阿巴克运动；海西运动Arbuckle阿般火山岩albanistone阿贝折射计Abberefractometer阿布沙玄武岩absarokite阿当运动Ardennic阿丁斯克期〔二叠纪〕Artinskianage阿丁新克〔早二叠纪〕Artinskian阿尔卑斯地槽Alpinegeosyncline阿尔卑斯三叠系AlpineTriassicsystem(Alpinetriassysystem)阿尔卑斯闪岩带Alpineamphibolitezone阿尔卑斯式脉Alpinetypevein阿尔卑斯式褶皱Alpinetypeoffolding阿尔卑斯型褶皱Alpinefold阿尔卑斯造山运动Alpineorogeny阿尔必世〔中期白堊纪〕Albian阿尔冈纹造山运动Algomanorogeny阿尔帕三叠系systemtriassiquealpin阿夫顿间冰期Aftonian-interglacialstage阿富汗蜓Afghanella阿克殿期Acadian阿克殿造山运动AcadianOrogeny阿拉伯沙漠Arabiandesert阿莱干尼〔晚期石炭纪〕Allegheny阿力山得统〔早志留纪〕Alexandrian阿利尼克〔早奥陶纪〕Arenigian阿马逊古陆Amazonia阿门虫Ammonia阿摩力运动〔古生代后期〕Armorican阿姆塞石Amssacia阿帕拉阡〔古陆〕Appalachia阿帕拉阡造山运动Appalachianmovement阿普第〔早期白堊纪〕Aptian阿啟坦〔新生代〕Aquitanian阿斯蒂〔第三纪〕Astian阿斯突里运动〔晚石炭纪〕Asturian阿提克运动〔中新世后期〕Attic阿西极〔晚期上奥陶系〕Ashgillian阿席林〔旧石器时代〕Azilian埃及碧石Egyptianjasper(agate)矮小动物群depauoeratefauna矮小动物种dwarffanua艾俄瓦〔期〕Iowan艾俄瓦冰期Iowanglacialstage艾非里(统)〔早期中泥盆纪〕Eifelian艾家层〔中奥陶纪〕Neichia[formation]艾克曼螺旋风层Ekmanspiral艾氏螺旋Airy'sspiral艾氏珊瑚Edwardsia隘〔口〕；埡〔口〕；坳〔口〕pass隘路；穴道passage爱丽斯木角石Ellesmeroceras爱氏单位Eutvos(unit)瞹昧石griphite安大略〔志留纪〕Ontario安得尔石endellite安定地块tessera安沸石arduinite安夫虫；双凹虫Amphoton安加拉〔古陆〕Angara(land)安勒杉Ernestiodendron安尼迷基〔元古代〕Animikian安尼託陨石Anightometrorite安尼西(统)Anisic安尼西〔三叠纪〕Anisian安琪兽Anchitherium安全產量safeyield安山斑岩andesite-porphyry安山玻璃shastalite安山二长安山岩andelatite安山拉长石andesilabradorite安山凝灰岩andesite-tuff安山坡基斑岩andesite-vitrophyre安山玄武岩andesiticbasalt安山岩andesite安山岩线andesiteline安山岩线Marshallline安装钻机时间rigtime鞍；〔菊石类〕saddle(inammonoids)鞍背saddleback鞍部saddle鞍轴saddleaxis鞍状矿脉saddlevein鞍状褶曲saddlefold銨基苯石kladnoite銨钾石膏ammonium-syngenite銨镁矾boussingaultite銨明矾ammonia-alum銨明矾tschermigite銨硼石ammonioborite銨砷钙铀矿ammoniumuranospinite銨水晶石ammoniumcryolite銨碳石teschemacherite銨云母ammonium-mica岸；滩；砂洲bank暗沸绿岩bogusite暗玢火山砾凝灰岩melaphyre-lapillituff暗玢凝灰岩melaphyre-tuff暗橄白榴岩ugandite暗橄辉玄武岩sch?nfelsite暗辉正长斑岩shonkinite-porphyry暗辉正长岩shonkinite暗帘石arendalite暗亮煤岩duroclarite暗榴硷玄岩kivite暗绿石rhodochrome暗绿玉chloromelanite暗绿玉岩chloromelanitite暗绿云母adamsite暗煤attritus(durain)暗煤dullcoal暗煤durain暗煤基matrosite暗煤岩durite暗煤质durinite暗色melanic暗色〔接头语〕mela-暗色矿物darkmineral暗色蓝方碧玄岩heptorite暗色粒变岩trapgranulite暗色流纹英安石melarhyodacite暗色石英苏长岩mela-quartz-norite暗色石英岩melasilexite暗色网状片麻岩trap-shottengneiss暗色玄武岩mela-basalt暗色岩traprock暗色岩脉trapdike暗色岩脉trapdyke暗色岩状trappoid暗色英闪岩melatonalite暗色正长辉长岩melasyenogabbro暗色正长闪长岩melasyenodiorite暗色正长岩hortite暗色正长岩melasyenite暗闪辉长岩issite暗霞玄武岩tannbuschite暗霞正长岩malignite暗硬煤splintcoal凹岸concavebank凹低下部份negativeelement凹地hollow凹顶的emarginate凹角reentrant凹扭形贝Sulcatostrophia凹坡concaveslope凹凸形concave-convex凹向沙丘upsiloidaldune奥层构造infrastructure奥长安山岩kohalaite奥长班...
