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Arc line
                 (a)
                                           Papuan Peninsula
                     5
                     0
                     -5

                     -15                                        DI               Trobriand Trough
                        Coral Sea
                                                 OSM      GB
                  KM  -25
                                                       PUB
                     -35   Mantle lithosphere                          PUB
                                      Papuan Plateau continental crust
                     -45                                    Hydrated crust
                                                                        Solomon Sea lithosphere
                                                             and mantle
                   148°E
                           Asthenosphere
                     149°E


                       150°E

                         151°E



                         (b) 152°E  13°S  12°S    11°S       10°S      9°S       8°S        7°S




                                4                     3
                                 100 km










                                2                    1










            Figure 7.40  (a) Interpretation of the crustal structure along the profile C–D shown in Fig. 7.39b (image provided by F.

            Martínez and modified from Martínez et al., 2001, with permission from Nature 411, 930–4. Copyright © 2001

            Macmillan Publishers Ltd). DI, D’Entrecasteaux Islands; GB, Goodenough basin; PUB, Papuan ultramafic belt; OSM,

            Owen Stanley metamorphic belt. (b) Model of continental break-up and ocean formation derived from the Woodlark

            Basin and Papua New Guinea (modified from Taylor et al., 1999, by permission of the American Geophysical Union.
            Copyright © 1999 American Geophysical Union). White areas are continental lithosphere. Nonextending regions are
            represented by a pattern of small and great circles to the pole of opening. Black and white stripes are new oceanic
            lithosphere. Four stages are shown from 4 Ma to 1 Ma.
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