Using established dynamics model, the author has explained the genesis of numerous dolichos lablab limestone and siliceous limestone in the two growing stages of southern China, i.e. carbonates developing stages (Donggangling stage of middle Devonian and Changxing stage of late Permian). Because numerous carbonate rocks have been produced on the platform, at the same time, it is one of ignored material sources that numerous carbonate lime-mud have been transported from platform to basin.

運(yùn)用所建立的動(dòng)力學(xué)模型對(duì)中國(guó)南方兩個(gè)重要的成礁期一级精品久久久久，即生物碳酸鹽發(fā)育期(中泥盆世東崗嶺和晚二疊世長(zhǎng)興期)亚洲欧美另类中文字幕，臺(tái)盆內(nèi)大量扁豆?fàn)罨規(guī)r和硅質(zhì)灰?guī)r的成因做了解釋色久盗拍免费在线视频，因?yàn)榕_(tái)地上大量碳酸鹽生產(chǎn)的同時(shí)国产第二页，由臺(tái)地向盆地輸送的大量碳酸鹽灰泥是盆地內(nèi)的一個(gè)不可忽略的物質(zhì)來(lái)源幸福宝网站官网站。

It was concluded that a noble and base metal metaflogenic series was composed of the inner part of BIFs and ferruginous rock series. And mantle plume had close spatio-temporal and genetic relationships with BIFs. In anoxic environment in Precambrian, the anaerobic bacteria would provide oxygen for ferruginous deposition during photosynthesis.

認(rèn)為BIFs內(nèi)部以及包括BIFs在內(nèi)的含鐵巖系均構(gòu)成賤国产视频第1页、貴金屬成礦系列；地幔柱與BIFs之間存在密切的時(shí)91精品无码视频、空和成因聯(lián)系毛片网址在线；在早前寒武紀(jì)缺權(quán)的環(huán)境下，厭氧的細(xì)菌類生物通過(guò)光合作用為BIFs中鐵質(zhì)沉淀提供了氧亚洲see图10。

By using geological and geochemical data, the genetic type of the Silurian asphaltic sandstones in Tarim Basin is investigated and divided as the following:(1)Oxidized asphalt on surface or in shallow-layer is the heavy asphalt crude and solid oxidized asphalt or gilsonite formed by volatilization, oxidization, water washing and biodegradation in oil-layer outcrop area or near earth surface.

通過(guò)對(duì)地質(zhì)一级A毛片美女精品大片、地球化學(xué)等資料的研究黄片AV在线免费看，認(rèn)為塔里木盆地志留系瀝青砂巖有5種成因類型：①表生—淺層氧化瀝青是指在油層露頭區(qū)或油層位于近地表處，由于揮發(fā)亚洲一区二区三区动图、氧化麻豆在视频观看福利免费看、水洗和生物降解等作用而形成的一些焦油狀瀝青質(zhì)重油以及固體淺層氧化瀝青或硬質(zhì)瀝青。

Base on above studies, some conclusions were obtained as follows:(1) ore-forming background of the studied ferromanganese crusts are mainly controlled by intensity of Antarctic Bottom Waters and variations of material source;(2) it is confirmed that the ferromanganese crusts are mainly hydrogenetic and their composition are affected by volcanic and continental material simultaneously; there are no obvious phosphatization reconstruction and element reaction occurred in them, so they have important paleoceanological significance;(3) from researches on element occurrence modes in the new-type ferromanganese crusts and the lying sediments, it is proposed that there is no great biological affection on the crusts formation and their composition mainly came from the adsorptive action of the ferromanganese oxides in them;(4) two major types of ore-controlling factors are identified through compilation of ore-controlling factors, which are geological and oceanic factors;(5) considering the long-term variation trends of the crusts composition, combing the U-series and 10Be isotope dating results, it is proposed that the ore-forming processes of ferromanganese crusts in the studied areas can be divided into three major stages (5.6~2.8 Ma, 2.8~2.7 Ma and since 2.7 Ma), and then the activities of AABW since the Late Miocene, changes of input flux coming from volcanic and continental material are confirmed.

通過(guò)研究火辣辣福利视频，得出如下結(jié)論：(1)研究區(qū)鐵錳結(jié)殼的成礦背景主要受控于南極底流強(qiáng)弱及物源供給的變化国内桃色无码视频精品；(2)證實(shí)鐵錳結(jié)殼主要為水成成因，同時(shí)其物質(zhì)組成也受一定程度的火山和陸源物質(zhì)的影響黄色1级视频；結(jié)殼自形成以來(lái)沒有遭受到明顯的磷酸鹽化等成巖后期改造和元素再遷移欧美草草影院视频，具有重要的古海洋學(xué)意義；(3)通過(guò)新型鐵錳結(jié)殼及下伏沉積物元素賦存狀態(tài)的研究欧洲免费多人疯狂，認(rèn)為生物作用對(duì)研究區(qū)結(jié)殼的形成并沒有很大的直接影響超碰在线观看播放，其物質(zhì)成分主要來(lái)自于結(jié)殼中鐵錳氧化物的吸附作用；(4)在控礦要素的研究中91精品国语高清白产拍，歸納出了地質(zhì)與海洋兩大類結(jié)殼控礦要素欧日韩精品明星图片在线观看；(5)根據(jù)結(jié)殼成分長(zhǎng)周期變化趨勢(shì)，結(jié)合鈾系和10Be測(cè)年結(jié)果av录像观看，將研究區(qū)結(jié)殼的形成過(guò)程劃分為三個(gè)主要階段(5.6~2.8 Ma影音先锋不鲁321资源网，2.8~2.7 Ma和2.7 Ma以來(lái))，并確定了晚中新世以來(lái)研究區(qū)南極底流的活動(dòng)情況91国内精天天、火山和大陸來(lái)源物質(zhì)輸入量的變化午夜精品高清一级。

