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从秦岭主脊华山不同高度上采集了6个古生代花岗岩新鲜样品,进行了锆石和磷灰石裂变径迹热年代学研究,并用高差法和矿物对法来分析华山的抬升速率或剥露速率.初步结果表明,华山山体至少从中生代末约距今68.2 Ma就开始抬升,不同时段的抬升速率变化于0.02~0.19 mm/a(高差法)或0.12~0.16 mm/a(矿物对法)之间,平均抬升速率为 0.12 mm/a(高差法)或 0.14 mm/a(矿物对法).从距今约(17.8±2.0)Ma以来,华山处于相对快速抬升阶段,其平均抬升速率约为0.19 mm/a.
Six samples of Paleozoic granite samples were collected from different altitudes of the Huaxian main ridge in the Qinling Mountains. The zircon and apatite fission track thermal geochronology was studied, and the uplift rate and exhumation rate . The preliminary results show that the Huashan Mountain began to rise at least from the end of the Mesozoic at about 68.2 Ma, with the uplift rate varying from 0.02 to 0.19 mm / a (height difference method) or 0.12 to 0 at different time intervals. 16 mm / a (mineral vs. method) with an average lift rate of 0.12 mm / a (height difference method) or 0.14 mm / a (mineral method). Since about 17.8 ± 2.0 Ma, Huashan is in relatively rapid uplifting stage with an average lifting rate of about 0.19 mm / a.