isotopic dating 中文意思是什麼

isotopic dating 解釋
同位素測定年代
  • isotopic : adj. 同位素的。 isotopic abundance ratio 同位素豐度比。 isotopic spin 同位旋。adv. -ally
  • dating : n. 1. 記日期。2. 【商業】（支付的）延期日期。3. 〈美國〉幽會。
  1. Evidence from isotopic dating suggests that the greenstone belts vary considerably in age.

    來自同位素年齡鑒定的證據指出，綠巖帶在年齡上彼此變化相當大。
  2. New isotopic dating information in iran and its geological interpretation

    伊朗同位素研究新資料及其地質解釋
  3. Geochronological, geochemical and sr - nd isotopic data are reported for the alkaline igneous rocks ( syenites and zhaibei aluminous a - type granite ) and chebu gabbro in southern jiangxi province. shrimp zircon u - pb dating results indicate that the quannan syenite, zhaibei a - type granite and chebu gabbro formed during the early yanshanian period

    對贛南燕山早期的富堿火成巖（正長巖和寨背鋁質a型花崗巖）和車步輝長巖進行了詳細的年代學、元素和sr - nd地球化學研究。
  4. 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。
  5. By having conducted 40ar - 39ar dating of 35 samples and sm - nd dating of 19 samples from the linzizhong volcanic rocks, the post - collision volcanic rocks and a granite dike and the yarlung zangpo ophilite, the dissertation provides significant new data and results for optimizing the time framework of tectonic - magmatic event s of this region. according to isotopic dating of 9 samples, 12 experiments survey in the main trunk profile, the eruption age of the linzizhong volcanic rock in the linzhou basin has been determined as 54 - 64ma

    本論文通過35個樣品的~ （ 40 ） ar - ~ （ 39 ） ar及19個樣品的sm - nd同位素測年，獲得了關于俯沖?碰撞階段形成的林子宗火山巖、后碰撞火山巖與花崗巖及雅魯藏布蛇綠巖的同位素年齡數據，為完善研究區構造?巖漿事件的時間格架提供了新的資料與成果。
  6. Based on 16 230th dating ages and 1187 data of stable isotopic compositions as well as annual laminated sequences of the stalagmites, the author firstly presents the climate records of the past 2000 years in shennongjia region. by comparing the stalagmite record with historical records, lake sediments and pollen data, the author analyzes comparability and differences of climate change in east asia monsoon area and preliminarily investigates driven forces of climate change

    基於16個~ （ 230 ） th年齡、 1187個氧碳同位素數據分析和顯微巖相研究，首次建立了神農架高海拔地區近2000年氣候演化序列，通過與歷史記錄、湖泊沉積、孢粉資料對比分析了東亞季風區不同地區氣候演化的相似性和差異性。
  7. Abstract : based on the isotopic dating data of volcanics and recent research achievements of age boundary between jurassic and cretaceous systems, it is suggested that the volcanic series in shengyuan basin must be attributed to lower cretaceous

    文摘:本文根據盛源盆地火山巖同位素年齡數據和侏羅-白堊系界線年齡的最新研究成果，認為盛源盆地火山巖系的地層時代應屬早白堊世。
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