TY - SER AU - Asmerom,Yemane AU - Zartman,Robert AU - Damon,Paul AU - Shafiqullah,M TI - Zircon U-Th-Pb and whole-rock Rb-Sr age patterns of lower Mesozoic igneous rocks in the Santa Rita Mountains, southeast Arizona: implications for Mesozoic magmatism and tectonics in the southern Cordillera SN - 00167606 N1 - bibliogr. p. 968 ER -