层序和体系域的有机相构成及其研究意义   总被引：8，自引：0，他引：8  

郝芳  陈建渝 《地质科技情报》1995,14(3):79-83

层序地层学为沉积盆地的充填史分析和储层预测提供了有效的格架，但其在源岩评价和预测中的意义未能引起充分的重视。本文对莺海、琼东甫盆地的各沉积层序进行了有机相分析，发现（１）浅水型沉积层序中各体系域的机相构成基本相同，且有机相的侧向变化不明显；（２）在深水型层序中，海进体系域上部和高位体系域下部有机质丰度较高、类型较好，有机相层序呈Ｓ性，但有机的侧向变化明显；（３）多层序有机相的总体演化趋势反映了盆地  相似文献   

南极乔治王岛环境质量现状调查   总被引：4，自引：0，他引：4       下载免费PDF全文

蒲家彬  李宗品  邵秘华  尚龙生 《极地研究》1995,7(2):54-61

本文以１９９２／１９９３年度中国第九次南极考察期间对南极乔治王岛的表土、地衣、苔藓等样品的分析资料为基础，研究探讨了８种无机重金属元素、５种有机污染物的浓度水平。其结果表明，重金属在三种环境样品中的含量分布存在着明显的差异；地衣、苔藓两种植物呈现对不同重金属元素的不同富集能力；∑６６６、∑ＤＤＴ和ＰＣＢｓ及油的沾污亦很明显。本文还对污染物质的来源、南极环境样品历次调查分析的结果以及世界部分地区的背景水平进行了讨论和比较  相似文献   

Biological and physical events involved in the origin,effects, and control of organic matter in solar saltworks     

Joseph S. Davis  Mario Giordano 《International Journal of Salt Lake Research》1995,4(4):335-347

Aspects of communities and events in the concentrating ponds (S.G. 1.130 to 1.214) and salt crystallizing ponds (S.G. 1.215 to 1.264) of solar saltworks pertinent to salt manufacture are described. Communities that aid salt manufacture enable continuous and efficient production of high quality salt at a saltworks' design capacity, and they provide important controls on levels of organic matter in the brine. Fluctuating salinities, high concentrations of nutrients, and petroleum products are disturbances that causeAphanothece halophytica andDunaliella salina to release excessive quantities of organic matter, and that suppress or cause death to nutrient stripping organisms. Disturbances result in decreased quality and quantity of salt and increased costs for salt harvest, washing, and pond upkeep. Organic matter can be controlled by management techniques that keep nutrient stripping communities at proper levels and maintain a narrow and unchanging range of salinities in each pond, by constructing pond dikes able to withstand wind and water erosion, and by preventing spills of petroleum products in the ponds.  相似文献   

大气有机污染分析和评价：Ⅱ.几种常见有机污染源及其评价     

郎庆勇 《岩矿测试》1995,14(4):274-280

收集了以ＷｏｌｆｇａｎｇＦＲｏｇｇｅ博士研究工作为主的文献，对几种常见大气有机污染源进行了讨论，列出了由不同污染源所排放的可辨别有机合物的类别、含量以及用于定量分析和评价的示踪化合物。  相似文献   

自燃煤有机地球化学特征研究   总被引：1，自引：0，他引：1  

舒新前 《中国煤田地质》1995,7(4):52-56

通过有机地球化学研究，发现神府、焦坪、灵武三种自燃煤的ＣＨ２Ｃｌ２抽提率、族组分组成、有机地球化学参数有较大的差别。色谱曲线表现为两种类型，即单峰型和双峰型。生物标志物组合也有较大的差别。由于这种有机地球化学特征的不同，导致了自燃煤的自燃属性的不同。因而，有机地球化学方法可以用于自燃煤的研究。  相似文献   

硫铝酸盐水泥浆性能调节方案   总被引：2，自引：0，他引：2       下载免费PDF全文

顾元威  王桂敏 《探矿工程》1995,(6):22-23

讨论了水灰比、抖浆水温和有机处理剂对硫铝酸盐水泥浆性能的影响，提出了该水泥浆性能的调节方法。  相似文献   

Noble gases dissolved in groundwater in a volcanic aquifer: Helium isotopes in the Kumamoto Plain     

