巖溶高原 的英文怎麼說
中文拼音 [yánrónggāoyuán]
巖溶高原
英文
karst plateau-
The variations in trace element contents and ratios may hold up a mirror to the lake - level fluctuations and climatic changes, which, in turn, have exerted a direct and important effect on the sequence stratigraphic development. collectively, the reservoir rocks from the yanchang formation consist dominantly of the delta front subfacies subaqueous distributary channel and channel - mouth bar microfacies and delta plain subfacies subaerial distributary channel microfacies fine - grained feldspar sandstones and siltstones. the reservoir rocks have been subjected to three stages of diagenetic and porosity evolution : ( 1 ) the porosity reduction by the mechanical compaction and chemical pressure solution during the early diagenetic stage ; ( 2 ) the porosity increase by the dissolution during the a substage of the late diagenetic stage, and ( 3 ) the porosity reduction by the cementation and filling during the b substage of the late diagenetic stage
系統的儲層特徵研究表明，該區延長組儲層成因類型主要為三角洲前緣水下分流河道、河口砂壩及三角洲平原水上分流河道微相細粒長石砂巖、粉砂巖；儲層巖石經歷了壓實，膠結，溶蝕等成巖作用，歷經早成巖機械壓實和化學壓溶孔隙縮小期、晚成巖a亞期溶蝕作用孔隙擴大期及晚成巖a亞期（ b亞期）膠結充填孔隙縮小期三個成巖-孔隙演化階段；儲層物性總體上具有較低孔滲、低孔滲的特點，孔隙類型主要為粒間溶孔、殘余粒間孔隙、粒內溶孔、晶間孔及晶間溶孔，裂縫不發育，儲集巖排驅壓力和中值壓力較高，孔隙結構類型以細小孔-微孔隙，微細喉-微喉型為主。The status of investigation to karst in yanping freeway are discussed, and engineering geology characteristic and problem of karst are analyzed, and then engineering geology sorting and treatment principle are put forward to karst in yanping freeway ; so this paper has a certain extent refence and instructional function for the construction of highway in karst region
摘要文章敘述了硯平高速公路巖溶勘察情況，分析了硯平高速公路巖溶的工程地質特徵及工程地質問題，提出了硯平高速公路巖溶的工程地質分類及處治原則，對巖溶地區公路的建設具有一定的參考和指導作用。The results shows that the community richness, species diversity indices and evenness of tree layer and shrub layer share the same order, of which is higher in pure limestone region than that of in pure dolomite region, but it reverse in herb layer ; the coefficient of similarity is considerably low between all plots, while species turnover rate is quite high among the plots and is higher in dolomite region than that of in limestone ; in different karst regions, karst processing leads to niches diversity characterized by special morphologies and special element geochamical features, and therefore affect the dynamic and features of plant communities
我們在最有代表性之一的貴州茂蘭喀斯特森林保護區選取純灰巖和純白雲巖兩種巖性的喀斯特環境，對其元素地球化學特徵及其中原生性植物群落的相異性和物種多樣性進行了對比，結果發現：不同巖性區域多樣性：喬木層和灌木層為純灰巖區純白雲巖區，草本層為純白雲巖區純灰巖區，總體上純灰巖區的高於純白雲巖區的；各樣地間的相似性系數都很低，相同巖性類型內的明顯高於不同巖性類型之間的相似度；物種周轉率高，且白雲巖區高於石灰巖區，種類組成差異明顯；喀斯特區可溶巖地球化學背景通過喀斯特作用導致特殊的地形條件與元素地球化學特徵，並引起局部小生境的分異從而影響植物群落特徵。The paper has made a comprehensive study to marine carbonate oolitic reservoir in triassic of feixianguan group of intra - platform taphrogenic trough basin in north - east past of sichuan basin. according to the principle of high resolution stratigraphic sequence, combined with original results gained form the area, the author have built up the base level cycles and fades model of different stages based on the surface identification mark of base level cycle using the information of geology, seismic, logging, core and outcrops
1 、依據層序地層學高解析度基準面旋迴原理與識別技術，建立了裂陷槽向上變淺直至露出水面過程中形成的基準面旋迴變化的7種特徵性識別標志，包括泥巖表面乾裂、淡水選擇性溶蝕、白雲化現象、白雲巖、石膏、伽瑪曲線高值、向上變厚、變粗序列、向上變細、變泥、變紅序列、向上值變低序列等。分享友人