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oxidation environment
相关语句
  氧化环境
    In turn, during the postglacial period, the CaCO_3 and Al_2O_3 contents became higher, and the ratios of Na to Al , Mg to Al and Na to K decreased, which reflected that the sedimentary environment became an open oxidation environment, the climate became humid and hot with a stronger condition of chemical weathering.
    冰后期褐铁矿出现高含量,钠与铝、镁与铝和钠与钾的比值均降低,Al2O3和CaCO3含量增高,反映沉积环境渐变为开放的氧化环境,气候转变为化学风化作用较强的湿热气候;
短句来源
    Factor F1 indicates the oxidation environment and is correlated with the terrigenous material,factor F2 indicates the weak oxidation environment,and factor F3 indicates the weak reduction environment. The wavelength ranges of principal factors F1,F2 and F3 are 405 to 445 nm and 495 to 595 nm,605 to 695 nm and 445 to 485 nm,respectively.
    主因子F1指示氧化环境,并与陆源物质相关,F2指示弱氧化环境,F3指示弱还原环境,主因子的波长范围分别是405~445 nm和495~595 nm,605~695 nm,445~485 nm。
短句来源
    The cold and oxygen-rich Antarctic Bottom Water not only provided a favorable oxidation environment for the formation of crusts,but also brought about a broad and regional sedimentation hiatus to create a growth place for the crusts.
    冷的、富氧的南极底层水不仅为结壳的形成提供了良好的氧化环境,而且造成了广阔的区域性的沉积间断,从而为结壳提供了生长场所。
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  oxidation environment
Hence, it is evident that although the aluminide coating provides relatively adequate resistance towards oxidation environment, this protection was ineffective under the SO2-bearing atmosphere.
      
The hematite usually developed in an oxidation environment with warm and wet climate.
      
The crystalline V2O5 phase is not affected by the butane oxidation environment.
      
Dry oxygen environment was also used to investigate the tribological behavior in a severe oxidation environment.
      


The content of soluble Fe ̄(3+) and Fe ̄(2+) in sediment is one of the most important indi-cators reflecting the reduction-oxidation environment. The ratio of Fe ̄(3+) /Fe ̄(2+) in marinesediment has been applied to marine geology and geochemical exploration for oil andgas. In the case that soluble ferrous iron(Fe ̄(2+))can be easily oxidated under normalcondition , the study is mainly focused on preservation condition for marine sedimentsample for soluble iron analysis (including temperature,time etc.)。 he...

The content of soluble Fe ̄(3+) and Fe ̄(2+) in sediment is one of the most important indi-cators reflecting the reduction-oxidation environment. The ratio of Fe ̄(3+) /Fe ̄(2+) in marinesediment has been applied to marine geology and geochemical exploration for oil andgas. In the case that soluble ferrous iron(Fe ̄(2+))can be easily oxidated under normalcondition , the study is mainly focused on preservation condition for marine sedimentsample for soluble iron analysis (including temperature,time etc.)。 he result shows that the change of Fe ̄(3+)/Fe ̄(2+) ratio in the samples is very little af-ter they have been preserved for as long as 90 days in the place where the temperature isbelow 10℃.

沉积物可溶性Fe ̄(3+)、Fe ̄(2+)含量变化,是反映氧化还原环境的重要指标之一,海洋沉积物Fe ̄(3+)/Fe ̄(2+)比值已被应用于海洋地质及油气化探上。可溶性亚铁很容易被氧化,为此我们进行了海洋沉积物可溶铁样保存条件(温度、时间)的试验研究。试验结果表明:在10℃以下温度条件保存的海洋沉积物样品其可溶铁Fe ̄(3+)/Fe ̄(2+)比值在90天内变化甚微。

The reasearch area of polymetallic nodules is located between Clariion Fracture and Clipperton Fracture, where polymetallic nodule resources are most abudant. The authors have investigated in this area for many times, and have obtainted a lot of materials and samples. The todorokite existing in nodules as the most useful manganese mineral is in a close relationship with many metallic elements. To analyse the distribution of todorokite and its relative factors is meaningful for probing into the nodules' formation...

