proterozoic n.,adj.【地質學;地理學】元古代[元古界](的)。
n.,adj. 【地質學;地理學】元古代[元古界](的)。 “proterozoic eon“ 中文翻譯: 元古宙“proterozoic era“ 中文翻譯: 元古代“proterozoic group“ 中文翻譯: 元古界; 原生界“proterozoic stratum“ 中文翻譯: 元古代層“proterosuchus“ 中文翻譯: 古鱷“proterosuchidae“ 中文翻譯: 古鱷科“proterosuchia“ 中文翻譯: 古鱷亞目“proterosoma“ 中文翻譯: 恙螨前半體“protesilaus“ 中文翻譯: 普羅忒西拉奧斯“proterophytic“ 中文翻譯: 古植代
protest |
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The comparison of cenozoic basalts and their mantle xenoliths from both sides of the taihangshan gravity lineament reveals that : ( 1 ) cenozoic basalts from western and eastern north china display opposite temporal trends , suggesting lithospheric thinning in western north china during the cenozoic and lithospheric thickening in eastern north china ; ( 2 ) the lithospheric mantle in the west is mostly late - archean to proterozoic in age , whereas that in the east has a modern age with minor proterozoic age ; ( 3 ) the crust mantle transition in the west is considerably thicker than in the east , probably due to different extents of magmatic underplating 摘要通過對比華北太行山重力梯度帶兩側新生代玄武巖及其中幔源包體的成分,發現: ( l )華北東、西部新生代玄武巖具有相反的演化趨勢,說明新生代以來西部巖石圈逐漸減薄,而東部巖石圈逐漸加厚; ( 2 )西部巖石圈地幔組成相對復雜,年齡多為晚太古代元古代;而東部巖石圈地幔組成相對單一,年齡多為現代值,少數為元古代; ( 3 )西部殼幔過渡帶較厚而東部較薄,反映兩地不同的巖漿底侵作用程度。 |
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Throughout researching it has been found that three main types of copper deposits , which mafic - ultramafic rock , marine volcanic rock and porphyry , with middle proterozoic , paleozoic and mesozoic in gansu , china . the cu - bearing formation , deep major faults and late structural - magmatic zones formed in specific geotectonic setting are main ore - controlling and metallogenic factors for copper , gold and polymetallic minerals in this area , and their convergent positions are effective ones formed ore bodies in space 通過研究認為:鎂鐵質-超鎂鐵質巖型、海相火山巖型及斑巖型三種銅礦類型,是甘肅的主要銅成礦類型,其主成礦階段為中元古代、古生代以及中生代;特定大地構造背景下形成的含礦建造、區域性深大斷裂以及后期斜向構造-巖漿活動帶,是該區銅、金及多金屬成礦的主要控礦因素,三者在空間上的復合是礦床體形成的有利部位。 |
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This paper emphasize the research of geometry , kinematics , age of formation of oblique - thrustin . it is discussed that geological significance of obligue - trusting . ( 1 ) this paper classified the strata of sertengshan - xitieshan in northern qaidam basin into daken - dabanyan group in lower proterozoic , tanjianshan group in ordovician - silurian period , aimunike group in upper devonian period and guokesan formation of zhongwu - nunsan group in permo - carboniferous ( 1 )對柴達木盆地北緣的賽什騰? ?錫鐵山一帶出露的地層進行了較為系統的劃分,厘定了古元古代達肯大坂巖群、奧陶? ?志留紀灘間山(巖)群、泥盆紀上泥盆統埃姆尼克群、石炭? ?二疊紀中吾農山群果可山組。 |
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The analysis of structural movement and expression shows that qinqi tectonic active area is a volcano - sendimentary compressional depression formed by several times of compression movement from lower proterozoic , and spreaded in the direction of north step by step till the forming of xiangshan and miboshan group in mid - later period of ordovician , bearing hardly with volcanical rock 從秦祁構造活動帶的構造形跡分析認為,該構造帶是自下元古以來多期擠壓環境下形成的火山一沉積壓陷,并一期又一期向北蠶食,于奧陶紀中后期形成基本不含火山巖的米缽山組、香山群壓陷巖系。 |
