The top routes that United Airlines flies are: 1  CLT to ORD with 3,755 flights per month. 2  CLT to IAH with 3,511 flights every month. 3  DFW to ORD with 3,486 flights every month.  DFW to EWR with 3,268 flights every 1  month. PHL to ORD with 3,238 flights every month.
The first of the three rock types to form on Earth were the igneous rocks; formed from the cooling and solidification of magma, as the Earth was at one time completely molten. â¦. 4 people found this useful.
The oldest rock found on Earth is of extraterrestrial origin, having landed as a meteorite and dating to around 4.56 billion years ago, at the time of the formation of the sol â¦ ar system.For information on the oldest rock of terrestrial origin and the oldest terrestrial material, please see the related questions.arlier it was thought that the oldest rock of India belonged to sinngbhum craton (around 3700 my old). But as of now the oldest dated rock from India is TTG rocks from Bastar â¦ craton (roughly 3.8 by old).).