Study Of Thermoluminescence Characteristics Of The Volcanic Rocks In Xujiaweizi Region, Daqing Oil Field

Volcanic rocks thermoluminescence research is that we can't find information at home and abroad. On the base of developing system observation description of deep-seated complex lithology (lava and pyrocalstic rock ) core of 13 compressive fracture specialty wells. Selecting representative sample, we made the research of petrology and whole rock thermoluminescence in detail. We have main production as follows:1. There are two kinds: one is lava, the other is vocaniclastic rock.. The lava includes basalt, basaltic andesite, pore almond andesite, trachyandesite and rhyolite et al.. Vocaniclastic rocks include natural vocaniclastic rock subtype, transitional vocaniclastic rock subtype from lava and transitional vocaniclastic rock subtype from sedimentary rock. The first rock is mainly andesite clinkering agglomerate, andesite breccia, dacite breccia, rhyolite breccia and rhyolite clinkering tuff. The second rock is mainly breccia lava and conglomerate lava. The third rock is deep volcanic breccia, deep tuff and tuff sandstone et al..2. For the first time, we make use of thermoluminescence technique to demarcate variegation boulder bed which is the district corresponding period sediment guiding bed, the top appear multilayer ash tuff which have similar thermoluminescence parameter;under variegation boulder bed, thermoluminescence character is "top-bottom rhythm domino effect", this signs that every late phase volcano eruptive material have heat alteration action to consume part of radiate accumulate.3. The main factor which the volcanic rocks thermoluminescence character in whole rock in the area is influenced is mineral constitutes which is quartz, feldspar, fluorite and carbonate mineral et al., and heat event in the course of forming rock.All kinds of rock represent different thermoluminescence curves character.4. We do the thermoluminescence research systemly for deep volcanic rocks section, this will possibly demarcate eruptible gyration and evolvment character. Comparing with thermoluminescence charactar of different volcanic rocks section, we will confirm eruptible stage to contrast in volcanic rocks stratum.