| 浙江桐庐阳新统栖霞组的■类化石及多重地层划分 |
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| 作者单位： | 浙江省地质调查院 浙江杭州311203 |
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| 摘 要： | 浙江桐庐栖霞组可划分为二个带:上部为Cancelli naneoschwagerinoides-Verbeekina grabaui带,归属祥播阶;下部为Misellinaclaudiae带,归属罗甸阶。栖霞组被划分出3个正层序和6个四级层序。高频旋回层研究表明:栖霞组主要的成岩环境有台地相、浅海陆棚相和盆地相三种类型,从下至上总体反映为台地向盆地的演化环境。
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| 关 键 词： | ■化石带 阳新统 二叠系 栖霞组 多重地层划分 桐庐 浙江 |
FUSULINIDS AND STRATIGRAPHIC SUBDIVISION OF THE QIXIA FORMATION OF THE YANGXIN SERIES IN THE TONGLU AREA,ZHEJIANG |
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| Authors: | YAN Tie-zeng ZHU Chao-hui LU Cheng-zhong and XU Xing-miaoZhejiang Geological Survey Hangzhou |
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| Institution: | YAN Tie-zeng,ZHU Chao-hui,LU Cheng-zhong,and XU Xing-miaoZhejiang Geological Survey,Hangzhou,311203 |
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| Abstract: | The Qixia Formation in the Tonglu area of Zhejiang Province can be divided into two fusulinid biozones:the upper Cancellina neoschwagerinoides-Verbeekina grabaui zone of the Xiangbo Stage and the lower Misellina claudiae zone of the Luodian Stage.The Qixia Formation includes three 3rd-order sequences and six 4th-order sequences.On the basis of sedimentary cycles of the Qixia Formation,three depositional facies can be recognized:platform facies, shallow sea continental shelf facies and basinal facies. The Qixia Formation records a deepening upward sequence,shifting from platform to basin facies. |
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| Keywords: | fusulinid biozone Yangxin Series Permian System Qixia Formation multi-stratigraphic subdivision Tonglu Zhejiang |
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