Help! I can't tell what type of soil I have

I need some help - I can't tell what soil type I have! I'm in North Devon, just south of Exmoor. The soil is very stony but doesn't seem to be sandy exactly - although it feels gritty it will hold in a ball when moist (if I can get a handful without stones!). Underneath the topsoil (only a foot in places) there's shale. The soil is fairly free-draining but does stay moist in most conditions. It's more or less neutral, tending slightly to alkalinity. Can anyone help?