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Margins A Research Initiative for Interdisciplinary Studies of the Processes Attending Lithospheric Extension and Convergence (1989) / Chapter Skim
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Executive Summary
Pages 3-7

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From page 3...
... Working against these benefits are a plethora of geologic hazards, ranging from the obvious destructive effects of earthquakes and volcanoes to subtle threats of sea level change and climate modification. The paradigm of plate tectonics developed in the 1960s created a revolution in our understanding of both the present ocean basins and the ancient continental interiors.
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From page 4...
... The outcome of the workshop indicates widespread support and enthusiasm for a new direction in margins research that would focus on interdisciplinary studies of the fundamental processes of margin evolutions Interdisciplinary studies, as a new direction, are demonstrated by the working group reports, which show a remarkable similarity in focus despite the wide diversity o f top i as addres s ed and the degree of separation usually present between investigators from different disciplines. Many of the scientific problems that were identified, and their suggested solutions, were common to several working group topics.
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From page 5...
... Growth and Modification of Continental Crust Magmatism at continental margins, such as basaltic magmatism at divergent margins and especially arc magmatism at convergent margins, is the primary mechanism for the formation of new continental crust. The process of magma genesis is strongly dependent on the interaction of several distinct chemical reservoirs, such as subducted oceanic crust and sedimentary cover and a variety of mantle reservoirs.
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From page 6...
... They typical ly form thick, extensive deposits over ~ ying the zones of rifting or convergence that def ine the continental edges . The depositional processes respons ~ ble for transport =~d a ccumu ~ a t i on o f these s ed iments repre s ent a c omo ~ e x, dynam i c system that is controlled by eustatic, tectonic, and climatic conditions.
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From page 7...
... Continental Margin Sedimentary Record The objective of the workshops would be to take the broad scientific objectives defined by the Irvine workshop and to develop and implement from them a focused program of research in the four areas named above. The plans formulated by these workshops and the results of discussions with the funding agencies will be combined into a so i ent i f ic pi an to be f ormul ated by the end of 1990 to chart a course for margins research for-the following decade.
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Key Terms

  • continental crust
  • margins research
  • continental margin
  • oceanic crust
  • interdisciplinary studies

  • scientific objectives
  • margin evolution
  • convergent margins
  • fundamental processes
  • plate interactions

  • processes associated
  • society depends
  • organic matter
  • ormul ated
  • divergent margins

  • uid pressures
  • plate tectonics
  • margins wick
  • earth sciences
  • recent recognition

  • ocean studies
  • using increasingly
  • sedimentary record
  • magma genesis
  • depositional compaction

  • faults form
  • sciences jointly
  • faulting faults
  • destructive effects
  • broad scientific


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