古生代 gǔ shēng dài Paleozoic, geological era 545-250m years ago, covering Cambrian 寒武紀|寒武纪, Ordovician 奧陶紀|奥陶纪, Silurian 志留紀|志留纪, Devonian 泥盆紀|泥盆纪, Carboniferous 石炭紀|石炭纪, Permian 二疊紀|二叠纪 奥陶纪 奧陶紀 ào táo jì Ordovician (geological period 495-440m years ago) 环境地质学 環境地質學 environmental geology / geo-ecology / eco-geology / geotechnics 生态地质学 生態地質學 environmental geology / geo-ecology / eco-geology / geotechnics 反狙击手系统 反狙擊手系統 counter-sniper system / sniper-locating system / sniper-detection system / anti-sniper system 狙击手定位系统 狙擊手定位系統 counter-sniper system / sniper-locating system / sniper-detection system / anti-sniper system 石炭系 shí tàn xì carboniferous system / coal measure (geology) 古新统 古新統 gǔ xīn tǒng Palaeocene system (geology) 始新统 始新統 shǐ xīn tǒng Eocene system (geology) 志留系 zhì liú xì Silurian system (geology) / see 志留紀|志留纪 渐新统 漸新統 jiàn xīn tǒng Oligocene system (geology) 褶皱山系 褶皺山系 zhě zhòu shān xì fold mountain system (geology) 国际铀地质信息系统 International Uranium Geology Information System 等轴晶系 等軸晶系 děng zhóu jīng xì cubical system (crystallography) / crystal system based on cubic lattice / equiaxial crystal system 点火系统 點火繫統 diǎn huǒ xì tǒng triggering system / firing system / firing set / fusing system 欧洲账户体系 歐洲賬戶体系 ōu zhōu zhàng hù tǐ xì European System of Accounts / European System of Accounts 1995 / European System of National and Regional Accounts 欧洲国民和地区账户体系 歐洲國民和地區賬戶體系 European System of Accounts / European System of Accounts 1995 / European System of National and Regional Accounts 联合国薪金、津贴和福利共同制度 聯合國薪金、津貼和福利共同制度 United Nations Common System of Salaries, Allowances and Benefits / United Nations Common System / Common System 联合国共同制度 聯合國共同制度 lián hé guó gòng tòng zhì duó United Nations Common System of Salaries, Allowances and Benefits / United Nations Common System / Common System 共同制度 gòng tòng zhì duó United Nations Common System of Salaries, Allowances and Benefits / United Nations Common System / Common System 走向 zǒu xiàng direction / strike (i.e. angle of inclination in geology) / inclination / trend / to move towards / to head for 板块 板塊 bǎn kuài slab / (geology) tectonic plate / (fig.) sector (of the stock market or of industry) / (economic) bloc 层面 層面 céng miàn aspect / facet / level (political, psychological, spiritual etc) / (geology) bedding plane syn 构造 構造 gòu zào structure / composition / tectonic (geology) / CL:個|个[ge4] syn 地质 地質 dì zhì geology 台阶 臺階 tái jiē steps / flight of steps / step (over obstacle) / fig. way out of an embarrassing situation / bench (geology) syn 内核 內核 nèi hé core (of a fruit) / (fig.) the essence (of a concept or doctrine etc) / (geology) inner core / (computing) kernel syn 地块 地塊 dì kuài parcel of land / (geology) massif 变质 變質 biàn zhì to degenerate / to deteriorate / (of food) to go bad / to go off / (geology) metamorphism syn 地貌 dì mào (geology) landform / geomorphology syn 沉积 沉積 chén jī sediment / deposit / sedimentation (geology) syn 剪切 jiǎn qiē to cut (with scissors or similar tool) / to shear / (geology) shear / (computing) to cut (as in "cut-and-paste") syn 断层 斷層 duàn céng fault (geology) (CL:道[dao4]) / (fig.) gap / rupture (in the transmission of some skill) / (tomography) cross-sectional 岩浆 岩漿 yán jiāng (geology) magma 溶洞 róng dòng (geology) solutional cave (typically, a limestone cave) 熔岩 róng yán (geology) lava 地层 地層 dì céng stratum (geology) 风口 風口 fēng kǒu air vent / drafty place / wind gap (geology) / tuyere (furnace air nozzle) / (fig.) hot trend / fad 褶皱 褶皺 zhě zhòu fold / crease / wrinkle / (geology) fold syn 地质学 地質學 dì zhì xué geology 孔隙 kǒng xì pore (geology) syn 喀斯特 kā sī tè (geology) karst (loanword) 岩溶 yán róng (geology) karst 玄武岩 xuán wǔ yán (geology) basalt 剥蚀 剝蝕 bō shí to corrode / to expose by corrosion (geology) 重晶石 zhòng jīng shí barite (geology) 元 yuán currency unit (esp. Chinese yuan) / (bound form) first / original / primary / (bound form) basic / fundamental / (bound form) constituent / part / (prefix) meta- / (math.) argument / variable / era (of a reign) / (Tw) (geology) eon syn 层状 層狀 céng zhuàng stratified / bedded (geology) 地核 dì hé core of the earth (geology) syn 软泥 軟泥 ruǎn ní soft mud / silt / sludge / ooze (geology) 向斜 xiàng xié syncline (geology) 矿体 礦體 kuàng tǐ ore body (geology) syn 地幔 dì màn (geology) (the earth's) mantle 沉积岩 沉積岩 chén jī yán sedimentary rock (geology) 硅化木 guī huà mù petrified wood (geology) 砾岩 礫岩 lì yán conglomerate (geology) 文石 wén shí aragonite (geology) 岩石圈 yán shí quān lithosphere (in geology, the rigid crust of the earth) 火成岩 huǒ chéng yán igneous rock (geology) / volcanic rock 地层学 地層學 dì céng xué stratigraphy (geology) 白云岩 白雲岩 bái yún yán dolomite (geology) 背斜 bèi xié anticline (geology) 宙 zhòu eternity / (geology) eon 变质岩 變質岩 biàn zhì yán metamorphic rock (geology) 变质作用 變質作用 biàn zhì zuò yòng metamorphism (geology) 捕虏岩 捕虜岩 bǔ lǔ yán xenolith (geology) 沉积作用 沉積作用 chén jī zuò yòng sedimentation (geology) 橄榄岩 橄欖岩 gǎn lǎn yán peridotite (geology) 辉长岩 輝長岩 huī cháng yán gabbro (geology) 辉绿岩 輝綠岩 huī lǜ yán diabase (geology) / dolerite 全新纪 全新紀 quán xīn jì (geology) the Holocene Epoch 全新世 quán xīn shì (geology) the Holocene Epoch 蛇绿岩 蛇綠岩 shé lǜ yán ophiolite (geology) 蛇纹石 蛇紋石 shé wén shí serpentine (geology) 蛇纹岩 蛇紋岩 shé wén yán serpentine (geology) 水圈 shuǐ quān the earth's ocean / the hydrosphere (geology) 碳酸岩 tàn suān yán carbonate rock (geology) 枕状玄武岩 枕狀玄武岩 zhěn zhuàng xuán wǔ yán pillow lava (geology) / pillow basalt 浊积岩 濁積岩 zhuó jī yán turbidite (geology) 斑岩 bān yán porphyry (geology) 中央海岭 中央海嶺 zhōng yāng hǎi lǐng mid-ocean ridge (geology) 中洋脊 zhōng yáng jǐ mid-ocean ridge (geology) 中脊 zhōng jǐ mid-ocean ridge (geology) 印支期 yìn zhī qī Indo-Chinese epoch (geology) / Indosinian orogeny 噴出岩 pēn chū yán extrusive rock (geology) 坳陷 ào xiàn (geology) depression / low-lying area 大洋中脊 dà yáng zhōng jǐ mid-ocean ridge (geology) 大洋型地壳 大洋型地殼 dà yáng xíng dì qiào oceanic crust (geology) 大陆块 大陸塊 dà lù kuài continental plates (geology) 安山岩 ān shān yán andesite (geology) 岛弧 島弧 dǎo hú (geology) island arc 崩坏作用 崩壞作用 bēng huài zuò yòng mass wasting (geology) / slope movement 岩流圈 yán liú quān asthenosphere (geology) 断裂带 斷裂帶 duàn liè dài fault zone (geology) 李希霍芬 lǐ xī huò fēn Ferdinand von Richthofen (1833-1905), German geologist and explorer who published a major foundational study of the geology of China in 1887 and first introduced the term Silk Road 絲綢之路|丝绸之路 正断层 正斷層 zhèng duàn céng normal fault (geology) 壳幔 殼幔 ké màn crust-mantle (geology) 沉积带 沉積帶 chén jī dài sedimentary belt (geology) 泛大洋 fàn dà yáng Panthalassis (geology) 