CREATE TABLE table_48938 ("Buffalo" TEXT, "Rochester" TEXT, "Syracuse" TEXT, "Utica" TEXT, "Albany" TEXT)

What is Rochester, when Syracuse is Cardiff Dark Gray Shale, and when Albany is (Mt. Marion Fm.)?
SELECT "Rochester" FROM table_48938 WHERE "Syracuse" = 'cardiff dark gray shale' AND "Albany" = '(mt. marion fm.)'
SELECT "Rochester" FROM "table_48938" WHERE "Albany" = '(mt. marion fm.)' AND "Syracuse" = 'cardiff dark gray shale'