旋迴階地 的英文怎麼說
中文拼音 [xuánhuíjiēde]
旋迴階地
英文
cyclic terrace-
( 2 ) providing the new information on large - scale, superlarge - scale deposits evolution in time and characteristic metallogenic events of the main stages during geodynanmic evolution ; summarizing the feature of large - scale metallogenic processes in some giant deposit clusters in the world and concluding the main type of large - scale metallogenic processes in the tectonic cycle of lithosphere
2 ）較詳細地提供了全球主要金屬礦種大型、巨型礦床隨時間演化的新資料，闡述了地球動力學演化歷史中主要成礦階段的特徵成礦事件，首次總結了世界一些主要巨型礦集區的大規模成礦作用及其地球動力學背景特徵，並歸納了巖石圈構造演化旋迴中的大規模成礦作用類型。2. by the analysis of grain - size accumulative centigrade content, grain - size composition and grain - size parameters performed on samples in baijiaziu profile and mafangtan profile, nine stages of hydrological and climatic changes since the last 1300 years have been distinguished. the first, the third, the fifth, the seventh and the ninth layers of the stratigraphical sequence are finer while the second, the fourth, the sixth and the eighth are coarser
據此，將白家嘴剖面劃分為9個地層單位， 4個沉積旋迴，其中剖面1 、 3 、 5 、 7 、 9層較細， 2 、 4 、 6 、 8層較粗，並認為此沉積序列表明近1 . 3ka以來渭河古水文與古氣候大致經歷了9個變化階段。The polyphasic and episodic tectonism of these basins usually had a significant influence on the regional deposition - erosion cycles and the depositional patterns
盆地構造演化的階段性、旋迴性及多期的構造變革對盆內多旋迴的沉積剝蝕過程的疊加和原型盆地的疊合等可產生深刻的影響。The results indicate that these parameters in profile change closely with geotectonic cycles as follows : sulfur, colloid and asphaltene contents keep the lowest values in devonian, triassic, jurassic and tertiary ; they are in accordance with regressive geotectonic phases, of which the maximum values appear to be correspond to the largest - scale marine transgressions occurred in caledonian cycle, hercynian cycle and middle phase of alpine cycle
指出，這些石油參數在剖面上的變化與大地構造旋迴有密切關系：硫，膠質和瀝青質的含量在泥盆紀、三疊紀、侏羅紀和新近紀為最低值，它們與海退構造階段相一致；石油化學成分最大值與加里東旋迴、海西旋迴和阿爾卑斯旋迴中期的最大海侵相一致。For hydrodynamic force, the oil - gas would migrate at vertical and lateral, and accumulate at suit traps. at the same time, for hydrogeology gyrations, petroleum would periodic migrate and ringed distribute. therefore, ground fluid is at different hydrodynamic systems
同時，由於古水文地質的旋迴性導致同一流體動力體系內不同流體動力系統的油氣一致階段式運移，並形成一個以凹陷為單元階梯式一環帶狀的油氣分佈規律。The further study shows that the sandstones at the bottom of the lower ganchaigou formation, which is a tr lithostratigraphic unit, were deposited in different stages of base level cycle, and they are not chronostratigraphic unit. so, to identify different sequences, especially high order sequences in analysis of terrestrial stratigraphic sequences, the sequence distribution feature must be fully consided. this view has practical significance for recognizing forming, evolution and filling history of qaidam baisn correctly, and has both theorical and practical meaning for directing further oil exploration
研究還表明，傳統巖石地層單位中下乾柴溝組底部的砂巖代表了基準面變化旋迴不同階段沉積的產物，它們屬于不同的成因單位，也非等時地層單位，因此，在進行陸相層序地層分析時，各級層序尤其是高級層序的識別要充分考慮面上的層序展布特點，這一觀點對正確認識柴達木盆地的形成演化和沉積充填歷史，指導今後的勘探具有一定的理論和實際意義。Beishan orogenic belt passed complex geological evolution by multistage plate divergence - subduction - collision - fitting, with the characteristics of ploycycle multiple orogeny
摘要北山造山帶經歷多期次、多階段的板塊裂解俯沖碰撞拼合的復雜地質演化歷程，具多旋迴復合造山的特色。On the basis of analysis on the characteristics of structural evolution, the growth of the source rocks is analyzed. in the period of mesozoic - palaeozoic, caledonian events and the evolution of hercynian - early indo - chinese cycle are experienced in two - phase marine passive continental margin and craton basin in the lower and middle yangtze region, by which stable enormous thick mesozoic - palaeozoic deposites are induced, six sets of source rocks are produced, it has a strong capacity of hydrocarbon generation
摘要通過構造演化特徵分析了海相烴源巖的發育，中、下揚子區中古生代經歷了加里東和海西早印支旋迴兩個階段的海相被動大陸邊緣和克拉通盆地演化，形成了巖性穩定的巨厚中古生界，發育了6套烴源巖，具有較強的生烴能力。分享友人