Carse went to his hundred with sixes off successive deliveries from Aldridge however earlier than he might face one other ball, final man Callum Parkinson was caught at foolish level to finish the innings.
Andy Umeed made a fast 28 off 31 balls as Somerset appeared to arrange the sport earlier than lofting a catch to long-off.
Tom Lammonby hit 36 off 34 balls earlier than being bowled by Drissell and Tom Abell then added 36 with the affected person Lewis Goldsworthy earlier than he fell for 38.
Tom Banton raced to 46 off 28 balls earlier than miscuing a catch to mid-off and Abell reached a assured 69-ball half-century however fell quickly afterwards when he edged behind for 56.
James Rew and Archie Vaughan had added an additional 35 to take the lead previous 400 earlier than they went off for dangerous mild and Somerset declared.
Durham made a disastrous begin in opposition to spin from each ends, Alex Lees calling for a fast single to cowl off the primary ball of the second over, bowled by Vaughan, and Ben McKinney was unable to beat Abell’s throw to wicketkeeper Rew.
Lees edged Leach to Overton at leg slip and departed for six earlier than Vaughan bowled Scott Borthwick leaving Durham going through a large uphill battle.