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A large amount of data of the latest regional geoglogy and the latest correlation data of layers and rock formation have been quoted , and a description of distribution of crystalline basement , formation , evolution as well as the distribution characteristic of the fracture belt of ordos basin have been made in this paper , and the paper also pointed out that the g - layer which lies between the base of the basin and tg reflector , is the extension of basinward of guandaokou of jixian system . the layer of changcheng system and jixian system , which had been divided before , can be correlated with the exposed huangqikou group and wangquankou group in helan mountain , and divided into qingbaikou system . so , the paper denied the viewpoint of the existence of aulacogen in hutuo period and middle proterozoic in this basin 文中引用了大量最新的區域地質資料和最新的地層、巖系劃分對比資料,對鄂爾多斯盆地結晶基底的巖系分布、形成、演化以及斷裂的展布特征進行了描繪,并指出盆地基底與tg反射層之間的g層是薊縣系官道口群向盆地的延伸,盆地中原劃分的長城系、薊縣系地層可以和賀蘭山出露的黃旗口組、王全口組對比,亦劃歸青白口系,從而否定了鄂爾多斯盆地存在滹沱期坳拉谷和盆地中有中元古坳拉谷發育階段的看法。 |
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In the light of tectonic evolution stage and metallogenesis , these metallogenic system ( assemblage ) could be classified as follows : ( 1 ) the pre - divergent metallogenic system in the southwest margin of north china paleocontinent in the archean - meso proterozoic : dongdashan iron , jinchuan nickel - copper . ( 2 ) the divergent metallogenic system in the northern margin of the qaidam paleoplate in the middle - late proterozoic : huashugou - liugouxia iron . ( 3 ) the metallogenic system in the active margin in the early paleozoic : the metallogenic assemblage in the island arc - rift in the early stage ( baiyinchang - qingshuigou copper - polymetallic ) ; the metallogenic assemblage in island arc in the middle - late stage ( honggou - jiaolongzhang copper - polymetallic ) ; the back - arc extensional basin ( zhuzhuiyaba - jiugequan - shijuli copper ) ; the metallogenic assemblage in connection with subduction and magmatic - hydatogenesis ( taergou - xiaoliugou wolfram ; huashugou - liugouxia copper ; dadonggou - diaodaban lead - zinc ) ; the metallogenic assemblage is related to the oceanic crustal shards ( dadaoerji chromite ; yushigou chromite ) . ( 4 ) the metallogenic system has something to do with collision - type orogeny : the metallogenic assemblage in foreland basin ( tianlu copper ) ; the metallogenic assemblage with the intracontinental orogeny and ductile shear ( hanshan - yingzhuishan gold ) 根據構造發展階段和成礦作用特點,確定本區成礦系統及組合如下: ( 1 )華北板塊西南邊緣太古宙中元古代裂解期前成礦系統:東大山鐵成礦組合,金川鎳銅成礦組合; ( 2 )柴達木板塊北緣中、新元古代裂解成礦系統:樺樹溝柳溝峽鐵成礦組合; ( 3 )加里東期活動大陸邊緣成礦系統:早期島弧裂谷成礦組合(白銀廠清水溝銅及多金屬成礦組合) ,中、晚期島弧成礦組合(紅溝蛟龍掌銅及多金屬成礦組合) ,弧后擴張盆地成礦組合(豬咀啞巴九個泉石居里銅及多金屬成礦組合) ,與俯沖作用有關的巖漿熱液成礦組合(塔爾溝小柳溝鎢成礦組合,樺樹溝柳溝峽銅成礦組合,大東溝吊大坂鉛鋅成礦組合) ,洋殼殘片成礦組合(大道爾吉鉻成礦組合,玉石溝鉻成礦組合) ; ( 4 )碰撞造山成礦系統:前陸盆地成礦組合(天鹿銅成礦組合) ,陸內造山韌性剪切成礦組合(寒山鷹咀山金成礦組合) 。 |
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2 both the hanging wall and the footwail rock of ore bodies are garnet biotite schist , protoliths are alkaline volcanic rocks ( tracyh andesite ) . according to characteristics of trace elements assemblages and the setting of tectonics , these alkaline volcanic rocks were derived from the lower degree melting of metasomatic and enriched mantle ( eml ) in the initial stage of middle proterozoic epoch . they strongly enriched in large ion lithophile elements ( lile ) , such as ba 2 、礦體頂、底板圍巖(石榴石黑云母片巖、鈉長黑云母片巖等)的原巖為堿性火山巖(粗面安山巖) ,相對富集大離子親石元素ba 、 cs 、 rb 、 k 、 lree及貧zr 、 sr 、 ti 、 hf 、 hree ,為早元古代末期-中元古代早期交代富集地幔低程度部分熔融所形成的堿性火山巖。 |
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On the basis of systematic analysis and comparative research on jianchaling and jinchuan nickel sulflde deposit in geology and geochemistry , some conclusions can be drawn as follow : ( 1 ) re - os isotopic geochronology data define an precise 878 ? 6 ma isochon , suggest jianchaling nickel sulflde deposit would form in new proterozoic . the rock - forming process and metal logenesis happened on the whole , this deposit subordinates to magmatic deposit 通過對煎茶嶺和金川鎳礦床地質、地球化學的系統分析與比較研究,取得以下新的認識和進展: ( 1 ) re ? os同位素地質年代學研究表明,煎茶嶺硫化鎳礦床形成于878ma前的新元古代,成礦作用和成巖作用基本上是同時進行的,屬巖漿礦床。 |
