EN Englisch Wörterbuch 20351 bis 20400
- observation wells
- operations of drilling
- open-cast lignite mine
- output of a well
- optical rotatory power
- olivine rock
- oozing out
- oozed out
- original material
- ore capping
- oxide of iron
- on-dip
- observation point
- orogenic sediment
- output well
- output wells
- outburst of gas
- outbursts of gas
- orientation diagram
- oceanic bank
- orbicule
- open condition of surface
- ochrous
- odometer test
- odometer tests
- octahedral sheet
- octahedral sheets
- octahedrite
- octahedrites
- oil show
- oil trace
- oil shows
- oil traces
- oligotrophic
- olistolith
- olistotrome
- olive ore
- oil sandstone
- ontogenetical
- oolitic lime
- ophiolite
- ophitic
- Ordovician (system
- organogenic
- organogenous
- orogen
- orthogeosyncline
