[词源] 源于希腊词aulax(垄沟)和genes(起源)。 [定义] 坳拉谷是很深的垅沟,常常很窄,一般从克拉通边缘的凹形湾延伸到克拉通内部,并充填有厚达几千米的沉积物。在这里,沉积作用与凹陷作用,偶尔还有碱性玄武岩火山作用同时发生。 [历史] 坳拉谷概念的提出,起源于H.C.沙茨基对克拉通所作的一般性研究和对东欧地台所作的专 [Etymology] From the Greek words aulax (furrows) and genes (origin). [Definition] The Aura Valley is a very deep gutter, often narrow, extending generally from the craters of the cratons to the interior of the cratons and filled with sediments up to several thousand meters thick. Here, sedimentation and depression, and occasionally alkaline basaltic volcanism occur simultaneously. [History] The concept of the Aura valley originated from the general research done by H. Schartsky on cratons and the specialization of the Eastern European platform