The Western Part of Scotland - Assignment Example

The Western Part of Scotland IntroductionThis region found in the Western part of Scotland has an altitude ranging between 50m to 450m above the sea level. The highest point of this place lies on the eastern part and it slopes towards the western region. Diorite and granite rocks are found on the highest parts (South Western parts). These two rocks are igneous rocks formed as a result of volcanic activities. They have different composition of quartz, feldspar and hornblende. They are found on the surface and dates about 400,000,000 years ago.

Apart from these two rocks, alkali basalt or dykes are also scattered in this part and dates 66±0.4Ma. The mid altitude regions ranging from 250m to 350m is covered by all categories of rocks, igneous, metamorphic and sedimentary. These include orthogneiss, psammite, trandjhemite, pellite, amphibolites and spenifex komatiite dating 800,000,000 million years ago. The lower regions (below 250m) mainly consist of pebby sandstone, conglomate sandstone, limestone, white sandstone and pegmatite dykes dating about 180,000,000 years ago.

Slope = 0.005689 Intercept = 0.70507587Sr/86Srm = 87Sr/86Sri + (87Rb/86Srm)eλt-1Where λ is decay constant = 1.42 X 10-11 yr-1 and t is age in yearsThe equation takes the form y = mx + c where eλt-1 is equal to the gradientRearranging gives t = Ln(1.005689) ÷ 1.42 X 10-11 yr-14.00 X 108 years Slope = 0.000938 Intercept = 0.702972 t = ln(1.000938) ÷ 1.42 X 10-11 yr-1 6.60 X 107 years Slope = 0.006697115 Intercept = 0.703003887 t = ln(1.006697115) ÷ 1.42 X 10-11 yr-1 4.

70 X 108 years Slope = 0.002623359 Intercept = 0.512246316t = ln(1.002623359) ÷ 1.42 X 10-11 yr-11.85 X 108 years Slope = 0.002508193Intercept = 0.715861399t = ln(1.002508193) ÷ 1.42 X 10-11 yr-1 1.76 X 108 yearsClinopyroxene and whole-rock pairs Slope = 0.012135408 Intercept = 0.51042713t = ln(1.012135408) ÷ 1.42 X 10-11 yr-1 9.00 X108 yearsWhole-rock data Slope = 0.012674Intercept = 0.510302t = ln(1.012674) ÷ 1.42 X 10-11 yr-18.87 X 108 years