四川地质学报
四川地質學報
사천지질학보
Acta Geologica Sichuan
2015年
3期
460-465
,共6页
(U-Th)/He%磷灰石%包裹体%不均匀分布
(U-Th)/He%燐灰石%包裹體%不均勻分佈
(U-Th)/He%린회석%포과체%불균균분포
U-Th)/He%apatite%size and morphology of grain%inclusion%inhomogeneity of U and Th distribution
磷灰石(U-Th)/He 定年作为一种有效的低温热年代学定年技术,现已被广泛应用于地质研究的各个领域,而该技术测定的样品年龄会受到多方面因素的影响,其中磷灰石性状的影响尤为突出.通过归纳总结目前国内外磷灰石(U-Th)/He定年研究中,样品性状和成分、磷灰石颗粒尺寸及形貌、包裹体、147Sm含量、辐射损伤、U和Th不均匀分布等性状因素影响的研究进展,研究这些因素对测定年龄的影响及降低影响的方法.
燐灰石(U-Th)/He 定年作為一種有效的低溫熱年代學定年技術,現已被廣汎應用于地質研究的各箇領域,而該技術測定的樣品年齡會受到多方麵因素的影響,其中燐灰石性狀的影響尤為突齣.通過歸納總結目前國內外燐灰石(U-Th)/He定年研究中,樣品性狀和成分、燐灰石顆粒呎吋及形貌、包裹體、147Sm含量、輻射損傷、U和Th不均勻分佈等性狀因素影響的研究進展,研究這些因素對測定年齡的影響及降低影響的方法.
린회석(U-Th)/He 정년작위일충유효적저온열년대학정년기술,현이피엄범응용우지질연구적각개영역,이해기술측정적양품년령회수도다방면인소적영향,기중린회석성상적영향우위돌출.통과귀납총결목전국내외린회석(U-Th)/He정년연구중,양품성상화성분、린회석과립척촌급형모、포과체、147Sm함량、복사손상、U화Th불균균분포등성상인소영향적연구진전,연구저사인소대측정년령적영향급강저영향적방법.
As an effective low-temperature thermochronometer method, apatite (U-Th)/He dating technique has been widely applied to the geological research. However, quality and composition of the apatite sample such as size and morphology of grain, inclusions,147Sm content, radiation damage, inhomogeneity of U and Th distribution and so on have an influence on accuracy of detection. This paper has a discussion on the influences of these factors on apatite(U-Th)/He dating and the methods to reduce the influences.
