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cambrian adj.1.〔詩〕威爾士的。2.【地質學;地理學】寒武系...

Recent research suggests that the period prior to the cambrian explosion saw the gradual evolution of a “ genetic tool kit “ of genes that govern developmental processes 最近研究建議,期間在寒武紀爆炸之前看了“基因工具箱的逐漸演變治理發展過程的“基因。

This event is sometimes called the “ cambrian explosion “ , because of the relatively short time over which this diversity of forms appears 這次事件有時稱“寒武紀爆炸“ ,由于形式這變化看上去的相對地短時間。

“ cambrian scientists will certainly find them very interesting , “ terfelt said 他說: “研究寒武紀的科學家們一定會對此感興趣。 ”

Recent research suggests that the period prior to the cambrian explosion saw the gradual evolution of a “ genetic tool kit “ of genes that govern developmental processes 最近研究建議,期間在寒武紀爆炸之前看了“基因工具箱的逐漸演變治理發展過程的“基因。

This event is sometimes called the “ cambrian explosion “ , because of the relatively short time over which this diversity of forms appears 這次事件有時稱“寒武紀爆炸“ ,由于形式這變化看上去的相對地短時間。

“ cambrian scientists will certainly find them very interesting , “ terfelt said 他說: “研究寒武紀的科學家們一定會對此感興趣。 ”

cambrian system

The section of the cambrian in xiushan of chongqing has been well re - appraised over again by studying its stratigraphy , sedimentary petrology , sedimentary facies and environment in this thesis 通過較系統地研究重慶秀山溶溪寒武系剖面的地層學、沉積巖石學、沉積相及環境,本文對該剖面進行了重新認識。

Starting from the cambrian period ( 530 mya ) and ending at the early triassic period ( 248 mya ) , walking with monsters shows the life and death struggles prehistoric creatures before the dinosaurs went through 本片介紹了在這段時期內的各種史前生物的生死搏斗,同時也描繪了我們人類最早祖先的真實模樣。

Follow - up studies using the molecular clock produced estimates for this split that varied significantly , ranging from as old as one billion years ago to as young as just before the cambrian period 后來使用分子時鐘來估算分支時間的研究結果,差異都很大,可能早至10億年前,晚至寒武紀即將開始時。

Since 1991 , morphological and ecological investigation of the brachiopods in the early cambrian chengjiang lagerstatte has been done extensively and intensively 澄江動物群腕足動物研究已進入了全面、系統的研究階段,對其生態學、形態學、分類學和埋藏學等不同方面均開展了深入而詳盡的研究工作。

This paper also discusses the strontium isotope evolution curve published over the world , present strontium isotope results of the section of cambrian in xiushan of chongqing 本文評述了國際上已有的寒武系海相碳酸鹽的鍶同位素演化曲線,公布了重慶秀山寒武系海相碳酸鹽的鍶同位素分析結果。

The key point of this thesis is the strontium isotope composition and control factors of cambrian marine carbonate , upper yangtze platform , which the samples were collected from xiushan section in chongqing 論文研究重慶市秀山溶溪寒武系海相碳酸鹽的鍶同位素組成及主要控制因素。

The development of fault connecting to origin rock is basic condition of cambrian - ordovicion reservoir formation . the trap of jurassic is restricted by the origin rocks depression bound 通源斷裂發育是來源于寒武-奧陶系的油氣成藏的基本條件,而侏羅系油藏則受生烴凹陷范圍限制。

On the basis of lithofacies palaeogeographic map , the sedimentary and lithofacies palaeogeographic characteristics of the middle yangtze region during the late sinian and early cambrian are also described 晚震旦世巖相古地理格局由碳酸鹽臺地(鄂中臺地)和南邊的臺緣盆地組成。

The new framework , comprising a pre - trilobite series and three trilobite - dominated series , reflects the major evolutional stages of the life on earth during cambrian period 新的劃分方案包括1個“前三葉蟲統”和3個“三葉蟲優勢統” ,反映了寒武紀生命發展的主要階段。

Micritic dolostone occurs widely in the middle and upper cambrian and is yellowish brown and brickcolored red , in which parallel laminae , bird ' s - eyes and mud - cracks are developed 準同生白云巖廣泛出現于中上寒武統,巖石呈土黃色、磚紅色,具紋層、烏眼、乾裂構造。

Fossil evidence has suggested that there was a major jump in eukaryotic complexity some 600 million years ago , during a period dubbed the cambrian ex - plosion 化石證據已經顯示出在大約在6億年前,原核細胞復雜體在被稱為“寒武紀大爆發”的時期發生了一次大的飛躍。

( 2 ) the paleozoic in the area has two pairs of source rocks , or cambrian - ordovician and carboniferous - permian , which are greater affected by tectonic evolution ( 2 )研究區古生界存在寒武-奧陶系和石炭-二疊系兩套烴源巖,其生烴期受構造演化的影響較大。

Recent research suggests that the period prior to the cambrian explosion saw the gradual evolution of a “ genetic tool kit “ of genes that govern developmental processes 最近研究建議,期間在寒武紀爆炸之前看了“基因工具箱的逐漸演變治理發展過程的“基因。