Determination and Geological Significance of oft-com:office:smarttags" />
详细信息
- 责任者：Chen Gang (China University of Geosciences ; Beijing 100083 ; China) ; Zhu Zhixin
- 刊名：Xinjiang Geology
- 出版年：2010
- 卷期：28(3)
- 关键词：洋岛玄武岩 ; ocean-island basalts ; 天山 ; Tianshan Mountains
- 页码：p.236-241
- 图表：5 illus., 2 tables, 29 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
There is one set of ocean island volcanic rocks in Heiyin Mountains-Kule Lake oceanic basin of southern Tianshan, the rocks combination is alkali intermediate-basic pyroclastic rock and lava,petrogenetic age is Devonian-Early Carboniferous. And the petrochemistry characteristics of intermediate-basic lava is high K and Ti, there are depleted in HREE and enriched in LREE, characteristics of microelement is all elements is enriched except Y, Yb, it belongs to raise ocean island alkali basalt. It is show that southern Tianshan ocean basin forms new ocean crust sequentially in Devonian-Early Carboniferous era and has considerable size.