isochron age 中文意思是什麼

isochron age 解釋
等齡線法年齡
  • isochron : 等時線
  • age : n 1 年齡。2 成年〈滿廿一歲〉。3 老年，晚年。4 壽命；終生，一生。5 時代，時期，年代。6 〈口語〉很...
  1. Undertaking isotopic geochronological study on ar - ar, adopted the fast - neutron activation dating technique to test 40ar - 39ar age of quartz from au - bering quartz veinlet ore in the deposit, and well - defined plateau age of 210. 59 ma ?. 92 ma, the lowest apparent age of 208. 07 ma ?. 22 ma, and isochron age of 207. 14 ma ? 1. 92 ma

    通過流體包裹體顯微測溫學研究，表明金礦床的均一溫度成礦早階段為270 320 ，成礦主階段為170 250 ，成礦晚階段為110 250 ，呈逐漸降低的趨勢，低溫成礦作用明顯。
  2. The results of combined internal mineral separates and whole - rock sm - nd isochron age for gabbro dikes from : luobusha, angren and xiubugabu in yarlung zangpo ophilite zone are 177ma, 166ma and 173ma respectively. the 4lar - 39ar step heating spectra of rikangba ophiolite suggest that its formation age is also isoma. it indicates that there was a stronger regionally inagmatism during middle - early jurassic, and the time of i75ma was the main period of the magmatic event of yarlung zangpo ophilite

    對鄔郁盆地嘎扎村組火山巖剖面的年代學研究表明，該區后碰撞期火山巖的~ （ 40 ） ar - ~ （ 39 ） ar年齡為12 ? 14ma ，侵入其中的花崗巖脈的~ （ 40 ） ar - ~ （ 39 ） ar年齡為10 . 84ma ，與岡底斯西段前人研究資料對比，認為岡底斯帶后碰撞火山巖時代有自西向東逐漸年輕的趨勢。
  3. Apparent isochron age

    視等時年齡
  4. The internal mineral separates and whole - rock sm - nd isochron age for gabbro dikes from the dangqiong ophiolite is 373 ? 8ma, inferring a magmatic activity during late devonian, which end ( t ) = + 3. 3 suggests that its tectonic setting was probably oceanic island

    其nd （ t ） = + 3 . 3 ，認為其時形成環境為洋島，可能代表了新特提斯蛇綠巖形成時所攜帶的古老洋殼。
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