| 华南地区奥陶纪头足类生物相及其分区 |
| |
| 引用本文： | 肖传桃,龚文平,罗顺社,何幼斌,李艺斌.华南地区奥陶纪头足类生物相及其分区[J].沉积学报,2006,24(2):242-250. |
| |
| 作者姓名： | 肖传桃 龚文平 罗顺社 何幼斌 李艺斌 |
| |
| 作者单位： | 中国地质大学地球科学学院 武汉 430074 |
| |
| 基金项目： | 国家自然科学基金项目(批准号:40272060)资助 |
| |
| 摘 要： | 在研究华南地区奥陶纪头足类生态特征基础上，根据头足类的生态类型及其保存条件等特征，识别出18个头足类生物相，即开阔台地WT5”BX]Proterocameroceras生物相，局限台地Pseudoectenolites-Xiadongoceras生物相，开阔台地Retroclitendoceras-Pararetrocli tendoceras生物相，开阔台地Pronajaceras-Mamagouceras生物相，陆棚斜坡—盆地Cyclostomiceras-Bactroceras生物相，开阔台地 Cameroceras-Cyrtovaginoceras生物相，开阔台地 Coreanoceras-Manchuroceras生物相，陆棚斜坡—盆地Kaipingoceras-Kyminoceras生物相，内陆棚Bathmoceras-Protocycloceras生物相，中部陆棚Dideroceras-Ancistroceras生物相，深水陆棚 Lituites-Cyclolituites 生物相，滞流盆地Lituites-Trilacinoceras生物相，深水盆地Paraendoceras-Sactorthoceras，深水陆棚Sinoceras-Michelinoceras-Disoceras生物相，深水陆棚Beloitoceras-Jiangshanoceras生物相，深水陆棚—盆地Eurasiaticoceras生物相，浅海陆棚—斜坡Jiangxiceras-Yushanoceras生物相，深水盆地MichelinocerasWT5”BZ]生物相，并阐述各生物相的组成、生态特征及其生态环境。根据头足类生物相在时间和空间上的组合规律，划分出3个头足类生物相区，即扬子生物相区、黔东—湘西生物相区（过渡型生物相区）和湘中—浙西生物相区，并讨论了各生物相区在不同时期内头足类生态类型和生物相分异特征、海平面升降、环境演变特征以及其与油气的关系。认为在低海平面或海平面下降阶段中生物相分异明显，而在高海平面阶段中则分异较小。
|
| 关 键 词： | 头足类 生物相 生物相分区 海平面变化 奥陶纪 华南地区 |
| 文章编号： | 1000-0550（2006）02-0242-09 |
| 收稿时间： | 2004-06-05 |
| 修稿时间： | 2005-03-15 |
Ordovician Cephalopoda Biofacies and Their Provincialization in the South China |
| |
| XIAO Chuan-tao,GONG Wen-ping,LUO Shun-she,HE You-bin,LI Yi-bin.Ordovician Cephalopoda Biofacies and Their Provincialization in the South China[J].Acta Sedimentologica Sinica,2006,24(2):242-250. |
| |
| Authors: | XIAO Chuan-tao GONG Wen-ping LUO Shun-she HE You-bin LI Yi-bin |
| |
| Institution: | China University of Geosciences, Wuhan 430074 |
| |
| Abstract: | Based on studies of ecological characteristics of Ordovician Cephalopod from the southern China, Eighteen Cephalopod biofacies are recognized and described: 1.Open platform Proterocameroceras biofacies, 2. Restricted platform Pseudoectenolites-Xiadongoceras biofacies, 3. Open platform Retroclitendoceras-Pararetroclitendoceras biofacies, 4. Open platform Pronajaceras- Mamagouceras biofacies, 5. Shelf slope-basin Cyclostomiceras biofacies, 6. Open platform Cameroceras-Cyrtovaginoceras biofacies, 7. Open platform Coreanoceras-Manchuroceras biofacies, 8. Shelf slope-basin Kaipingoceras-Kyminoceras biofacies, 9. Inner shelf Bathmoceras-Protocycloceras biofacies, 10. Middle shelf Dideroceras-Ancistroceras biofacies, 11. Deep-water shelf Lituites-Cyclolituites biofacies, 12. Stagnant basin Lituites-Trilacinoceras biofacies, 13. Deep-water basin Paraendoceras-Sactorthoceras biofacies, 14. Deep-water shelf Sinoceras-Michelinoceras-Disoceras biofacies, 15. Deep-water shelf Beloitoceras- Jiangshanoceras biofacies, 16. Deep-water shelf-basin Eurasiaticoceras biofacies, 17. Shelf-slope Jiangxiceras-Yushanoceras biofacies, 18. Deep-water basin Michelinoceras biofacies. At the same time , the components of these biofaciess, ecological characteristics and their living conditions are elucidated in this paper. The assemblage law of cephalopod biofacies in time and space shows that there are three cephalopod biofacies provinces in the south China, i.e.,Yangtze biofacies province, East Guizhou--West Hunan biofacies province (mixed-type biofacies province)and Middle Hunan-West Zhejiang biofacies province. It is suggested that the differentiation of cephalopod biofacies would mainly be controlled by sea level changes and tectonic evolution. The differentiation is obvious during lower sea level and not developed during high sea level. |
| |
| Keywords: | cephalopoda biofacies cephalopoda biofacies province sea level changes Ordovician South China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
|
