I sit upon glacial till at about 35 m above sea level and about 4 km north of The Mighty Petitcodiac. I dread digging any holes here. Matter of fact, no way I could dig one anymore. I'd judge the clay and sand contents at about 20% each, cobble at about 40% and boulder at 20%. I call it glacial crap. Trees grow very well in it but that's about all it's good for.