查询词典 Proterozoic

The ductile extension shearing between rock layers is the main structure action, which causes the plastic fludization and mylonization of rocks during the later period of late proterozoic era, and the brittle-ductile extension shearing is the main cause to form the breccias and quartz veins during Yenshan movement.

首次提出了金山韧性剪切带伸展—逆冲—伸展剪切的多阶段发展演化模式。晚元古代晚期的顺层韧性伸展剪切是形成金山地区岩石塑性流变和强烈糜棱岩化的主要构造作用，燕山运动期迭加的脆—韧性伸展剪切是形成该地区碎裂岩和石英脉的主要构造作用

Similar to global cratons, numerous Paleo-proterozoic mafic dyke swarms occur in the North China Craton.

华北克拉通同世界上其它克拉通一样，广泛发育前寒武纪基性岩墙群。

The exploration precision of petroleum system with the source rock as Tertiary should be improved,and also more attentions must be paid to the otherpetroleum system with the source rock as Mesozoic,Paleozoic and Mid-Upper Proterozoic.

以第三系为烃源岩的含油气层系的勘探精度仍有待于进一步提高，同时必须将以古生界、中生界和中上元古界为烃源岩的含油气层系作为今后挖潜的重要领域。

The model showed that a partial pressure of only 2.9 millibars of CO2 would have been needed during the late Archaean and early Proterozoic periods in order to bring the surface temperature of the Earth above freezing.

模拟显示：在太古代末期和原生代初期，要想使地球表面温度升高到凝点以上，只需要二氧化碳的局部压力达到2.9毫巴。

Millibars of CO2 would have been needed during the late Archaean and early Proterozoic periods in order to bring the su rface temperature of the Earth above freezing.

模拟显示：在太古代末期和原生代初期，要想使地球表面温度升高到凝点以上，只需要二氧化碳的局部压力达到2。 9毫巴。

The fact that molar tooth carbonates were concentrated in the period of Mid-and Neo-Proterozoic may reflect the only combination of favorable physical, chemical and biological conditions in the entire geological history.

臼齿碳酸盐岩在中新元古代集中发育的事实可能反映了有利的物理、化学和生物条件在地质历史上的唯一结合。

Numerous iron spherules have been found from coarse sandstone in the bottom of the Changzhougou Formation (1.8Ga) and silicified carbonate rock of the Dahongyu Formation (1.6Ga) of Proterozoic strata of the Ming Tombs District, Beijing.

北京十三陵中元古代常州沟组底部的粗砂岩(l.8Ga)和大红峪组硅化碳酸盐岩(1.6Ga)中都发现了众多铁质宇宙球粒。

Tourmaline rock s widely occur within the pyrite deposits of the Proterozoic rift in the eastern part of Liaoning province, particularly in the pyritized sequences of the Gaojiayu formation of the Liaohe group.

电气石岩在辽东元古宙裂谷内的硫铁矿床中广泛发育，辽河群高家峪含矿建造中，富电气石岩主要与硫铁矿体成矿关系密切。

Super large type sedimentary hydrothermal sulfide ore deposits, located in middle Qinling and west Yinshan mountains, has shown the multi metal and pyrite type deposit The deposits are shown sililay geo geochemistry characteristics to SEDEX sulfide deposits in middle Proterozoic and Paleeozoic Era in the world, i e , ore forming age were 1 4～1 2 Ga and 0 4～0 3 Ga ore bodies show more than 1 000 m long and multi layered distribution, the ore of sulfide rich show massive band...

地质地球化学特征与世界中元古界和古生界中的SEDEX 硫化物矿床基本相同：成矿时代为1－4 ～1－2 Ga 和0－4 ～0－3 Ga，均产于克拉通边缘盆地中；矿体延长达千米以上，具多层性特征；富硫化物矿石为块状条带状，矿物组合简单，有显著分带性；硫同位素组成为海相硫酸盐型，铅同位素为混合程度较高的均匀性铅等。

The gold ore deposits and prospects occur within the nearly NW-striking faults in the carbonate rocks of the cover of the Yangtze block,Proterozoic metamorphosed quartz diorite of basement of Yangtze block and Mesozoic quartz porphyry in western Shimian, Sichuan Province.

四川石棉西部地区金矿床和矿点分布在扬子地块盖层碳酸盐岩和基底元古宙变质闪长岩以及中生代石英斑岩中的北北西和北北东走向断裂中。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。