isochron dating 中文意思是什麼
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Undertaking isotopic geochronological study on ar - ar, adopted the fast - neutron activation dating technique to test 40ar - 39ar age of quartz from au - bering quartz veinlet ore in the deposit, and well - defined plateau age of 210. 59 ma ?. 92 ma, the lowest apparent age of 208. 07 ma ?. 22 ma, and isochron age of 207. 14 ma ? 1. 92 ma
通過流體包裹體顯微測溫學研究，表明金礦床的均一溫度成礦早階段為270 320 ，成礦主階段為170 250 ，成礦晚階段為110 250 ，呈逐漸降低的趨勢，低溫成礦作用明顯。
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