ordovician造句

The third period of the Paleozoic era, the Silurian follows the Ordovician period and precedes the Devonian.
志留纪是古生代的第三纪，继奥陶纪之后，在泥盆纪之前。

SOME UPPER ORDOVICIAN GRAPTOLITES FROM SOUTHERN ANHUI WITH COMMENTS ON THE GENUS AMPLEXOGRAPTUS ELLES ET WOOD
安徽南部上奥陶统的笔石并论围笔石属

A study on validity identification of source rock by new experimental techniques for Ordovician in Ordos basin
鄂尔多斯盆地奥陶系烃源岩有效性判识

Hydrocarbon generation capacity of marine carbonatite of the middle Ordovician on the south slope of Huimin sag
惠民凹陷南坡中奥陶统海相碳酸盐岩生烃能力讨论

POSSIBLE INFLUENCES OF TAPHONOMIC FACTORS ON SHAPE AND ORNAMENTATION OF FOSSIL ACRITARCHS FROM EARLY ORDOVICIAN
早奥陶世疑源类埋藏后的形体及纹饰变化

The lithology of karst is pure carbonatite at geological age of intermediate Cambrian and intermediate Ordovician.
北方岩溶和岩溶水的开发利用，见于碑刻者亦可追溯至1000年前。

ON FORMING CONDITION OF RELIEVED GRAPTOLITES FROM ORDOVICIAN IN SOUTHERN ANHUI, NORTHEASTERN AND NORTHWESTERN JIANGXI
皖南，赣北奥陶纪笔石立体标本形成环境的初步研究

The Lower Ordovician organic reefs were first identified in Huanghuachang of the eastern Yangtze Gorge by the authors.
首次发现峡东下奥陶统生物礁。

Relative strata impermeability in Ordovician top and risk assessment of water inrush from coal floor in Xinyi coalfield
新驿煤田奥灰顶部相对隔水性及底板突水危险性评价

Discovery of Dickite and Its Significance in Weathering Crust of Lower Ordovician, Southwest Depression in Tarim Basin.
塔西南坳陷下奥陶统风化壳中地开石的发现及其意义

CHARACTERISTICS AND ORIGIN OF DOLOSTONES IN YINGSHAN FORMATION, LOWER AND MIDDLE ORDOVICIAN, NORTH OF CENTRAL TARIM BASIN
塔中北部中下奥陶统鹰山组白云岩特征及成因

Discovery of the early and Middle Ordovician strata on the northern slope of the Karakorum Mountains and their significance
喀喇昆仑山北坡早、中奥陶世地层的发现

The mining of No15 coal in Dongshan Colliery is mainly threatened by karst water among Ordovician lime rock in basal plates.
东山煤矿15号煤开采主要受底板奥灰岩溶水威胁。

A Study on the Characteristics of Ordovician Source Rocks and Reservoirs and Cap Rocks on the West Margin of the Ordos Basin
鄂尔多斯西缘奥陶系烃源岩及储盖层特征研究

The Developmental Characters of Sedimentary Environments and Lithofacies of Middle Ordovician Majiagou Formation in Ordos Basin
鄂尔多斯盆地中奥陶统马家沟组沉积环境与岩相发育特征

GEOLOGICAL FEATURES, EXPLORATION METHOD AND DEVELOPMENT PROSPECTS OF THE ORDOVICIAN SALT FIELDS IN THE NORTHERN SHAANXI PROVINCE
陕北奥陶纪盐田地质特征勘查方法及开发前景

PALAEOENVIRONMENTAL ANALYSES OF ORDOVICIAN ROCKS IN THE NORTHERN UPLIFT OF TARIM BASIN IN TERMS OF CALCAREOUS ALGAE AND CYANOBACTERIA
从塔北隆起奥陶纪钙藻化石探讨奥陶纪的古环境

Discovery of middle Ordovician graptolite beds regarded as Cambrian near Gongcheng, north of Guangxi is first be reported and discussed.
首次报道和讨论了桂北恭城中奥陶世笔石地层。

Consequently, predicting distribution areas of Ordovician limestone karst flow for the evidences of finding water with hydrological drill.
从而预测奥灰岩溶水的分布范围，为水文钻探找水提供依据。

Distributive configuration of ancient Valley trough on Ordovician erosion surface in Changqing gas field and its control over gas accumulations
长庆气田奥陶系古沟槽展布及其对气藏的控制

Distinguishing and Analysis for Ancient Crust of Weathering between Ordovician and Upper Jurassic Nearby Kazuo, over the limestone of middle Ordovician, there's an ancient crust of weathering.
中奥陶系与上侏罗系间古风化壳的判别与分析