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.
The wampum belt symbol of the Seneca tribe represented the âkeepers of the western doorâ. The Seneca tribe were known as people of the big hill. The Seneca Indians today only tribe to own a U.S. city. In 1660 there were approximately 5000 Seneca Native Americans.Today the Seneca population has doubled with approx.he wampum belt symbol of the Seneca tribe represented the âkeepers of the western doorâ. The Seneca tribe were known as people of the big hill. The Seneca Indians today only tribe to own a U.S. city. In 1660 there were approximately 5000 Seneca Native Americans.