Application of Double and Triple Dating of Zircons to Sediment Provenance Studies and to Quantifying Recycling in Sedimentary Rocks

双重和三重年代测定是美国国立大学和耶鲁大学令人兴奋的新突破，它们可以比现有技术更准确地识别河流和沉积岩中的沉积物来源。它们在研究侵蚀、追踪钛矿床中重矿物的来源以及确定含有石油的沉积序列的来源方面具有基本的应用。在有利的条件下，双重定年法也可用于无化石沉积物的定年，这在石油勘探中有直接的应用。

Double and triple dating are exciting new ANU-Yale breakthroughs that can be used to more accurately identify the source of sediment in rivers and sedimentary rocks than is possible using existing techniques. They have fundamental applications in the study of erosion, tracing the source of heavy minerals in titanium deposits and in determining the source of sedimentary sequences that host oil. Under favourable circumstances double dating can be used also to date sediments that are devoid of fossils, which has direct application in oil exploration.