【摘要】：中國東部中生代巖漿活動強烈,熱液型鈾礦分布廣泛�？臻g上,自北而南可劃分出大興安嶺、小興安嶺-長白山、冀北-遼西、大別山北緣、長江中下游、揚子陸塊東南緣、武夷-云開、東南沿海8個火山-侵入巖帶和沽源-紅山子、青龍-興城、廬樅-棲霞、贛杭、武夷山、桃山-諸廣、郴州-欽州、湘中、雪峰山-摩天嶺9個熱液型鈾成礦帶以及滿洲里-額爾古納、扎蘭屯、伊春、金寨、天目山5個鈾成礦遠(yuǎn)景帶;時間上,從早到晚可劃分出250~230Ma、228~205Ma、195~175Ma、165~150Ma、145~130Ma、126~115Ma、110~100Ma、97~80Ma 8個不同時期的巖漿活動和早期深源高溫、晚期淺源低溫兩個成礦系統(tǒng),深源高溫成礦系統(tǒng)可劃分出11個礦床式,淺源低溫成礦系統(tǒng)可劃分出15個礦床式�？辈槌晒@示,熱液型鈾礦對巖漿巖的巖性巖相沒有選擇性,但與特定時期的巖漿巖有密切的關(guān)系,其中與花崗巖有關(guān)的熱液型鈾礦主要賦存在三疊紀(jì)花崗巖中,與火山巖有關(guān)的熱液型鈾礦主要賦存在早白堊世早期高鉀鈣堿性流紋巖-堿性粗面巖組合中,而且晚期高侵位小巖體或火山斑巖體的內(nèi)、外接觸帶是有利的賦礦部位。
[Abstract]:Mesozoic magmatic activity in eastern China is strong and hydrothermal uranium deposits are widely distributed. Space, from the north to the south can be divided into Daxing'an Mountains, Xiaoxing'anling to Changbai Mountains, Hebei to Western Liaoning, the northern margin of the Dabie Mountains, the middle and lower reaches of the Yangtze River, the southeastern margin of the Yangtze block, and Wuyi to Yunkai. Eight volcanoes-intrusive rock belts and Guyuan-Hongshanzi, Azure Dragon-Xingcheng, Lu Zong-Qixia, Ganhang, Wuyishan, Taoshan-Zhuguang, Chenzhou-Qinzhou, central Hunan, along the southeast coast, Nine hydrothermal uranium metallogenic belts in Xuefengshan-Ferriling Mountains and five uranium metallogenic potential zones in Manzhouli Erguna, Zalantun, Yichun, Jinzhai and Tianmu Mountains; From morning to evening, the magmatic activity and early deep source high temperature in different periods can be divided into two ore-forming systems of 250 ~ 230Ma-228-205Ma-195N, 175Ma-165- 150 Ma-145- (145-) 130Ma, 126- 115Ma-115-Ma-100Ma-9780Ma, and two ore-forming systems of late shallow source and low temperature. The ore-forming system of deep-source high-temperature can be divided into 11 ore-forming systems, and the ore-forming system can be divided into 11 ore-forming systems. The shallow source low temperature metallogenic system can be divided into 15 ore deposit types. The exploration results show that hydrothermal uranium deposits are not selective to the lithofacies of magmatic rocks, but are closely related to magmatic rocks in a specific period, in which hydrothermal uranium deposits related to granites mainly occur in Triassic granites. The hydrothermal uranium deposits related to volcanic rocks are mainly located in the early Cretaceous high-potassium calc-alkaline rhyolite-alkaline trachyte assemblages, and the inner and outer contact zones of the late high-emplacement small rock bodies or volcanic porphyry bodies are favorable ore-hosting sites.
【作者單位】： 東華理工大學(xué)核資源與環(huán)境國家重點實驗室培育基地;東華理工大學(xué)地球科學(xué)學(xué)院;中國科學(xué)院地質(zhì)與地球物理研究所;
【基金】：國家自然科學(xué)基金項目(41372071) 中國核工業(yè)集團(tuán)公司項目(中核地計[2008]74號)聯(lián)合資助
【分類號】：P588.1;P619.14

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