This is where the 'Go Round' should have been initiated:
As the aircraft descended through 1,000 ft radio altitude (RA), the Captain noted that the descent rate was about 1,200 feet per minute (fpm).
Look under the title of a 'Stabilized Approach' in your FCOM, it will give a definition of a stable approach and if your config/profile doesn't meet that definition then you carry out a 'Missed Approach'. The governing altitude is usually 1000'agl.
The concept of a stabilized approach came in where there were way too many CFIT accidents happening with aircraft on final approach/landing. It's not rocket science it is just common sense!
