In this paper "Canard cycles and center manifolds" one encounters the blowing up of a non isolated set or manifoldmanifold of singulartiessingularities of a vector field or a singular foliation. This is a generalization of the standard blowup of an isolated singularity. This processeeprocess inspired me to ask the following question:
Let we have a Riemannian manifold. Then we have the geodesic flow on $TM$ whose singular set is the zero section. I wonder what will be happen ( andand what kind of geometric results will appear) ifif we simulate the same process of the above linked paper in this case of non isolated singular set,i i.e. the zero section of the geodesic flow?