Puas yog granite radioactive?
May 04, 2021
Puas yog granite radioactive? Muaj. Puas yog granite radioactive teeb meem? me ntsis.
Dab tsi yog yam uas cuam tshuam rau qib radioactivity ntawm granite?
Geological muaj hnub nyoog
Feem ntau hais lus, cov pob zeb loj loj granite feem ntau yog cov pob zeb nyuaj uas tsim los ntawm ntau qhov kev cuam tshuam hauv ib lub sijhawm lossis ntau lub sijhawm. Los ntawm qhov kev xav ntawm lub sijhawm, los ntawm Pre-Sinian mus rau Cenozoic, granites tshiab yuav raug tsim nyob rau hauv txhua qhov kev txav tectonic. Qhov no yeej muaj qhov tseem ceeb ntawm kev tsim cov granite radioactivity theem. Vim hais tias, los ntawm qhov kev xav ntawm genesis, feem ntau ntawm cov pre-Sinian granites tau tsim los ntawm metasomatism, thaum lub granites ntawm Yanshanian thiab tom qab ntawd tau dominated los ntawm magma zog, uas coj cov khoom siv hluav taws xob los ntawm qhov sib sib zog nqus crust mus rau saum npoo. Ib txoj hauv kev tseem ceeb. Yog li ntawd, los ntawm qhov ua tau zoo tiag tiag, qhov tshiab ntawm lub hnub nyoog geological, qhov siab dua cov xov tooj cua ntawm granite. Los ntawm ultrabasic, yooj yim, nruab nrab, acidic rau alkaline, cov ntsiab lus ntawm radium, thorium, thiab potassium maj mam nce. .
2. Kev hloov pauv
Kev hloov pauv yog hais txog cov txheej txheem uas cov pob zeb thiab cov ntxhia tau raug rau hydrothermal kev ua haujlwm los tsim lub cev thiab tshuaj lom neeg tshiab, uas hloov cov qauv, qauv, thiab muaj pes tsawg leeg ntawm cov pob zeb qub los tsim cov pob zeb tshiab. Reflected nyob rau hauv granite, lub acidic igneous pob zeb nyob rau hauv lub fractured cheeb tsam yog nquag hloov lithological nyob rau hauv qhov kev txiav txim ntawm kub kub, ua rau chloriteization, sodium zoisiteization, epidoteification, sericitization, carbonation, micro hloov ntawm plagioclase, orthoclase, feldspar thiab ice feldspar. Hauv cov txheej txheem no, tungsten, tin, beryllium, niobium, tantalum, porphyry tooj liab, molybdenum, thiab cov av tsis tshua muaj feem xyuam nrog granite feem ntau mined. Yog li ntawd, hom pob zeb no nce ib qho nyiaj ntawm cov xov tooj cua.
3.Lithofacies, pob zeb siv
Zoo sib xws rau geological hnub nyoog thiab kev hloov pauv, tseem muaj lithofacies thiab pob zeb siv. Raws li granite yog tsim, qhov kub thiab txias tej yam kev mob yog txawv, thiab magma ntsiab kuj txawv. Yog li ntawd, nyob rau hauv ib cheeb tsam sib txawv ntawm ib lub pob zeb loj, cov nplej loj thiab xim ntawm cov ore feem ntau sib txawv, thiab cov ntsiab lus ntawm cov khoom siv hluav taws xob yog qhov sib txawv. Zoo ib yam. Feem ntau hais lus, cov ntsiab lus ntawm cov khoom siv hluav taws xob hloov pauv hauv cov pob zeb loj dua, thiab qis dua nyob rau hauv nruab nrab thiab marginal theem. Qhov teeb meem no tseem ceeb dua nyob rau hauv cov pob zeb loj nyob rau sab qab teb nrog ntau yam kev ua ub no.
Qib radioactivity ntawm granite tiag tiag nyob ntawm cov ntsiab lus ntawm radionuclides radium, thorium, thiab poov tshuaj nyob rau hauv cov pob zeb ntxhib thiab tus nqi rho tawm ntawm radon. Cov kev tshawb fawb tau pom tias qhov kev faib tawm ntawm radium, thorium, thiab potassium hauv pob zeb yog pom tseeb cuam tshuam los ntawm lub hnub nyoog geological, kev hloov pauv thiab lwm yam. Lithofacies thiab pob zeb siv yog qhov thib ob. Nyob rau hauv txhua rooj plaub, nws yuav tsum tau taw qhia tias nyob rau hauv feem ntau ntawm cov granite khoom tsim nyob rau hauv Tuam Tshoj, cov kev ua ub no ntawm lub ntuj radionuclides radium, thorium, thiab poov tshuaj yog ua raws li cov kev cai ntawm Class A cov ntaub ntawv kho kom zoo nkauj, thiab tsuas muaj ib tug. ob peb cov khoom siv granite. Cov khoom no yog cov khoom siv kho kom zoo nkauj hauv chav kawm C. Ntxiv mus, piv nrog rau lwm cov ntaub ntawv hauv tsev, ntuj granite feem ntau yog compact thiab loj, thiab radon extraction tus nqi kuj tsawg. Yog li ntawd, siv nws los ua kev kho kom zoo nkauj rau sab hauv tsev thiab sab nraum zoov chav nyob yeej muaj qhov zoo tshaj plaws daim ntawv thov kev cia siab.
