| 四川龙门山马角坝地区石炭纪层序地层及海平面变化研究 |
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| 引用本文： | 覃建雄,曾允孚,黄志勋,吴勇.四川龙门山马角坝地区石炭纪层序地层及海平面变化研究[J].沉积与特提斯地质,1996,16(1):19-33. |
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| 作者姓名： | 覃建雄 曾允孚 黄志勋 吴勇 |
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| 作者单位： | 成都理工学院沉积所 |
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| 基金项目： | 成都理工学院青年科学基金 |
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| 摘 要： | 在沉积学、生物地层学研究之基础上，结合沉积地球化学资料，对龙门山马角坝地区石炭系进行了露头层序地层学研究。首次识别出９个三级层序和若干个四至五级高频层序。在三级层序中，岩关组２个、大塘组３个、威宁组２个、马平组２个，它们均可作区域性对比。其中，四个层序分别与冈瓦纳大陆晚古生代五次冰川事件中四次间冰期－冰期旋回相对应，表明其成因与冰川型全球海平面变化有关。显然，研究区石炭纪层序主要受控于全球海平面升降旋回，具有全球对比意义。
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| 关 键 词： | 层序地层学，海平面变化，石炭纪，龙门山马角坝地区，冰川型全球海平面变化 |
| 收稿时间： | 1995/1/3 0:00:00 |
CARBONIFEROUS SEQUENCE STRATIGRAPHY AND SEA-LEVEL CHANGES IN THE MAJIAOBA DISTRICT,SICHUAN |
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| Qin Jianxiong,Zeng Yunfu,Huang Zhixun,Wu Yong.CARBONIFEROUS SEQUENCE STRATIGRAPHY AND SEA-LEVEL CHANGES IN THE MAJIAOBA DISTRICT,SICHUAN[J].Sedimentary Geology and Tethyan Geology,1996,16(1):19-33. |
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| Authors: | Qin Jianxiong Zeng Yunfu Huang Zhixun Wu Yong |
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| Institution: | Chengdu Institute of Technology |
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| Abstract: | Based on key boundaries,systems tracts and stacking patterns,in conjunction with regional geological and biostratigraphic data,the Carboniferous carbonate strata in the Majiaoba district, Sichuan are grouped,for the first time,into nine third-order sequences:two in the Yanguan Formation, three in the Datang Formation, two in the Weining Formation and two in the Maping Formation,all of which, in turn, may be subdivided into a number of the fourth-or fifth-order high-frequency sequences or parasequences.The time intervals of individual third-order sequence range between 2 and 11.5 Ma.And the differences of these sequences are attributed to the variations in periods of relative sea-level rises or falls,amplitudes of tectonic subsidence,rates of carbonate production and modes of sediments supply in the study area. |
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| Keywords: | sequence stratigraphy sea-level change Carboniferous Majiaoba district in the Longmen Mountain area glacio-eustatic change |
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