The results suggest that natural TL of the three samples with known depth positions had depth distribution such as meteoritic cosmogenic nuclides, which was smaller with increasing distance from the current surface, indicating the conditions of cosmic ray exposure of the Jilin chondrite.

對(duì)3個(gè)已知取樣深度和3個(gè)未知取樣部位的吉林隕石樣品的熱釋光研究表明免费观看A级毛片在线网站，其自然熱釋光值具有宇宙成因核素含量相似的性質(zhì)即深度分布效應(yīng)日韩欧美亚洲视频在线，隨著樣品距離表面位置的增大而降低国产av精选久久久，這表征了母體暴露期間宇宙射線的分布狀況人人草黄色视频在线。

Cosmogenic nuclide surface exposure dating is a newly developed isotopic dating technique in the past few years.

宇宙成因核素地表暴露測(cè)年方法欧美精品在,欧美一区二区，是近年來(lái)迅速發(fā)展起來(lái)的一種新的同位素地質(zhì)年代學(xué)方法国产www视频。

This paper introduces the features of ideal samples for analysis of in-situ-produced cosmogenic nuclide s of 10Be and 26Al.

著重介紹原地生成宇宙成因核素10Be和26Al理想樣品的特點(diǎn)、野外采集注意事項(xiàng)亚洲欧美熟妇另类久、實(shí)驗(yàn)室分離與純化以及加速器質(zhì)譜測(cè)量用靶樣制備等www.mmm在线观看。

There is an introduction to Mars meteorites, and detailed descriptions of individual Mars meteorites. Each document about the individual meteorites contains all existing information such as petrography, whole rock and mineral chemistry, radiogenic, cosmogenic and stable isotope data and weathering.

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Using peculiar horn-shaped antennas, U-2 wrecker planes, satellites and particle accelerators, scientists hit tardily pieced unitedly the cosmogenic jigsaw, and this movie charts the resistless grounds for a aggregation created by a Big Bang.

使用新奇的角狀天線18进禁男女爱免费网站，U-2間諜飛機(jī)，衛(wèi)星和粒子加速器国产精品美女久久9999，科學(xué)家們漸漸拼織出了宇宙理論XXXXX欧洲熟妇XXXX，本紀(jì)錄片為您展示支持"創(chuàng)世宇宙大爆炸"理論的壓倒性證據(jù)。

Based on technical processing of high-resolution SPOT images and aerophotos, detailed mapping of offset landforms in combination with field examination and displacement measurement, and dating of offset geomorphic surfaces by using carbon fourteen (14C), cosmogenic nuclides (10Be 26Al) and thermoluminescence methods, the Holocene sinistral slip rates on different segments of the Altyn Tagh Fault are obtained. The slip rates reach 17.5 mm/a on the central and western segments west of Aksay Town, 11 mm/a on the Subei—Shibaocheng segment, 4.8 mm/a on the Sulehe segment and only 2.2 mm/a on the Kuantanshan segment, a easternmost segment of the ATF. The sudden change points for loss of sinistral slip rates are located at the Subei, Shibaocheng and Sulehe triple junctions where NW-trending active thrust faults splay from the ATF and propagate southeastward.

在高分辨率SPOT衛(wèi)星數(shù)字影像和大比例尺航片處理色综合网中文综合网色综合网、斷錯(cuò)地貌制圖欧美中文二区、野外核實(shí)與位移測(cè)量基礎(chǔ)上，利用宇宙成因核素（10Be久久久久久国产精品无码超碰2020、26Al）一级绝黄A片AAA片、碳十四（14C）和熱釋光等多種測(cè)年手段，厘定了各斷錯(cuò)地貌面的形成年齡机械有限后入高潮，得到了阿爾金斷裂帶不同段落全新世左旋走滑速率：阿克賽以西的中超彭免费、西段左旋走滑速率可達(dá)17.5 mm/a，肅北—石包城段為11 mm/a左右国产精品国产亚洲精品看下卡，疏勒河口段減少到4.8mm/a左右欧美BBW撒尿特写，東端寬灘山段僅約2.2 mm/a，左旋走滑速率突變點(diǎn)位于阿爾金斷裂帶中東段存在分支活動(dòng)逆斷層向南東擴(kuò)展的肅北欧美一级A片全视频、石包城和疏勒河等三聯(lián)點(diǎn)上久久精品国产91久久综合麻豆自制。

Cosmogenic 21Ne was utilized to determine exposure ages of young subaerial basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia.

宇宙中產(chǎn)生的21氖被用來(lái)測(cè)定從澳大利亞的西部維多利亞新火山省流出的地面玄武巖熔巖的暴露年齡。

The concentration of Cosmogenic nuclides is not only constrained by production rates and exposure time, and also closely related to surface erosion. Furthermore, the concentration is affected by geomagnetic intensity, shielding, chemical weathering, and sample geometry as well. These factors affecting Cosmogenic nuclide concentration should be calibrated when surface exposure age is calculated.

地表物質(zhì)中宇宙成因核素濃度除了受到核素生成速率和地表物質(zhì)的暴露時(shí)間制約外国产精品超碰，還與地表侵蝕速率密切相關(guān)欧美亚洲免费二区，此外，地磁場(chǎng)強(qiáng)度射射射射射射综合网、遮蔽免费天堂a片免费看、化學(xué)風(fēng)化及樣品的幾何位置等也會(huì)對(duì)核素濃度產(chǎn)生一定影響，在求算樣品的地表暴露年代時(shí)男女深夜福利视频网站，應(yīng)對(duì)這些因素進(jìn)行相應(yīng)的校正a欧美亚洲电影图片迅雷下载。

Specifically measured cosmogenic 3He/21Ne ratios, on the same samples, is powerful for evaluating the validity of calculated cosmogenic 3He and 21Ne surface exposure ages.

對(duì)同一樣品進(jìn)行具體的3氦/21氖比例測(cè)定，是評(píng)價(jià)3氦和21氖表面暴露時(shí)間計(jì)算值有效性的有力工具

Cosmogenic nuclides are primarily generated by reaction of target nuclei exposed near earth surface and galactic cosmic radiation. The reactions producing Cosmogenic nuclides mainly involve spallation, capture of neutrons and muon reaction.

宇宙成因核素主要是由來(lái)源于銀河系的宇宙射線與暴露于地表的物質(zhì)作用形成的三级片小视频在线播放，作用機(jī)制主要包括裂變欧美色综合,色综合、中子捕獲和介子反應(yīng)。