摘要
磷灰石裂变径迹作为一种低温热史重建的研究手段,现已用来约束断裂带的活动时限。但是,通过分析发现,在磷灰石裂变径迹——断裂带活动时限研究过程中仍然存在诸多制约因素,以致对研究结果造成比较大的干扰。其中,诸如矿物自身特征(如矿物成分、各向异性等)、实验操作及解译模型的选取,这都无疑增加了磷灰石热史重建的难度;岩石热导率、火山等构造活动、地层孔隙水含量等因素,更是造成了地温变化的多种解释;在目标断裂构造运动解译过程中,更是需要排除气候、周边断层构造活动的影响。最后以实验操纵、自然热冷却、周边断层构造运动因素为例,基于前人研究提出相应的解决方法,尽量消除上述影响因素关于断裂带研究的干扰,以提高解释的科学性、合理性。
Apatite fission track is often applied to timing of fault movement,as a typical research method for low temperature thermal reconstruction.Several factors may bring large impacts onto the results of the method,such as the complication caused by mineral characteristics（composition,anisotropy）,manipulation procedures,and inversion models.It is even more complicated if taking account of different thermal conductivity of rocks,volcano activities,pore water content of the strata which are closely related to geothermal gradient.In addition,the climatic influence and the tectonic influence of adjacent faults have to be excluded in the fault activity timing.In order to improve the quality of results,we made some suggestions in this paper based on previous researches,such as the solutions to eliminate the interferences related to manipulation procedures,natural cooling and tectonic activity of adjacent faults.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2015年第2期101-109,共9页
Marine Geology & Quaternary Geology
基金
中国地质调查局项目(GZH200900504-217-3)
国家自然科学基金项目(41176038)
关键词
磷灰石裂变径迹
断裂带
活动时限
影响因素
apatite fission track
fault zone
timing of the movement
impact factors
作者简介
宫伟（1990-），男，硕士生，主要从事构造地质研究，E—mail：1310937054@qq．com
通讯作者：姜效典，xdjiang@ouc．edu．cn
