西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

张晓宝; 方国庆; 何海清

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西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

张晓宝, 方国庆, 何海清

文章导航 > 沉积学报 > 1994 > 12(4): 124-131

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

引用本文:

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

Zhang Xiaobao, Fang Guoqing, He Haiqing. A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.[J]. Acta Sedimentologica Sinica, 1994, 12(4): 124-131.

Citation:

Zhang Xiaobao, Fang Guoqing, He Haiqing. A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.[J]. Acta Sedimentologica Sinica, 1994, 12(4): 124-131.

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

引用本文:

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

Citation:

西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

中国科学院兰州地质研究所

详细信息

作者简介:
张晓宝男 36岁助理研究员沉积学

中图分类号: P588.2

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文章访问数: 627
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A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

lanzhou Institute of Geololgy, Chinese Academy of Sciences, 730000

摘要

摘要: 西秦岭上三叠统为一套半深海环境中形成的陆源碎屑浊积岩系，于该该积岩系中发现了大量的波痕。本文详细研究了这些波痕的形态特征及其与鲍马尾序和浊积岩相组合的关系。研究结果表明这些波痕是浊流演化过程中转化而来的牵引流作用于底部床沙形成的。
- 浊流 /
- 牵引流 /
- 波痕
Abstract: For a long time, ripple marks were often regarded as one of sedimentary indicators of shallow water, but large quantities of them were also found in bathyal terrigenous elastic turbidites of Upper Triassic of west Qinling Mts. The ripple marks characterize that(1)they occour on the surface of T_c of Bouma sequence, which means that they were formed by tractive currents derived from turbidity flows, ( 2 ) they exist in the lobe facies associations of seafloor fan sequences, which indicates that the most favourable hydrodynamic }rtditions to form them appeared in outer fans,(3)they are all symmetrical，which shows that tractfve currents to form them were unidirectional, ( 4 ) They are smal l-scale，which proves that the veIocIty of tractive currents and the grain size of bottom bed sands varied in a certain extend,(5)their wavelengths and heights are directly proportional to the thickness of turbidites, which means that the strength of tractive currents was controlled by the scale and strength of turbidity flows, (6)the shapes of wave crests and troughs are smooth and the shapes of ripple ridges are regularly changeable , ( 7 ) their shapes and scales are closely related with those of ripple laminations in T_c intervals of Bouma sequences, which reflects that they were two forms of expression produced by the same tractive currents,(8 ) The flow directions determined by ripple marks are consistent with those determined by bottom marks,which reflects that the flow directions of tractive currents were controlled by those of turbidity flows. The characteristics above reflect that ripple marks occoured not only in shallow-water enviroments but also in deep water enviroments.
- turbidity flow /
- tractive current /
- ripple mark

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参考文献(9)

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[3]	甘肃省地矿局，1989，甘肃省区城地质志，地质出版社，239~243,
[4]	殷鸿福等.1992,秦岭及邻区三盛系，中国地质大学出版社。
[5]	Mutti E. and Rica Luoati F. R.，1972, Turbidites of the northern Apennines, Introduction to fades analysis (English translation, 1978). Int. Geol. Rev.，V. 20, p. 125~166.
[6]	Mutti E. and Normark W. R..1987. Comparing examples of modern and ancient turbidite systems; problems and concepts.in; J. K. Leggett and G. G. Zuffa (eds). Marine elastic Sedirttentology, conoepta and case studies. Graham and Trotman,Landon, p. 1~37.
[7]	Seilacher A.，1967, BaVtymetry of trace Paenils. Mar. Geol.，No. 5 p. 413~428.
[8]	Middleton, G. V. and Hampton, M. A. 1973. sediment gravity flows; Medumics of flow and deposition, Part I. In middleton, G. V. and Bouma. A. H. Cha. Turbidites and doep一water sedimentation:Ion Angeles, Calif. SEPM pacific section , short course lecture notes. p. 1 ~38.
[9]	Simons, D. B.，Richardson, E. V. and Nordin, C. F. Jr.，1965, sedimentary structures generated by flow in alluvial, In Middleton, G. V. ed. Primary sedimentary structures and their hydradynamlc interpretation, Symposium; Tulsa, Okla.SEPM Spee. Pub. No. 12, p. 34~35.

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西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

中国科学院兰州地质研究所

作者简介:
张晓宝男 36岁助理研究员沉积学

收稿日期: 1994-02-16
刊出日期: 1994-12-10

中图分类号: P588.2

关键词:

浊流 /

牵引流 /

波痕

摘要: 西秦岭上三叠统为一套半深海环境中形成的陆源碎屑浊积岩系，于该该积岩系中发现了大量的波痕。本文详细研究了这些波痕的形态特征及其与鲍马尾序和浊积岩相组合的关系。研究结果表明这些波痕是浊流演化过程中转化而来的牵引流作用于底部床沙形成的。

English Abstract

A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

lanzhou Institute of Geololgy, Chinese Academy of Sciences, 730000

Received Date: 1994-02-16
Publish Date: 1994-12-10

Keywords:

Abstract: For a long time, ripple marks were often regarded as one of sedimentary indicators of shallow water, but large quantities of them were also found in bathyal terrigenous elastic turbidites of Upper Triassic of west Qinling Mts. The ripple marks characterize that(1)they occour on the surface of T_c of Bouma sequence, which means that they were formed by tractive currents derived from turbidity flows, ( 2 ) they exist in the lobe facies associations of seafloor fan sequences, which indicates that the most favourable hydrodynamic }rtditions to form them appeared in outer fans,(3)they are all symmetrical，which shows that tractfve currents to form them were unidirectional, ( 4 ) They are smal l-scale，which proves that the veIocIty of tractive currents and the grain size of bottom bed sands varied in a certain extend,(5)their wavelengths and heights are directly proportional to the thickness of turbidites, which means that the strength of tractive currents was controlled by the scale and strength of turbidity flows, (6)the shapes of wave crests and troughs are smooth and the shapes of ripple ridges are regularly changeable , ( 7 ) their shapes and scales are closely related with those of ripple laminations in T_c intervals of Bouma sequences, which reflects that they were two forms of expression produced by the same tractive currents,(8 ) The flow directions determined by ripple marks are consistent with those determined by bottom marks,which reflects that the flow directions of tractive currents were controlled by those of turbidity flows. The characteristics above reflect that ripple marks occoured not only in shallow-water enviroments but also in deep water enviroments.

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

引用本文:

张晓宝, 方国庆, 何海清. 西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨[J]. 沉积学报, 1994, 12(4): 124-131.

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西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

作者简介:
张晓宝男 36岁助理研究员沉积学

计量

A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

计量

目录

西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

中国科学院兰州地质研究所

作者简介:
张晓宝男 36岁助理研究员沉积学

English Abstract

A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

lanzhou Institute of Geololgy, Chinese Academy of Sciences, 730000

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西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

作者简介: 张晓宝 男 36岁 助理研究员 沉积学

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A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

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出版历程

目录

西秦岭上三叠统浊积岩系中波痕的主要特征及其成因探讨

中国科学院兰州地质研究所

作者简介: 张晓宝 男 36岁 助理研究员 沉积学

English Abstract

A Discussion on Main Characteristics and Origin of the Ripple Marks of Upper Triassic Turbidites in west Qinling Mts.

lanzhou Institute of Geololgy, Chinese Academy of Sciences, 730000

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
张晓宝男 36岁助理研究员沉积学

作者简介:
张晓宝男 36岁助理研究员沉积学