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.
At the 2010 census, the city had a population of 122,067 making it the 8th largest city in the San Francisco Bay Area. Founded in 1869 as the community of Todos Santos by Salvio Pacheco, the name was changed to Concord within months.The city is a major regional suburban East Bay center within the San Francisco Bay Area, and is 29 miles (47 km) east of San Francisco.oncord is the home of the annual Concord Jazz Festival and was the home of the Concord Records jazz record label until it was bought in 1999. Jazz musician Dave Brubeck was born in Concord and in 2006 a park adjacent to Concord High School on Concord Boulevard was renamed in his honor.