At the light-colored extreme are rocks made up mainly of quartz and the feldspars, with about 70% silica. Such rocks are called granitic rock. Rocks which contain large amounts of the ferromagnesian dark matter and about 50% silica are said to have basaltic composition.
It became the House of Burgesses â the first legislative assembly in the American colonies. The first assembly met on July 30, 1619, in the church at Jamestown. Present were Governor Yeardley, Council, and 22 burgesses representing 11 plantations (or settlements) Burgesses were elected representatives.
Burgessâ Land Use Model. Definition- As used in urban areas, the Burgess' land use model depicts society within an urban area as being arranged in a series of concentric rings in positions defined by social factors. Explanation- Society as defined by this model is arranged into five rings within an urban area. 1. Central Business District.