六盘山西侧山麓剥蚀面的发育与新构造隆升

杨东; 方小敏; 宋友桂; 吕连清; 李吉均; 安芷生

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六盘山西侧山麓剥蚀面的发育与新构造隆升

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生

文章导航 > 沉积学报 > 2002 > 20(2): 282-287

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

引用本文:

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

Citation:

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

引用本文:

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

Citation:

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

六盘山西侧山麓剥蚀面的发育与新构造隆升

杨东^{1, 2},
方小敏^{1, 3},
宋友桂^{1, 3},
吕连清¹,
李吉均¹,
安芷生²

1.
西部环境教育部重点实验室& 兰州大学地理系兰州 730000;
2.
西北师范大学地理系兰州 730070;
3.
中国科学院地球环境研究所西安 750054

基金项目: 中国科学院引进国外杰出人才计划(批准号:人教字[2000]005号);国家杰出青年科学基金(批准号:4992810);国家重点基础研究发展规划项目(批准号:G1998040800)资助。

详细信息

作者简介:
杨东，男，1968年出生，讲师，自然地理

中图分类号: P542

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文章访问数: 556
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Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

YANG Dong^{1, 2},

1.
Key Laboratory of Western China's environment Systems of Ministry of education& Depart ment of geography,Lanzhou university,Lanzhou, 730000;
2.
Nort hwest Nor mal university,Lanzhou, 730070,China;
3.
Instit ute of eart h environment,Chinese Academy of Sciences,Xi'an,750054 China

摘要

摘要: 晚新生代青藏高原的隆升对其周围地貌格局和沉积产生了重大影响。地处高原东北构造边界的六盘山受其影响产生明显的地貌分异，造成黄土高原东西两部分巨大的风成沉积差异。最近对位于六盘山西侧陇中盆地东北边缘黄河最高阶地之上的山麓剥蚀面上的黄土磁性地层学研究表明该剥蚀面形成于约1.8 MaBP，与陇中盆地西南隅的兰州、临夏两地山麓剥蚀面的年龄一致_〔1〕，表明在约1.8 MaBP 以前六盘山以西普遍遭受剥蚀，可能形成一级统一的山麓剥蚀面，即所谓的甘肃期准平原，并指示在约1.8 MaBP 时，六盘山和青藏高原曾产生进一步强烈抬升，该剥蚀面发育结束，黄河出现，黄土开始堆积_〔1，2〕。
- 六盘山 /
- 黄土 /
- 新构造隆升 /
- 山麓剥蚀面 /
- 陇中盆地
Abstract: The late Cenozoic uplift of the Tibetan Plateau played a great role in the geomorphic and depositional evolution of its adjacent areas. This effect has brought about the Liupan Mountain at the northeastern tectonic margin of the Tibetan Plateau developed with quite different geomorphology in its two sides, resulting in large differences in wind-blown depositional environment between the eastern and western parts of the Chinese Loess Plateau. A well-preserved pediment, covered by 235 m thick loess, was recently found at the western side of the Liupan Mountain, which stands above the highest terrace of the Yellow River in the northeastern Longzhong Basin. The paleomagnetism of the loess section shows that the pediment developed at ～1.8 Ma BP, so did that of the pediments in Lanzhou-Linxia region in the southwestern Longzhong Basin. This implies that the Longzhong Basin to the west of the Liupan Mountain had been subject to long term denudation before ～1.8 Ma BP, and wight have finally developed a joined pediment or so-called Gansu Peneplain covering the whole Longzhong Basin. The large incision of the pediment and start of deposition of loess on the pediment at ～1.8 Ma BP suggest that the Tibetan Plateau and the Liupan Mountain rose strongly at that time, causing not only the end of the pediment but also the subsequent appearance of the Yellow River in the Basin.
- Liupan Mountain /
- loess /
- pediment /
- Tibet uplift /

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参考文献(2)

[1]

1. 李吉均。晚新生代黄河上游地貌演化与青藏高原隆升[J].中国科学，B 辑，1996,26（4）:136～146[Li Jijun.The geomorphological evolution in the upper reaches of the Yellow River and uplift of Qinghai-Xizang Pleteau[J].Scientia Sinica.Series D ,1996,26（4）:316～146]

2. Ruddiman,W F,and Kutzbach,J.E.Late Cenozoic plateau uplift and climate change[J].Trans.Roy.Soc.Edinb.Earth Sci.,1990,81: 301～314

3. 李吉均。青藏高原隆升的时代、幅度和形式问题的探讨[J].中国科学，1979,22（6）:608～616[Li J J.A discussion on the period,amplitude and type of the uplift of the Qinghai-Xizang Plateau[J].Scientia Sinica,1979,22（6）:608～616]

