chert

1. The cardium sandstone is lithic, being composed of grains of chert, quartz, quartzite, silicified argillite, and other rock fragments.
   卡迪砂岩是岩屑砂岩，由燧石，石英、石英岩、硅化泥板岩和其它岩石碎屑颗粒所组成。
2. The host rock conformably overlies a band of siliceous chert breccia.
   含矿主岩整合地上覆于硅质燧石角砾石带之上。
3. Thus we can better understand the deformation of chert in a highly fluid form.
   这样我们就能更好地理解燧石在高度流体状态时的变形情况。
4. The sedimentary environment of the chert reflects the tectonic setting of the small oceanic basin in Late Jurassic.
   硅质岩的形成环境反映了该陆缘小洋盆在晚侏罗世所处的构造背景。
5. There exists abundant Radiolaria in the chert, and the radiolarian association suggests that the chert was formed in the last period of Late Jurassic.
   硅质岩中含有大量放射虫，放射虫组合显示硅质岩的沉积时代为晚侏罗世晚期。
6. Origins and environment types of chert in Western Zhejiang and southern Anhui from late Sinian to Early Cambrian
   皖南浙西晚震旦世至早寒武世硅岩物源与环境类型初探
7. In Motuosarla Fe and Mn deposit, the chert mainly distributes in iron ore bed, some on its top and at its bottom, with a relatively stable thickness.
   莫托萨拉铁锰矿中硅质岩多分布于铁矿层中，部分分布于铁矿层顶底部位，厚度较稳定。
8. Radiolarian fossils from chert gravels of Triassic conglomerate in NW margin of the Tarim Basin and their geological significance
   塔里木盆地西北缘三叠系硅岩砾石中的放射虫化石及其地质意义
9. A variety of chert containing magnetite and hematite; mined as a low-grade iron ore.
   一种含磁铁矿和赤铁矿的燧石，作为一种低等的铁矿石被开采。
10. Carbonate rocks are predominantly composed of intra-clastic dolostone, chert dolostone and sand-bearing dolostone.
    亚长石质岩屑砂屑岩碳酸盐岩以内碎屑白云岩、燧石白云儿和含砂白云岩为主。
11. Permian Radiolarians, Chert and Basalt from the Nan Suture Zone, Northern Thailand
    泰国北部难河构造带二叠纪放射虫、硅质岩和玄武岩
12. The thin-beded siliceous-rocks include chert and depositional quartz with textures of oolite and pebble.
    矽质岩包括燧石和沈积石英岩，呈薄层状产出，沈积石英岩具鲕状、砾状结构。
13. If chert does not contain impurities and the age spectrum is very precise, the minimum apparent age in middle temperature may have geochronological implication.
    当燧石纯度很高，加热阶段划分得很细时，马鞍形谱线中温区间最小视年龄具有某种年代学意义。
14. The chert sequences in southeastern Yunnan as well as western and southern Guangxi indicate some branch marine basins of the Palaeo-Tethys.
    滇东南、桂西和桂南的矽质岩则指示古特提斯多岛洋的分支海盆。
15. Molecular paleontology in thermal chert in Laerma gold deposit shows that the organic precursors intimately associated with gold are marine bacteria and algae.
    通过对拉尔玛金矿热水成因硅质岩中分子古生物学的研究，指出硅质岩中与金关系密切的生物母源为海生低等菌藻生物。
16. Microscopic studies of the kerogen from the chert samples show that the main components of the kerogen are organic fragments and microsome with weak anisotropy.
    油浸显微镜下鉴定硅岩中的干酪根组成多为有机质碎片和微粒体，并显示微弱的各向异性。
17. Exploring organic origin of Precambrian bedded chert in relation to hydrocarbon generation
    试论前寒武系层状燧石岩的有机成因及其与油气生成的关系
18. Mineralogy research about Qixia chert indicates that the alkali reactivity of chert is related not only to the crystal structure of α-quartz but also to the construction of its mineral assemblage.
    对南京二叠系栖霞阶灰岩中的矿物学研究表明，该燧石的碱活性不仅取决于α石英的晶体结构，而且还与燧石的矿物集合体构造有关。
19. A New Type of Primary Unicellular Microfossils from the Chert of the Gaoyuzhuang Formation in Jixian County, Tianjin
    蓟县高于庄组燧石中原位保存的单细胞微体化石新类型
20. Origin and Diagenesis Marking of Chert in Limestone of Taiyuan Group, Jiaozuo, Henan Province
    河南焦作地区太原群灰岩中燧石的成因及成岩作用标志
21. The uranium deposit of Silurian age in a certain area is controlled mainly by fracture and morphologically changing parts of uranium bearing siliceous limestone and chert beds.
    某地区志留系中的铀矿床，主要受硅灰岩和硅岩含矿层形态变异部位和断裂构造控制。
22. The non-reactive feature of Qixia chert result from its asphalt content, which restrictes the alkali-aggregate reaction.
    这种燧石非活性特征是由于其含有沥青质之故，沥青质的存在抑制了碱-集料反应的进行。
23. Chert with good abrasion is the major content in conglomerate, and diamonds are contained in it generally.
    砾岩主要砾石成分为燧石，磨圆度较好，普遍含金刚石。
24. Biogeochemical model and Simulation on the effect of Precambrian algae in the forming process of certain laminated chert
    前寒武纪藻类对某些层纹状燧石形成作用的生物地球化学模式和模拟实验研究
25. Element Geochemistry and Depositional Setting of the Chert in Devonian, Nanning Area, Guangxi
    广西南宁地区泥盆系硅质岩地球化学特征及沉积环境
26. The geomorphological characteristics and forming period of diamond& bearing chert conglomerate in central southern region of Shandong
    山东中南部地区含金刚石燧石砾岩的地貌特征和形成时代
27. This study use the microcosmic methods to analyze the micro-fabrics of the Mesozoic and Neozoic chert formations and the Modern sinters in southern Tibet, try to reveal their geological information.
    本研究运用微区、微束的方法，分析藏南地区中新生代硅质岩和现代硅华的微组构特征，并试图揭示它们所包含的地质信息。
28. Hydrothermal fluid enriched in SiO2 went into sea floor and permeated into the marine sediments, which deposited as chert nodules or bands in diagenesis.
    富含SiO2的热液进入海底，混迹于沉积物中，成岩过程中发生分异形成燧石结核或燧石条带。

noun

1. variety of silica containing microcrystalline quartz