![]() For the beach sand sample, detrital zircon ages show six peaks at ca. The results suggest that a significant Triassic (235 Ma) metamorphic event is recorded by monazite but not zircon. ![]() ![]() For the Cambrian metasandstone sample, detrital zircon displays a wide age range between 4 Ma, while monazite grains record a single age peak of 235 Ma. To shed new light on this issue, we present an integrated geochronological and isotopic study of detrital zircon and monazite from Cambrian metasandstones and modern beach sands in the Yangjiang region, SE China. Widespread Paleozoic and Mesozoic granites are characteristics of SE China, but the geodynamic mechanisms responsible for their emplacement are an issue of ongoing debate.
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