Jasper Seamount is a submarine volcano in the Fieberling-Guadalupe seamount trail, located off the coast of Baja California, Mexico. It rises from the 4000-m-deep seafloor to a summit depth of 700 m (Figure 1). Detailed geophysical, geochemical, and geological studies there provide an in-depth geological understanding of a seamount that approaches our knowledge of subaerial volcanoes. Active-source seismic experiments at Jasper Seamount resulted in the first seismic velocity models of an intraplate seamount (Hammer et al., 1994). Marine gravity and magnetics surveys, combined with analyses of the physical properties, geochemistry, and geochronology of dredge samples, enabled scientists to develop a detailed model of its internal structure (Gee et al., 1988, 1991; Pringle et al., 1991).

Konter, J.G., H. Staudigel, and J. Gee. 2010. Spotlight 2: Jasper Seamount. Oceanography 23(1):40–41, https://doi.org/10.5670/oceanog.2010.74.

Gee, J., L. Tauxe, J.A. Hildebrand, H. Staudigel, and P. Lonsdale. 1988. Nonuniform magnetization of Jasper Seamount. Journal of Geophysical Research 93:12,159–12,175.
1. Gee, J., H. Staudigel, and J.H. Natland. 1991. Geology and petrology of Jasper Seamount. Journal of Geophysical Research 96:4,083–4,105.
2. Hammer P.T.C, L.M. Dorman, J.A. Hildebrand, and B.D. Cornuelle. 1994. Jasper Seamount structure: Seafloor seismic refraction tomography. Journal of Geophysical Research 99:6,731–6,752.
3. Konter, J.G., H. Staudigel, J. Blichert-Toft, B.B. Hanan, M. Polvé, G.R. Davies, N. Shimizu, and P. Schiffman. 2009. Geochemical stages at Jasper Seamount and the origin of intraplate volcanoes. Geochemistry, Geophysics, Geosystems 10, Q02001, https://doi.org/10.1029/2008GC002236.
4. Pringle, M.S., H. Staudigel, and J. Gee. 1991. Jasper Seamount: Seven million years of volcanism. Geology 19:364–368.
5. Wessel, P., D.T. Sandwell, and S.-S. Kim. 2010. The global seamount census. Oceanography 23(1):24–33.

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