alluvial formation 中文意思是什麼
alluvial formation
解釋
沖積地層-
Based on available data, the study on regional structure, sedimentary reservoir and source rock characteristics shows that the basins in south china sea had experienced sedimentary evolution in faulting period and depression period, deposited thick cenozoic formation, upwardly developed alluvial fan facies, river - lake facies coastal swamp facies coastal facies, neritic facies and bathyal deposit system, regionally had 3 source rocks of eocene, oligocene and miocene, 3 reservoirs of pre - cenozoic basement buried bill, oligocene sandstone and miocene reef, with pliocene and pleistocene neritic facies and bathyal shale as regional caprock
摘要以現有資料為基礎，通過對區域構造、沉積儲層、烴源巖特徵等基礎石油地質條件研究，認為南海海域各盆地經歷了斷陷期和坳陷期沉積演化，沉積了巨厚的新生代地層，自下而上發育了沖積扇相、河湖相、濱岸沼澤相、濱海相、淺海相、半深海相沉積體系，區域上存在始新統、漸新統和中新統3套烴源巖，前新生代基巖潛山、漸新統砂巖、中新統生物礁3套儲層，區域蓋層為上新統和更新統淺海半深海相泥巖。 -
Besides, the sedimentary facies of upper ganchaigou and lower ganchaigou formation were also mapped in supersequences which are the main target strata for exploration. the high resolution sequence stratigraphic framework showed the genetic relationship between the distributions of sedimentary facies and their tectonic settings. the near - source sedimentary systems such as subaqueous alluvial fan and lake - floor fan are often deposed in rise - hemicycles in the steep slope background in the north, the coarse lithology of fan - delta prograded from north to south in fall - hemicycles, and the braided stream facies are formed in the rise - hemicycles in gentle slope background in the south, braided stream facies prograded from sorth to north in the fall - hemicycles, but the lacustrine facies and salt lake facies developed in the middle part of the area
詳細的沉積相研究發現，紅獅地區第三系發育有沖積扇、水下沖積扇、河流、三角洲、扇三角洲、湖泊和湖底扇7種主要沉積相類型，並對作為區內主要勘探目的層系的下乾柴溝組和上乾柴溝組進行了以超層序為單位的沉積相平面編圖，以較高的時間解析度揭示了區內沉積相帶的平面展布及其在不同構造背景中的分佈規律，比如在北部的凹陷陡坡背景下，上升半旋迴低水位期通常發育有水下扇、湖底扇等陡岸近源特徵的沉積體系，下降半旋迴高水位期，扇三角洲相粗碎屑巖由北向南進積;在南部的凹陷緩坡背景下，上升半旋迴主要發育辮狀河流相，下降半旋迴辮狀河三角洲相由南向北進積;而中部紅柳泉一獅子溝一帶則為湖泊相沉積和鹽類沉積。 -
The upper cretaceous jingzhushan formation in the biru basin, xizang consists of a succession of coarse - grained elastic rocks in the alluvial fan - fan delta depositional system, intercalated with intermediate - acidic volcanic rocks including dacite, andesite, quartz trachyandesite and rhyolite
摘要上白堊統競柱山組為一套沖積扇扇三角洲沉積體系的粗碎屑巖，間夾由英安巖、安山巖、石英粗安巖和流紋巖組成的中酸性火山巖。 -
Based on the observation of the outcrops, we studied the details of the sedimental facies in ganchaigou formation, and analysed the variety of sedimental facies, including alluvial - fan facies, braided stream facies, fan - delta facies, lacustrine facies, lacustrine floor fan facies and storm deposit facies
摘要在野外地質剖面研究的基礎上，對柴達木盆地西部古近新近系乾柴溝組進行了詳細的沉積相研究，分析了乾柴溝組發育的沖積扇、河流、三角洲、扇三角洲、湖泊、湖底扇及風暴沉積等幾種沉積相類型。 -
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。 -
The sedimentary facies of the jurassic penglaizhen formation in the studied area can be described as follows : from the edge of the basin, the source of deposition, to the center of the sedimentation are alluvial fan facies fluvial facies fan delta facies delta facies lake facies and lake floor fan facies in turn
研究區侏羅世蓬萊鎮期沉積盆地的沉積相類型分佈，從盆緣近物源區至盆地沉降-沉積中心區依次為沖積扇、河流相、扇三角洲相、河控三角洲相、湖泊相和湖底扇相等沉積體系。 -
Formation and evolution of the shallow ground fresh water and brackish water is correlation with forming time of delta, characters of microtopography, as well as the distributing of present course and channel in alluvial - marine plain
黃河三角洲地下淡水、微鹹水分佈與形成演化與黃河河道的變遷、三角洲形成的早晚、微地貌特徵及現代河道與渠系分佈等因素密切相關。 -
Near the faulty step - break, low stand system developed, and some sediment system distribute broad, such as alluvial fan, low stand wedge, low stand fan, and so on. the sand body can form not only the trap of dying out upward and sand lens, but also fault - iithology trap. the study shows that fault - lithology trap is most important trap style in study area especially sha - 3 formation
斷階坡折附近是低水位體系域發育的重要場所，常發育沖積扇、沖蝕作用的下切河道以及低水位楔狀體、低水位扇體等沉積體系，這些砂體不僅具有形成上傾尖滅或砂巖透鏡體圈閉的條件，而且可形成斷層?巖性圈閉。
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