Application of Tectonic Facies in Geological Mapping in East Kunlun Orogenic Belt
-
摘要: 不同的造山带是由不同的大地构造相单元组合而成, 大地构造相的划分揭示了造山带的基本框架和形成演化的规律.在对东昆仑造山带1∶2 5万冬给措纳湖幅地质填图中, 以时间演化和大地构造背景为主线, 根据不同演化阶段、不同部位出现的构造古地理单元、盆地类型和物质建造类型, 对填图区大地构造相进行了较精细深入划分, 共划分出七大相类、2 1种相, 如扩张洋脊相、分支(扩张) 海槽相、碳酸盐岩海山相、碳酸盐岩台地相、深海平原相、大陆碎块相、前陆盆地相和磨拉石盆地相等, 编制了1∶2 5万冬给措纳湖幅大地构造相图和造山作用过程与大地构造相演变图.大地构造相在地质填图中的应用进一步深化了造山带填图中的地层单元空间配置关系和盆地沉积充填序列的研究, 较全面细致地揭示了东昆仑造山带东段造山带形成、物质组成及演化过程Abstract: Different orogenic belts are composed of different tectonic facies units. The division of tectonic facies reveals the basin skeleton and the evolution rules of an orogenic belt. In 1∶250 000 geological mapping of the Donggi Conag Hu area in the East Kunlun orogenic belt, considering the timing evolution and tectonic setting as the main clues, and according to the tectono-paleogeography, basin type and matter construction type in different evolution stages, we divide the tectonic facies into seven big facies including 21 small facies, such as extensional oceanic ridge facies, offset (extensional) trough facies, carbonate seamount facies, carbonate platform facies, abyssal plain facies, continental sliver facies, foreland basin facies, molasses basin facies and so on. From this research we have produced a 1∶250 000 tectonic facies diagram of the Donggi Conag Hu area, and diagrams which display the orogenic processes and tectonic facies evolution. The application of tectonic facies in geological mapping deepens the study of the spatial relation of strata units and basin filling sequences during orogenic mapping, and we reveal the forming, substance composition and evolution processes of orogenic belts in the east part of the East Kunlun orogenic belt in detail.
-
Key words:
- tectonic facies /
- orogenic belt /
- East Kunlun area /
- geological mapping
-
图 1 东昆仑造山带东段冬给措纳湖地区大地构造相划分
Fig. 1. Division of tectonic facies in Donggi Conag Hu area of east part of East Kunlun orogenic belt
图 2 东昆仑造山带东段冬给措纳湖地区大地构造相图(图 1为该图的图例)
Fig. 2. Tectonic facies map in Donggi Conag Hu area of east part of East Kunlun orogenic belt
表 1 造山带区1∶250 000区域地质调查大地构造相划分及其特征简述
Table 1. Division of tectonic facies and their characteristics in orogenic belt
-
Bailey, R.H., Skehan, J.W., Dreier, R.B., et al., 1989. Olistostromes of the Avalonian terrane of south-eastern New England. In: Horton, J.W. Jr., ed., Melanges and olistostromes of the U.S. Appalachians. Geological Society of America Special Paper, 228: 93-112. Hsu, K.J., 1991. The concept of tectonic facies. Bulletin of Technique University Istanbul, 44(1-2): 25-42. Hsu, K.J., Sun S., Wang Q.C., et al., 1998. Tectonic facies map of China(1∶ 4 000 000). Science Press, Beijing(in Chinese and English). Roberton, A.H.F., 1994. Role of the tectonic facies concept in orogenic analysis and its application to Tethys in the eastern Mediterranean region. Earth Science Reviews, (37): 139-213. Silver, E.A., Beutner, E.C., 1980. Melanges. Geology, 8: 32-34. Wang, N.W., Guo, X.P., Liu, Y., 1994. Brief introduction on non-Smith stratigraphy. Geological Review, 40(5): 1-482(in Chinese with English abstract). Wang, Y.B., Zhang, K.X., Gong, Y.M., et al., 1998. The discovery of Early Permian reef belt in east Kunlun and its significance. Chinese Science Bulletin, 43(11): 947-950. doi: 10.1007/BF02884620 Yin, H.F., Zhang, K.X., Wang, G.C., et al., 1998. Non-Walson cycle and non-Smith method: Theory and method in studying China orogenic belts. Regional Geology of China, (Suppl. ): 1-9(in Chinese). Yin, H.F., Zhang, K.X., Feng, Q.L., 2004. The archipelagic ocean system of eastern Eurasian Tethys. Acta Geologica Sinica, 78(1): 230-236. Yumul, G.P., 1996. Varying mantle sources of supra-subduction zone ophiolite: REE evidence from the Zambales ophiolite complex, Luzon, Philippines. Tectonophysics, 262: 243-262. doi: 10.1016/0040-1951(96)00013-3 Zhang, K.X., Chen, N.S., Wang, Y.B., et al., 1997. A preliminary research on the sequence reconstruction of non-Smith stratigraphy in Eastern Kunlun orogenic belt. Earth Science—Journal of China University of Geosciences, 22 (4): 343-346(in Chinese with English abstract). Zhang, K.X., Huang, J.C., Yin, H.F., et al., 2000. Application of radiolarians and other fossils in non-Smith strata—Exemplified by the A' nyemaqen mélange belt in East Kunlun Mts. Science in China(Series D), 43(4): 364-374. doi: 10.1007/BF02959447 Zhang, K.X., Yin, H.F., Zhu, Y.H., et al., 2001. The theory, method and practice to geological mapping in melange district of orogenic belts. China University of Geosciences Press, Wuhan, 1-165(in Chinese). Zhang, K.X., Yin, H.F., Zhu, Y.H., et al., 2004. Smith strata and non-Smith strata. Journal of China University of Geosciences, 15(3): 253-261. 王乃文, 郭宪璞, 刘羽, 1994. 非史密斯地层学简介. 地质论评, 40(5): 1-482. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP199405010.htm 许靖华, 孙枢, 王清晨, 等, 1998. 中国大地构造相图(1∶ 4 000 000). 北京: 科学出版社. 殷鸿福, 张克信, 王国灿, 等, 1998. 非威尔逊旋回与非史密斯方法———中国造山带研究理论与方法. 中国区域地质, (增刊): 1-9. 张克信, 陈能松, 王永标, 等, 1997. 东昆仑造山带非史密斯地层序列重建方法初探. 地球科学———中国地质大学学报, 22(4): 343-346. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX704.001.htm 张克信, 殷鸿福, 朱云海, 等, 2001. 造山带混杂岩区地质填图理论、方法与实践———以东昆仑造山带为例. 武汉: 中国地质大学出版社, 1-165. -
下载:
点击查看大图
图(2) / 表(1)
计量
- 文章访问数: 4238
- HTML全文浏览量: 516
- PDF下载量: 19
- 被引次数: 0