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Based on the studies of the “ bedding “ and “ sedimentary relic “ of granite in the proterozic strata at huangqikou of the middle part of helanshan , the authors think that the proterozoic granite in the area was produced by metasomatic metamorphism , which formed during the time when the earth crust became thinner 對賀蘭山中段黃旗口元古代地層中存在于花崗巖中“層理” 、 “殘留體”等地質現象進行研究,認為該地區花崗巖是由元古代沉積巖經過變質交代作用而形成的,這種變質交代作用可能發生在古元古代,在秦祁賀三叉裂谷活動之前地殼變薄的大地構造環境下形成。 |
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Kongxi buried hill shows following features in the seismic profiles : the structures are asymmetric . there is flexural syncline on the east side and a monocline on the west side . asymmetric repetition of stratigraphic units is present in the drill wells and the dips of beds and faults are gentle . the permo - carboniferous system of both sides almost lie in the same slope and the events of cambrian or upper proterozoic are continuous from east to west . the phenomenas suggest that kongxi buried hill could be a thrust belt been traced which consists of reverse faults . the imbricate faults mainly effect pre - jurassic strata . there are obvious angular unconformity between jurassic - cretaceous system and paleozoic involved deformation of thrust . the thrust front in some place has cut off the beds of jurassic - cretaceous system . the structural style of the thrust structure changes along the strike of the kongxi buried hill 地震和鉆井資料揭露的孔西構造帶前第三系潛山的地質特征可以歸納為:構造帶總體上不對稱構造帶內部有地層重復現象石炭二疊系地層的位置明顯高于兩側的同一地層的高度。用由34條向東傾斜的逆沖斷層組成的疊瓦扇構造模式能夠比較合理地解釋上述地質特征。該帶向東傾斜的逆沖疊瓦狀斷層組主要影響前侏羅系地層,侏羅白堊系與卷入逆沖構造變形的古生界地層之間有明顯的角度不整合。 |
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Dongzigou ag deposit and jianbaoshan au deposit are hosted in the sandstone of middle - proterozoic suberathem , which are developed from the proterozoic sediment metal source - rocks formed during the meso - proterozoic volcanism and reworked by the mesozoic tectono - magmatism during the formation of the metamorphic core complexes in eastern hebei . the dongzigou ag deposit has the characteristics of reformed strata - bound origin , the jianbaoshan au deposit , located in the detachment fault , is the alterated rock type . both deposits have the similar wall - rock alteration , and show the same trace element behavior , and ree patterns . they are the results of the multi - stage tectono - magmatism in the environment of continental extension in eastern hebei region . their mineralization depended on their wall rocks and relative location in metamorphic core complexs 賦存于中元古宙長城系常州溝組的洞子溝銀礦床和尖寶山金礦床是由密云-都山變質核雜巖構造體系所控制的一組礦床。其成因為中元古宙火山巖漿活動形成的沉積礦源,后經中生代的變質核雜巖構造巖漿體系疊加改造而成。洞子溝銀礦床具有層控迭加改造的特點尖寶山金礦床則具有破碎蝕變巖型礦床的特點。 |
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Tianjin is located at north part of northern china plain , where is rich in thermal water in sedimentary basin . the main reservoir is carbonate rocks of the paleozoic and upper and middle proterozoic group , which contain thermal waters with temperature of more than 90 . the cap rock is cenozoic sedimentary rocks with thickness of more than 1000m , which contains thermal water with temperature from 25 to 70 in 13 sandstone layers . the temperature of thermal water is steady growth along with the deepen of basin . all thermal waters in different aquifers are medical mineral waters , which is conducive to good health 天津位于華北平原的北部,那里的沉積盆地含有豐富的地下熱水。主要的熱儲層為古生界和上中元古界的碳酸鹽巖層,所含熱水的溫度略高于90蓋巖層為新生界沉積層,在13個砂巖含水層中含有2570的熱水。熱水的溫度隨盆地深度的增加而增加。 |
