<p>I don’t think that Swarthmore offers geology. Haverford doesn’t either, but Haverford students can major in geology at Bryn Mawr, which has an excellent program. I don’t know if Swarthmore students have this option; the “Bi-College” relationship between Bryn Mawr and Haverford seems to be stronger than the “Tri-College” relationship that includes Swarthmore.</p>