There are four columns by the Web's Biological Museum of Zhongshan University : Geological age;
中山大学网上生物博物馆共设四个栏目：地质年代；
The geological age of the present sandstone series is not earlier than the middle-late Pliocene.
因此，含高山栎岩系的地质时代不会早于上新世中晚期。
Lixiviation is chief geochemistry action to control fluorine content undergo very long geological age.
经过漫长地质年代的溶滤作用是控制深层地下水中氟含量的主要地球化学作用。
The result is significant to study the geological age and stratigraphic subdivision in Guanjiagou Formation.
这一结果对研究关家沟组地层对比、时代划分提供了依据。
The primary section of the formation is unfossiliferous. It remains uncertain whether its geological age is Eocene or Oligocene.
本文证实它是西露天组的一部分，是西露天组上部地层的相变，其时代应和西露天组相同。
According to geological age, it may be divided into Upper Triassic coal-bearing formation and Lower-Middle Jurassic clastic rock formation.
根据它的地质时代，划分为上三叠统含煤建造和中下侏罗统碎屑岩建造。
Judging from the stratigraphical sequence and the characteristics of this flora, the geological age of the said coal series is late Pliocene.
从地层层序和植物群的特点上看，该煤组的地质时代为上新世晚期。
Nearly four decades later, our power to alter the environment is considered so profound as to define a new geological age, and even water is not exempt.
四十年后，我们对情形的巨年夜影响力就能使我们可以缔造出一个新的地质时代，即使是水也难逃被人类影响的命运。
The geological age, stratigraphic subdivision and correlation of the "High Resistivity Red Bed" in the Dongpu Depression, Bohai Sea Coastal Basin, has been an unresolved question.
渤海沿岸盆地东濮凹陷内发育的“高阻红”地层的地质时代归属和划分对比问题长期以来一直存在争议。
Zhou Hongwei proposed that the sag pond formed at the geological age in the Chendu Plain continued till the Western, Eastern Jin's and Southern and Northern Dynasties from roughly a.
周宏伟先生近年提出，地质时代在成都平原形成的断陷湖延续到两晋南北朝仍然存在，即汉代“方三百里”、“周回二百余里”的“滇池”，再到两晋南北朝的“万顷池”。
The present unconformity system is resulted from paleoweathering zone undergoing weathering, eluviations and transgression in geological age. The vertical texture existed in the both systems.
现今不整合体系的形成与地质历史时期地层所受的风化、剥蚀和大气水淋滤作用及后期的水进沉积作用关系密切。
Certain features of these engravings lead to the conclusion that they are of great age—geological changes had clearly happened after the designs had been made.
这些雕刻的某些特征让人得出它们年代久远的结论——这些设计完成之后显然有地质变化发生。
While there are a dozen or more mass extinctions in the geological record, the Cretaceous mass extinction has always intrigued paleontologists because it marks the end of the age of the dinosaurs.
虽然在地质记录中有十几次甚至更多的大灭绝，但白垩纪的大灭绝总是引起古生物学家的兴趣，因为它标志着恐龙时代的结束。
The soil contains evidence of the influence of man since the Stone age, bose explains, and this age has already been treated as an independent geological era for a long time.
土壤中含有着石器时代的人影响的证据，波瑟解释说，这一个时期作为一个独立的地质时代来说已经有很长一段时间了。
Rock formations are color-coded and symbols for geological structures are annotated, so age relationships are evident.
用色彩编码岩层，以及用符号标注地质构造，所以年龄关系是明显的。
They are typical geological remains from the Glacial Age.
是典型的冰川期地质遗迹。
Isotopic age has become an important means solving geological problems.
岩石同位素年龄已成为解决地质问题的一个重要手段。
According to the regional geological data, it endows interpretation contents with the corresponding geologic age, and sets up framework of sequence strata.
并参照该区域地质资料，将解译的岩石及岩石组合地层单元内容赋予相应的地质时代，建立地层层序格架。
Obviously, it is very difficult to determine the initial age of subduction by using the isotopic age of only one geological event.
显然，如果只想使用任何一种地质事件的年龄来确定碰撞作用的初始作用时间都是很困难的。
This paper deals with three factors, i. e. topographic unit, stratigraphic age, and strata association as the most important elements for controlling the soil engineering geological conditions.
本文以地貌单元、地层时代和地层组合作为控制土体工程地质条件的基本要素，并从八个方面实例论证了这三大要素对各类土体工程地质条件的宏观控制作用。
Combined with regional geological data, the deformation age and the relationship with the other fracture zones have been discussed.
结合区域资料，讨论了断裂的形成时代及与邻区的关系。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur iso - topic dat...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur iso - top...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur is...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
An approach has been made to the ore genesis from the ore composition, the typical mineral assemblage, the mineral geological thermometer, the K-Ar isotopic age, the sulfur is...
并从矿石物质成分、典型矿物组合、同位素组成、稀土元素丰度型式，以及矿化分布和相关分析等方面、探讨了成岩成矿的物质来源及成因问题。
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