4. Lijijun.Late Cenozonic magnetratigraphy （11～OMa） of the Dongshanding and Wangjiashan sections in the Longzhong Basin ,Western China[J].Geologie en Mijnbouw,1997,76: 121～134

[2]

Ding Z L.Preliminary magnetostratigraphy of a thick eolian red clay-loess sequence at Lingtai,The Chinese Loess Plateau[J].Geophysical Research Letters,1998,8 （25）:1 225～1 228

6. 宋友桂。六盘山东麓朝那剖面红粘土年代及其构造意义。第四纪研究。2000,20（5）:463～468[Song Yougui.Age of red clay at Chaona section near eastern LiuPan Mountain and its tectonic significance[J].Quat.Sci.,2000,20（5）:463～468]

7. 方小敏。临夏盆地新生代地层绝对年代测定与划分[J].科学通报，1997,42（14）:1 457～1 461[Fang Xiaomin.Age-dating and classification of Cenozoic stratigraphy in the Linxia Basion.Gansu Province[J].Chinese Sci.Bull.,1997,42（14）:1 457～1 461]

8. 李吉均。临夏盆地新生代地层古地磁年代与模式序列[A].见:青藏高原形成演化、环境变迁与生态系统研究学术论文年刊（1994）[C].北京:科学出版社，1995.91～95[Li Jijun.Amagnetic age-dating and classification of cenozoic stratigraphy in the Linxia Basion Gansu Province[A].Yearbook of scientific paper in the research of form evolution,environment changes and ecosystem of the Qinghai-Xizang Plateau （1994）[C].Beijing:Sciences Press,1995.91～95]

9. 陈梦熊。甘肃中部之地文[J].地质论评，1947,12:545～556[Chen Menxiong.The Physiographical Stage at the center of Gansu[J].Geological Review,1947,12:545～556]

10. 岳乐平。靖远黄土剖面磁性地层的初步研究[J].第四纪研究，1991,4:349～353[Yue Leping.Amagnetic stratigraphy study on the Jingyuan loess section,Gansu,China[J].Quat.Sci.,1991,4:349～353]

11. 文启忠。甘肃陇西盆地的黄土[J].地理科学，1982,2（3）:202～209[Wen Qizhong.Loess of LongXi Basin in Gansu Province[J].Scientia Geographica Sinica,1982,2（3）:202～209]

12. 刘东生。黄土与环境[M].北京:海洋出版社，1985.251～255[Liu T S.Loess and the Environment[M].Beijing:China Ocean Press,1985.251～255]

13. Ruter N W.Magnetostratigraphy of the Baoji loess-paleosol section in the north-central China Loess Plateau[J].Quat.Inter.,1990.7～8,97～102

14. Liu X M.The Chinese loess in Xifeng,I.The primary study on magnet-tostratigraphy of a loess profile in Xifeng,Gansu Province[J].Geophys.J.,1987,92: 349～352

15. Kukla,G.Loess stratigraphy incentral China[J].Palaeogeogr .Palaeo- climatol.Palaeoecol.,1989,72:203～225

16. Cande,S.C.& D.V.Kent.Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoi[J].Geophys.Res.,1995,100: 6 093～6 095

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六盘山西侧山麓剥蚀面的发育与新构造隆升

1. 西部环境教育部重点实验室& 兰州大学地理系兰州 730000;

2. 西北师范大学地理系兰州 730070;

3. 中国科学院地球环境研究所西安 750054

作者简介:
杨东，男，1968年出生，讲师，自然地理

收稿日期: 2001-06-28
修回日期: 2001-10-11
刊出日期: 2002-04-10

中图分类号: P542

关键词:

六盘山 /

黄土 /

新构造隆升 /

山麓剥蚀面 /

陇中盆地

摘要: 晚新生代青藏高原的隆升对其周围地貌格局和沉积产生了重大影响。地处高原东北构造边界的六盘山受其影响产生明显的地貌分异，造成黄土高原东西两部分巨大的风成沉积差异。最近对位于六盘山西侧陇中盆地东北边缘黄河最高阶地之上的山麓剥蚀面上的黄土磁性地层学研究表明该剥蚀面形成于约1.8 MaBP，与陇中盆地西南隅的兰州、临夏两地山麓剥蚀面的年龄一致_〔1〕，表明在约1.8 MaBP 以前六盘山以西普遍遭受剥蚀，可能形成一级统一的山麓剥蚀面，即所谓的甘肃期准平原，并指示在约1.8 MaBP 时，六盘山和青藏高原曾产生进一步强烈抬升，该剥蚀面发育结束，黄河出现，黄土开始堆积_〔1，2〕。

