TY - RPRT TI - U-Pb isotopic evidence for accretion of a continental microplate in the Zalm region of the Saudi Arabian Shield AU - J. S. Stacey AU - R.A. Agar PY - 1986 DO - 10.3133/ofr86166 UR - https://pubs.usgs.gov/publication/ofr86166 ID - ofr86166 ER -