中西太平洋海山区的岩石圈有效弹性厚度及其地质意义

赵俐红; 金翔龙; 高金耀; 李家彪; 初凤友

doi:10.3799/dqkx.2010.078

Volume 35 Issue 4

Jul. 2010

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2010 > 35(4): 637-644

ZHAO Li-hong, JIN Xiang-long, GAO Jin-yao, LI Jia-biao, CHU Feng-you, 2010. The Effective Elastic Thickness of Lithosphere in the Mid-West Pacific and Its Geological Significance. Earth Science, 35(4): 637-644. doi: 10.3799/dqkx.2010.078

Citation:

ZHAO Li-hong, JIN Xiang-long, GAO Jin-yao, LI Jia-biao, CHU Feng-you, 2010. The Effective Elastic Thickness of Lithosphere in the Mid-West Pacific and Its Geological Significance. Earth Science, 35(4): 637-644. doi: 10.3799/dqkx.2010.078

Citation:

ZHAO Li-hong, JIN Xiang-long, GAO Jin-yao, LI Jia-biao, CHU Feng-you, 2010. The Effective Elastic Thickness of Lithosphere in the Mid-West Pacific and Its Geological Significance. Earth Science, 35(4): 637-644. doi: 10.3799/dqkx.2010.078

PDF( 339 KB)

The Effective Elastic Thickness of Lithosphere in the Mid-West Pacific and Its Geological Significance

doi: 10.3799/dqkx.2010.078

1.
Key Laboratory of Submarine Geosciences, Second Institute of Oceanography of State Oceanic Administration, Hangzhou 310012, China
2.
College of Geological Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China

Received Date: 2009-10-20
Publish Date: 2010-07-01

Abstract

Abstract

The Mid-West Pacific region is featured with the oldest oceanic crust, the most complicated magnetic anomaly lineation, the densest seamounts, the most peculiar geological feature and the strongest tectonic activity. To research tectonic genesis of these intraplate seamounts, this paper calculates the effective elastic thickness of the lithosphere (T_e) with the elastic plate flexure based on the plate tectonic theory in the Mid-West Pacific. As a whole, T_e slowly drops from the northwest part to the southeast part in the region. T_e of the MST is higher in the middle of the trail than that in the north and the south parts. T_e of the MPM is higher in the west part of the mountains than that in the east part. Furthermore, T_e of these two typical areas is close to that of the present French Polynesia region. Thus, these seamounts were formed by the large volcanism which was produced by several hotspots during Cretaceous in the present French Polynesia region. And then these seamounts underwent some tectonic activities.
- Mid-West Pacific,
- elastic plate flexure,
- effective elastic thickness,
- tectonics,
- geophysics

FullText(HTML)

References(31)

References

Bechtel, T.D., Forsyth, D.W., Sharpton, V.L., et al., 1990. Variations in effective elastic thickness of the North American lithosphere. Nature, 343: 636-638. doi: 10.1038/343636a0

Calmant, S., 1987. The elastic thickness of the lithosphere in the Pacific Ocean. Earth and Planetary Science Letters, 85: 277-288. doi: 10.1016/0012-821X(87)90038-0

Calmant, S., Cazenave, A., 1987. Anormalous elastic thickness of the oceanic lithosphere in the South-Central Pacific. Nature, 328: 236-238. doi: 10.1038/328236a0

Calmant, S., Francheteau, J., Cazenave, A., 1990. Elastic layer thickening with age of the oceanic lithosphere: a tool for prediction of the age of volcanoes or oceanic crust. Geophysical Journal International, 100 (1): 59-67. doi: 10.1111/j.1365-246X.1990.tb04567.x

Filmer, P.E., McNutt, M.K., Wolfe, C.J., 1993. Elastic thickness of the lithosphere in the Marquesas and Society Islands. J. Geophys. Res., 98(B11): 19565-19577. doi: 10.1029/93JB01720

Forsyth, D.W., 1985. Subsurface loading and estimates of the flexural rigidity of continental lithosphere. J. Geophys. Res., 90(B14): 12623-12632. doi: 10.1029/JB090iB14p12623

Fu, Y.T., Li, J.L., Zhou, H., et al., 2000. Comments on the effective elastic thickness of continental lithosphere. Geological Review, 46(2): 149-159 (in Chinese with English abstract). http://gji.oxfordjournals.org/cgi/ijlink?linkType=ABST&journalCode=geology&resid=28/6/495

Goodwillie, A.M., Watts, A.B., 1993. An altimetric and bathymetric study of elastic thickness in the Central Pacific Ocean. Earth and Planetary Science Letters, 118(1-4): 311-326. doi: 10.1016/0012-821X(93)90175-9

Heezen, B.C., Matthews, J.L., Catalano, R., et al., 1973. Western Pacific guyots. Init. Rpts. DSDP, 20: 653-723.

