Black Grey Basalt D. G. A Crushed Stone Fines Material. Central California Quarry This is a very attractive black grey crushed basalt stone fine material produced by a quarry in Central California. This crushed black basalt material packs down very well for pathways, patios and other surfaces where decomposed granite is used. The strong black-grey color of this material provides an extra design element as a contrasting or complementary dark color not often found in landscape materials. Decomposed Granite Per Ton As a general rule of 3/8" or 1/4" of crushed stone or decomposed granite material will cover a little over 90 square feet of a ground area at a 3" depth.
Decomposed Granite Per Yard As a general rule, 1 cubic yard of 3/8" or 1/4" of crushed stone or decomposed granite material will cover 120 square feet in a 3" inch layer. A cubic yard of moist crushed stone fines or decomposed granite material weighs more or less 3,000 pounds.
A proper DG surface does not move underfoot like sand or gravel, but its porosity allows water to penetrate to the soil below. That aspect makes DG or crushed stone fines a good paving material around trees and shrubs. Decomposed Granite and Crushed Stone Fines are not the same materials. Decomposed granite has a natural coarse look to it with irregular round quartz pebbles. Crushed stone products tend to be flatter and have a higher amount of fine material. Crushed stone products, granite, sandstone, limestone, and others offer a greater array of natural colors to work with than most true decomposed granite materials. The standard application process is to spread about 2" of DG or crushed stone fines, water it thoroughly then compact it with a water-filled sod roller, hand tamper or use a vibra plate it to settle. Then repeat the process with at least another 1" to 2" layer for extra depth for stability.
When ordering use the Purchase Order function at checkout and enter ROCK as your payment method. This will allow you to create an order for a firm transportation quote without having to pay for it at this time. While we have posted transport rates, in many circumstances, we are able to ship the order to you for less. You will be given a firm cost on the whole order within a few minutes to a few hours.