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MARCH-APRIL 2019  |  VOLUME 29, NUMBER 3–4
                                                SCIENCE

                                                  4   Holes in the Bottom of the Sea:
                                                      History, Revolutions, and Future Opportunities
                                                      Suzanne OConnell
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       April is a combined issue). GSA TODAY is published by The   to right): the Chikyu, a riser-equipped platform coring in the western
       Geological Society of America  Inc. (GSA) with offices at   Pacific; the JOIDES Resolution, which recovers cores throughout the
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       of diverse opinions and positions by scientists worldwide,   recovered by the Chikyu during 2012 Expedition 377, Site C0020, more
       regardless of race, citizenship, gender, sexual orientation,   than 2 km (1.25 mi) beneath the sea floor in a Miocene coalbed 80 km
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       publication do not reflect official positions of the Society.  recovered by the JOIDES Resolution. Left core is from Site 1209, Shatsky Rise, Pacific, taken in
       © 2019 The Geological Society of America Inc. All rights   2387-meter-deep water (mbsl). Right core is from Site 1262, Walvis Ridge, South Atlantic, taken at
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       wholly by U.S. government employees within the scope of   4755 mbsl. Color change shows carbonate dissolution. Right: MSP Expedition 364, Site M0077, cored
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