Gold source is from Caledonian and Hercynian granite.

该区金直接来源于加里东和华力西花岗岩.

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Its age determined by Rb - Sr isochron is 306 Ma , suggesting that it was formed at Hercynian.

据Rb -Sr 等时线测定,其年令值为306Ma, 说明它形成于海西期.

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The geologic history of the South China developed into a new stage in the Hercynian - Indochina period.

海西 - 印支期,华南地质构造发展进入新的阶段.

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Intrusions, especially Late Hercynian and Early Yanshanian intrusions , are widespread in Dongwuqi area , Inner Mongolia.

东乌旗地区岩浆岩分布广泛,以华力西晚期与燕山早期最为发育.

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Late Hercynian intrusions are dominated by acid granites with small amount of diorite.

华力西晚期以酸性花岗岩为主,另有少量闪长岩.

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