| 1. | Oil is formed by the decay of animal, and possibly some plant, remains in a reducing environment in sedimentary deposits .
石油是在沉积物还原环境中由动物遗骸，可能还有一些植物遗骸的分解所形成的。 |
| 2. | Of fatty acids , it is elucidated that fatty acids could be easily degraded in the anoxic than the oxide environment
参数，表明在还原环境中的脂肪酸的降解过程明显于氧化环境。 |
| 3. | The finding of long chain alkyl benzene proves the relatively strong reducing environments during deposition at that time
长链烷基苯的检出进一步验证了当时沉积物处于较强还原环境。 |
| 4. | Upward micro - seepage of hydrocarbon causes reductive environment in the overlying strata and the oil & gas exploitation intensifies formation of the reductive environment
摘要油气田烃类的垂向微渗漏造成上覆地层的还原环境，油气田的开采则加剧了还原环境的形成。 |
| 5. | Combining principal factors scores , a * and first derivative of 555nm reflectance , we discussed modem sediment environment in shelf of the yellow sea and east china sea
结合主因子得分、 a ~ *和re555nm一阶导数的分布，讨论了黄海、东海陆架的现代沉积环境(氧化还原环境) 。 |
| 6. | Analysis of change of the nutrient concentration in porewater with depth indicates the relation between the oxidative - reductive conditions and the nutrient concentration
对沉积物中孔隙水营养盐浓度随深度的变化分析，表明了沉积物孔隙水中营养盐浓度变化与氧化还原环境的关系。 |
| 7. | Alkanes . the variation of h l ration along the core could reflect the change of the yellow river in the history . the observation of the reduced cpi value may suggest the dryness and dams over the yellow river in these days . with the ratio of brc
在讨论氧化环境e5和还原环境e3中脂肪酸的分布和行为中，脂肪酸作为较易改造降解的化合物，结合一些指标brc |
| 8. | According to the study of biomarker of the northern ordos basin , the hydrocarbon resource rocks cane from mixed - source of organics of the input of altitude plant and plankton , and they were fanned in freshwater - tiny salt , deep lake and reductive surroundings
在鄂尔多斯北部地区的研究表明，该区烃源岩母质来源于高等植物与浮游生物共输入的混源有机质，其形成于淡水微咸水深湖相还原环境中。 |
| 9. | This paper deals with the formation of reductive environment in xinchang oil & gas field and discusses the formation mechanism from analysis of micro - organism related to seepage of the oil & gas , pyrite occurring at the ground surface and hydrocarbon dissolved in water of the wells in the oil & gas field
对新场气田还原环境的形成进行了研究，初步探讨了这种还原环境的形成机制；并从与油气渗漏有关的微生物、气田地表黄铁矿的分析、井水中水溶烃的分析三方面来说明气田地表的还原环境的形成。 |
| 10. | 4 ) the characteristic of tricyclic terpane reflected the source input of algae . the predominance of 4 - methylsterane and dinosterane , and the c _ ( 27 ) - sterane predominance " v " distribution pattern all indicate the great contribution of algae source input . based on the ratio of sterane c2920s / ( 20s + 20r ) and c29 / ( + ) , the source rocks can be regarded as typical immature source rocks
2 、利用丰富的生物标志化合物信息，分析解释了生源构成、沉积环境、有机质演化等特征，表明德南洼陷主力烃源岩的生源构成是以菌藻类微生物为主且含有一定陆生植物输入的混合生源，沉积环境为半咸水-咸水还原环境，沉积水体具有“层状”特点，表层盐度高，底层还原性强。 |
