浙东南早白垩世火山—沉积岩系地层划分

STRATICRAFIC CLASSIFICATION OF EARLY CRETACEOUS VOLCANO-SEDIMENTARY SERIES IN SOUTHEASTERN ZHEJIANG

浙东南下白垩统火山岩极为发育,岩石组合与浙江中部永康群差异甚大,称之为馆头组和朝川组似不合适。文成县峃口镇龙潭山(又称龙井山)剖面具代表性,拟以此部面为基础建立梅坪组和龙潭山组,合称文成群。与永康群对比,梅坪组大体相当馆头组,龙潭山组与朝川组和方岩组对比。

Early Cretaceous volcanics is widely developed in Southeastern Zhejiang. Its rock association extremely differs from Yongkang group in central Zhejiang and therefore its nomenclature as Guan-tou and Zhaochuan formations is unsuitable. Longtaishan(or named as Longjingshan) section in Xuekou, Wencheng county is typically representative and based on it are founded Meiyang and Longtaishan formations collected as Wencheng group. Comparing with Yongkang group the Meiyang formation is roughly equivalent to Ouantou formation and Longtaishan formation-Zhaochuan and Fangyan formations.