“前寒武系褶皱基底”是什么意思

俺是咱村最靓的娃2022-10-04 11:39:541条回答

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xzdsf 共回答了16个问题 | 采纳率87.5%: 在前寒武纪（就是寒武纪之前）地球上不同的地点不断有岩浆喷发,形成微弱的结晶基底（雷同于现今的火山作用形成的大洋中岛屿）,随着喷发作用的继续,这些结晶基底不断扩大,直至寒武纪之后,这些基底发生了褶皱变形作用,上面沉积了盖层（说白了,就是后期的沉积物,与其下的沉积物的主要区别在于年代久远与否以及是否经过早期的褶皱变形作用）,二者之间存在着明显的不整合界面；于是把在前寒武纪形成的那些经过了褶皱变形作用的基底称为“前寒武系褶皱基底”.
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英语翻译赣北地区钒矿的野外识别郑华（江西省地矿局912大队地勘院）摘要：江西北部出露的寒武系下统王音铺组黑色页岩中富集了 英语翻译 赣北地区钒矿的野外识别 郑华 （江西省地矿局912大队地勘院） 摘要：江西北部出露的寒武系下统王音铺组黑色页岩中富集了大量的钒元素,其中分布着许多具有经济价值的钒矿床.由于钒矿床品位较低,矿体与围岩岩性相同,肉眼难以分辨,给野外实际工作带来极大的不便.笔者曾在九江彭泽、湖口、修水等三县从事过钒矿勘查工作,对钒矿的野外识别积累了一定的经验.本文将从“一定会有”、“一定不会有”、“可能会有”、“可能不会有”等四个方面来具体阐述钒矿的赋存规律和野外识别. 关键词：赣北地区钒矿床黑色页岩野外识别 马河生1年前3: a383351563 共回答了14个问题 | 采纳率100%

Vanadium ore field identification in north Jiangxi province
zhenghua
(Bureau of Geology and Mineral Resources Geological Exploration Institute of the 912 Battalion in jiangxi)
abstract:
shale of foot length of Cambrian System wangyinfu group in north jiangxi has a large number of vanadium element enrichment,which is the distribution of many of the economic value of vanadium deposit.it is hard to tell
vanadium deposit from others in naked eyes because of its low grade and the same ore body as the surrounding rock,which brings great inconvenience to field work.the writer has ever done vanadium ore prospecting work in Jiujiang,Hukou,Pengze three counties and has gained certain experience in field identification of vanadium ore.this passage is going to state the vanadium ore occurrence and field identification in "there must be","there mustn't be","there may be"and"there may not be"four aspects.
key words:
northern jiangxi province
vanadium deposit
black shale
Field recognition

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“前寒武系褶皱基底”是什么意思

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