era n. 1.纪元;年代,时代。 2.【地质学;地理学】代。 inaugurate [mark] a new era 开[划]新纪元。 before [in] the Christian era 公元前[后]。 ERA, E.R.A. = 1.Emergency Relief Administration 〔美旧〕紧急救济署。 2.engine-room artifier 【航海】机舱机电军士。
There is a north - north - east negative anomaly belt of aerial magnetism in the middle - east part of the basin , which could be displayed by the aerial magnetism of commutative field , upwardly continuation , lvt in earthquakes , the experimentation of granite liquation ( demagnetization ) , the distribution of neozoic era volcanic rock , earthquake , hot spring and ground feature . the anomaly shows the blocking in east - west direction , and it is also associated with intense activity of deep heat interaction and the development of the crust - mantle mixed layer in the north qiangtang 从区域航磁、向上延拓、地震低速层、花岗岩熔融(退磁)实验、新生代火山岩的分布、地震、温泉、地貌等发现,盆地中东部存在一北北东向航磁负异常带,既显示出东西分块,也与北羌塘深部热力作用强烈活动、发育“壳幔混合层”有联系。