There are three main types of plate boundary: divergent, convergent and transform. Plates move away from one another at divergent boundaries. This happens at mid-ocean ridges. Plates move towards one another at convergent boundaries; one plate is forced below another in a process called subduction.
The skin of a Concord grape is typically dark blue or purple, and often is covered with a lighter-coloured epicuticular wax bloom that can be rubbed off. It is a slip-skin variety, meaning that the skin is easily separated from the fruit. Concord grapes have large seeds and are highly aromatic.
Route map between Martinez and Concord Show Map Report an error There are 6.30 miles from Martinez to Concord in southeast direction and 8 miles (12.87 kilometers) by car, following the I-680 route. Martinez and Concord are 13 minutes far apart, if you drive non-stop. This is the fastest route from Martinez, CA to Concord, CA. The halfway point is Pacheco, CA. Martinez, CA and Concord, CA are in the same time zone (Pacific Daylight Time). Current time in both locations is 3:42 pm.