middle cretaceous 中文意思是什麼

middle cretaceous 解釋
中白堊世
  • middle : n 1 中央，正中；中間，中部；中途。2 人體的中部，腰部。3 中間物，媒介物；中人，中間人，調解人；中...
  • cretaceous : adj. 白堊（質）的。 cretaceous period [system] 【地質學；地理學】白堊紀[系]。n. 〈C-〉 【地質學；地理學】白堊紀[系]。
  1. Therdly because of the influence of terrain and geological structure, arenaceous resources of different regions are different in mu us. sands are mainly from riverway in northwest ; from efflorescent cretaceous sandstone on account of higher topography in the middle part of mu us ; and sands resources are intricated in southeast, mainly including riverway sands, sands blown by the wind and embedded sands under so

    3 、毛烏素沙地因受地形和地質構造影響，不同區域的砂質來源情況不盡相同，西北部地區主要為河道沙；中部地區地勢較高，為白堊系基巖裸露而風化成沙；東南部地區沙質來源情況復雜，主要有：現代河道砂、風積沙、也有埋藏在現代壤土之下的出露古沙。
  2. Early cretaceous in age diagnosis yanosteus of middle size

    鑒定特徵體中等大小的燕鱷。
  3. Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous

    收藏礦物、古生物學、中泥盆紀、二疊紀到早期的侏羅紀和白惡紀。
  4. We have concluded that the structural movement of the area can be divided into three stages : the stretching stage from simian to early ordovician, the extrusion and rising stage from middle and late ordovician to jurassic and stable depressed stage of foreland basin slope from cretaceous to neozoic

    經研究認為研究區的構造運動，主要分為震旦紀到早奧陶世的拉張階段、中晚奧陶世到侏羅紀的擠壓隆升剝蝕階段以及白堊紀到新生代的前陸盆地斜坡穩定沉降階段。
  5. The mesozoic primary hydrocarbon accumulation has been heavily damaged by the denudations at latest middle jurassic and latest cretaceous and the faulting from paleocene to eocene

    中侏羅世末期、白奎紀末期的地層抬升剝蝕，以及古始新世的斷裂活動對中生代形成的原生油氣藏破壞作用明顯。
  6. Based on the analyses of structural features, volcanic activities, sequence construction and so on, it is believed that liaohe basin has experienced the period of dextral transtensional stress field in late jurassic - early cretaceous, middle and late paleocene, late eocene, miocene, and also the period of sinistral compresso - shear stress field in late cretaceous, early paleocene, early and middle eocene, oligocene, pliocene

    對構造現象、火山活動、層序充填型式等多種實際資料的分析表明：遼河盆地經歷了侏羅紀末白堊紀早期、古新世中後期、始新世中後期、中新世等右旋張扭應力場作用階段，以及白堊紀晚期、古新世初期、始新世早中期、漸新世、上新世以來等左旋壓旋應力場作用階段。
  7. 6. the mesozoic sedimentation in the north margin of the dabie orogenic belt is diachronous. from east to west, the onset of the sedimentation is successively in lower - middle jurassic, middle - later jurassic and lower cretaceous

    大別山北緣中生代沉積作用具有穿時特徵，沉積作用開始時間自東向西依次為早中侏羅世、中晚侏羅世和早白堊世。
  8. The main conclusions are as follows ; firstly, under the influence of three phases of episodic activities, three two - order sequences is composed of three depositional cycles and three regional unconformities ; secondly, under the control of structure activities such as fault - block activities and the influence of three - order climate cycles and source recharge, lower cretaceous can be divided into six three - order sequence ; thirdly, because fault activities is weak and fault slope is gently, fan deltas exist in steep slopes in early and later stages and subaqueous fans exist and turbidite fans exist in troughs in middle stage

    主要的結論為：其一，受三期幕式活動影響，斷陷形成了3個大的沉積旋迴和3個區域不整合面，構成了下白堊統3個二級層序；其二，受斷陷內翹傾和塊斷等構造活動的控制，以及三級氣候旋迴和物源供給因素的影響，下白堊統劃分出6個三級層序；其三，在單斷斷陷湖盆中，湖泊階段的早、晚期由於凹陷邊界斷層活動較弱，斷面較緩，陡坡可以發育扇三角洲，在湖泊階段的中期主要為水下扇砂礫巖體，並在窪槽區發育濁積扇。
  9. The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement, while the cover has undergone the evolution of intra - continental rife in permian, down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary. the main sediments are huge - thick volcanic rock, shallow intrusive rock and tuff in early permian, dark mudstone, marl and muddy dolostone in lucaogou formation in middle permian, huge thick volcanic rock, intruder in tiaohu formation in middle permian, miscellaneous sandy gravel, sandstone and gray mudstone in triassic ( the red is under the gray, and huge - thick dark gray, gray sandy gravel, sandstone, mudstone with coal layer in jurassic