Y. Mahara 《Environmental Geology》1995,25(4):215-224

This study Investigates a tracing method using dissolved noble gases to survey the groundwater flow in a large groundwater basin. The tracing method is based on measuring the concentrations of noble gases and the ratio of helium isotopes in groundwater samples. Since it is very difficult to detect trace amounts of noble gases and helium with high accuracy in a 15-ml groundwater sample, dissolved gases were extracted and purified, then a high-resolution mass spectrometer was used for measurement and comparison with standard samples. We used this method with samples from a confined aquifer formed by the deposition of pyroclastic flow in the Kumamoto Plain on the west side of Mt. Aso in central Kyushu, Japan. The groundwater basin under the plain is divided into four small basins, based on the helium concentrations and isotope ratios, with two major groundwater flows. One flow is buried by the Aso pyroclastic flow along the old Kase River; the other is along the Tsuboi River Valley. These two groundwater flows were identified from the different helium isotope-ratios. The helium component from the deep mantle is mixed into the groundwater under the Kumamoto Plain. Finally, data on the concentrations and ratios of³He to⁴He in groundwater samples were used to determine the location of faults in the volcanic aquifer.  相似文献   

不同碳源对球孢鱼腥藻生长的影响   总被引：2，自引：0，他引：2  

沈银武  利群  朱家明  路景舒  王乾麟 《湖泊科学》1993,5(4):341-344

本文研究了有机碳源和无机碳源对球胞鱼腥藻生长的影响,结果表明:有机碳源中葡萄糖以0.5—1.0μg/mL、蔗糖以5.0μg/mL促进其生长效果最好;无机碳源中,碳酸钠以10.0—15.0μg/mL、碳酸氢钠以10.0μg/mL效果最好。葡萄糖和蔗糖的浓度高低对球孢鱼腥藻叶绿素a的含量没有明显影响,但前者略高于后者。碳酸钠和碳酸氢钠的浓度在5.0μg/mL时均提高了叶绿素a含量。四种碳源都提高了球孢鱼腥藻的同氮活性,有机碳源中蔗糖优于葡萄塘,无机碳源中碳酸钠优于碳酸氢钠。  相似文献   

Organic matter of the Mulhouse Basin, France: a synthesis     

P. Hofmann  A.Y. Huc  B. Carpentier  P. Schaeffer  P. Albrecht  B. Kelly  J.R. Maxwell  J.S.Sinninghe Damst  J.W. de Leeuw  D. Leythaeuser 《Organic Geochemistry》1993,20(8)

The lower Oligocene evaporite sequence of the Mulhouse Basin (France) contains organic matter-rich marl deposits. These marls display an overall cyclic variation of sedimentation rate, organic carbon content, hydrogen index and selected molecular parameters over a 30 m thick stratigraphic interval. The integration of all sedimentological and geochemical parameters has allowed the reconstruction and characterization of the paleoenvironment of deposition. The marls were deposited in a perennial lake that was at times connected to the sea. Two organic facies end members could be assigned to a lake stage with a marine connection and a lake stage that received dominantly continental water input. The overall stratigraphic variation in the organic matter content is interpreted to reflect the adaptation of the Oligocene flora to the changing paleoclimate and environmental conditions.  相似文献   

煤显微组分中有机硫的微区分析和分布特征   总被引：6，自引：1，他引：6  

任德贻  郭国莉 《煤田地质与勘探》1993,21(1):27-30

应用扫描电镜、能谱仪和波谱仪测定了煤中有机硫含量。a.在镜质体有机硫含量低于0.50％的煤中,惰质体的有机硫含量与其相近。而在镜质体有机硫含量高于0.5％的煤中,惰质体的有机硫含量大多为镜质体的40％～50％。各种镜质体和惰质体的有机硫含量随其凝胶化程度增高而增加。b.聚煤古地理环境对煤中有机硫含量起决定性作用。以镜质体为例,形成于湖滨三角洲平原环境的神木煤含有机硫0.21％,形成于滨海三角洲平原环境的水城大河边煤含有机硫0.84％,形成于泻湖海湾环境的兖州晚石炭世煤含有机硫2.24％。  相似文献