I hear Warowls saying the map will have a Central-South America theme, so i think this names correspond to the theme Warowls want. I WILL EDIT FOR SOME NEW NAMES LATER ! (Sorry if you don't understand my English)

de_catrina
Catrina is a very important Character for Latam, that's the women from the Day of the Dead.

de_dunes
Dunes, from the Desert.

de_sedona
This place from USA have Red Stone.

de_igneous
The map looks like a Hot Place, so i choose a synonymous.

de_chert
Chert is a colourful Stone. Normally Gray and Red.

de_hangover
In Mexican Spanish, that's when someone take an excess of alcohol. It cause Headache and puke.

de_comeback
Idk, it sound nice :)

de_judicial
The same as the other.