    盆地基底由前寒武紀結晶基底和古生代褶皺基底組成，盆地蓋層則經歷了二疊紀的裂谷盆地、三疊紀?白堊紀的坳陷盆地和第三紀后的山間盆地的演化過程。盆地主要沉積了下二疊統巨厚火山巖、淺成侵入巖和凝灰巖；中二疊統蘆草溝組的暗色泥巖、泥灰巖、白雲質巖石以及條湖組的巨厚層火山巖、侵入巖；三疊系雜色砂礫巖、砂巖及灰色泥巖（下紅上灰） ；以及侏羅紀厚層深灰、灰色砂礫巖、砂巖、泥巖夾煤層。
  10. There is a close relation between mesozoic tectonic evolution, fluid evolution, petrogenesis and mineralization in the manzhouli - e ' erguna region in the northeast of the northern orogenic belt, china, and three evolution stages of the mesozoic tectonic - fluid - petrogenetic and metallogenetic system are proposed out : 1 ) acompanied by ree and cu mineralization, the calc - alkaline volcanic rocks and mantle - crust mixed type granite occurred under the regional tension tectonic background caused by the mongolia - okhotsk residual ocean that was closing in scissors form in the early - middle jurassic. 2 ) acompanied by pb, zn and ag mineralization, the calc - alkaline and alkaline volcanic rocks occurred under the regional shear - compression tectonic background in the late jurassic. 3 ) acompanied by u, f, pb, zn and ag mineralization, the caic - alkaline and alkaline volcanic rocks occurred under the regional tension tectonic background in the early cretaceous

    摘要本文討論了北方造山帶東北段滿洲里額爾古納地區及其毗鄰區中生代構造流體成巖成礦系統及其演化的三個不同階段： 1 ）早中侏羅世張性「似裂谷環境」下所形成的中基性堿性火山巖、同熔性花崗巖及深源流體活動形成的稀土礦床和斑巖性銅鋁礦床； 2 ）晚侏羅世擠壓剪切環境下所形成的酸性火山巖、斑巖類及深源流體活動所形成的鉛鋅銀礦床； 3 ）早白堊世張性環境下所形成的基性堿性火山巖及深源流體活動所形成的鈾礦床、金銀礦床及螢石礦床。
  11. During my master " degree investigation, i mainly focused on the coarse - grain stratigraphy within mesozoic basins in chengde and pingquan districts, the eastern yanshan, and did systemic provenance analysis and paleo - current direction measurement and studied the relationship among basin evolution, volcanism and tectonism. then i summarized the mesozoic basin development and the coupling characters of basin and mountain. the evolution of basin and mountain in this area can be divided into several stages : the stage of compression uplift and flexural basin during the triassic through the early jurassic, the stage of structural compression - volcanism and foreland basin during the middle and late jurassic and the stage of rift basin in the cretaceous

    在野外典型路線調查的基礎上，對燕山地區東段承德、平泉地區的中生代盆地中發育的粗碎屑沉積層，進行了系統的物源分析與古流測定，並在此基礎上重點剖析了盆地的發育、火山活動、構造變動三者之間的關系，總結了本區中生代盆地發育規律及盆山耦合特徵，並將盆山演化劃分為：三疊紀?早侏羅紀的構造擠壓隆升與撓曲盆地發育階段階段，中晚侏羅紀的構造擠壓?火山活動與類前陸盆地發育階段，早白堊世的拉張斷陷盆地發育階段。
  12. Those two phases of conjugated shear joints are differ from each other in spatial distribution, which is a reflection of the spatial evolution of the fault zone. it can beinferredfrom the information about macrostructure, superimposed deformation of tectonites, paleotectonic stress field of joints and other related documents that there had been three stages of significant activity since zijingguan fault zone was activated. the first stage was about from middle juiassic to early cretaceous, when the fault zone activated left - laterally under nw - se striking transpression

    宏觀構造組合特徵、構造巖變形疊加信息、節理的古構造應力場信息及前人區域資料表明，紫荊關斷裂帶自古生代末開始活化以來有三次主要構造活動：第一次是中侏羅世?早白堊世，在北西?南東向近水平擠壓作用下，斷裂左行壓扭性活動，控制太行山地區巖漿巖帶及與其相關的接觸交代型礦床的形成。
  13. The thesis was written under the direction of dynamic theory of forming reservoir, follows the rules of comprehensive information, judgment, interpretation and assessment and even makes full use of outcrop geology, data from drilling and logging, data from laboratory analysis and achievements in geophysical exploration. considering the basic factors of forming reservoir in the south of ordos basin as the starting point, the thesis defines that yanchang group of triassic goes into the start of generating oil in the late period of mid - jurassic and that the largest oil generation peaks in the middle period of early cretaceous, after the analogue - history of hydrocarbon generation. meanwhile it also establishes the relationship between the evolution of oil and gas and the formation of traps, the time of oil exploration

