The age of individual analysis for zircon from the diorite unit ranges from (137±2) Ma to (1 58 士2) Ma, with a weighted average of (147.7±2.0) Ma, whereas that of the monzonitic porphyry ranges from (115±2) Ma to (164±3) Ma, with a weighted average of (144.5±8.9) Ma.

其中的閃長巖單元年齡為(137±2)~(158±2)Ma又爽又紧又湿A级视频，加權(quán)平均年齡為(147.7±2.0)Ma亚洲网在线，二長花崗斑巖為(115±2)~(164±3)Ma国产免费拍拍视频，加權(quán)平均為(144.5±8.9)Ma可以直接在线观看的AV。

Seven molybdenite samples from greisen ore body and quartz vein tungsten ore body associated with black tungsten ore were chosen for Re-Os isotopic dating and model age of (141.4±2.2) Ma~(158.2±2.2) Ma were obtained. The isochrone age of molybdenites from greisen type tungsten-tin ore body is (156.8±3.9) Ma, which indicates that its mineralogenetic epoch is at the Middle Jurassic, corresponds to the second stage of early Yanshanian period. And the model age for the samples from greisen ore body and from quartz vein ore body are (150.7±2.4) Ma~(158.2±2.2) Ma and (141.4±2.2) Ma~(151.0±2.4) Ma respectively, which indicates that the mineralization time of the quartz vein ore body is slightly earlier than that of greisen ore body.

文章選取云英巖型礦體及上部石英脈型鎢礦體中與黑鎢礦共生的輝鉬礦7件，進(jìn)行Re-Os等時(shí)線年齡測(cè)定免费观看黄色的视频在线看，得到其模式年齡為(141.4±2.2) Ma~(158.2±2.2)Ma欧美精品在线性爱视频，其中云英型鎢錫礦體中輝鉬礦等時(shí)線年齡為(156.8±3.9)Ma，成礦時(shí)代為中侏羅世，對(duì)應(yīng)于燕山早期第二階段天天操天天；從云英巖礦體中樣品模式年齡為(150.7±2.4)Ma~(158.2±2.2)Ma福利免费试看，石英脈型礦體中樣品模式年齡為(141.4±2.2)Ma~(151.0±2.4)Ma。

Block milliampere when be being set in 100 ma of large central issue, 200 ma, 300 ma, 400 ma, 500 ma respectively, wait to all appear identical breakdown.

將毫安擋位分別設(shè)在大焦點(diǎn)100 ma欧美人和牲口杂交在线观看、200 ma欧美亚洲另类图片、300 ma、400 ma欧美偷窥自拍、500 ma時(shí)等均出現(xiàn)相同故障草草影院欧美一区。

Using CHIME geochronological method, the zircons and monazites from the Caoshan and Lishugou plutons are dated. The PbO-UO2* isochron age and weighted average age of the Lishugou pluton are all (173±10) Ma. For the Caoshan pluton, the zircon PbO-UO2* and monazite PbO-ThO2* isochron ages are (178±8) Ma and (177±3) Ma, and their weighted average ages are (175±6) and (177±3) Ma, respectively.

運(yùn)用CHIME年齡測(cè)定方法對(duì)草山和梨樹溝巖體中的鋯石和獨(dú)居石進(jìn)行了年代學(xué)研究，獲得梨樹溝巖體鋯石PbO-UO2*等時(shí)線年齡和權(quán)重平均年齡均為(173±10)Ma欧美日韩综合久久精品A片app，草山巖體鋯石PbO-UO2*和獨(dú)居石PbO-ThO2*等時(shí)線年齡分別為(178±8)Ma和(177±3)Ma看av在綫，權(quán)重平均年齡分別為(175±6)Ma和(177±3)Ma。

Apart from the amphibolite enclaves and dyke swarms, the isotopic ages of the magmatic intrusions have been measured. The magmatic sequence and geochronologic framework are as follows: Quartz monzonite, 1825 ± 23 Ma, TDM = 2920Ma; Throndhjemite, 2374 ± 10 Ma, TDM = 3460 Ma; Tonalite, 2604±102 Ma, TDM = 3063 Ma; Monzonite, 3096±17 Ma, TDM = 2978 Ma; Granite, 3605±43 Ma, TDM = 3528 Ma.

在野外建立熱事件相對(duì)序列的基礎(chǔ)上欧美视频视频二区主播大秀，通過單顆粒鋯石U-Pb法測(cè)年和Sm-Nd同位素示蹤研究精品深夜福利视频无码精品社区，初步建立了該區(qū)早前寒武紀(jì)巖漿活動(dòng)的年代格架：石英二長巖：1825±23 Ma，TDM=2920 Ma欧美性爱视频黄片；奧長花崗巖：2374±10 Ma女人与拘性行为视频网站，TDM=3460 Ma；英云閃長巖：2604±102 Ma久久精品就只有精品99，TDM=3063 Ma九九青草视频；二長花崗巖：3096±17 Ma，TDM=2978 Ma亚洲欧美黄片日韩；花崗巖：3605±43 Ma久久精品亚洲精品无码白，TDM=3528 Ma亚洲色图无玛一区二区在线观看。

The plateau ages of three phlogopite samples from the Bailashui ore district are (150.6±1.0) Ma,(157.3±1.0) Ma and (154.7±1.1) Ma, respectively; and the plateau age of hydrothermal hornblende from the same mining district is (156.9±1.1) Ma.

