cyclothem

旋回层

词形变化

cyclothems 复数 cyclothems

释义与例句

n.
  1. 1.

    A vertical stratigraphic sequence caused by repeated flooding by the sea

    地质

词源

From cyclo- + Ancient Greek θέμα (théma, “a deposit”). Coined by American scientists Harold R. Wanless & J. Marvin Weller in 1932.

来源：wiktionary