GR translation: Too violently pitched alive in constant flow

[Mike Jing]

V720.17-23, P734.31-37   This is the World just before men. Too
violently pitched
alive in constant flow ever to be seen by men directly. They are meant only
to look at it dead, in still strata, transputrefied to oil or coal. Alive,
it was a threat: it was Titans, was an overpeaking of life so clangorous
and mad, such a green corona about Earth’s body that some spoiler had to be
brought in before it blew the Creation apart.

In what sense is the word "pitch" used here?