Hercynian

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.

And ( 2) correspond to a geosynclinal regime with geosynclinal folding and closing ( Hercynian), while ( 3) corresponds to a diwa regime ( epi-Hercynian).

在区域大地构造的关系上：①、②对应于地槽褶皱、封闭的地槽体制（海西期），③对应于地洼体制（后海西期）。

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.

Geohistory simulation indicates: since Cambrian, Bachu area had experienced the transforming from depression to uplift. Present tectonic uplift began in Hercynian and formed in the Himalayan.

地史模拟结果表明：自寒武纪以来，巴楚地区大致经历了由坳陷至隆起和由稳定的斜坡到活动的前缘隆起的转变，现今构造隆起形态发端于海西期，定型于喜山期。

The ore-forming age of the deposit is 339 ± 10 Ma, being of Hercynian too. The petrogenic age is earlier than the ore-forming age, possibly suggesting that the rock body provided heat for the deposit.

在时间上，寒山金矿的成矿时代为339±10Ma，与寒山辉长岩同属华力西期，而且成岩时代早于成矿时代，因此推测寒山辉长岩可能为寒山金矿提供了热源。

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.

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.

The faults in work area are mainly in EW 、 NE 、 NW and formed during Caledonian-Hercynian, offering favorable channels for petroleum's migration and controlling the formation and growth of traps.

研究区主要发育加里东期&海西期近EW、NE向、NW向断裂，为油气运移提供良好的通道，同时控制着圈闭的形成与发育。

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.

After the Hercynian polycyclic tectonic movement and migration from land to ocean, this trough gradually closed from west to east from The end of early Permian.

这一海槽经海西多旋回构造运动和离陆向洋迁移，于早二叠世末期由西向东逐步封闭。

Its contents are similar to those of EM ⅰ OIB from the Gough islands, and show ocean island alkaline basalt characteristics including the discriminant diagrams of tectonic settings for volcanics, which implies that the Hercynian volcanics were formed in tectonic environment of ocean island.

以其不相容元素比值，相当于Gough岛EMⅠOIB型洋岛玄武岩，其构造环境判别图进一步印证了海西期火山岩形成于洋岛碱性玄武岩环境。

The mother rocks of copper deposit in Sanchakou are quartz diorite ( porphyrite) and quartz-mica-diorite-porphyrite of marginal facies from quartz-diorite and diorite rock body of middle Hercynian.

三岔口铜矿含矿主岩为海西中期石英闪长岩&闪长岩体边缘相石类闪长（玢）岩和英云闪长斑岩。