Auxiliary Material for Paper 2008gc002009

Seismic evidence for large-scale compositional heterogeneity of oceanic core complexes
J. Pablo Canales and Brian E. Tucholke
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, MS 24, 360 Woods Hole Road, Woods Hole, Massachusetts 02543, USA

Min Xu
Massachusetts Institute of Technology–Woods Hole Oceanographic Institution Joint Program, Woods Hole, Massachusetts 02543, USA

John A. Collins and David L. DuBois
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, MS 24, 360 Woods Hole Road, Woods Hole, Massachusetts 02543, USA

Canales, J. P., B. E. Tucholke, M. Xu, J. A. Collins, and D. L. DuBois (2008), Seismic evidence for large-scale compositional heterogeneity of oceanic core complexes, Geochem. Geophys. Geosyst., 9, Q08002, doi:10.1029/2008GC002009.

Introduction

Auxiliary material for this article contains two animations (MPEG-4 format) created with FledermausTM software by IVS 3D.  The animations show three-dimensional renditions of seafloor topography for the Kane and Atlantis OCCs constructed from multibeam bathymetry data as in Figures 1 and 12, and subseafloor seismic structure as depicted in Figure 6b.

2008gc002009-ms01.mov:  Three-dimensional view of Atlantis OCC. Black lines locate seismic profiles, red lines are possible breakaways of the detachment fault, yellow line locates termination of the fault, and blue line shows approximately the extent of the smooth corrugated detachment surface.  Yellow cylinder locates IODP Hole U1309D, blue diamond locates the Lost City Hydrothermal field, and green lines are Alvin dive tracks that reported massive exposures of serpentinized peridotite [Karson et al., 2006].  The movie spins Atlantis OCC in a 360° circle.  As the features rotate, the topography of the quadrant closest to the viewer becomes semitransparent, revealing the subsurface seismic structure (displayed as in Figure 6b).

2008gc002009-ms02.mov:  Three-dimensional view of Kane OCC. Black lines locate seismic profiles, red lines are the breakaway of the detachment fault, yellow line locates termination of the fault, and orange line shows approximately the extent of the smooth corrugated detachment surface.  Light green lines are Jason dive tracks that reported massive exposures of serpentinized peridotite [Dick et al., 2008].  The movie spins Kane OCC in a 360° circle.  As the features rotate, the topography of the quadrant closest to the viewer becomes semitransparent, revealing the subsurface seismic structure (displayed as in Figure 6b).