Past work of the US Geodynamics Committee (USGC) is summarized. The USGC devoted considerable discussion at its November 1976, meeting to preparation of an up-to-date statement of the USGC actions developed by USGC reporters. That discussion ultimately led to a number of statements and recommendations, given here. The bulk of this document is comprised of the reporters' reports on the following topics: fine structure of the crust and upper mantle, evolution of oceanic lithosphere, internal processes and properties, crystal growing, large-volume experimentation, application of isotope geochemistry to geodynamics, geodynamic modeling, drilling for scientific purposes, plate boundaries, plate interiors, data centers and repositories, geodynamic activities in the Caribbean area, seismicity and deep structure of the continental margin, and aeromagnetic survey. Appendixes give project correspondents, participants, etc. 23 figures, 2 tables. (RWR)
