What about scuffs and soil transfers on rocks, roots and fence rails? To answer when someone stood on a root, knocked the moss off, when a fence was climbed, when did someone go from mud puddle to grass or other surface...
What do you reckon the practical time limit is on man tracking, tactical or otherwise?
I like the idea of aging soil transfers , seeing how the 'crust' deteriorates , that's mostly a weathering factor as well i guess. Water transfer , how quickly it dries,disappears. etc.
I'm guessing that these questions are making me think that accurate short term aging of spoor would hasten a chase in a tactical situation or a S-A-R ( finding a lost child ).
The longer term stuff - aging of objects, campfires , Boot prints maybe an indicator to building up an image of deeper duration. (?)
But then again its all on a time spectrum.
Not sure if that makes sense..