论文部分内容阅读
磷灰石裂变径迹法年龄(fission-track ages)对轻微热力和构造干扰影响都是很敏感的。根据实验室焖火实验和采自深钻孔天然热标本进行年龄测定目前人们清楚,磷灰石的径迹法只有在整个地质时间里都在100℃以下的温度条件下才是稳定的。因此经常把磷灰石年龄解释成岩石冷却到此温度以下所记录的最后时间。因而,应用于区域规模上的磷灰石径迹法年龄测定能得出太古宙地盾区低温热力史和地壳稳定性的新观点。
Apatite fission-track ages are sensitive to the effects of mild thermal and structural disturbances. Age determination based on lab simmer experiments and natural thermal specimens taken from deep boreholes It is now clear that the apatite track method is stable only at temperatures below 100 ° C throughout the geological time. Apatite ages are therefore often interpreted as the last time recorded by rock cooling below this temperature. Therefore, apatite dating applied to the regional scale can lead to a new viewpoint of the history of low temperature thermal history and crustal stability in the Archean Shield Zone.