Gold quartz vein is the major orebody which is controlled by E-W-extrusion fracture zone in the Damiaozi gold mineralized district.The granite-porphyry,spessartite and diabase are the major wallrock.
大庙子化区体以石英脉型为主,体的出受东西向挤压破碎带控,斑岩和闪斜煌斑岩、辉绿岩是体的主要围岩。
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Although there is some evidence of hard mineralized shells from this time, shells as we know them today become much more common after the Cambrian Explosion, which -- not coincidentally -- is when the first evidence of predators appears.
虽然有一些证据表明当时存在坚硬的矿化贝壳,但我们今天所知道的贝壳在寒武纪大爆发之后变得更加普遍,这并非巧, 也是捕食者出现的第一个证据。