秦岭造山带泥盆纪的沉积体系与古地理格局演化

doi:10.7605/gdlxb.1999.01.003

摘要
图/表
参考文献
相关文章 (15)
点击分布统计
下载分布统计

全文: PDF (0 KB)
输出: BibTeX | EndNote (RIS) 背景资料

摘要

秦岭造山带以商丹断裂带为界分为南秦岭和北秦岭。南秦岭在早古生代是扬子板块的被动大陆边缘，在志留纪末曾因垂向隆升变为古陆。因其南缘长期处于地幔上涌的构造薄弱带，所以到泥盆纪首先从这里开始扩张，并逐渐演化成有限洋盆，与扬子板块分离，成为独立的板块，内部也因拉张形成裂陷盆地与块断隆起相间的环境格局。其自南而北依次为安康古陆→旬阳-镇安盆地→小磨岭古陆→刘岭盆地。在盆地内堆积了从陆相到海相，从浅水到深水的各种沉积体系，组成向上变细和变深的充填序列。而在北侧，该板块仍在向华北板块下面俯冲。北秦岭南缘的弧前沉积体系记录了这种俯冲作用的演化。这种与早古生代十分不同的古地理格局标志秦岭造山带已进入了新的演化阶段。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

Abstract：

During the Early Palaeozoic, the South Qinling belonged to the passive continental margin of the Yangtze Plate.It changed to ancient land due to vertical movement in the end of the Silurian. Because its southern margin located in the structure weak zone caused by mantle bugle for a long time , during the Devonian extension first began to form here and a restricted oceanic basin was formed gradually while South Qinling separated from the Yangtze Plate and changed into an independent plate.The environmental framework that faultsubsided basins alternated with blockfaulted uplifts was formed by extension. They are Ankang Uplift→XunyangZhenan Basin→Xiaomoling Uplift→Liuling Basin from south to north, respectively. These basins were generally filled with upward fining and deepening sedimentary sequence that comprises nonmarine to marine,shallow marine to deep marine depositional systems. At the same time,this plate still subducted beneath the North China Plate. The forearc deposition system at the southern margin of North Qinling indirectly recorded this evolution of subduction. The much different palaeogeographic framework from the Early Palaeozoic indicates that Qinling orogenic belt has entered a new evolutionary stage.

出版日期: 1999-02-01

基金资助:

国家自然科学基金资助项目(49290100)

作者简介: 梅志超，男，1937年生，1960年毕业于西北大学，现为西北大学地质系教授，主要从事沉积地质学的教学与科研工作

引用本文:

. 秦岭造山带泥盆纪的沉积体系与古地理格局演化[J]. 古地理学报, 1999, 1(1): 32-40.

. DEVONIAN DEPOSITIONAL SYSTEM AND PALAEOGEOGRAPHIC EVOLUTION OF QINLING OROGENIC BELMei ZhichaoMeng QingrenCui ZhilinQu Hongjun[J]. JOPC, 1999, 1(1): 32-40.

链接本文:

http://journal09.magtechjournal.com/gdlxb/CN/10.7605/gdlxb.1999.01.003 或 http://journal09.magtechjournal.com/gdlxb/CN/Y1999/V1/I1/32

1张国伟，梅志超，李桃红. 秦岭造山带南部被动大陆边缘.见:张国伟等，主编.秦岭造山带的形成及演化.西安：西北大学出版社，1988.86～98
2王清晨,孙枢,李继亮,周达,许靖华,张国伟.秦岭大地构造演化.地质科学，1989，24(2)：129～142
3李晋僧,曹宣铎,杨家禄.秦岭显生宙古海盆沉积和演化史.北京：地质出版社，1994，166～185
4张国伟,孟庆任,赖绍聪.秦岭造山带的结构构造.中国科学，B辑，1995，25(9)：999～1 003
5孟庆任,于在平,梅志超.北秦岭南缘弧前盆地沉积作用及盆地发展.地质科学，1997，32(2)：136～145
6于在平,孙勇,张成立,Altemberger U. 秦岭商丹缝合带变质砂岩地球化学特征及构造环境探讨.地质论评，1991，37(6)：492～507
7梅志超,崔智林,孟庆任,屈红军.秦岭早古生代沉积作用与构造演化.高校地质学报，1995，1(2)：29～36
8Mattauer M, Matte P, Malavierille J, Tapponnier D, Maluski H, Xu Z Q, Lu L Y, Tang Y Q. Tectonics of the Qinling belt: buildup and evolution of eastern Asia. Nature,1985,317:496～500
9张国伟,梅志超,周鼎武,孙勇,于在平.秦岭造山带的形成及其演化.见:张国伟等，主编.秦岭造山带的形成及其演化.西安：西北大学出版社，1988.1～16
10张国伟,孙勇,于在平,薛峰.北秦岭活动大陆边缘.见:张国伟等，主编.秦岭造山带的形成及其演化.西安：西北大学出版社，1988.48～64
11孟庆任,梅志超,于在平,张国伟.南秦岭北缘镇安盆地晚泥盆世浊积岩系及盆地发展.沉积学报，1996，14卷增刊：25～32
12Mutti E, Ricci F. Turbidites from the northern Appenines:Introduction to facies analysis.Int.Geol.Rev.,1978,20：125～166
13Walker R G, Duke W L, Leckie D A. Discussion of hummocky stratification:significance of its variable bedding sequence.Geol.Soc.Amer.,1983,99:1 245～1 249
14Heller P L, Dickinson W R. Submarine ramp facies model for deltafed sandrich turbidite systems.Bull.Am.Ass.Petrol.Geol.,1985,69:960～975
15孟庆任,梅志超,于在平,崔智林.秦岭板块北缘一个消失了的泥盆纪古陆.科学通报，1995，40(30)：254～256
16Dickinson W R, Selly D R. Structure and stratigraphy of forearc regions.Bull. Am.Ass.Petrol.Geol.,1979,63:2～31
17黄月华,任有祥,夏林圻,夏祖春,张诚.北大巴山早古生代双模式火山岩套：以高滩辉绿岩和蒿坪粗面岩为例.岩石学报，1992，8(3)：243～256
18李石.鄂北地区碱性岩的时代及成因.岩石学报，1991,7(3)：27～36
19Wilson M. Magmatism and geodynamics of basin formation.Sediment.Geol.,1993,86:5～29
20Dunbar J A, Saweyer D S. Continental rifting at preexisting lithospheric weakness.Nature,1993,333:450～452
21Jackson J, Mckenzie D. The geometrical evolution of normal fault systems.J.Struct.Geol.,1983，5:471～482