Distributor cap and rotor?

Hey all
Just curious if you have seen this before I’m assuming it is called phasing. I tried starting the car for only the second time this winter, and heard a arcing noise thought that I didn’t have a spark so decided to check the cap and this is what I found. I changed the cap and the rotor and car did start finally. If this is phasing what can I do to correct this
Thanks in advance
Pat Faley
67 barracuda notchback
69 vert
East Peoria IL