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- Mesoproterozoic aulacogen 中元古代裂陷槽
- Sinsedimentry volcanic activities in the cracking process of the Mesoproterozoic aulacogen of passive continental margin in Langshan-Zhaertai area, Inner Mongolia, and its indicating significance 内蒙古狼山-渣尔泰山中元古代被动陆缘裂陷槽裂解过程中的火山活动及其示踪意义
- The mineralization epoch is the early period of mesoproterozoic Era. 成矿时代为中元古代早期。
- The arm along which the motion that spreads the plates apart ceases is termed the failed arm, or aulacogen. 沿着它扩张板块分离的运动停止的臂称为夭折臂或断陷槽。
- Aulacogen has clear definition and geologic characteristics, which is a unique petroliferous unit in platform. 裂陷槽有明确的定义和地质特征,是地台上独特的含油气单元。
- The result also support that the Mesoproterozoic orogen in KangdianArea may be related to Grenville orogeny. 富良棚凝灰岩SHRIMP U-Pb年龄也表明康滇南部发育的中元古代晚期造山活动,可能与全球Grenville期造山运动相关。
- The Mesoproterozoic Shuangqiaoshan Group in northern Jiangxi appears as a complete turbidite fan. 赣北中元古界双桥山群是一个完整的浊积扇体。
- At the early period, aulacogen is commonly mistaken as “basement" because of interbed of volcanic rock in sedimentary rocks.In fact, t... 裂陷槽发展的中期是一个相对持续稳定的沉降阶段,有利于烃源岩的生成;
- Yuerya-type gold deposit occurs within the Yanshanian granite and its contact zone with Mesoproterozoic dolomitite. (2)产于中生代花岗岩中及其接触带中的峪耳崖式金矿;
- This paper discusses the filling succession and evolution of the NW-trending Paleozoic Shuicheng-Ziyun aulacogen in western Guizhou. 研究了贵州西部古生代发育起来的北西向水城-紫云裂陷槽盆的充填序列和演化。
- In the north and the east parts, Paleoproterozoic rifting developed well,and then Mesoproterozoic volcanism and weak magmatism overprinted on it. 西南段以新太古代花岗岩-绿岩带的地质事件为主,并叠加较为发育的中生代岩浆活动,成矿以金为主,其次为铜。
- The deep magnetic field characteristics in Qiangtang basin and Cuoqin basin of Qinghai-Ti-bet plateau is presented and analyzed by means of viewpoint of buried aulacogen. 介绍了青藏高原羌塘盆地和措勤盆地的深部磁场特征,用隐伏裂陷槽的观点分析了这些特征。
- Stromatolitic cherts from the Mesoproterozoic Gaoyuzhuang Formation (1.4- 1.5Ga) contain well preserved, paleoecologically diverse microfossils. 华北中元古代高于庄组 ( 1 4- 1 5亿年 )的硅质叠层石中保存了完好的多种微生物化石。
- The aulacogen, post-aulacogen depression and depression took place successively during the Early Proterozoic-Late Palaeozoic in the western margin of the North China Platform. 摘要从古元古代至晚古生代,华北地台西缘经历了坳拉槽、槽后坳和坳陷发育阶段。
- Heterogenity of the carbon source implies the magma beneath the North China platform was not homogeneous at Late Mesoproterozoic. 形成晶体的碳质来源不均一 ,反映了中元古代华北陆台下地壳岩浆成分的不均一性。
- Major and trace element geochemical data show that this deposit was formed in a restricted aulacogen against the setting of an active continental margin. 沉积岩的主元素和特征微量元素地球化学研究表明,该矿床形成于活动大陆边缘的局限裂陷海盆环境。
- The sedimentary facies of Mesoproterozoic in Yanshan aulocogen is regarded as coastal to shallow sea region for a long time. 对燕山沉降带中元古代的沉积相,有关学者大多定位于以滨海-浅海相为主体。
- Spreading or rifting along the other arms of the triple junction can form new oceanic basins, whereas the aulacogen can become a sediment-filled graben. 沿三联点的其他臂发生扩张作用或裂谷作用时,可形成新的大洋盆地,而断陷槽则成为被沉积物充填的地堑。
- The Mesoproterozoic Dahongyu Formation well-developed at Huyu section in Nankou Town,Beijing is characterized by a mixed rock system. 北京西北郊南口虎峪一带的中元古界长城系大红峪组发育完整,以一套混积岩系为特征。
- The Mesoproterozoic Tieling Formation in Huailai, Hebei province, consists principally of an association of littoral-neritic carbonate rocks. 河北省怀来中元古代铁岭组主要为一套滨浅海碳酸盐岩沉积组合。