40 Ar/ 39 Ar isotopic ages of Qitianling granite and their geologic implications
作者： XU Jifeng , Wang Qiang , Deng Xiguang , Dai Tongmo , Liu Yimao
DOI: 10.1360/03DZ9027
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摘要: This paper has reported the first application of 40 Ar/ 39 Ar dating to orthoclase from Qitianling granite. The resultant plateau ages yielded by three specimens 2KL-17, 99LQ-2 and 2KL-31 (Note: last one was taken part granite which had been attributed Cailing super-unit Indosinian Period former researchers) collected said are (139.57±2.79) Ma, (140.55±2.81) Ma (144.91±2.90) respectively. above-mentioned represent closed age orthoclase. consistency in results, similarity geochemical characteristics rock textures, NW-SE orientation phenocrysts almost throughout granite, provide evidence for intimate relationship between Furong that form main suggesting they products comagmatic conjugate differentiation during Late Jurassic. also makes a comparison Qianlishan
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