1)failed rift古裂谷
英文短句/例句
1.PRELIMINARY COMPARISON BETWEEN ANCIENT YISHU RIFT-VALLEY AND RIO GRANDE RIFT--VALLEY沂沭古裂谷与里奥格兰德裂谷的初步比较
2.THE RIFF WAVY-STRUCTURAL EVOLUTION OF THE ZHONGTIAOSHAN MOUNTAINS AREA IN THE LATE ARCHEOZOIC ERA-EARLY PROTEROZOIC ERA中条山晚太古—早元古裂谷波浪状构造演化
3.Mid-Neoproterozoic Rift-related Volcanic Rocks in South China:Geological Records of Rifting and Break-up of the Supercontinent Rodinia华南新元古代中期裂谷火山岩系:Rodinia超大陆裂谷化-裂解的地质纪录
4.On Ore-controlling of Contemporaneou fault of the Late Paleozoic Rifts in Xinjiang新疆晚古生代裂谷中同生断裂的控矿问题
5.a republic in eastern Africa; major archeological discoveries have been made in the Great Rift Valley in Kenya.非洲东部一个共和国；肯尼亚中的东非大裂谷中有重大考古发现。
6.Neoproterozoic Rift Basin Evolution and Its Stratigraphic Division and Correlation in Eastern Guizhou;黔东地区新元古代裂谷盆地演化及地层划分对比研究
7.They indicate that the Archeozoic tectonic environment is continental nucleus development and crustal block formation, and the Early Proterozoic tectonic environment is represented as rift.分别代表了太古宙的陆核发展及地块形成和早元古宙的裂谷构造等大地构造环境。
8.In the end,the relation between the metallogenesis and the evolution of Archaeozoic and Early Proterozoic earth crust is discussed basing upon the theory of rift.最后采用裂谷理论讨论了成矿作用与太古代和早元古代地壳演化的关系。
9.During the late Archaeozoic, there was bimodal volcanism,alkalic magma eruption and intrusion, showing the tension-riftedcharacteristics of the valleys.在晚太古代有“双峰态”火山活动、碱性岩浆喷发和侵入,反映了裂谷拉张特征。
10.Qing-Yuan district is a granite-greenstone terrain, The greenstone was formed during the youth stage of massif rifting in late Archean.清原地区是一个花岗——绿岩区,绿岩是在晚太古代年轻地体裂谷期形成。
11.intracratonic rift-style basin克拉通内裂谷型盆地
12.Jordan Rift Valley Development Master Pla约旦裂谷开发总计划
13.chasms wider than the Grand Canyon,比大峡谷还宽的裂缝，
14.A narrow chasm with steep cliff walls, cut into the earth by running water;a gorge.峡谷带峭壁的狭窄裂缝，由流水切入地表；峡谷
15.Study on Protection and Development of Fugu Ancient City and Village in Shaanxi Province陕西省府谷古城·古村落的保护与发展
16.Transporting condition of faults required in formation of large and medium gas fields with high efficiency in rift basin裂谷盆地高效大中型气田形成的断裂输导条件
17.The old castle walls are crumbling.古城堡的墙在碎裂。
18.We are descending into the Galapagos Rift Valley.我们现在朝向加拉巴戈斯裂谷沉下。
相关短句/例句
Liaodong paleorift辽东古裂谷
3)Zhongtiao paleo rift中条古裂谷
4)Panxi paleorift攀西古裂谷
1.Zircon SHRIMP U-Pb dating was performed on alkali feldspar-quartz syenite and arfvedsonite alkali granite in the Cida alkali complex in the Dechang area, in the Panxi paleorift.对产于攀西古裂谷带内的德昌地区茨达碱性杂岩体中的碱长石英正长岩和钠铁闪石碱性花岗岩进行了锆石SHRIMP U-Pb年龄测定,年龄结果分别为221Ma±6Ma和225Ma±2Ma,表明该碱性岩的结晶年龄或成岩年龄相当于晚三叠世,同时暗示攀西古裂谷的张裂时间为三叠纪。
2.Yele granite exposed in Yele,Mianning,middle sector of west margin of the Yangtze landmass, is a S type granite It gives an isopotic age value of 350±19Ma,so that it was emplaced in the Early Carboniferous and was a product in prerifting anticline uplift stage of the Panxi paleorift This result fills in the gaps in the Early Carboniferous magmatism in this regio在岩体中获 350± 19Ma的年龄值 ,表明其侵位时代为早石炭世 ,为攀西古裂谷孕育时期的裂前台背斜隆起阶段的产物。
5)West Hill palaeorift西山古裂谷
6)Liaoji Paleo-rift辽吉古裂谷
1.The volcanics in the Liaoji Paleo-rift are characterized by bimodal incomposition and high in alkalic eIements.辽吉古裂谷中发育双峰式火山岩。
延伸阅读
大裂谷 由一系列断层围限成的长形的断陷谷地。大裂谷宽多在30～75公里之间，长几百公里到几千公里。东非大裂谷是世界上最长的裂谷系，东支南起希雷河河口，经马拉维湖向北纵贯东非高原和埃塞俄比亚高原中部，沿红海往北延伸到西亚约旦谷地，全长6400多公里；西支南起马拉维湖西北端，经坦噶尼喀湖、基伍湖、阿明湖、蒙博托湖至尼罗河河谷，长约1700公里。苏联贝加尔湖是所有大裂谷中最深的湖泊，最大水深达1600多米。中国山西地堑系可能是大裂谷发育的初期阶段。 地貌特征 ①裂谷长度超过宽度，许多断陷盆地呈规则的雁列式分布，横剖面不对称。②裂谷内有火山分布。③裂谷两侧山地常有夷平面残留。④裂谷中沉积物厚度大，平均1.5～2.5公里，最厚可达7～8公里（南贝加尔盆地）。沉积物颗粒的粒径自下而上逐渐变粗；横向上从裂谷边缘的山麓碎屑沉积相向裂谷中部变为细粒湖相或沼泽相沉积；沉积物中常夹有火山岩沉积。⑤裂谷中现代地壳运动非常活跃,最大沉陷速度可达60～100毫米/年（加利利湖区）；水平运动也明显,埃塞俄比亚裂谷的拉张量为3～8毫米/年；裂谷的热流值一般为2.0微卡/(秒·厘米2)，比全球平均热流值1.5微卡/（秒·厘米2）要高；裂谷的地壳厚度为20～30公里,比大陆地壳平均厚度（40公里）要薄；重力大多为负异常；地震较多,并沿一定方向分布,震源深度多在30公里以内。 成因 由于炽热地幔的上升作用，在地幔对流上升的地方上拱呈穹隆状外形，引起区域性拉张，此处岩石（层）不断变薄，最终导致穹隆轴部破裂而下陷，形成裂谷。裂谷在形成过程中有迁移扩展现象，如贝加尔裂谷带先在南贝加尔盆地形成，然后往东北方向和西南方向扩展，一直到第四纪中期为止。据裂谷中沉积物的粒度可把裂谷作用分为两个阶段:①盆地初始形成阶段,原经长期夷平、起伏很小的地面古风化壳被剥蚀沉积于盆地中,它们都是细粒沉积物；②盆地大幅度下降阶段,地形高差增大，盆地两侧山地侵蚀作用加强，裂谷内堆积粗粒沉积物。
