variety of hypotheses have been proposed for the Tibetan-Himalayan tectonic evolution. Our team started working on the geology of southeastern Lhasa terrane since about two years ago, from which we made some important new observations that, published or yet, have either never been reported or mis-interpreted by previous studies. We recently submitted an overview paper that proposes a new geodymanic evolution model for Tibetan magmatism and tectonism. If this project can be funded, it would be concentrated in detailed analysis of a few selected outcrops from the Gangdese batholith, Linzizong volcanic successions, and post-collisional ultrapotassic and adakitic magma bodies in the Lhasa terrane, southern Tibet. Such a selection is based on our working experience and primitive results obtained in the past two years. This study will be able to provide useful information for a comparative study that the proponent has been involved for years, which explores tectonomagmatic evolution in some older continental collision zones such as the one related to the Triassic collision between the North and South China Blocks. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/11853 | 其他識別: | 922119M002014 | Rights: | 國立臺灣大學地質科學系暨研究所 |
顯示於: | 地質科學系 |
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922119M002014.pdf | 32.69 kB | Adobe PDF | 檢視/開啟 |
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