Interpretation of Gloria Sidescan Sonar Imagery for the Coriolis Troughs and the New Hebrides Back-arc
نویسندگان
چکیده
........................................................................................................................ 5 ACKNOWLEDGEMENTS ....................................................................................................... 6 INTRODUCTION ................................................................................................................... 7 GEOLOGICALSETTING .......................................................................................................... 7 GEOLOGICAL AND TECTONIC EVOLUTION OF THE NEW HEBRIDES ARC ............ 10 THE BACK-ARC TROUGHS OF THE NEW HEBRIDES ARC ................................................. 10 ON-BOARD DATA ACQUISITION AND PROCESSING ....................................................... 11 GLORIA ..................................................................................................................... 11 Seabeam ................................................................................................................... 13 High Resolution Profiler (HRP) ............................................................................... 14 Single Channel Seismic Reflection Profiler (SRP) ................................................... 14 Navigation .................................................................................................................. 14 POST-CRUISE DATA PROCESSING AND COMPILATION .................................................. 15 Navigation ................................................................................................................. 15 Bathymetry .............................................................................................................. 15 GLORIA .................................................................................................................... 16 BATHYMETRY, MORPHOLOGY AND INTERPRETATION OF THE GLORIA IMAGERY .............. 16 The Futuna Trough ............................................................................................ 16 Erromango Basin .................................................................................................. 18 The Vate Trough ................................................................................................... 19 The Back-arc region between 17% and 15's ............................................................ 20 PETROLOGICAL AND GEOCHRONOLOGICAL DATA ........................................................ 22 ECONOMIC IMPLICATIONS AND SUGGESTIONS FOR FURTHER WORK ............................. 23 CONCLUSIONS ..................................................................................................................... 24 REFERENCES ...................................................................................................................... 38 [TR139Price, Maillet & Johnson]
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