eustacy

plural eustacies

1. alternativeuncountableusuallyAlternative spelling of eustasy.

   Takai, F., and Tsuchi, R. 1963 The Quartenary: In "Geology of Japan," Univ. Calif. Press: 173–196 / […] From these facts, it is inferred that the main coastal terraces were probably formed due to glacial eustacy.

   1965, Horace G. Richards, Rhodes W[hitmore] Fairbridge, Annotated Bibliography of Quaternary Shorelines (1945–1964): Prepared for the VII International Congress of International Association for Quaternary Research (INQUA) Meeting at Boulder, Colorado, August 30 – September 5, 1965 (Special Publication; 6), Philadelphia, Pa.: Academy of Natural Sciences, →OCLC, page 250

   1 more example

   The range in elevation suggests that the sea level was not constant during the formation of the caves and that the rise of land – perhaps counterbalanced periodically by glacial eustacies – was probably continuous.

   1968, Asian Perspectives: A Journal of Archaeology and Prehistory of Asia and the Pacific, volume 12, Honolulu, Hi.: University Press of Hawaii, →ISSN, →OCLC, page 133, column 2