I was talking to a couple of Civil engineers at a worksite near my home which
is littered with red-coloured earth.
I enquired whether the soil was pure laterite - the answer was that they
couldn't be sure until they did a full soil analysis. I asked further whether
it was possible to determine whether a soil was laterite by the looks - they
said "No". Their reasoning is that there are a number of soils which have a
red-coloured base. The alternative method was to look at a geological survey
map which would show the composition of soils in particular areas.
Is this true or are they just spoofing me?