研究結(jié)果表明久久影音先锋精品，白臘水礦區(qū)3個(gè)金云母樣品的40Ar/39Ar坪年齡分別為（150.6±1.0）Ma、（157.3±1.0）Ma和（154.7±1.1）Mawww.夜夜；熱液成因角閃石的坪年齡為（156.9±11）Ma99aaa视频。

The research leads to following conclusions: A The age of the ferromanganese contacting with the upper phosphate layer is 14.9 Ma; B The crust had been grown continually without sedimentation interruption since 14.9 Ma, suggesting that it can be used to rebuild the environment of palaeo-ocean and palaeo-climate from 14.9 Ma to 0 Ma; C The sedimentation interruption between the ferromanganese and the upper phosphate layer lasted around 4 Ma; D Between 19 Ma and 22.7 Ma, great phosphatization event happened in this area, which might cause the sedimentation interruption from 22.7 Ma to 14.9 Ma; E The ferromanganese crust began to grow from 75 Ma.

對(duì)超微量Sr同位素測(cè)試得到的富鈷結(jié)殼磷酸鹽年齡進(jìn)行分析認(rèn)為：(1)上部富鈷結(jié)殼與上層白色磷酸鹽化層接觸部位的年齡為14.9 Ma；(2)自14.9 Ma以來A级毛片免费无码真人，結(jié)殼的生長是連續(xù)的18岁禁止黄色網站，沉積間斷發(fā)生的可能性非常小，該樣品可以用來進(jìn)行14.9 Ma年以來古海洋在线观看欧美、全球變化的重建工作2020黄色视频；(3)上層白色磷酸鹽化層與其上部的富鈷結(jié)殼之間存在4 Ma的沉積間斷；(4)19 Ma~22.7 Ma左右在該區(qū)發(fā)生過大規(guī)模的磷酸鹽化作用日韩亚洲午夜在线影院，磷酸鹽化作用可能造成磷酸鹽化時(shí)期(19 Ma~22.7 Ma)和之后4 Ma(19 Ma~14.9 Ma)富鈷結(jié)殼的沉積間斷成a人片在线观看；(5)結(jié)殼的初始生長年齡在75 Ma左右；(6)老結(jié)殼的生長速度要遠(yuǎn)低于新結(jié)殼的生長速度。

Using the latest paleontological, magnetostratigraphic and chronological data and the lasting time of the high-resolution sequences, the authors have made a detailed chronostratigraphic division of the Jixi Group and determined the Jixi Group formed in the Early Cretaceous early Valaginian to middle Albian. In the group, the Didao Formation formed at 130.9±128.3 Ma, the Chengzihe Formation at 125.1±116 Ma, the Muling Formation at 116±106.9 Ma, and the Dongshan Formation at 106.9±101.7 Ma.

提要：利用最新的古生物黄色网站38无码、磁性地層年代資料及高分辨率層序延續(xù)時(shí)間推算毛片影片，對(duì)雞西群進(jìn)行了精細(xì)的年代地層劃分，確定了雞西群形成時(shí)間為早白堊世凡蘭吟早期—阿爾布中期人人干97精品，其中滴道組形成時(shí)間為130.9～128.3 Ma日韩手机自拍无码AV，城子河組形成時(shí)間為125.1～116 Ma，穆棱組形成時(shí)間為116～106.9 Ma黄色网站视频一区二区三区，東山組形成時(shí)間為106.9～101.7 Ma国产亚洲欧美。

Two episodes of uplifting in Jianghan basin occurred within 157～97Ma and 10~0 Ma; Xiang′exi-Wuling region and Qianzhong hights experienced an uplifting of 137~0 Ma; Exiyudong, Chuandong folds and Chuandongnan regions, 97~0 Ma; Chuandongbei and Chuanzhong regions, 56~0 Ma; Chuanxi and Dianxi areas 23~0 Ma. The general trend is that the onsets of uplifting for different tectonic units in the Mid-upper Yangtze area decrease westward.

江漢盆地在157～97Ma和10 Ma以來發(fā)生了兩期大規(guī)模抬升剝蝕；湘鄂西—武陵地區(qū)www.91色.com、黔中隆起自137Ma開始持續(xù)抬升剝蝕男女狂干日本黑网；鄂西渝東、川東褶皺帶從97 Ma開始持續(xù)抬升剝蝕日本黄色网站亚洲黄色网址；川東北和川中地區(qū)于56 Ma才開始遭受抬升剝蝕AAA级黄色国产在线播放；川西—滇西地區(qū)則自23 Ma以來經(jīng)歷了較大規(guī)模的抬升剝蝕。

Two episodes of uplifting in Jianghan basin occurred within 157～97Ma and 10~0 Ma; Xiang′exi-Wuling region and Qianzhong hights experienced an uplifting of 137~0 Ma; Exiyudong, Chuandong folds and Chuandongnan regions, 97~0 Ma; Chuandongbei and Chuanzhong regions, 56~0 Ma; Chuanxi and Dianxi areas 23~0 Ma.

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