地质历史时期

古海洋的Sr同位素组成变化则是地壳和地幔演化以及不同地质历史时期壳－幔相互作用的共同结果。

The variation of Sr isotope in paleo-ocean is regarded as the result of the evolution of crust and mantle and of the crust-mantle interaction in different geological times .

地质历史时期海平面变化曲线的数学模型

Mathematical model of sea-level change curves in geological history

无论是平均生存年龄还是平均自然年龄，相对于地质历史时期都很短暂。

Whatever age is short relative to geologic era .

地质历史时期碳循环的研究

Study of carbon cycle during geological history

在地质历史时期新疆古气候特征

Paleoclimate Characteristics in Xinjiang in Geologic Time

此模式与其它地质历史时期生物礁的成礁模式明显不同。

This model is different from that of the other organic reefs in the geological history .

火山岩带形成于漫长的地质历史时期，主要有元古代、石炭纪、二叠纪和三叠纪火山岩。

Formed in very long geological history , they mainly include Proterozoic , Carboniferous , Permian and Triassic volcanic rocks .

在全球范围内探讨地质历史时期地幔流体的组成、性质、运移及演化规律；

The composition , property and evolutionary of mantle fluid dealt with that in the global extent during geological time ;

为了确定地球形状的变化需要了解各个地质历史时期其扁率的变化。

The change of oblateness in individual geological periods is needed to determine the change of the earth 's shape .

银矿是在一定的地质历史时期以及特定的地质环境中，受到一些重要的地质事件影响而形成的。

Silver deposits are formed by suffering some important geological events in a certain geological history period and special geological environment .

生态地层学是利用再造古生物群落来分析地层，恢复地质历史时期自然环境的真实面貌，探索其演变规律的学科。

Ecostratigraphy is using the way of reconstructing palaeocommunite to analyse stratum , to recover the real feature in geology history .

在整个地质历史时期，力始终作用于地壳之中，地壳岩石对这些力的反应就是褶皱和断裂。

Forces in the earth 's crust have been active throughout geological time . Rocks respond to these forces by folding and faulting .

化石植物既是研究地质历史时期植被演替的直接证据，又是研究古海拔变化的珍贵材料。

Fossil plants are considered as direct evidence for vegetation succession in the geological period and invaluable materials for the prediction of palaeoelevation .

要认识和重建某个地质历史时期盆地的原始构造格局和沉积特征，就必须除去后期叠加的构造层和构造变形，即反序构造分析法。

Then use antitone structural analysis method to recognize and reconstruct the primary tectonic structure and sedimentary feature of a basin in certain geological history .

浅部地下水主要由现代区内降水补给形成，而深部地下水则可能由地质历史时期降水补给形成。

The shallow groundwater is mainly recharged by modern and local precipitation , and the deep groundwater might be originated from infiltration recharge of ancient precipitation .

深层承压水主要形成于地质历史时期区域性补给，与现代水循环有联系；

Confined groundwater mainly originates by recharge of regional meteoric water and river water in the geological history , which has relation with modern water circulation .

由此，中扬子及邻区在地质历史时期经历了4种不同性质的原型盆地，具有幕式充填特征。

Therefore , the middle Yangtze and its adjacent region have experienced in geological history four types of prototype basins with the characteristics of episodic sedimentation .

可以近似地把地质历史时期的碳循环看做为在沉积碳酸盐和沉积有机碳化学库之间的平衡。

Carbon cycle , to a first approximation , can be considered a balance between the carbon in the sedimentary carbonate reservoir and the organic matter reservoir .

地球是个固液混合的椭球体，在各个地质历史时期中地球扁率的真实值应该小于计算的扁率值。

The earth is a ellipsoid consisted of both solid and liquid , so the true value in each geological time should be less than the calculated oblateness .

岩体是在地质历史时期形成的具有一定组分和结构的地质体。

Rock mass is defined as a geological body with particular composition and structure . It was formed in long geologic period and hosted in a certain geological environment .

对凝缩段的识别不仅是认识层序结构的关键，而且对分析地质历史时期全球相对海平面变化至关重要。

Identification of condensed section is not only the key to understanding of sequence structure , but also critical to analysis of global relative sea level changes during geologic history .

研究地质历史时期的环境变迁，尤其第四纪以来的气候旋回，可以为预测未来全球变化提供一个方法和参照。

Studying the environment changes in geology history period can provide a method and reference to forecast the whole world change , especially the climate cycle from the Quaternary period .

古岩溶为地质历史时期而非现代营力环境下形成的岩溶，深岩溶为不受地表侵蚀基准面控制环境条件下的深埋藏岩溶作用。

Palaeo-karst was formed under an ancient stress condition in geological history , and deep karst was formed in a deep buried condition not controlled by the base level of erosion .

在地球演化的漫长地质历史时期，由于内外动力的地质作用，形成、发展并遗留下来的珍贵的、不可再生的地质自然遗产。

During the long geological historical period of earth evolution , with the geological function of internal and external power , the precious and non-renewable geological natural heritage was formed and developed .

在储层古流体研究中，根据多口井的泥岩压实曲线恢复了地质历史时期的流体压力和流体势；

Based research on mudstone compaction curves , the fluid pressures and fluid potentials during geological periods in deepest burial are restored , so as to study on ancient fluid of reservoir bed .

米兰柯维奇旋回在地质历史时期具有相对的稳定性，其在地层中的记录可以作为一座精确的“沉积物钟”和辅助的测龄工具。

The Milankovitch cycle , whose records in strata can be considered both as an accurate " sediment clock " and as an auxiliary dating tool , is relatively stable in the geologic history .

由于油气的运聚与成藏作用都是发生于地质历史时期的特定历史事件，要准确分析流体运移特征，就必须首先了解古水动力的演化历史。

Before the characteristics of fluid migration and accumulation being studied , evolution history of paleo-hydrodynamics must be restored first of all , because of being as specific history events set in geologically history periods .

通过分析研究区地质历史时期内的流体运动规律，了解油气运移、聚集及随后的再运移、再聚集，最后评价出油气的有利聚集区及其聚集特征。

Analyzing the fluid flow rules in researched region in geologic time , the migration , accumulation , remigration and reaccumulation of hydrocarbon are realized , evaluating the favourable accumulation zones and its characteristics finally .

作为地质历史时期的一个横截面，地史最新的一页，全新世环境演变在全球变化研究中具有以今推古和将古论今的纽带作用。

As a cross-section and the latest chapter of the geological history , the environment evolvement of Holocene plays a role of the connecting link between the preceding and the following in the research of global change .

研究表明：煤基块弹性能受控于煤体自身的岩石力学性质，与地质历史时期的煤储层埋藏深度、煤级演化程度密切相关。

The results show that coal matrix flexibility energy was controlled by rock mechanical properties of coal , and was correlative nearly with the buried deepness of coal reservoir and the evolvement degree of coal rank in different geological phases .