English Abstract

Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

YANG Dong^{1, 2},

1. Key Laboratory of Western China's environment Systems of Ministry of education& Depart ment of geography,Lanzhou university,Lanzhou, 730000;

2. Nort hwest Nor mal university,Lanzhou, 730070,China;

3. Instit ute of eart h environment,Chinese Academy of Sciences,Xi'an,750054 China

Received Date: 2001-06-28
Rev Recd Date: 2001-10-11
Publish Date: 2002-04-10

Keywords:

Abstract: The late Cenozoic uplift of the Tibetan Plateau played a great role in the geomorphic and depositional evolution of its adjacent areas. This effect has brought about the Liupan Mountain at the northeastern tectonic margin of the Tibetan Plateau developed with quite different geomorphology in its two sides, resulting in large differences in wind-blown depositional environment between the eastern and western parts of the Chinese Loess Plateau. A well-preserved pediment, covered by 235 m thick loess, was recently found at the western side of the Liupan Mountain, which stands above the highest terrace of the Yellow River in the northeastern Longzhong Basin. The paleomagnetism of the loess section shows that the pediment developed at ～1.8 Ma BP, so did that of the pediments in Lanzhou-Linxia region in the southwestern Longzhong Basin. This implies that the Longzhong Basin to the west of the Liupan Mountain had been subject to long term denudation before ～1.8 Ma BP, and wight have finally developed a joined pediment or so-called Gansu Peneplain covering the whole Longzhong Basin. The large incision of the pediment and start of deposition of loess on the pediment at ～1.8 Ma BP suggest that the Tibetan Plateau and the Liupan Mountain rose strongly at that time, causing not only the end of the pediment but also the subsequent appearance of the Yellow River in the Basin.

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

引用本文:

杨东, 方小敏, 宋友桂, 吕连清, 李吉均, 安芷生. 六盘山西侧山麓剥蚀面的发育与新构造隆升[J]. 沉积学报, 2002, 20(2): 282-287.

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

Citation:

YANG Dong, . Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift[J]. Acta Sedimentologica Sinica, 2002, 20(2): 282-287.

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六盘山西侧山麓剥蚀面的发育与新构造隆升

作者简介:
杨东，男，1968年出生，讲师，自然地理

计量

Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

计量

目录

六盘山西侧山麓剥蚀面的发育与新构造隆升

1. 西部环境教育部重点实验室& 兰州大学地理系兰州 730000;

2. 西北师范大学地理系兰州 730070;

3. 中国科学院地球环境研究所西安 750054

作者简介:
杨东，男，1968年出生，讲师，自然地理

English Abstract

Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

1. Key Laboratory of Western China's environment Systems of Ministry of education& Depart ment of geography,Lanzhou university,Lanzhou, 730000;

2. Nort hwest Nor mal university,Lanzhou, 730070,China;

3. Instit ute of eart h environment,Chinese Academy of Sciences,Xi'an,750054 China

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六盘山西侧山麓剥蚀面的发育与新构造隆升

作者简介: 杨东，男，1968年出生，讲师，自然地理

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Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

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目录

六盘山西侧山麓剥蚀面的发育与新构造隆升

1. 西部环境教育部重点实验室& 兰州大学地理系 兰州 730000; 2. 西北师范大学地理系 兰州 730070; 3. 中国科学院地球环境研究所 西安 750054

作者简介: 杨东，男，1968年出生，讲师，自然地理

English Abstract

Pediment near the Western Liupan Mountain and Its Implication on the Neotectonic Uplift

1. Key Laboratory of Western China's environment Systems of Ministry of education& Depart ment of geography,Lanzhou university,Lanzhou, 730000; 2. Nort hwest Nor mal university,Lanzhou, 730070,China; 3. Instit ute of eart h environment,Chinese Academy of Sciences,Xi'an,750054 China

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目录

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期刊在线

联系我们

作者简介:
杨东，男，1968年出生，讲师，自然地理

1. 西部环境教育部重点实验室& 兰州大学地理系兰州 730000;

2. 西北师范大学地理系兰州 730070;

3. 中国科学院地球环境研究所西安 750054

作者简介:
杨东，男，1968年出生，讲师，自然地理

1. Key Laboratory of Western China's environment Systems of Ministry of education& Depart ment of geography,Lanzhou university,Lanzhou, 730000;

2. Nort hwest Nor mal university,Lanzhou, 730070,China;

3. Instit ute of eart h environment,Chinese Academy of Sciences,Xi'an,750054 China