现代地质Issue(5)：1131-1136,6.
磷灰石裂变径迹与结晶C轴的夹角对模拟热历史的影响
Effects of Fission-track Angle to Crystallographic C Axis in Apatite on Thermal History
摘要
Abstract
Thermal histories modeled from apatite fission-track(FT)data are dependent upon the annealing beha-vior of apatite fission-tracks.It has been confirmed that the rate of fission-track annealing correlates with apatite structure and the annealing rate is faster for fission-tracks with higher angle to crystallographic C axis,so different rates of fission-track annealing will eventually lead to different length distributions.In this study,the apatite fis-sion-track length C axis projection model was used to eliminate the effects of different angles to crystallographic C axis,and then the difference of thermal histories modeled from apatite fission-tracks with the same length and dif-ferent angle to crystallographic C axis was discussed.This paper has showed that the largest difference of the maxi-mum palaeo-geotemperatures among the modeling history is 15 ℃,and the largest difference in the erosion amount,cooling uplift rate and initial uplift time is 430 m and 1.5 ℃/Ma,respectively.And the result reveals that the largest difference of initial uplift time in each tectonic movement can reach up to 2 Ma.In the actual ther-mal history simulation,we should pay more attention to the influence of this parameter.Ideally,the angles of each apatite fission-track to crystallographic C axis should be measured to improve the thermal history precision.关键词
磷灰石裂变径迹/结晶方位/热史模拟Key words
apatite fission-track/crystallographic orientation/thermal history simulation分类
天文与地球科学引用本文复制引用
焦亚先,邱楠生,阙永泉..磷灰石裂变径迹与结晶C轴的夹角对模拟热历史的影响[J].现代地质,2013,(5):1131-1136,6.基金项目
国家自然科学基金项目（91114202，41125010，41072103）。 （）
