It is useful in discussing the nature of sedimentary deposits.
它在讨论沉积物的性质时是有用的。
Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.
树木的年轮和季节性沉积被称为年变层，可计算用于确定绝对年龄。
Haidian in Beijing, is not only famous by technology and education, but also has sedimentary deposits of culture and arts.
北京市海淀区不仅以科技、教育著称，文化艺术积淀也非常深厚。
The site elevation was created by raising it with reclaimed fill, which overlies sedimentary deposits common to the north coastline of Hangzhou Bay.
现场经过回填标高提升，地基土质为杭州湾北海岸常见的沉积层。
From data sent back to Earth, scientists know that the rover landed on several hundred metres of sedimentary deposits that must have formed in ancient lakes.
从传回地球的数据分析，科学家们了解到漫游者降落在一个几百米深的沉积堆上，而这个沉积堆一定是在一个古老的湖泊中形成的。
It was previously considered that all of the Pb-Zn deposits in the Xicheng orefield belong to Devonian hydrothermal-sedimentary deposits or their reworked ones.
以往资料认为西成矿田的铅锌矿床均属泥盆纪热水—喷流沉积或它们的改造型矿床。
In this paper the genesis and formation periods of the placers (littoral, glacial and alluvial) and biogenic-biochemical sedimentary deposits are briefly discussed.
概述了滨海砂矿、冰川砂矿、冲积砂矿和生物、化学沉积矿产的成因及成矿期。
The data of sedimentary layers from the Quaternary down to the Cambrian are collected, and then the distributions of total thickness and apparent density of sedimentary deposits are presented.
本文搜集整理了由第四系到寒武系的沉积层资料，给出了沉积层总厚度和视密度的分布。
Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the sixth period of the Paleozoic Era, characterized by the development of coal-bearing rock formations.
盆地周围为前震旦纪变质岩系及古生代灰岩、页岩组成的高丘、低山。
Although most fossils are found in marine sedimentary rocks, they also are found in terrestrial deposits left by streams and lakes.
虽然大多数化石是在海洋沉积岩中发现的，但它们也存在于河流和湖泊所留下的陆地沉积物中。
Sedimentary-type vanadium deposits in Hunan are mainly distributed in Wulinshan, Leifengshan and Longshan area.
湖南沉积型钒矿床主要分布于武陵山区、雪峰山区和湘中龙山地区等。
The Late Carboniferous prototype sedimentary basin is likely to be a hinterland basin, which is favourable for preservation of large gypsum-siderite deposits.
晚石炭世原型沉积盆地可能为后陆盆地，有利于大型石膏菱铁矿矿床保存。
With indicating significance of geochemical characteristics of Sr isotope in sedimentary environment, characteristics of Sr isotope in Eogene saline deposits in Dongpu depression have been studied.
利用锶同位素地球化学行为、地球化学特征及这些特征在沉积环境方面的指示意义，分析了东濮凹陷下第三系盐湖沉积的锶同位素特征。
The copper-cobalt deposits hosted in the sedimentary sandstone and the cobalt-bearing magmatic Cu-Ni sulphide deposits are two kinds of the most important cobalt deposits.
沉积型砂岩容矿的铜钴矿床和含钴的岩浆岩型硫化铜镍矿床是两个最重要的钴矿床类型。
On the basis of the properties, textures and primary structure of deposits, 21 sedimentary microfacies types are distinguished in the alluvial fan of the Sandu red basin.
根据沉积物的性质、结构及原生沉积构造，将三都红盆冲积扇体划分为21种沉积微相类型。
In most cases, stratabound gold and polymetallic deposits occur in the trough-type Devonian, while sedimentary mineral deposits mainly occur in the platform-type Devonian.
海槽型泥盆系多产出层控型金和多金属矿床，台地型则以沉积矿床为主。
It is also not suitable for the deposits formed in sedimentary environments such as firths, tidal zones and fluvial deltas.
在河口湾、潮间带和河流三角洲前缘环境中形成的沉积体也不适合进行构型单元分析。
This paper presents an achievement about a study of metamorphosed sedimentary iron deposits using Landsat-3 MSS CCT in the north of Shanxi province.
本文叙述了作者用美国陆地卫星3号的数字磁带研究山西北部沉积变质铁矿资源的成果。
The metallogenetic models of normal sedimentary iron ore deposits which have been used in many textbooks are questionable.
国内外一些文章和教科书上的沉积铁矿床的成矿模式是值得商榷的。
The conclusion is that the sedimentary environment of coal measures in Changyang area, Shuangyang basin is mainly fan delta and limnetic deposits.
得出的结论是：双阳盆地长岭区煤系地层沉积环境主要为扇三角洲沉积和湖泊沼泽沉积。
The Shishan and Fengshan deposits, two main ore deposits in the Yimen copper ore district, were long considered to be of terrigenous metamorphosed sedimentary origin.
长期以来，云南易门铜矿区中的狮山和凤山铜矿床被认为是陆源沉积变质成因。
Most stratabound lead and zinc deposits occurs in carbonates, in semi-closed sedimentary basin. They are of syngenetic origin.
本文主要介绍大多数层控铅锌矿床是产在半封闭沉积盆地碳酸盐岩中，属同生沉积成因。
Anshan Xiaolingzi iron ore belongs to the sedimentary metamorphic iron deposits with characteristics of fine iron minerals and low magnetic rate, and it is a refractory iron ore.
鞍山小岭子铁矿系沉积变质矿床，铁矿物嵌布粒度细，磁性率低，属较难选铁矿。
In the carbonate rock area, there are some sedimentary -transformation Pb-Zn deposits.
在碳酸盐岩地区广泛分布着一些沉积—改造铅锌矿床。
The general sedimentary characteristics indicate that shore-shallow lacustrine deposits are the main types, while flood plain, delta and fan delta occurred mainly along the basin margin.
沉积相总体特征以滨浅湖沉积为主，而在研究区周缘则多发育河流泛滥平原、三角洲和扇三角洲沉积。
Zhijin Xinhua phosphate deposits is an important Marine sedimentary phosphate deposits formed in Early Cambrian Epoch located in South-west edge of Yangtze Platform.
织金新华磷矿是我国扬子地台西南缘早寒武世重要的海相沉积磷矿床。
Zhijin Xinhua phosphate deposits is an important Marine sedimentary phosphate deposits formed in Early Cambrian Epoch located in South-west edge of Yangtze Platform.
织金新华磷矿是我国扬子地台西南缘早寒武世重要的海相沉积磷矿床。
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