Yes, they are. From the Analyze ► Distribution window, click on the red triangle menu corresponding to a column of interest. In the resulting output window, select Display Options ► Customize Summary Statistics from the column's pull-down menu and check the box next to Geometric Mean, then Click OK.
Alternatively, choose the Summary Statistics outline under the red triangle, select Customize Summary Statistics, check the box next to Geometric Mean, then Click OK.
[Previously JMP Note 36010]