Sismicidad de la zona de fracturas de Clarión y sus posibles implicaciones tectónicas

Article Sidebar

PDF (Español (España))
Published: Apr 1, 1994
DOI: https://doi.org/10.22201/igeof.00167169p.1994.33.2.469
Keywords:
Seismicity, Clarion Fractures, Mexico

Main Article Content

Jaime Yamamoto
Universidad Nacional Autónoma de México, Instituto de Geofísica, Ciudad Universitaria, Delegación Coyoacán, 04510, Mexico City, México

Abstract

A sequence of earthquakes (3.4 ~ Ms ~6.4) occurred from September 15th, 1984 to May 28th, 1986 near the eastern end of the Clarion fracture zone, 30 km to the NNE of Clarion Island in the Revillagigedo Archipelago. The seismic events were located by the ISC between 18.9°-20.4° Nand 115.1° -116.9°W. This sequence represents the largest seismic activity during the period 1900-1989 in a region believed to be aseismic. Fault plane solutions for the six larger events were studied using first arrivals. All solutions suggest norma/faulting with two possible fault planes, one oriented NE-SW with an small right lateral component and the other almost E-W and left lateral component. The first solution agrees with the trend ofthe epicenter distribution; however, it is difficult to reconcile with the morphology of the ocean floor since it is oblique to the general trend of the Clarion fracture zone. Several possible explanations of the seismic sequence are discussed.

Article Details

How to Cite
Yamamoto, J. (1994). Sismicidad de la zona de fracturas de Clarión y sus posibles implicaciones tectónicas. Geofisica Internacional, 33(2), 199–209. https://doi.org/10.22201/igeof.00167169p.1994.33.2.469
Issue
Vol. 33 No. 2 (1994): April 1, 1994
Section
Article
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

References

BRYAN, W. B, 1966. History and mechanism of eruption of Soda-rhyolite and Alkali Basalt, Socorro Island, Mexico. Bull. Volcanol., 29, 453-480. DOI: https://doi.org/10.1007/BF02597169

GUTENBERG, B. and C. F. RICHTER, 1954. Seismicity of the Earth. Princeton Univ. Press. pp. 310. Princeton, New Jersey.

KLITGORD, K. D. and J. MAMMERICKX, 1982. Northern East Pacific rise: Magnetic anomaly and bathymetric framework. J. Geophys. Res., 87, 625-675. DOI: https://doi.org/10.1029/JB087iB08p06725

LILWALL, R. C., 1982. Seismicity of the Oceanic Rifts. In: Continental and Oceanic Rifts. Palmason, G. (Editor). Geodynamic Series. V. 8, 63-80, AGU, Washington, D. C. p. 63-80. DOI: https://doi.org/10.1029/GD008p0063

LUHR, J. F., S. A. NELSON, J. F. ALLAN and I. S. E. CARMICHAEL, 1985. Active rifting in southwestern Mexico: Manifestations of an incipient eastward spreading-ridge jump. Geology,13, 54-57. DOI: https://doi.org/10.1130/0091-7613(1985)13<54:ARISMM>2.0.CO;2

MAMMERICKX, J. and D. SANDWELL, 1986. Rifting of Old Oceanic Lithosphere. J. Geophys. Res., 91, B2, 1975-1988. DOI: https://doi.org/10.1029/JB091iB02p01975

MAMMERICKX, J., D. F. NEAR and R. L. TYCE., 1988. The Mathematician Paleoplate. J. Geophys. Res., 93, B4, 3025-3040. DOI: https://doi.org/10.1029/JB093iB04p03025

MENARD, H. W., 1966. Fracture zones and offests of the East Pacific Rise. J. Geophys. Res., 71, 682-685. DOI: https://doi.org/10.1029/JZ071i002p00682

MORGAN, P. and B. H. BAKER (ed), 1983. Processes of Continental Rifting. Tectonophysics, 94, pp. 680, Special Issue. DOI: https://doi.org/10.1016/0040-1951(83)90005-7

NIETO-OBREGON, J., J. URRUTIA-FUCUGAUCHI, E. CABRAL-CANO and A. GUZMAN DE LA CAMPA, 1992. Listric Faulting and Continental Rifting in Western Mexico. A Paleomagnetic and Structural Study. Tectonophysics, 208, 365-376. DOI: https://doi.org/10.1016/0040-1951(92)90435-9

RICHARDS, A. F., 1959. Geology of the Islas Revillagigedo, Mexico, 1. Birth and Development of Volcán Bárcena, Islas San Benedicto, Bull. Volcanologique, Serie 2, 22, 73-123. DOI: https://doi.org/10.1007/BF02596580

SCLATER, J. G., R. N. ANDERSON and M. L. BELL, 1971. Elevation of Ridges and evolution of the Central Eastern Pacific, J. Geophys. Res., 76, 7888-78-915. DOI: https://doi.org/10.1029/JB076i032p07888

SYKES, L. R., (1967). Mechanism of Earthquakes and Nature of Faulting on the Mid-Oceanic Ridges. J. Geophys. Res., 72, 2131-2153. DOI: https://doi.org/10.1029/JZ072i008p02131

URRUTIA-FUCUGAUCHI, J. and R. S. MOLINA-GARZA, 1992. Gravity Modelling of Regional Crustal and Upper Mantle Structure of the Guerrero Terrane-1. Colima Graben and Southern Sierra Madre Occidental, Western Mexico. Geofísica Internacional, 31, 443-466. DOI: https://doi.org/10.22201/igeof.00167169p.1992.31.4.1370

WIENS, D. A. and E. A. OKAL, 1987. Tensional Intraplate seismicity in the Eastcentral Pacific. Phys. of the Earth Planet. Interiors, 49, 264-282. DOI: https://doi.org/10.1016/0031-9201(87)90029-X

WYSESSION, M. E., E. A. OKAL and K. L. MILLER, 1991. Interplate Seismicity of the Pacific Basin, 1913-1988. PAGEOPH, 135, 261-359. DOI: https://doi.org/10.1007/BF00880241