Vitrain was probably formed under somewhat drier surface conditions than the lithotypes clarain and durain.
Changes produced by surface conditions such as compaction are usually excluded.
They provide evidence of former surface conditions and the life-forms that existed under those conditions.
The results indicate that surface conditions changed dramatically around 3.7 billion years ago.
Depends so much on surface, conditions etc. Nadal arguably has the biggest balls in professional sport - in the clutch is anyone better than him?
Core convection produces Earth's magnetic field, which may influence surface conditions, and mantle convection causes volcanism, seafloor generation, and mountain building.
Scientists now know, however, that Venus and Earth have evolved surface conditions that could hardly be more different.
With increasingly controlled climatic and surface conditions and increasingly accurate timing devices, however, the record was lowered many times thereafter.
That then changes how the powertrain, the electronic stability control and the traction control react to surface conditions.
Underlying surface conditions of all the samples were the same.
(lambda _text {m}) is given for surface conditions.
