Based on many previous studies of the Buqin Mountain, A′nyêmaqên and Kuhai-Sêrtang ophiolitic mêlange zones in the junction between the two orogenic belts and through further survey and isotope chronological study, the authors find that the three ophiolitic mélange zones are not independent but form a typical triple junction with respect to the composition, textures and structures, geometry and isotope chronology, i.e. the Qinling-Kunlun triple junction.

本文在前人對發(fā)育于兩造山帶銜接區(qū)的布青山18岁以下禁看的黄色网站、阿尼瑪卿以及苦和计∷登砝嗉で樾Ｔ埃—賽什塘3條蛇綠構造混雜帶大量研究的基礎上www.国产黄，通過進一步的調查以及同位素年代學研究發(fā)現(xiàn)欧美国产88，這3條蛇綠構造混雜帶并非相互獨立存在99日视频这里只有精品，它們在物質組成东南亚高清无码视频、結構構造、幾何形態(tài)二级A片视频在线、同位素年代學特征上構成較為典型的三向聯(lián)結構造资源站先锋，即秦—昆三向聯(lián)結構造。

Many methods for sample preparation have been applied in stable isotope measurements of ostracode shells from lake sediments. However, for stable isotope measurements of biocarbonate samples, different methods will probably affect the resolution, reproducibility and inter-laboratory comparison of the measurement results.

由于湖泊生物碳酸鹽樣品不同的前處理方法可能會影響到穩(wěn)定同位素測試結果的重現(xiàn)性和辨析率以及實驗室之間數(shù)據(jù)的可比性就去色色五月天，采用有效的方法對介形蟲殼體進行預處理是保證介殼穩(wěn)定同位素剛試的一個關鍵環(huán)節(jié)国产亚洲二区。

Stalagmite; carbon stable isotope;oxygen stable isotope;palaeoclimatic significance

王建明，王建力一级a一级a爰片免费啪啪外国，李廷勇中文關鍵字：石筍99riav.c0m；碳穩(wěn)定同位素；氧穩(wěn)定同位素一本导一区av；氣候意義

And influences of contamination on Sr isotope and LILEs are more evident than those on Nd isotope and REEs.

同化混染對Sr同位素和大離子親石元素的影響程度大于對稀土元素和Nd同位素的影響程度国产高清在线看AV网站免费。

The study indicates that the stalagmitic oxygen isotope records are identical with the sea isotope record.

表明石筍氧同位素記錄和海洋同位素記錄一樣，也可以明顯地按峰天天日天天干天天摸、谷劃分為MIS5c日韩性色加勒比在线观看，MIS5d ，MIS5e及MIS6多個氣候階段亚洲日本在线看片，界線年齡分別為：5c/ 5d為 110 男女猛烈无遮挡免费视频在线观看。0kaBP ，5d/ 5e為 12 0 国产一级一区真人无码播放视频。0kaBP 国产高清久久久久久久，5e/ 6為 12 9.2kaBP。

In general, the distribution of stable carbon and nitrogen isotopes revealed the mixing inputs of terrigenous and marine organic matter controlled the stable carbon and nitrogen isotope compositions in sedimentary organic matter. However, a series of physical, chemical and biogeochemical processes occurring in the local environments had also the significant influence on the stable carbon and nitrogen isotope compositions in organic matter.

研究區(qū)域內久久久久一级精品免费观看，穩(wěn)定碳丁香花色色网、氮同位素的地區(qū)分布和季節(jié)變化特征揭示，有機質中穩(wěn)定碳九九九在线精品视频、氮同位素組成不僅受陸源和海源有機質輸入量之間消長變化的影響真人av在线免费看，同時一系列的生物地球化學過程、人為有機質的輸入和沉積物粒度與葉綠素含量對碳国产馆在线观看、氮同位素組成均存在一定的改造作用妓女在线网。

A total of 29 groups of isotope age data such as Sr-Nd isotope age data and Nd model age data of igneous rocks, including granites, volcanic rocks, dyke swarms, cumulates, and ophiolites, formed in different periods of time are reported in this paper, which show the following two features:(1) igneous rocks including ophiolites formed in this area since 800 Ma BP all have high eNd and low Sri, with most Sri values centered in the range of 0.7045 to 0.7060 and eNd values in the range of 1 to 5, and (2) most of the TDM ages are in the range of 800 to 600 Ma, with only a few at 1000 Ma.

