Michale Kyser and Raheem Appleby also contributed 12 points apiece and Jacobi Boykins had 11 as Louisiana Tech (17-5, 8-1 Conference USA) shot 49 percent from the floor on 65 attempts to extend its win streak to three.
Trailing by a point late in the first half, Louisiana Tech took control with a 22-4 run that stretched across both sides of the intermission and included back-to-back 3-pointers from Boykins, giving the Bulldogs a 48-30 lead with 17:47 still to play. The lead never tightened below double figures the rest of the way.
Marshall (6-16, 2-7) had 23 turnovers and was held to 17-for-52 shooting from the floor.
Ryan Taylor led the Thundering Herd with 20 points and 12 rebounds.