After a brief discussion on Earth system science, the author puts forward two viewpoints of the study of metallogeny based on Earth system science, namely:(1) a metallogenic system is a special kind of geological systems;(2) an abrupt geo-event shows dual features both of a disaster and of a mineral resource, i.

強(qiáng)調(diào)要從地球系統(tǒng)的大背景來研究成礦環(huán)境和成礦過程，也即將礦床成因和成礦系統(tǒng)研究提高到地球系統(tǒng)科學(xué)的層次，這是新世紀(jì)中礦床學(xué)發(fā)展的一個顯著特點(diǎn)。

And different views about it s tectonic environment is partly due to absence of reliable metamorphic PTt path .

關(guān)于其成因及大地構(gòu)造環(huán)境一直存在不同認(rèn)識，問題的關(guān)鍵是缺乏可信的變質(zhì)作用PTt軌跡爱干AV在线。

On the basis of whole grain evaporation age on single zircons using a double filament for different genetic zircons in metalassenite and metarhyolite of Luoyu formation,Yunkai group,the formation age of volcanic rock is 922 Ma;later geologic events is 643 Ma￣716 Ma or 427 Ma￣473 Ma...

本文采用顆粒鋯石分層蒸發(fā)法分別對云開群羅罅組變英安巖及變流紋巖中不同成因鋯石進(jìn)行年齡測定，獲得該火山巖之形成年齡為922Ma人人弄人人玩人人搡，940Ma天天干网；后期地質(zhì)事件年齡為643Ma～716Ma，427Ma～473Ma及物源區(qū)的年齡為1616Ma亚洲哟哟精品网站，2084Ma亚洲产国偷v产偷v自拍小说。

The burial diagenetic dolostone with multiperiodic metasomatic geneses only of reservoir significance,including two main structure types of oolitic dolostone and crystalline d...

其中具有儲集意義的僅為多期次埋藏交代成因的成巖白云巖，包括鮞粒白云巖和晶粒白云巖兩種主要結(jié)構(gòu)類型在线超碰观看。

The characteristics of these dolomite and pyrite aggregations are very similar to those microbal origin of dolomite discovered in the modem high saline lagoons and tidal flats.

其特征與文獻(xiàn)中報道的現(xiàn)代近海高鹽度瀉湖和薩勃哈中發(fā)現(xiàn)的微生物成因的白云石極為相似插逼吃奶头69黄色视频。

Especially, the typically stromatolitic pyrite, micro-strawberric pyrite, microgranular pyrite and rarely helical and silky pyrite have roughly been explained with the biogenic agency.

特別對較典型的疊層石黃鐵礦、顯微莓球黃鐵礦三级在线视频观看国产、黃鐵礦的微小球粒及較罕見的螺旋狀和絲狀黃鐵礦用生物成因進(jìn)行了初步解釋六月婷婷,激情九九。

Petrographic and petrologic characters of granitoids and its mafic microgranular enclaves in middle Gangdis〓 belt show that both of them are of magma origin, coexisting marie and felsic magmas, which may be represented by microgranular enclaves and granitoids respeetely, favour magma mixing model.

岡底斯帶中段花崗巖及其中鐵鎂質(zhì)微粒包體的巖相學(xué)、巖石學(xué)特征表明花崗巖及其中的包體都是巖漿成因的国产Jizz精品免费观看ADS，兩者所代表的長英質(zhì)九九精品国产72国产精品福利、鎂鐵質(zhì)巖漿表現(xiàn)為巖漿混合關(guān)系。

According the demand of the national"908"special project, the distribution of the detrital minerals and the characteristics of genetic mineralogy of the surficial sea-floor sediments offshore Hainan islands(CJ19 subzone) were studied by means of lens stereoscope, micropolariscope, SEM, EMPA and LA-ICPMS.

依托國家&908&專項(xiàng)項(xiàng)目色学生妹网站，借助立體及偏光光學(xué)顯微鏡国产精品一级黄色av、掃描電鏡、電子探針微分析和激光剝蝕等離子質(zhì)譜等先進(jìn)技術(shù)手段和方法免费裸体网站入口，對環(huán)海南島海域(CJ19區(qū)塊)海底表層沉積物中碎屑礦物的分布和鋯石一区二区黄色网站在线观看、石榴石的成因礦物學(xué)進(jìn)行了研究。

An contemporary expansion of the model has assumed evidently that asymmetric information spreads among firms and customers , and explored their differently asymmetric behaviors of responding to others ' changes of pricing and the causes of sticky prices so that the problem field of model has been expanded from oligopolistic market to monopolistically competitive market .

模型當(dāng)代的一個擴(kuò)展GoGo无码一区二区三区，明確假設(shè)了在顧客與廠商之間信息分布不對稱www.精品视频.com，探討了他們對于價格變動的反應(yīng)不對稱行為的各異性和粘性價格的成因，將微觀模型的問題域從寡頭市場擴(kuò)展至壟斷競爭市場美女黄片a。

An contemporary expansion of the model has assumed evidently that asymmetric information spreads among firms and cuscy110ers, and explored their differently asymmetric behaviors of responding to others' changes of pricing and the causes of sticky prices so that the problem field of model has been expanded from oligopolistic market to monopolistically competitive market.

模型當(dāng)代的一個擴(kuò)展欧美片aaaaaaaa片，明確假設(shè)了在顧客與廠商之間信息分布不對稱，探討了他們對于價格變動的反應(yīng)不對稱行為的各異性和粘性價格的成因色色男人网，將微觀模型的問題域從寡頭市場擴(kuò)展至壟斷競爭市場黄片无码A级。