Studies on impact-related minerals, geochemical anomalies, impact microspherules and microtektites enable us to define frequencies, magnitudes and types of impact bodies of extraterrestrial impact events. Impact layers and ejectas may not only provide distinct event markers in high-resolution stratigraphical correlation, but also potential interpretations for the catastrophic changes and their causes of life and global environment.

通過(guò)對(duì)撞擊地層層序的時(shí)空變化、所包含的撞擊成因礦物18禁国产免费网站、撞擊微球粒和微玻璃隕石以及古生物和地球化學(xué)異常等的研究在线你懂的网站国产日韩欧美，可以了解撞擊事件的發(fā)生頻率、幅度和撞擊天體的性質(zhì)等污网站18，也為探索生物和地球環(huán)境的災(zāi)難性變化及其起因提供了新的思路一级性爱视频国产无码。

Studies on impactrelated minerals, geochemical anomalies, impact microspherules and microtektites enable us to define frequencies, magnitudes and types of impact bodies of extraterrestrial impact events. Impact layers and ejectas may not only provide distinct event markers in highresolution stratigraphical correlation, but also potential interpretations for the catastrophic changes and their causes of life and global environment.

通過(guò)對(duì)撞擊地層層序的時(shí)空變化、所包含的撞擊成因礦物一级特黄特色的免费大片视频、撞擊微球粒和微玻璃隕石以及古生物和地球化學(xué)異常等的研究免费黄片2019，可以了解撞擊事件的發(fā)生頻率、幅度和撞擊天體的性質(zhì)等AV福利免费在线观看，也為探索生物和地球環(huán)境的災(zāi)難性變化及其起因提供了新的思路91精品在线观看国产福利。

For disclosing the morphogenesis of stromatolites , the chinese stromatolite workers more recently began to approach the models of biofabrics in cherty stromatolites and formation causes of laminae as well as the growth, movement and mat-making courses of microorganisms in stromatolites

近年來(lái)，為了揭示疊層石的形態(tài)發(fā)生超碰超在线，中國(guó)學(xué)者正在探討硅質(zhì)疊層石的生物組構(gòu)模式和疊層石微層理的成因最新国产95自拍视频专区，以及疊層石中微生物生長(zhǎng)、運(yùn)動(dòng)和造席過(guò)程。

These kaolinitic rocks constitute one of the major natural resources and non-metallic deposits, and are of important development and utilization value. In this paper, the distribution and research history of the kaolinitic rocks in Chinese coal measures are briefly introduced and the composition, text...

本文介紹了中國(guó)煤系高嶺巖資源概況亚洲巨制av剧情在线、研究簡(jiǎn)史丰满的人妻一级毛片中文；根據(jù)成分、結(jié)構(gòu)欧美激情性A片在线观看⑧、地質(zhì)產(chǎn)狀等特征91亚洲精品福利在线播放，提出了中國(guó)煤系高嶺巖的成因類型；對(duì)生物和有機(jī)質(zhì)在其形成中的作用進(jìn)行了分析和探討男人的天堂在线无码视频网站，并結(jié)合有機(jī)酸溶解礦物模擬實(shí)驗(yàn)對(duì)其成礦作用做了初步探索欧美巨；最后對(duì)煤系高嶺巖的某些關(guān)鍵性加工技術(shù)進(jìn)行了簡(jiǎn)述。

Which by their causes, and the water depth can be divided into two parts, one is basically the edge of the continental shelf sea (such as the Kara Sea, Laptev Sea, East Siberian Sea, Chukchi Sea, Beaufort Sea, Baffin Bay, Hudson Bay, etc.); Second, the central part of the Arctic Ocean, all kinds of ice widespread, most of the waters as "permanent ice zone" of biological resources than the poor.

后者按成因和水深又可分為兩部分97亚洲色图，一是基本上屬于大陸架范圍的邊緣海（如喀拉海国产精品国产三级囯快看、拉普捷夫海、東西伯利亞海无码黄色视频大全、楚科奇海A片在线视频观看、波弗特海、巴芬灣亚洲中文字幕无码乱线、哈得孫灣等）超碰在线看；二是北冰洋中央部分，各類浮冰廣布日韩精品片第7页在线观看视频，大部海域?yàn)?amp;永冰區(qū)&最新网站毛片，生物資源較貧乏。