    本文以成藏動力學理論為指導，本著綜合信息、綜合判斷、綜合解釋、綜合評價的原則，充分利用露頭地質，鉆測井資料，實驗分析資料及物化探成果，以鄂爾多斯盆地南部的基本成藏要素為出發點，通過生烴史模擬，確定了三疊系延長組在中侏羅晚期（ 150ma ）進入生油門限，于早白堊世中期達到最大生油高峰期；同時並確立了油氣演化與圈閉形成、捕油時間的關系；通過流體勢的全區計算，提出了該區油勢具有明顯的「雙層」結構特徵，並建立了以靜水壓力為主的重力流系統和以差異壓實作用為主的壓實流系統的流體動力分佈模型；通過成藏動力學系統的劃分及事件分析，探討了該地區油氣聚集規律，最終指出了有利的含油氣遠景區。
  14. The palaeogeographic research indicate that the palaeogeographic outline of the study area recorded the evolution from a sedimentary basin in which the shallow - water carbonate platform sediments and deep - water terrigenous clastic submarine fan developed from southeast to northwest and northeast during the late triassic through a submarine sheet - like model composed of deep - water sandy turbidite and fine - grained turbidite during the early jurassic to a terrigenous clastic barrier coast during the middle and late jurassic and finally to the coal - bearing delta sediments during the late cretaceous

    古地理分析表明，研究區晚三疊世古地理輪廓是一個從東南向西北和東北方向由淺水碳酸鹽臺地及深水陸層海底扇沉積共同發育的沉積盆地；早中侏羅世，演變成為一個由深水砂質濁積巖和細屑濁積巖組成的水下席狀體沉積；進入中晚侏羅世，其古地理表現為一個陸屑淺海有障壁海岸；到了晚白堊世，研究區表現為以含煤沉積為特徵的三角洲相沉積。
  15. Flintcomb - ash being in the middle of the cretaceous tableland over which no railway had climbed as yet, it would be necessary to walk

    燧石山地處白堊質高原的中心，直到現在還沒有火車通到這兒，所以她只有靠步行到那兒去。
  16. Through the analysis of subsidence history in the north of western ordos basin, as a result of the terranes northward accretion and the successive collision of the baykala block in the middle triassic, the qiangtang block in the late triassic, the lhasa block in the middle jurassic, the gangdese block in the cretaceous and the subduction of izanagi plate in yanshanian period, the studied region became a intracontinental foreland basin from late triassic to cretaceous

    摘要通過對鄂爾多斯盆地西緣北段沉降史的分析可知，晚三疊世白堊紀，由於中三疊世巴顏喀拉地體、晚三疊世羌塘地體、中晚侏羅世拉薩地塊、白堊紀岡底斯地體連續向北增生、碰撞以及燕山期伊佐奈岐板塊的俯沖，盆地西緣北段的響應顯示為陸內前陸盆地的特徵。
  17. Abstract : through statistical analysis of the rock mechanic properties of upper jurassic and cretaceous red mudstones, siltstones and sandstones in the middle sichuan red basin, the range of their compressive strength, the features of the shearing strength and of the deformation curves are proposed in this paper

    文摘:對川中白堊系、侏羅系的泥巖、砂巖、泥質粉砂巖的抗壓強度進行統計分析，得出紅層巖石作為地基時抗壓強度的范圍值供設計參考，對泥巖、砂巖的其他力學性質進行了評價。
  18. Continent block colliding during late - permian to middle - triassic ; lower part delamination and upper part rifting of lithosphere during late - triassic ; delayed compression and uplift during early - jurassic ; crust extension from middle - jurassic to early - cretaceous ; large - scale strike sliping from late - cretacoues to present. ( 6 ) roughly expounding the deposits distribution feature in south part of sanjiang orogenic belts, especially in detail to set forth the characters of southern nanchangjiang cu, pb, zn, ag, sn, fe metallogenic belt

    初步闡明了三江造山帶南段礦床的時空分佈特徵，特別是較系統闡述了與巖石圈拆沉作用相關的南瀾滄江cu 、 pb 、 zn 、 ag 、 sn 、 fe成礦帶的特點，指出含鉀較高的火山巖可作為尋找拆沉環境中銅多金屬礦的有利地區，而火山巖中孔隙度較高的層位、層面和破碎帶可作為優先找礦部位。
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