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The yinachang fe - cu - ree deposit is one of typical deposits and mainly occurs in yinmin formation of kunyang group of middle proterozoic epoch . this paper mainly reports the results of investigation on the ree geochemistry of various rocks and minerals , the sources of ore - forming materials and the age of mineralization . the preliminary mechanism of sudden ree enrichment and mineralization in middle proterozoic has been interpreted 本論文選擇迤納廠礦床為主要研究對象,系統研究礦床不同類型巖(礦)石和礦物的稀土元素地球化學特征,探討富稀土的成礦流體、成礦物質來源和稀土元素成礦時代,揭示昆陽裂谷初期因民組稀土元素富集的地球化學機制。 |
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The research for metallogenic evolution mechanism in the region indicates that gold ore formation has undergone three stages : gold elementary source bed formation stage from the neo - archean to the paleo - proterozoic and meso - proterozoic , regional metamorphism - migmatization gold reenrichment stage at the late meso - proterozoic , structure - fluid - gold mineralization stage at the yanshan period 對礦帶成礦演化機理的研究表明,金礦形成經歷了3個階段:新太古至古、中元古代金初始礦源層形成階段;中元古代末期區域變質混合巖化金再富集階段和燕山期構造流體金成礦作用階段。 |
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The main continent rift developed in mid - late proterozoic ; the paleo - asian tectonic dynamic system played an important role in the paleozoic period ; the combination of tethys - paleopacific tectonic dynamic system influenced the basin in mesozoic . during that period , the tethyan dynamic system affected the basin in the early stage ( t ) while paleo - pacific dynamic system affected it in the latter stage ( js - k ) ; the new tethyan - circum pacific tectonic dynamic system dominated in cenozoic period 中新元古代為大陸裂谷集中發育階段;古生代主要受控于古亞洲構造動力學體系;中生代主要受控于中特提斯?古太平洋構造動力體系的聯合作用和影響,其中早期( t )主要受特提斯動力體系影響,晚期( j _ 3 - k )主要受古太平洋動力體系影響;新生代主要受控于新特提斯?今太平洋構造動力體系的聯合作用和影響。 |
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Four tectonic evolution phases have been made out in this area . they are original crust formed in the archean - early proterozoic era , continental crust shearing in the middle - new proterozoic era , plate tectonic developed in sinian - triassic period and intracontinental orogeny in the middle cenozoic period 將區內構造演化歸納為太古?早元古代原始地殼形成、中新元古代大陸地殼裂解、震旦?三疊紀板塊構造體制、中新生代陸內造山等四個演化階段。 |
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Compared with jianchaling nickel sulflde deposit , jinchuan superlarge copper - nickel sulflde deposit mostly related with mafic - ultramafic complex that multiple intruded , spatially respected with old huabei block , which formed in marginal rift in middle - new proterozoic 與煎茶嶺鎳礦床相比,金川超大型鎳銅硫化物礦床主要與多次侵入的鎂鐵?超鎂鐵質雜巖有關,空間上與時代相對較老的華北地塊關系密切,形成于中?新元古代的邊緣裂谷。 |
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Move plant and its product to want to carry out quarantine lawfully , because plant disease , bug , fireweed and other and harmful live thing are changed in nature , be ( plant diseases and insect pests of the following abbreviation ) proterozoic has certain regional 動植物及其產品要依法實施檢疫,是因為在自然界中動植物病、蟲、雜草以及其他有害生物(以下簡稱病蟲害)的原生地有一定的地區性。 |
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The andesite clasts were most likely derived from erosion of igneous rock in middle jurassic time , and the limestone clasts were derived from cambrian and ordovician strata . dolomite clasts were derived from the middle proterozoic jixian group 安山巖礫石是中侏羅統髫髻山組火山巖剝蝕的產物,灰巖礫石來自于寒武、奧陶系灰巖,白云巖礫石主要來自于薊縣系白云巖。 |