lower cambrian 中文意思是什麼
lower cambrian
解釋
早寒武世-
Helcionelloid mollusk from the lower cambrian heilinpu formation, chengjiang, yunnan
雲南澄江早寒武世黑林鋪組軟體動物太陽女神螺 -
The causes are discussed from aspects of oil - gas source beds, trapping and storing space, oil - gas migration channel and thick proofing layers, oil - gas maturity stage and allocation of effective trapping stage, suggesting the searching of primary oil - gas pool of the cambrian and lower ordovician at the relatively shallow layers and surrounding places with faults developed
從油氣源層、圈閉與儲集空間、油氣運移通道與巨厚隔層、油氣成熟期與圈閉有效期配置等四個方面探討了未獲油氣之原因，提示在滿加爾坳陷腹地，相對較淺部位及周邊斷裂發育部位尋找寒武系和下奧陶統的原生油氣藏。 -
The clastic rocks distribute mainly in the lower cambrian and the carbonate rocks in the upper part of the lower cambrian and middle and upper cambrian
碎屑巖主要分佈在下寒武統；下寒武統上部和中、上寒武統主要由碳酸鹽巖構成。 -
But in contrast of the research of chemical weathering of other rocks, such as granites and basalts, the research of chemical weathering of black shales both in width and depth still remains much to advance. after reading and investigating widely, we selected lower - cambrian black shales and their weathering profiles in hunan province as research objects of our work at first. then, based on field investigation of weathering status of lower - cambrian black shales and it ' s relationship with soil composition and human activities in hunan, we studied changes of chemical composition such as major and trace elements before and after weathering of black shales by comparison
根據文獻閱讀和野外調查，本文選擇了湖南安化、桃江、望城等地下寒武統黑色頁巖及有關風化剖面作為研究對象，並在查明湖南下寒武統黑色頁巖的風化現狀及其與土壤組成、人類活動的關系的基礎上，對比研究了黑色頁巖風化前後主量和微量元素等化學組成的變化，探討了元素的富集和遷移轉化機制以及黑色頁巖風化與區域環境質量的關系，得出了如下幾點主要成果和認識： （ 1 ） ti是黑色頁巖風化過程中的「不活動」元素，可作為參照元素，對其它元素的活動性進行質量平衡計算。 -
The lower paleozoic continent marginal sedimentary strata in the north kunlun massif are sinian - cambrian alajiaoyi group and ordovician pishigaisayi formation. the former is composed of high maturity flysch deposit, the later consist of continental shelf deposit such as carbonate and slate and sandstone. these rocks implies that they might form at passive continental margin
與其曼于特蛇綠巖相關的早古生代邊緣沉積巖在昆北地塊上為震旦?寒武系阿拉叫依巖群、奧陶系皮什蓋薩依巖組，前者為一套成熟度較高的陸源碎屑復理石沉積，後者為碳酸鹽巖和含碳板巖砂巖等陸棚沉積，顯示其具被動陸緣性質。 -
The geological setting of chengjiang biota firstly, the pattern of chinese tectonic has been cited, which can help us to understand the place of china in the world clearly and easily. secondly, the lower cambrian of china and the early cambrian geomorph of eastern yunnan have been included
澄江生物群的地質構造背景首先介紹了中國區域大地構造格局，其次是關于中國的寒武系和滇東地區早寒武世古地理概貌的論述，緊接著是澄江化石庫的古地理概貌。 -
Comparisons of the sequence with those reported from the lower cambrian of northwestern hunan province as well as lower cambrian ooid banks of central guizhou province would be of much implication
該風暴沉積的發現，對建立與黔中和湘西北同期地層的沉積學對比剖面、探討風暴沉積模式的空間變化具有重要意義。 -
Abstract : the gongxi barite deposit hosts in the niutitang formation of the lower cambrian
文摘:湖南新晃貢溪重晶石礦床賦存於下寒武統牛蹄塘組中。 -
The lower palaeozoic group mainly includes cambrian, medial and lower ordovician, which are marine carbonate in the district
下古生界包括寒武系和下、中奧陶統，主要由海相碳酸鹽巖構成。 -
The study result show that tarim basin has three major better hydrocarbon source rocks, which are the cambrian - ordovician, carboniferous - lower permian and triassic - tertiary source rocks, and high efficiency gas reservoirs and seal rocks, forming five sets of regional associations of gas reservoir and capping bed
在盆地內廣泛發育有寒武系奧陶系、石炭系下二疊統和三疊系侏羅系等3套優質烴源巖，以及多套優質儲層和蓋層，形成了5套區域性儲蓋組合。 -
The condition of origin rocks is superiority as there develope two series hydrocarbon origin rocks of cambrian - ordovicion and jurassic. the former has evolved in high mature period to produce gas meanwhile the later only reach lower or mature period
寒武?奧陶系烴源巖在奧陶紀未已達高成熟階段，以生氣為主，侏羅系烴源巖目前處于低成熟?成熟階段，它們相互獨立、彼此復合，構成復式油氣成藏系統。
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