The reasearch area of polymetallic nodules is located between Clariion Fracture and Clipperton Fracture, where polymetallic nodule resources are most abudant. The authors have investigated in this area for many times, and have obtainted a lot of materials and samples. The todorokite existing in nodules as the most useful manganese mineral is in a close relationship with many metallic elements. To analyse the distribution of todorokite and its relative factors is meaningful for probing into the nodules' formation mechanism. For its poor crystallinity and tiny grain, to identify todorokite is very difficult. By all sorts of analysis methods, the authors tried to prove the existence of todorokite, to study its mineral features and the relationships among its main metallic elements, and then to provide scientific basis for ore dressing and metallurgy.The study result reveals: 1) There exists todorokite in marine nodules that act as the most important manganese mineral phase. Its optic characteristic, x-ray diffraction analysis data and cell parameters are close to those of manganese. Infrared analysis also show typical todorokite spectrums. Electron microscope analysis suggests that the manganese in crystallizing band is mainly todorokite and its Mn, Cu, Ni contents are higher than those in amorphous band. 2)The todorokite content in coarse-surface nodules in deep-sea plain is often richer than that in smooth-surface nodules found in seamount. Todorokite is abundant when the substratum structure is laninar, compact, or taxitic.The paper suggests that the factors causing todorokite distributed in such a way are mainly related with the local geochemical environment. The reduction-oxidation potential value is a direct factor which affects the formation of todorokite. The low reduction-oxidation potential is helpful. The isomorph of some metal elements such as Mn, Ni, Cu, Zn, is positively related to manganese. The slight reduction-oxidation environment and peneliquid substratum are an ideal horizon which is favourable not only to the migration of the Mn ion, but also to the accumulation of Mn. The metal elements engendered by dissolution of the living beings can promote the formation of manganese noudules. Recrystalization also changes a part of amorphous body into todorokite.Based on the study of the nodules' mineralogy, it is suggested that the best mineral resource for ore dressing and metallurgy is rough-surface nodules and semi-rough-surface nodules.

本文通过多种分析手段,论证了深海结核中钡镁锰矿的存在和它的矿物学特征及其与主要金属元素间的关系,探讨了影响钡镁锰矿分布的主要因素。是:与当地的地化环境有关,氧化还原电位的高低直接影响着钡镁锰矿的形成;Eh值低的环境有利于它的生成;阳离子(如Mn2+、Ni2+、Cu2+、Zn2+等)的类质同象又往往造成Mn和这些元素成正相关;弱氧化还原环境并呈半流动态的沉积物液化层有利于Mn2+迁移,又是Mn聚集的地方,它为钡镁锰矿生成的理想层位;后期重结晶作用,又导致部分非晶质转化成钡镁锰矿;超微生物对深海锰结核──锰质核形石乃至钡镁锰矿的生成起着建造者的作用。认为:在选矿冶炼时,以选择表面粗糙或半粗糙型结核为最佳矿样。

The structural and tectonic features of cobalt-rich ferromanganese crusts and their mineralogical and chemical composion from the MA and MC seamounts, the Magellan Seamounts, were investigated using a variety of techniques in order to elucidate their gene- sis. In the light of analysis results, the major crust type is hydrogenetic ferromanganese crusts in this area consist of two growth generations: a phosphatised older growth genera- tion that is impregnated with carbonate fluorapatite (CFA) , which the content...

The structural and tectonic features of cobalt-rich ferromanganese crusts and their mineralogical and chemical composion from the MA and MC seamounts, the Magellan Seamounts, were investigated using a variety of techniques in order to elucidate their gene- sis. In the light of analysis results, the major crust type is hydrogenetic ferromanganese crusts in this area consist of two growth generations: a phosphatised older growth genera- tion that is impregnated with carbonate fluorapatite (CFA) , which the content of CaCO_3 is up to 29% , and P_2O_5 is up to 8% , and a lightly or non-phosphatized young growth genera- tion. Results of factor analysis reval that elements in the older crust generation can be par- titions into six major groups with selected elements displaying associations with several groups. these associations are interpreted to represents hydrogenetic (Mn, Co, Fe), rare earth elements (except Ce), carbonate fluorapalite (CaCO_3, P-2O-5), Biogenic (Zn, Cu), thermal fluid genetic (Pb), and debric genetic (Mg) groups. However there are only four major groups in young growth generation, hydrogenetic (Mn, Co, Ni), rare earth elements (except Ce), carbonate fluorapalite (CaCO_3, P_2O_5), biogenic (Zn, Cu) groups. Based on the results of correlation coefficient matrix analysis and correspondence anal- ysis of major elements, combined with the macroscopic and microscopic structure features of the cobalt-rich ferromanganese crusts we concluded that the main oceanics factors for metallogenic of the older growth generation crust layer are the oxidation environments on the slope of seamounts as Antarctic glaciation expanded, Antarctic bottom water current and Pacific circulation action intesified, and an expensation of the oxygen minimum zone which caused by high surface water bioproductivity on equatorial Pacific ocean. As the re- sults of these two actions there is high content CFA impregnated in the older crust genera- tion and time-space differential between CFA and ferromanganese precipitation at the same time. The major oceanics factors of the young crust generation is the oxdation on seabed caused by Antarctic bottom current resulted from the global cooling and oceanic circula- tion.

