查询词典 chert

He drew up a geological map containing all information he could gain during his field investigations, such as outcrops of limestone and of cherty material ("chert formation"), overburden, dip and strike of strata, etc.

该地质学家绘制了一份地质图，图中包含其在实地考察期间收集的所有信息，例如石灰石和石英质的突岩层、覆岩层、地层倾向和走向等。

This conclusion is supported by:(1) typical red color, whatever it is shale, marlstone, chert, and or limestone, with their matrix rich in patches of Fe oxide.

通过沉积学、古生物学、沉积地球化学等研究表明，藏南上白垩统海相红层床得组为底层水高度氧化的沉积环境。

In a pelagic chert section at Dachongling of Xiaodong town in the Qinzhou area of southeast Guangxi, we found stratigraphically continuous condont fossils, and divided them into two conodont zones, namely, Jinogondolella granti zone and Clarkina dukouensis zone, in ascending order.

在广西钦州地区小董镇大虫岭深海硅质岩剖面中，首次处理出了层序连续的牙形石化石，并由老至新划分了二个牙形石带，即Jinogondolella granti带和Clarkina ducouensis带。

The Rhynie Chert has been radiometrically dated at 396 Ma. Plants remains show excellent cellular preservation. Three groups of plants are represented: the Rhyniophytes, the Zosterphyllophytes and a lycopod.

莱尼碎石的同位素顶年结果为 3.96亿年，其中化石植物保存有精美的细胞结构，主要的植物代表类群有莱尼蕨类，工蕨类和石松类。

The investigation indicates that the Shalagang antimony has osculatingrelationship with the Structure but has no selectivity with the host rock: The ore bodyis controlled by the fault zone, which insert into it as a nervation;The host rockincludes chert, carbonaceous slaty rock, altered diorite , altered diabase and so on. Theore-forming epoch of Shalagang antimony is obviously later than era of the host rock,so it is concluded that the Shalagang antimony maybe formed in the late Himalayan.

研究表明，沙拉岗锑矿床与构造关系密切，而对容矿岩石类型无选择性：矿体主要受控于断裂及层间破碎带；主要容矿岩石有硅质岩、碳质板岩、强蚀变中基性火山岩和蚀变辉绿岩等，并以硅质岩为主；矿床成矿时代明显滞后于容矿岩石时代，据此推断沙拉岗锑矿床可能形成于喜山晚期。

It resembles the psilophyte Rhynia from the Rhynie chert of the Devonian period.

库克逊蕨属有无叶的纤细二叉分支状的茎，成熟孢子囊和孢子充分角质化，该植物与在泥盆纪 Rhynie 燧石中找到的裸蕨中的羊角蕨属很相像。

Sedimentary lithologies include chert, siliceous mudstone, tuffaceous fine-clastic rock, and micritic limestone.

这些地层的岩性包括硅质岩、硅质泥岩、凝灰质细碎屑岩和泥晶灰岩等。

Diamond bits require lower WOB,high rotary speed and small flow rate,useful for hole straightening and inclining prevention,and it can be used high-density drilling fluids.But diamond bits can′t effectively drill heterogeneous hard formations which contain chert,pyrite and silicastone.

金刚石钻头的钻压小、转速高、排量小，有利于纠斜防斜，可在高密度钻井液条件下使用，但它不能有效地钻进含燧石、黄铁矿和硅质的不均质坚硬地层。

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。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新