ancient sediments 中文意思是什麼
ancient sediments
解釋
古代沉積物-
Biomarker has a wide application in the research of petroleum geology, such as different types of organics thermal evolution, ancient sediments ' environment and so on
摘要生物標志化合物在石油地質中應用廣泛，可應用於源巖有機質類型和古沉積環境評價以及熱演化階段的確定等。 -
Carbonate sediments in all environments are basically products of an ancient biochemical system.
一切環境的碳酸鹽沉積物，基本上都是古代生物化學體系的產物。 -
Hong kong lies on the southern edge of an ancient land mass. the oldest exposed rocks are devonian fluvial sediments that were deposited 400million years ago
香港處于古陸塊的南緣，最老的外露巖石是在4億年前的泥盆紀時期，由河流沖積形成的沉積巖。 -
( 2 ) the analysis by characteristic section planes can draw that the ancient climate in deposit period of the characteristic section plane one sediments ( about seventeen thousand years before present ) is warm - dry and has relative humid and dry evolution rule, from fifteen to thirty years as its evolution period, that the ancient climate in deposit period of the characteristic section plane two sediments ( about fourteen thousand years before present ) is humid and has relative alternate very humid and humid evolution rule, from two to fourteen years as its evolution rule
（ 2 ）通過對兩個典型剖面的綜合分析得出，典型剖面沉積物沉積時期（距今約17kab . p . ）的古氣候特徵總體上為暖干，並具有以15 30年為演化周期，相對的濕潤-乾燥-濕潤的演變規律。典型剖面沉積物沉積時期（距今約14kab . p . ）的古氣候總體特徵為濕潤，並具有以2 14年為演變周期，相對的很濕潤-濕潤交替的演化規律。 -
Several lines of evidence, including studies on geochemistry of trace elements and rare earth elements, isotopes ( s, c, o, d, and pb ), and fluid inclusions, suggest that the main ore - forming materials were scavenged from the contemporaneous sediments and that the fluids were predominantly derived from deep circulated basin brines, recharged by meteoric water, and ancient seawater
微量元素、稀土元素、同位素（ s 、 c 、 o 、 d 、 pb ）和流體包裹體特徵表明成礦物質來源於同沉積的賦礦圍巖，成礦流體系大氣降水為主要補給源的深循環盆地鹵水和與沉積物發生了同位素交換的埋藏古海水。 -
By studying the ancient barrier lake sediments, this paper mainly probes into the ancient climate evolution rule of more scale and less from twenty - two thousand to ten thousand years before present, diexi, minjiang river. moreover, influences to lower reaches of minjiang river is simply discussed because of die out of the ancient barrier. the using correlative theories in this thesis are mc chronology, sedimentology, isotope geology, environmental geology, geomorphology
本論文運用~ （ 14 ） c年代學、沉積學、同位素地質學、地貌學等學科的有關理論，通過對岷江疊溪古堰塞湖湖相沉積物的研究，採用沉積物碳酸鹽碳氧同位素等多環境代用指標，研究岷江疊溪地區距今約22千年10千年古氣候演化規律，討論了古堰塞湖形成演化過程與地質環境的相關性。 -
The implying environmental substitute indicators are carbonate carbon and oxygen isotopes and so on. the main conclusions drawn from this paper are as follows : ( 1 ) the ancient climate evolution, from twenty - two thousand to ten thousand years before present, diexi, minjiang river, is from dryness to wetness and can be divided into six phases and two periods by analyzing the ancient barrier lake sediments through multi - environment indicators, and its evolution cycle is three thousand years or so
主要得出以下幾點結論： （ 1 ）通過利用多環境代用指標對岷江疊溪古堰塞湖沉積物的綜合分析得出，岷江疊溪地區距今約22千年至10千年間的古氣候經歷了乾旱濕潤乾旱的演化過程，演變周期大約為3千年，並將其劃分為六階段、兩時期。 -
( 3 ) the forming wrapping structure because of interlayer between silt and clay at the transition part from the fourth layer to the fifth layer in the sediments section. according to this, intense change of the geoenvironment in this area at the period of filling up of the ancient barrier lake is presumed
（ 3 ）通過在沉積物剖面的第四層到第五層過渡的部位可以看到粉砂土層和粘土土層相互滲透而形成的包卷構造，推測古堰塞湖淤積時期內該區域的地質環境發生了重大改變。 -
The carbon is also abundant in the rocks, and it persists through a thick pile of ancient sediments that represents as much as a million or more years of slow deposition
巖石中也有很豐富的碳，厚厚的古老沉積巖中一直都有碳的存在，這層沉積巖代表了超過百萬年的緩慢沉澱過程。
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