The world doesn't generate stone and dirt on and above Y=64, it should be noted that this was trying to be generated more than 80,000 blocks away from spawn, therefore it is probably not a high priority although, the world wouldn't be this buggy had i not have used the 'AMPLIFIED' world type even so far away from spawn.
Seed = 7273872244004645297
Environment
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'amd64'
System.getProperty('java.version') == '1.7.0_10'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '64'
Linked issues
duplicates 1
Attachments
Comments 3
Please try again with 13w36b and let us know if this problem still exists. Possibly related to MC-29446
That is the Mesa Biome (or Disco Mountains as it was coined). It was glitched and should be fixed now in 13w36b. You may need to start a new world to see the change (I'm not possitive on that).