本文關(guān)鍵詞：沖繩海槽及鄰區(qū)磁異常特征及其地質(zhì)解釋　出處：《海洋科學(xué)》2016年05期 　論文類型：期刊論文

  更多相關(guān)文章： 沖繩海槽 ΔT磁異常 化極磁異常 構(gòu)造地質(zhì)

【摘要】：對沖繩海槽及鄰區(qū)的ΔT磁異常特征進(jìn)行了定性分析和變緯度化極處理,通過對比ΔT磁異常和化極磁異常分布特征,對沖繩海槽及鄰區(qū)幾個構(gòu)造地質(zhì)學(xué)問題進(jìn)行了探討。沖繩海槽基底埋深較大,沉積中心位于海槽西部;釣魚島隆褶帶大規(guī)�；茁∑鸬哪隙私K止于漁山-久米斷裂帶,斷裂帶以南的東海陸架南部邊緣覆蓋了厚層沉積物;以漁山-久米斷裂帶、舟山-國頭斷裂帶和吐噶喇?dāng)嗔褞榇淼腘W-NWW向右旋平移斷裂帶在東海構(gòu)造演化過程中自西向東逐漸前展,對構(gòu)造應(yīng)力場起到了重要的調(diào)節(jié)作用,是東海"南北分塊"構(gòu)造格局中主要的構(gòu)造單元邊界;中新世以來臺灣碰撞造山作用引起了東海陸架南部主要構(gòu)造單元的順時針旋轉(zhuǎn);菲律賓海板塊的俯沖對琉球弧前地區(qū)的磁異常分布產(chǎn)生了顯著影響。
[Abstract]:The characteristics of the magnetic anomalies in the Okinawa trough and its adjacent areas are qualitatively analyzed and the latitudinal pole processing is carried out. By comparing the distribution characteristics of the T magnetic anomalies and the magnetic pole anomalies, several structural geological problems in the Okinawa trough and its adjacent areas are discussed. The Okinawa trough basement buried depth, sedimentary center is located in the Western trough; the Diaoyu Islands foldng zone at the southern end of large-scale basement uplift terminated in Yushan - Kume fault zone, with the southern edge of the South East China Sea shelf covering the thick layer of sediment to fracture; Yushan - Kume fault zone, Zhoushan - China head fracture and the Tokara fault zone NW-NWW fracture with right lateral translation represents the tectonic evolution in the East China Sea from west to east gradually before the show, the tectonic stress field plays an important role in the regulation of the East China Sea, "North South Block" boundaries of tectonic units main tectonic pattern in Taiwan; since the Miocene collision orogeny caused southern continental shelf of the East China Sea the main tectonic units in the clockwise rotation; Philippines sea subduction of the Ryukyu Island Arc area of the magnetic anomaly distribution has significant influence.
【作者單位】： 中國海洋大學(xué)環(huán)境科學(xué)與工程學(xué)院;青島海洋科學(xué)與技術(shù)國家實驗室海洋礦產(chǎn)資源評價與探測技術(shù)功能實驗室;青島海洋地質(zhì)研究所;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃項目(2013CB429701) 國家自然科學(xué)基金項目(41506080)~~
【分類號】：P736.1
【正文快照】： 沖繩海槽位于東海陸架與琉球島弧之間,是東海隆-坳相間構(gòu)造格局的重要組成部分,西以釣魚島隆褶帶與東海陸架盆地相隔,西南端緊鄰的臺灣山脈是全球最年輕的碰撞造山帶之一。對沖繩海槽及鄰區(qū)構(gòu)造地質(zhì)特征進(jìn)行研究,是揭示板塊俯沖背景下構(gòu)造運(yùn)動遷移、探索碰撞造山與弧后張裂相

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