收集了本區(qū)不同時期形成的各類火成巖，包括花崗巖久草手机视频在线观看、火山巖色、操国产、巖墻群免费一级黄色A片、堆晶巖、蛇綠巖的Sr－N等30組同位素數(shù)據(jù)免费的日韩精品视频在线观看，從中可以看到以下兩個特征：①研究區(qū)從800Mr以來形成的包括蛇綠巖在內的火成巖都有高εNd低Sri的同位素特征性爱舔欧美网站，絕大多數(shù)Sri集中在0.7065～0.7060之間，eNd集中在1～5之間日韩午夜第一页在线播放观看。②TDM年齡較多集中在800 ～600 Ma黄免费观线看，個別為1000 Ma。

A total of 29 groups of isotope age data such as Sr-Nd isotope age data and Nd model age data of igneous rocks, including granites, volcanic rocks, dyke swarms, cumulates, and ophiolites, formed in different periods of time are reported in this paper, which show the following two features:(1) igneous rocks including ophiolites formed in this area since 800 Ma BP all have high eNd and low Sri, with most Sri values centered in the range of 0.7045 to 0.7060 and eNd values in the range of 1 to 5, and (2) most of the TDM ages are in the range of 800 to 600 Ma, with only a few at 1000 Ma.

TDM年齡較多集中在800 ～600 Ma人人妻人人干人人操黄色影网站，個別為1000 Ma精品中文字幕一区二区三区四区。

In the medical isotope reactor to separate and purify the medical isotope 99Mo and 131I, the reactive heat is constantly generated in the process of reaction, associated with the production of fission gas. In order to control the average temperature (usually≤80℃) of the reactor to prevent the sample from volatilizing, the cooling system of the reactor need to be designed carefully.

在使用醫(yī)用同位素反應堆分離提純醫(yī)用同位素99Mo和131I時，由于反應過程中會不斷產(chǎn)生熱量并伴隨裂變氣產(chǎn)生黄片在线免费看A片，為了控制堆內平均溫度(通逞侵奕仍谙吖劭矗≤80℃)以使樣品不致?lián)]發(fā)，這就需要精心設計反應堆的冷卻系統(tǒng)不卡无码av一区二区丝袜。

This implies a major stage of crustal growth in Proterozoic time and remelting of the crustal material in Early Jurassic time;(5) The Oligocene-Miocene adakites contain magmatic zircons that show similar Hf isotope compositions to the Cretaceous-Paleogene Gangdese batholiths, providing a key constraint that allows evaluation of the nature and timing of crustal thickening in southern Tibet owing to the India-Asia collision; and (6) As a whole, the Hf isotope information observed in zircons from the above Transhimalayan rocks demonstrates a temporal variation in εHf values, and thus TDMC ages, that suggests multiple stages of orogenic or crustal formation events.

五激情文学欧美图片乱伦、漸新世、中新世的埃達克巖在线视频亚洲日韩，其巖漿鋯石的鉿同位素特徵與白堊紀午夜欧美福利视频、古第三紀岡底斯巖漿相似，因而為藏南在印亞碰撞以后国产成年精品,免费视频大全，地殼增厚的時間與機制提供了關鍵性的制約99在线视频播放；六、綜觀上述藏南火成巖中的鋯石日本最新免费二区三区，它們與時變化的鉿同位素初始值及其對應的模式年齡記錄了拉薩地塊多階段的造山與地殼形成歷史亚洲欧美有码中文字幕。