铀矿地质
鈾礦地質
유광지질
URANIUM GEOLOGY
2014年
5期
276-282
,共7页
铀矿化特征%新生代盆地%剑川%老君山
鈾礦化特徵%新生代盆地%劍川%老君山
유광화특정%신생대분지%검천%로군산
characteristics of uranium mineralization%Cenozoic basins%Jianchuan Laojunshan
剑川老君山新生代盆地是以上三叠统石钟山组为基底，以新近系剑川组为主要盖层的继承性火山断陷盆地。剑川组为一套粗面岩、凝灰岩、火山角砾岩、集块熔岩、凝灰质砂岩、岩屑砂岩等组成的火山沉积岩系。研究发现，剑川老君山盆地的铀矿化受区域性断裂及火山构造的复合控制。盆地内已发现有凝灰岩型、砂岩型、正长斑岩型、花岗斑岩型、粗面岩型和花岗伟晶岩型等6种类型的铀矿化，具有良好的找矿前景。
劍川老君山新生代盆地是以上三疊統石鐘山組為基底，以新近繫劍川組為主要蓋層的繼承性火山斷陷盆地。劍川組為一套粗麵巖、凝灰巖、火山角礫巖、集塊鎔巖、凝灰質砂巖、巖屑砂巖等組成的火山沉積巖繫。研究髮現，劍川老君山盆地的鈾礦化受區域性斷裂及火山構造的複閤控製。盆地內已髮現有凝灰巖型、砂巖型、正長斑巖型、花崗斑巖型、粗麵巖型和花崗偉晶巖型等6種類型的鈾礦化，具有良好的找礦前景。
검천로군산신생대분지시이상삼첩통석종산조위기저，이신근계검천조위주요개층적계승성화산단함분지。검천조위일투조면암、응회암、화산각력암、집괴용암、응회질사암、암설사암등조성적화산침적암계。연구발현，검천로군산분지적유광화수구역성단렬급화산구조적복합공제。분지내이발현유응회암형、사암형、정장반암형、화강반암형、조면암형화화강위정암형등6충류형적유광화，구유량호적조광전경。
Jianchuan Laojunshan Cenozoic basin is an inheritance one which lies on the basement of Tri-assic Shizhongshan group and is covered by Neogene Jianchuan group.Jianchuan group is a set of volcanic sedimentary rocks composed by trachyte, tuff, volcanic breccia, agglomerate and lava, tuffaceous sandstone,lithic sandstone.Uranium mineralization was found in six types rocks,Tuff,sandstone,sy-enite porphyry,granite porphyry,trachyte and granitic pegmatite in the basin.Studies shew that Jian-chuan basin is with good exploration potential.Due to the combined effects of regional faults,volcanic activity and volcanic structure.