Karner, G.D., Steckler, M.S., Thorne, J.A., 1983. Long-term thermo-mechanical properties of the continental lithosphere. Nature, 304: 250-253. doi: 10.1038/304250a0

Koppers, A.A.P., Staudigel, H., Wijbrans, J.R., et al., 1998. The Magellan seamounts trail: implications for Cretaceous hotspot volcanism and absolute Pacific plate motion. Earth and Planetary Science Letters, 163(1-4): 53-68. doi: 10.1016/S0012-821X(98)00175-7

Kruse, S.E., Liu, Z.J., Naar, D.F., et al., 1997. Effective elastic thickness of the lithosphere along the Easter seamount chain. J. Geophys. Res., 102(B12): 27305-27317. doi: 10.1029/97JB02158

McNutt, M.K., Fischer, K.M., 1987. The South Pacific superswell. In: Keating, B.H., Fryer, P., Batiza, R., et al., eds., Seamounts, islands, and atolls. Geophysical Monograph Series, American Geophysical Union, Washington, DC, 43: 25-43.

McNutt, M.K., Judge, A.V., 1990. The superswell and mantle dynamics beneath the South Pacific. Science, 248(4958): 969-975. doi: 10.1126/science.248.4958.969

Menard, H.W., 1964. Marine geology of the Pacific. McGraw-Hill, New York.

Menard, H.W., McNutt, M., 1982. Evidence for and consequences of thermal rejuvenation. J. Geophys. Res., 87(B10): 8570-8580. doi: 10.1029/JB087iB10p08570

Parsons, B., Sclater, J.G., 1977. An analysis of the variation of ocean floor bathymetry and heat flow with age. J. Geophys. Res., 82: 803-827. doi: 10.1029/JB082i005p00803

Smith, W.H.F., Staudigel, H., Watts, A.B., et al., 1989. The Magellan seamounts: Early Cretaceous record of the South Pacific isotopic and thermal anomaly. J. Geophys. Res., 94(B8): 10501-10523. doi: 10.1029/JB094iB08p10501

Walcott, R.I., 1970. Flexural rigidity, thickness, and viscosity of the lithosphere. J. Geophys. Res., 75(20): 3941-3954. doi: 10.1029/JB075i020p03941

Watts, A.B., 1978. An analysis of isostasy in the world's oceans: 1. Hawaiian-Emperor seamount chain. J. Geophys. Res., 83(B12): 5989-6004. doi: 10.1029/JB083iB12p05989

Watts, A.B., Bodine, J.H., Ribe, N.M., 1980. Observations of flexure and the geological evolution of the Pacific Ocean basin. Nature, 283: 532-537. doi: 10.1038/283532a0

Watts, A.B., Cochran, J.R., 1974. Gravity anomalies and flexure of the lithosphere along the Hawaiian-Emperor seamount chain. Geophys. J.R. Astr. Soc., 38(1): 119-141. doi: 10.1111/j.1365-246X.1974.tb04112.x

Watts, A.B., Karner, G.D., Steckler, M.S., 1982. Lithospheric flexure and the evolution of sedimentary basins. Philosophical Transactions of the Royal Society of London, Series A, Mathematical and Physical Sciences, 305(1489): 249-281. doi: 10.1098/rsta.1982.0036

Watts, A.B., Steckler, M.S., 1979. Subsidence and eustasy at the continental margin of eastern North America. In: Talwani, M., Hay, W., Ryan, W.B.F., eds., Deep sea drilling results in the Atlantic Ocean: continental margins and paleoenvironment. American Geophysical Union, Washington, DC, Maurice Ewing Series, (3): 218-234.

Wessel, P., 1993. A reexamination of the flexural deformation beneath the Hawaiian Islands. J. Geophys. Res., 98(B7): 12177-12190. doi: 10.1029/93JB00523

Wilson, P.A., Jenkyns, H.C., Elderfield, H., et al., 1998. The paradox of drowned carbonate platforms and the origin of Cretaceous Pacific guyots. Nature, 392: 889-894. doi: 10.1038/31865

Winterer, E.L., 1976. Bathymetry and regional tectonic setting of the line islands chain. In: Schlanger, S.O., Jackson, E.D., Boyce, R.E., et al., eds., Init. Repts of DSDP, 33: 731-747.

Yuan, B.Q., Yvette, H.P.D., Cheng, S.Y., et al., 2002. The estimation of the effective elastic thickness of the continental lithosphere and its geological significance. Acta Geoscientia Sinica, 23(3): 269-272 (in Chinese with English abstract). http://www.oalib.com/paper/1559456

Zuber, M.T., Bechtel, T.D., Forsyth D.W., 1989. Effective elastic thicknesses of the lithosphere and mechanisms of isostatic compensation in Australia. J. Geophys. Res., 94(B7): 9353-9367. doi: 10.1029/JB094iB07p09353

付永涛, 李继亮, 周辉, 等, 2000. 大陆岩石圈有效弹性厚度研究综述. 地质论评, 46(2): 149-159. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200002005.htm

袁炳强, Yvette, H.P.D., 程顺有, 等, 2002. 大陆岩石圈有效弹性厚度的计算及其地质意义. 地球学报, 23(3): 269-272. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB200203016.htm

Relative Articles

Supplements(0)

Cited By

Proportional views