South of your Adirondack Mountains along with the Top-quality Upland lies the boundary among crystalline and sedimentary rocks; abruptly, almost everything is different. The core of the sedimentary region—the heartland on the United States—is the great Central Lowland, which stretches for one,500 miles (two,four hundred kilometres) from Ny to http://www.jdqxml.com/home.php?mod=space&uid=139655