元古宙 meaning in Chinese
proterozoic eon
Examples
- ( 3 ) jianchaling ultrabasic intrusion belongs to magnesian ultrabasic simple rock - body , close related with yangzi block in space , which formed in the interim of proterozoic active tectonic zone to phanerozoic orgenic belt
( 3 )证实煎茶岭超基性岩体为含铁的镁质超基性单式岩体，空间上与扬子地块关系密切，形成于新元古代由元古宙活动带向显生宙造山带过渡时期。 - Dongzigou ag deposit and jianbaoshan au deposit are hosted in the sandstone of middle - proterozoic suberathem , which are developed from the proterozoic sediment metal source - rocks formed during the meso - proterozoic volcanism and reworked by the mesozoic tectono - magmatism during the formation of the metamorphic core complexes in eastern hebei . the dongzigou ag deposit has the characteristics of reformed strata - bound origin , the jianbaoshan au deposit , located in the detachment fault , is the alterated rock type . both deposits have the similar wall - rock alteration , and show the same trace element behavior , and ree patterns . they are the results of the multi - stage tectono - magmatism in the environment of continental extension in eastern hebei region . their mineralization depended on their wall rocks and relative location in metamorphic core complexs
赋存于中元古宙长城系常州沟组的洞子沟银矿床和尖宝山金矿床是由密云-都山变质核杂岩构造体系所控制的一组矿床。其成因为中元古宙火山岩浆活动形成的沉积矿源，后经中生代的变质核杂岩构造岩浆体系叠加改造而成。洞子沟银矿床具有层控迭加改造的特点尖宝山金矿床则具有破碎蚀变岩型矿床的特点。