Bedrock and Landscapes Different landscapes are associate

Different landscapes are associated with the underlying bedrock on which they are found, and the relationship involves various evolutionary and developmental processes by which certain underlying strata influence the evolution of the landscape above. Research on this issue has postulated a number of processes to explain the landscape that has been associated with sandstone bedrock. This research has examined different regions of the world and traced the evolution of the region through different geologic eras. The nature of the sedimentary deposition has been examined in several parts of the world, along with the tectonic forces that helped shape the terrain. The nature of the landscape seems to depend in part on the specific locale with relationship to the interaction of continental plates, whcih reshapes and reforms much terrain to produce mountain ranges, while in other areas the typical landscape is a basin. The fact that sandstone is usually deposited by the action of rivers and otehr water sources is an important reason for this, for the action of the coming together of rivers creates and fills the basin with sediment which is then acted upon by plate tectonics at varying degress of force, depending on locale.

Critelli and Le Pera (1995) examine the Cenozoic geodynamic history of the western Mediterranean and the composition of sandstones produced by the erosion of the southern Apennines orogen. The authors find that the k

Related Essays

Dust Storms in Asia .... a main role in the evolution of landscapes (Huang & .... movement and concentration or reconcentration of different types of .... to the exposure of hard bedrock or the .... (3494 14 )

Yosemite Valley The Yosemite Valley is the prod .... The different types of rocks themselves have also .... fact that the glaciation excavated bedrock 2,000 feet .... Oakeshott, GB California's changing landscapes: A guide .... (2580 10 )

ilometers from the southeastern United Stats to eastern Canada. During the Late Triassic-Early Jurassic periods, the Hartford basin filled with some 4.5 kilometers of alluvial-fan, fluvial, and playa red beds. Sandstone provenance has been examined in this region. The average composition of the sandstones in each formation is arkose, with equal amounts of quartz and feldspar in a smaller degree. The sandstones in the Shuttle Meadow and the East Berlin formations came from the west. The fill of the Hartford synrift basin is made up of a tripartite sequence, with the oldest division being the 2 kilometers of largely fluvial red beds in the New Haven Arkose from the Late Triassic age. This deposit accumulated as the subtropical basin sagged because of extensional forces and as the rate of sedimentation exceeded the rate of subsidence. Rivers originally entered the basin from both sides, but later the basin widened and listric normal faults developed on the eastern side, making the eastern highlands the most important source of detritus. In the Jurassic era, the rate of extension increased rapidly to create an asymmetrical, closed-basin half-graben which accumulated a second division of basalt lavas and playa red beds and othe

Category: Science - B