Geological Structures and Physiographic Provinces of the United States Research Paper - 1

Geological Structures and Physiographic Provinces of the United States - Research Paper Example On closer examination physiographic provinces can be subdivided into physiographic sections, each being an area inside a province basically due to geographic distribution. Every section can be separated into physiographic districts, each being an area in a local landforms section. The pacific province has a number of features which include; Olympic Mountains, Puget Trough, Klamath Mountains, Oregon Coast Mountains, Los Angeles Ranges, California Coast Ranges and the California Trough. These materials provide a diversity of soils and river nutrients that originate from them. Geology differences and formation time of these ranges influence the hydrology, geomorphology, and the biology of rivers and streams which arise in individual regions (Lew, 2004). The entire pacific province mountain system has been described having been arranged in a chain. The pacific mountain’s climate is varied compared to all other regions; the annual cycle has been consistent every year. Although, extreme interannual variation occurs, leading to long drought periods and year’s extreme runoff and high rainfall for instance El Nino events. The main distinct difference between the mountain system of the Sierra Nevada and the mountain range of Cascade is that the Sierra Nevada is a tilted fault block that rises 4,420 m which is equivalent to 14500 ft high. It also supports pine and fir trees while the Cascade is marked by several stratovolcanoes, which are relatively active. The Sierra mountain system stands alone while the Cascade Mountain Range stands to be chains of mountains. The Cascade Mountain Range is still active. The coastal plain extends down the Atlantic Ocean Eastwards from the Fall Zone. Large tidal rivers, Rappahannock, James, York and the Potomac flow southeastward to the Chesapeake Bay where they empty into Atlantic Ocean. The topography is a terraced landscapes which stair-steps down into major rivers and the