为探讨富钴结壳中元素的成因,采用了化学容量法、原子吸收、X-射线衍射分析、电子探针、等离子光谱等技术,对太平洋麦哲伦海山区MA海山、MC海山上的富钴结壳分老世代和年青世代层进行了矿物成分与元素成分分析。据分析结果,区内主要赋存水成富钴结壳,富钴结壳中的矿物组分以锰相矿物的水羟锰矿为主,其次为铁相矿物(针铁矿等),还有磷灰石和少量次要矿物(钙十字石、石英等)。老世代富钴结壳,磷酸盐化明显,个别层内CaCO_3高达29%,P_2O_5高达8%。新老壳层间在元素含量上有差异,特别是Fe、Mn、Co和Y等元素含量有明显的差异。据因子分析结果,老世代壳层中的元素有6个成因组合:(1)水成元素(Mn、Co、Fe);(2)稀土元素(Ce除外);(3)磷灰石组分(CaCO_3、P_2O_5);(4)生物成因元素(Zn、Cu);(5)热液成因元素(Pb);(6)碎屑成因组分(MgO)。新世代壳层中,有4个元素成因组合:(1)水成元素(Mn、Co、Ni);(2)稀土元素(Ce除外);(3)磷灰石组分(CaCO_3、P_2O_5);(4)生物成因元素(Zn、Cu)。根据元素相关矩阵分析及主元素对应分析结果,结合富钴结壳的宏观与显微...

为探讨富钴结壳中元素的成因,采用了化学容量法、原子吸收、X-射线衍射分析、电子探针、等离子光谱等技术,对太平洋麦哲伦海山区MA海山、MC海山上的富钴结壳分老世代和年青世代层进行了矿物成分与元素成分分析。据分析结果,区内主要赋存水成富钴结壳,富钴结壳中的矿物组分以锰相矿物的水羟锰矿为主,其次为铁相矿物(针铁矿等),还有磷灰石和少量次要矿物(钙十字石、石英等)。老世代富钴结壳,磷酸盐化明显,个别层内CaCO_3高达29%,P_2O_5高达8%。新老壳层间在元素含量上有差异,特别是Fe、Mn、Co和Y等元素含量有明显的差异。据因子分析结果,老世代壳层中的元素有6个成因组合:(1)水成元素(Mn、Co、Fe);(2)稀土元素(Ce除外);(3)磷灰石组分(CaCO_3、P_2O_5);(4)生物成因元素(Zn、Cu);(5)热液成因元素(Pb);(6)碎屑成因组分(MgO)。新世代壳层中,有4个元素成因组合:(1)水成元素(Mn、Co、Ni);(2)稀土元素(Ce除外);(3)磷灰石组分(CaCO_3、P_2O_5);(4)生物成因元素(Zn、Cu)。根据元素相关矩阵分析及主元素对应分析结果,结合富钴结壳的宏观与显微结构构造特征,认为老世代壳层成矿的主要海洋学因素是因南极冰盖扩大和南极底流与大洋环流作用增强,在海山斜坡形成的氧化作用环境、以及赤道太平洋表层海水高生物生产力引起的最低含氧层扩大作用。这两种作用,造成了老世代富钴结壳层磷酸盐的富集及其与含Fe、Mn矿相形成有时空上的分异。新世代富钴结壳层成矿的主要海洋学因素是南极冰盖发育与大洋环流引起的海底氧化作用。

 
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