None of the Big 3 offers a degree in Geology.
One of the things we recommend here for things like this (impossible to test out of): you could get a BA in General Studies for about $5000 via test-out, and then spend the big bucks on a Masters degree in Geology.
TESU BSBA in HR (in progress) - 108cr, only 4 more classes to go...
GGU Certificate in Management - 2000
TECEP - Technical Writing 84% (3cr), English Comp II 79% (3cr), Applied LibArts Math 90% (3cr), Public Relations 70% (3cr), Computers 75% (3cr) DSST - Intro to Computers/437 (3cr), Prin of Pers Finance/458 (3cr) - 2011 CLEP - Management/69 (3cr UL), Marketing/67 (3cr UL) - 2011
Penn Foster - Financial Management 92% (3cr UL) ALEKS - Int Alg (3cr) - 2011, College Algebra (3cr) - 2015 Sophia - Project Management 85% (3cr UL) - 2015 Insurance Inst. of America - Ethics 72% (2cr) - 2015 Kaplan PLA (3cr) - 2015 Add'l ACE Credits (5cr UL) - 2000
Palomar College - Organizational Theory (3cr) - 2015 Mission College (36cr) - 92-98 Golden Gate Univ (12cr UL, 3cr LL) - 98-00 San Jose State Univ (12cr UL, 9cr LL) - 88-89