摘要
福州鸿尾一带原代表省内晚保罗世火山岩地层的正层型鹅宅（南园）组，实为2个完整的紫红色火山沉积-喷发旋回、不整合覆盖于南园组第三段之上，含植物Psoeudofrenelopsisparceramosa，Frenelopsisaff.ramosissimay等，其安山岩Rb－Sr全岩等时线年龄为125±15Ma，重新厘定归属为早白垩世石帽山群黄坑组及寨下组。
The Ezhai (Nanyuan) Formation, located in the Hongwei area of Fuzhou, used to be the prototype profile which represented the late Jurassic volcanical strata of Fujian Province. In fact, the strata are make up of two. completed sets of the amaranthine volcano-sedimentary and volcanic rocks, which unconformably lie on the third segment of Nanyuan Formation. Some fossils such as Pseudofrenelopsis pare.eramosa, Frenelopsis aff. ramosissimay have been found in the strata and the whole-rock isotime age (Rb-Sr method) of the andesite is about 125±15 Ma. So, it is redefinited that the strata belong to the early Cretaceous Huangkeng Formation and Zaixia Formation of the Shimaoshan Group.
出处
《福建地质》
1998年第4期171-176,共6页
Geology of Fujian
关键词
石帽山群
早白垩世
福建
地层
时代归属
鹅宅组
Ezhai (Nanyuan) Formation, prototype profile, Shimaoshan Group, earyl Cretaceous, Fujian Province
