收稿日期: 2003-07-25
修回日期: 2003-09-18
网络出版日期: 2004-05-10
基金资助
国家自然科学基金项目(40174027;40074022);“973”项目(G20000467401)联合资助
Thermal Structure of Central Basin in South China Sea and Their Geodynamic Implications
Received date: 2003-07-25
Revised date: 2003-09-18
Online published: 2004-05-10
张健 , 石耀霖 . 南海中央海盆热结构及其地球动力学意义[J]. 中国科学院大学学报, 2004 , 21(3) : 407 -412 . DOI: 10.7523/j.issn.2095-6134.2004.3.020
Based on the terrestrial heat flow and crustal structure data, this paper calculates the temperature and the thermal structure of lithosphere in the South China Sea. The result shows that there is a larger change of temperature along vertical direction in the central basin, which is caused by the uplifting of mantle. Mantle uplifting in local areas would cause seabed outspread in multi periods and multi aspects.As a result, different areas of heat flow value in the central basin are formed. The percentage of heat flow from mantle is bigger than 80% in terrestrial heat flow, whereas the percentage of lower crustal heat flow is smaller than 20% in terrestrial heat flow. We argue that two factors might produce the thinning of layer 3 in central basin crust. One factor is the lower original crustal temperature, the other is the slowly cooling process after late heating event.
[1] 金庆焕. 南海地质与油气资源. 北京:地质出版社,1989.1-417
[2] 刘昭蜀. 南海地质. 北京:科学出版社,2002.1-502
[3] 中国科学院南海海洋研究所海洋地质构造研究室. 南海地质构造与陆缘扩张. 北京:科学出版社, 1988.1-398
[4] 苏达权. 南海中、北部重力异常解释. 石油地球物理勘探, 1982. (4):24-28
[5] 张健, 汪集. 南海北部陆缘带构造扩张的深部地球动力学特征. 中国科学(D 辑), 2000, 30(6): 561-567
[6] 刘昭蜀,陈雪. 南海中央海盆热流值的分布特征及年代分析. 地质科学, 1987, (2):112-121
[7] 渡部晖彦等. 海洋地球物理. 陆书玉译. 北京:科学出版社,1980
[8] 地质矿产部广州海洋地质调查局. 广州-巴拉望地学断面. 北京:地质出版社,1989
[9] 赵平, 汪集,汪缉安,罗定贵. 中国东南地区岩石生热率分布特征. 岩石学报, 1995,11(1):292-305
[10] Taylor B, Hayes D E. The tectonic evolution of the South China Sea Basin. In: DE Hayes. (eds.) The tectonic and geological evolution of Southeast Asian seas and islands, AGU, Geophysical Monograph,1980.23:89-104
[11] 陈雪,林进峰. 南海中央海盆岩石圈厚度和地壳年代的分析. 海洋学报,1997,19(2):71-84
[12] 姚伯初. 南海西南海盆的岩石圈张裂模式探讨. 海洋地质与第四纪地质, 1999,19(2):37-48
[13] 姚伯初. 南海西南海盆的海底扩张及其构造意义. 南海地质研究, 1997,(9):20-36
[14] 吴能友,曾维军,杜德莉. 南海区域岩石圈的壳-幔耦合关系和纵向演化. 海洋地质与第四纪地质,1999,19(1):31-38
/
| 〈 |
|
〉 |
