| 东秦岭板块比较俯冲学 |
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| 引用本文： | 高长林,秦德余,吉让寿,殷勇.东秦岭板块比较俯冲学[J].石家庄经济学院学报,1994(1). |
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| 作者姓名： | 高长林 秦德余 吉让寿 殷勇 |
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| 作者单位： | 地质矿产部石油地质中心实验室!无锡 |
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| 摘 要： | 本文初次提出:地壳结构,俯冲速度、岛弧区火山岩特征和矿床特征及弧后区特征等五个方面是古生代板块与中新生代板块俯冲带之间相关关系研究的主要内容。在古生代古秦岭海洋板块向中朝大陆板块俯冲,丹风古岛弧区地壳厚度为22.5km,消减带的深度为166km,板块的闭合速度为4.2cm/a,在古岛弧区产有一套钙碱性的火山岩和斑岩铜钼矿床,弧后区较大,局部已有洋壳形成,为具一定规模的边缘海盆地,为低应力型俯冲带。
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| 关 键 词： | 比较俯冲学 古生代 板块构造 东秦岭 |
Comparative Subductology in the Eastern Qinling |
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| Gao Changlin Qin Deyu Ji Rangshou Yin Yong.Comparative Subductology in the Eastern Qinling[J].Journal of Shijiazhuang University of Economics,1994(1). |
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| Authors: | Gao Changlin Qin Deyu Ji Rangshou Yin Yong |
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| Abstract: | This paper puts forward that crustal architecture, velocity of subduction, characteristics of volcanic rocks and ore deposits in the Palaeo-island arc as well as back arc basin are the main respects in studying the relationship of the subducted zones between the Palaeozoic and Mesozoic or Cenozoic. Due to the Palaeo-Qinling oceanic plate subducted into the Sino-Korean plate in Palaeozoic Era, an active margin with trencharc-back arc system is formed. The crustal thinckness of Palaeo-island in Danfeng is 22.5km. The depth of subduction zone is 166km. the closing velocity of plates is 4.2cm / a.Calc-alkaline volcanic suite and porphyry copper deposit are formed in the Palaeo-island arc. The back arc basin is large, It is a low stress type. |
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| Keywords: | comparative subductology Palaeozoic Era plate tectonics Qinling |
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