TY - RPRT TI - Actual timing of neodymium isotopic variations recorded by Fe-Mn crusts in the western North Atlantic AU - K.W. Burton AU - D.-C. Lee AU - J.N. Christensen AU - A. N. Halliday AU - J.R. Hein PY - 1999 DO - 10.1016/s0012-821x(99)00138-7 UR - https://pubs.usgs.gov/publication/70021823 ID - 70021823 ER -