lower cretaceous 中文意思是什麼

lower cretaceous 解釋
早白堊世
  • lower : adj 〈low 的比較級〉1 較低的。2 下級的，低級的。 lower animals 下等動物。3 南部的。 in lower Manh...
  • 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. The stippled area shows the distribution of a clean, permeable sandstone in the lower part of the lower cretaceous muddy formation.

    圖上畫點部分為下白堊紀馬迪組下部潔凈，滲透的砂巖分佈區域。
  2. 4. it is the first time that eclogite conglomerates are discovered in maotangchan and fenghuangtai formations. this suggests that ultra - high pressure metamorphic rocks in the dabie orogenic belt exhumed to the earth ' s surface in lower cretaceous. the geochemistry data indicates that the protoliths of the eclogite gravels formed in a structure setting of volcanic arc

    首次在毛坦廠組、鳳凰臺組中發現了榴輝巖礫石，這一發現表明大別造山帶超高壓變質巖在早白堊世已經折返到地表，而且地球化學研究表明這些榴輝巖礫石的原巖形成於巖漿島弧構造背景。
  3. The study results can be summerized as following aspects : ( 1 ) the basic settling curve of this basin was broken - line shape of seven sections in which upper jurassic, lower cretaceous, eocene, oligocene and neogene corresponded with the decline ones representing five episodic clear subsidences of this basin, late cretaceous to paleocene and early miocene corresponded with the rising ones reflecting the uplift and denudation of this basin. ( 2 ) the subsidence of this basin migrated from the east to the west, from mesozoic to cenozoic

    研究表明： （ 1 ）北黃海盆地的基本沉降曲線型式為7段折線狀，其中晚侏羅世、早白堊世、始新世、漸新世、新近紀為曲線下降段，代表盆地5幕較明顯的沉降；晚白堊世古新世以及中新世早期為曲線上升段，反映盆地的抬升剝蝕。
  4. A new type of dinosaur tracks from lower cretaceous of chabu, otog qi, inner mongolia

    內蒙古查布地區下白堊統巨齒龍足印化石
  5. 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。
  6. Lower cretaceous bayingebi group had higher organic abundance, generating hydrocarbon intensity and hydrocarbon expulsion efficiency. there were petroleum migration and accumulation in three phases through the analysis of fluid inclusion

    下白堊統巴音戈壁組二段具有較高的有機質豐度、生烴強度和排烴效率，由流體包裹體分析查干凹陷存在三期油氣運聚史。
  7. 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。
  8. Evolution and sequence stratigraphic framework of lower cretaceous in chagan depression

    查干凹陷下白堊統層序地層格架與演化
  9. Discussion on origin of clay minerals in outcropped sandstone from lower cretaceous chengzihe formation and muling formation in jixi basin

    穆棱組露頭砂巖中的黏土礦物成因探討
  10. The depositional character of zhuxiang formation in the basin reads as follows : a series of nne alluvial fan were formed along the fault. the half - deep lake to deep lake faces appeared by west side of the fault, towards the west the saucer lake faces, shore deposit and flood plain face appeared in proper order. the depositional center of lower cretaceous was formed in eastern part of the basin, and the depositional depth was pinch - out and thinning out from the east to the west

    盆地內下白堊統朱巷組沉積特徵表現為：沿郯廬斷裂帶呈北北東向廣泛發育了沖積扇體系，從近斷裂帶西側出現的半深湖-深湖相，向西依次為濱淺湖相到泛濫平原相的規律性分佈，沉積厚度由東向西尖滅、超覆，構成了明顯的東斷西超的盆地構造格局，表明下白堊統的沉積中心依然位於盆地東部。
  11. At the late stage of upper jurassic ( 135ma ), the provenance areas underwent intense and sustained uplift and denudation. in the period of lower cretaceous, the tectonic setting of the provenance areas turned into strike - slip

    侏羅紀末（ 135ma ）到早白堊世源區產生劇烈的持續上升和剝蝕，早白堊世晚期，源區的構造轉換為拉張。
  12. However, the reservoir porosity and permeability of lower cretaceous in erlian basin is better than that of yingen - ejinaqi basin

