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oolite n.1.【地質學;地理學】鮞石,鮞狀巖。2.〔O-〕英國...

oology

Owing to extensive distribution of the oolite in t1f3 in west hubei and east chongqing , the oolitic beach reservoir is becoming a focus to research in the region . based on the monographic studies of depositional environment and sedimentary facies , diagenesis and pore evolvement , elementary characteristics of the reservoir , the paper endeavored to educe comprehensive appreciation and forecast to oolitic beach reservoir in t1f3 in west hubei and east chongqing 本論文即圍繞鮞灘儲層這個中心,在對沉積環境與沉積相、成巖作用與孔隙演化以及儲層基本特征等進行專題研究的基礎上,力爭對鄂西渝東區飛三段鮞灘儲層作出綜合評價與預測。

However , the authors discovered recently that the top and bottom surfaces of the loushanguan formation are palaeokarst unconformity interfaces , and there are a lot of interbeds of granular ( oolite , pisolite and oncolite ) dolomite and algae - mat dolomite , especially sedimentary structures such as the bird ? s eye , stromatolite , cross bedding and tepee structures 但筆者新近研究發現,其頂、底均為古巖溶不整合面,并有大量顆粒(鮞、豆、核形石)白云巖和藻紋層白云巖夾層,還有許多鳥眼構造、疊層石構造、交錯層理、帳蓬構造存在。

The middle part is a set of large tidal range tidal sequence including oolitic shoal fades which is made up of bedded - oolite dolomite and oolite limestone , gypsum - tidal fades in sabkha environment which consists of bedded gypsolyte , and gypsolyte - bearing gypsum - dolomite tidal facies 中部為層狀鮞粒白云巖、鮞粒灰巖的潮下鮞粒灘相與薩布哈環境的富層狀石膏巖的膏坪相、含石膏巖的膏云坪相組成的大潮差蒸發潮坪層序。

The thin - beded siliceous - rocks include chert and depositional quartz with textures of oolite and pebble 矽質巖包括燧石和沈積石英巖,呈薄層狀產出,沈積石英巖具鮞狀、礫狀結構。

Oolite lime sand packs naturally with 40% porosity because the particles are essentially spheroids . 自然堆積的灰質鮞粒砂具有40的孔隙度,因為其顆粒其本上都是球狀的。