TY - RPRT TI - Ancient and modern subduction zone contributions to the mantle sources of lavas from the Lassen region of California inferred from Lu-Hf isotopic systematics AU - L. E. Borg AU - Janne Blichert-Toft AU - Michael A. Clynne PY - 2002 DO - 10.1093/petrology/43.4.705 UR - https://pubs.usgs.gov/publication/70024818 ID - 70024818 ER -