    但二連盆地下白堊統儲層的孔隙度和滲透率比銀根額濟納旗盆地要好得多。
  13. The sediment stratum in chagan depression is devised into tree supersedences. among them, lower cretaceous can be devised into eight sequences and twenty - two system tracts which have been studied in characteristics of sedimentary cycle, distribution and genetic analysis. after this study, formed mechanism, distribution model and evolvement of sequence have been put forward

    查干凹陷共劃分出3個超層序，研究目的層下白堊統劃分出8個層序， 22個體系域，並進行了層序地層格架的層序沉積旋迴特徵、層序展布特點和層序成因分析，提出了斷陷盆地層序的形成機制、層序地層分佈模式與演化模式。
  14. It points out the targets for next exploration in yingen - ejinaqi basin are the lithologic and stratigraphic as well as buried hill reservoirs ( volcanic rock and granite ) in the east, the jurassic and lower cretaceous as well as buried bill ( pre mesozoic granite ) reservoirs in the west

    提出了銀根額濟納旗盆地的下一步勘探方向：在東部，以巖性、地層、古潛山（火山巖或花崗巖）油藏為主：在西部，以侏羅系、下白堊統及古潛山（前中生界花崗巖）油藏為主。
  15. Sedimentary environments of submarine fan of the lower cretaceous in northern himalayas

    北喜馬拉雅地區下白堊統海底扇沉積環境
  16. On the basis of sequence stratigraphy analysis of bayindulan sag, wuliyasitai depression, jiergalangtu sag and saihantala sag, the integrated sequence stratigraphy section of lower cretaceous has been established and the vertical sequence of sandbodies distribution in three - order sequence has been concluded

    本文通過對巴音都蘭、烏里雅斯太、吉爾嘎朗圖和賽漢塔拉等凹陷層序地層分析，建立了二連盆地下白堊統層序地層綜合剖面，並總結了三級層序框架內砂體分佈的垂向序列。
  17. Based on the analysis of distribution of upper jurassic and lower cretaceous strata and basin - controlled faults, tanlu fault zone strike slip to develop the three nw - trending grabens from north to south western to tanlu fault zone in late jurassic and early cretaceous, which are bohai graben, jiyang graben and luxinan graben. based on the analysis of regional geology, the basic tectonic pattern of bohai basin is the cenozoic basin pattern since early paleogene. the outline, structure, deposit characteristics and heat flow distributions show that the basin is pull - apart basin in cenozoic time. the tectonic evolution pattern can be reconstructed based on the analysis of cenozoic strata, deposit thickness, location and activity of basin - controlled faults in the different depresses in bohai basin. the characteristics of structure and depositment in this mesozoic and cenozoic time show that bohai basin is a mesozoic and cenozoic composite basin

    根據中生界上侏羅統和下白堊統地層和控盆斷裂分佈分析，中生代晚期晚侏羅早白堊世郯廬斷裂帶的左旋走滑平移導致郯廬斷裂帶以西自北向南發育了3個北西向斷塹系，即北部的渤海斷塹系中部的濟陽斷塹系和南部的魯西南斷塹系。從區域資料綜合分析，渤海灣盆地的基本格局是早第三紀以來的新生代盆地格局。渤海灣盆地的形態構造和沉積特徵及熱流值分佈表明該盆地在新生代為拉分盆地。
  18. Abstract : based on the isotopic dating data of volcanics and recent research achievements of age boundary between jurassic and cretaceous systems, it is suggested that the volcanic series in shengyuan basin must be attributed to lower cretaceous

    文摘:本文根據盛源盆地火山巖同位素年齡數據和侏羅-白堊系界線年齡的最新研究成果，認為盛源盆地火山巖系的地層時代應屬早白堊世。
  19. Discussion on sequence stratigraphy and petroleum system of the lower cretaceous in liupanshan basin

    六盤山盆地下白堊統沉積層序與含油氣系統
  20. Clastic reservoir characteristics and their controlling factors of the lower cretaceous in b basin, central africa region

    盆地下白堊統儲層特徵及其控制因素
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