| 重庆北碚长兴期腕足动物群落的划分及其地层意义 |
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| 引用本文： | 曾勇,王茵,陈松.重庆北碚长兴期腕足动物群落的划分及其地层意义[J].地层学杂志,2008,32(1):85-90. |
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| 作者姓名： | 曾勇 王茵 陈松 |
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| 作者单位： | 1. 中国矿业大学资源与地球科学学院,江苏徐州,221116;现代古生物学和地层学国家重点实验室,江苏南京,210008
2. 中国矿业大学资源与地球科学学院,江苏徐州,221116 |
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| 摘 要： | 重庆北碚地区晚二叠世长兴期地层出露良好,剖面位于北碚代家沟东北部,经过详细调查研究,在厚度为110.5m的长兴组石灰岩地层中发现有丰富的腕足动物,共有28属46种。按照识别与划分化石群落的5个基本条件,本区长兴期腕足动物可以划分为3个化石群落,本区长兴期生态地层建立3个化石群落带,自上而下为:Uncinunellina-Peltichia带、Haydenella-Perigeyerella带、Oldhamina-Meekella带。从而将本区长兴期地层三分。
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| 关 键 词： | 腕足动物 化石群落带 长兴期 二叠纪 北碚 重庆 |
| 文章编号： | 0253-4959(2008)01-0085-06 |
| 修稿时间： | 2007年3月14日 |
CHANGHSINGIAN BRACHIOPOD PALEOCOMMUNITIES IN BEIBEI, CHONGQING AND THEIR BIOSTRATIGRAPHIC SIGNIFICANCE |
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| ZENG Yong,WANG Yin,CHEN Song.CHANGHSINGIAN BRACHIOPOD PALEOCOMMUNITIES IN BEIBEI, CHONGQING AND THEIR BIOSTRATIGRAPHIC SIGNIFICANCE[J].Journal of Stratigraphy,2008,32(1):85-90. |
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| Authors: | ZENG Yong WANG Yin CHEN Song |
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| Abstract: | The Upper Permian Changhsingian succession is well exposed in the northeast Beibei, Chongqing City. Base on materials collected from a section near Daijiagou, a detailed investigation has been conducted to study the lithostratigraphy and biostratigraphy of the Changhsing Formation. With a thickness of about 110.5m, the Changhsing Formation in this area is composed primarily of carbonate rocks rich in brachiopod fossils. 46 species belonging to 28 genera were identified. The authors used 5 criteria to distinguish brachiopod palaeocommunities. Three brachiopod palaeocommunities are recognized in the Changhsing Formation of the Beibei area. Three palaeocommunity ecostratigraphic zones are identified. These are, in descending order, the Uncinunellina-Peltichia palaeocommunity zone, the Haydenella-Perigeyerella palaeocommunity zone, and Oldhamina-Meekella palaeocommunity zone. |
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| Keywords: | brachiopoda palaeocommunity zone Changhsingian Permian Beibei Chongqing |
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