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- W2387489301 abstract "Two types of Archean greenstione belts are exposed in the regions of northern Liaoning Province and southern Jilin Province Qingyuan type of greenstone belts includes Qingyuan and Jingchengdong regions Its primary rock formations consist of continuously differentiated volcano sedimentary rock series Greenstone sequence is composed of tholeiites,minor calc alkali basalt in low position and calc alkali andesite dacite rhyolite and sedimentary rocks in middle and upper part The palaeo tectonic settings for Qingyuan type of greenstone belt is the mobile zones in continental margin similar to that of modern island arc There are hosted a large amount of massive sulphide deposits,then iron deposits and gold deposits in the greestone belts Jiapigou type of greenstone belts mainly includes Jiapigou,Banshigou and Hunnan greestone belts Its primary formations consist of relatively differentiated volcano sedimentary rock series Greenstone sequence is composed of tholeiites,minor calc alkali basalt in low part and felsic volcanic rocks and sedimentary rocks in upper part Its palaeo tectonic settings for Jiapigou type of greestone belts is similar to rift in continental margin or volcano sedimentary basin in back arc environment There are a large amount of gold and iron deposits in the greenstone belts The greenstone belts had been mainly suffered regional metamorphism of low amphibolits facies (560± 60℃,0 4~0 59 GPa) and its forming time is 2500~2900 Ma Gold mineralization shows the metallogenic regularity of “one old era (Neoarchean Palaeoproterozoic) and one new era (Mesozonic) ” ;" @default.
- W2387489301 created "2016-06-24" @default.
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- W2387489301 date "1999-01-01" @default.
- W2387489301 modified "2023-09-25" @default.
- W2387489301 title "Archean Greenstone Belts in Northern Liaoning Province and Sorthern Jilin Province" @default.
- W2387489301 hasPublicationYear "1999" @default.
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