成岩作用

It shows that the reservoir rock consists of silty and fine-grained arkose, and has low compositional maturity and medium textural maturity. The clastic rocks experienced a series of complex diagenesis as compaction, cementation, pressure solution and dissolution.

结果表明，该储集岩为粉细-细粒岩屑质长石砂岩，成分成熟度普遍较低，结构成熟度中等-较好；储层岩石经历了压实、胶结、压溶和溶解等一系列成岩作用，具有低孔低渗的特点。

Objective To observe the effect of calcium hydroxide glycerin paste on dissolution of smear layer inside the root canals.

认为这一地区重要的成岩作用类型有压实作用、胶结作用及溶解作用。11。目的观察氢氧化钙甘油糊剂对根管壁玷污层的溶解作用。

Plentiful oil and gas reservoir in the Tertiary clastic rocks in north edge of Chaidamu Basin.

柴达木盆地北缘第三系有丰富的油气储集，主要存在于碎屑岩中，油气的储集明显与碎屑岩的沉积环境和成岩作用有关。

These data are incompatible with the excursion scenario unless (1) carbonates deposited during a negative δ13C excursion are more susceptible to later δ18O metamorphic alteration in proportion to their negative δ13C value, or (2)δ18O of sea water decreases as δ13C of sea water decreases to produce an array that fortuitously resembles the Cenozoic lithification domain Fig.

这些数据与想象的同位素漂移情况不一致，有两个因素应当考虑在内。1。碳酸盐在δ13C存在负值漂移时沉积更加容易受到后期δ18O变质交代作用的影响，这种影响与δ13C成比例。2。海水δ18O与δ13C的同步减少使得数据出现在图表上的近似新生代成岩作用区域，这种情况属于偶然情况。

The diageneses include compaction, cementation, metasomatism and dissolution, etc.

成岩作用包括压实作用、胶结作用、交代作用、溶解作用等。

On the other hand, Cu, Co and Ni are all present in manganese phase in the hydrogenic nodules.

这些过渡金属元素在成岩作用形成的结核中的存在与铁锰结核中锰矿物和铁的氧化物、氢氧化物的晶体化学特征密切相关，而在水成作用形成的铁锰结核中的富集与锰矿物和铁的氧化物、氢氧化物的晶体化学特征关系不大。

Based on lots of achievements of predecessors, directed by reservoir sedimentology, high-resolution sequence stratigraphy and petroleum geology, taking full advantage of loggin, core and thin section data from different wells, this paper has taken detailed study on the Upper Paleozoic strata in Tabamiao area.

本论文在众多前人研究成果的基础上，以储层沉积学，及高分辨率层序地层学、石油地质学等理论为指导，充分利用测井、钻井岩芯、薄片鉴定等资料，针对塔巴庙地区上古生界沉积相及沉积微相类型与展布，高分辨率层序地层特征与层序—岩相古地理演化，成岩作用类型与序列，孔隙类型与特征，以及储层物性特征与分布规律等方面展开了系统深入研究，最后对有利区带进行了预测。

Diagenesis types include compaction,cementation, solution and metasomasis.

成岩作用类型主要包括压实作用、胶结作用、溶解作用和交代作用，其中胶结作用使储层原生孔隙迅速变差，而溶解作用是次生空隙发育的主要因素。

The beach body of Lower Triassic Feixianguan Formation in northwestern Sichuan can be divided into platform marginal oolitic beach and intraplatform point beach. The water is relatively deeper at the forming of most of platform marginal oolitic beach which is not transformed by the diagenesis of fresh water and mixed water and has poor reservoir properties. However, a part of oolitic beach formed under shallow water environment, and it is transformed by the diagenesis of fresh water and mixed water and well dolomitized, which can form excellent reservoir.

川西北下三叠统飞仙关组滩体分为台地边缘鲕粒滩和台地内点滩2种类型，多数台地边缘鲕粒滩形成时水体相对较深，未经大气淡水和混合水的成岩改造，储集性能较差，局部鲕粒滩形成时水体较浅，在经过大气淡水和混合水的成岩作用改造后，白云石化好，可形成储集性能极好的储集体；台地内点滩白云石化较好，储集性能也较好，但分布狭窄，厚度较薄，无规律可寻。

Nationwide sampling program is designed according to the resources distribution and coal-forming periods as well as coal rank and yield of coal in China, 305 coal samples were collected and determined by catalytic spectrophotometry combined with pyrohydrolysis.The geochemical mechanism of the concentration or depletion of iodine was discussed during the process of coalification,which including peat diagenesis and coal metamorphism.The contents of iodine in Chinese coals fall in the range of 0.04-39.51 mg/kg.

根据中国煤炭资源分布和成煤时代，兼顾煤的变质程度和煤炭产量分布，在全国范围内采集了305个煤样，采用高温热水解—催化分光光度法分析了煤中碘的含量，探讨了煤化作用(包括泥炭成岩作用和煤变质作用)过程中煤中碘富集或亏损的地球化学机制。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。