摘要
Single-grain zircon U-Pb analyses, combined with Sm--Nd, Rb--Sr, K--Ar and <sup>40</sup>Ar-<sup>39</sup>Ar datingresults, suggest that there are four magmatic periods in Wanyangshan--Zhuguangshan granitoidbatholith, i.e. late Caledonian （414--434 Ma）, Indosinian （220 Ma）, middle Yanshanian （155 Ma）and late Yanshanian （105 Ma）. The tectonic movement characterized by the unconformablecontact between Mid--Devonian and Pre--Devonian occurred about 380 Ma ago. Magmation istightly related to the regional crustal movement.
Single-grain zircon U-Pb analyses, combined with Sm--Nd, Rb--Sr, K--Ar and ^(40)Ar-^(39)Ar dating
results, suggest that there are four magmatic periods in Wanyangshan--Zhuguangshan granitoid
batholith, i.e. late Caledonian (414--434 Ma), Indosinian (220 Ma), middle Yanshanian (155 Ma)
and late Yanshanian (105 Ma). The tectonic movement characterized by the unconformable
contact between Mid--Devonian and Pre--Devonian occurred about 380 Ma ago. Magmation is
tightly related to the regional crustal movement.
