In the United States, trachytes crop out extensively in the Davis Mountains, Chisos Mountains, and Big Bend Ranch State Park in the Big Bend (Texas) region, as well as southern Nevada and South Dakota (Black Hills).
Di Amerika Serikat, trasit muncul keluar secara ekstensif di Davis Mountains, Chisos Mountains, dan Big Bend Ranch State Park di kawasan Big Bend (Texas), serta Nevada selatan dan South Dakota (Black Hills).