Engineering Geology - Dec 2014

Civil Engineering (Semester 3)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

Answer any 4 from the following

1 (a) What do you mean by the terms 'fracture pattern of mineral' and 'Cleavage of a mineral?'(5 marks) 1 (b) Describe the shelled structure of the Earth with a diagram.(5 marks) 1 (c) What do you mean by poikilitic texture?(5 marks) 1 (d) How are mushroom rocks formed?(5 marks) 1 (e) What are aquifers? Differentiate between confined and unconfined aquifers.(5 marks) 1 (f) Diagrammatically describe different types of normal fault.(5 marks) 1 (g) Describe the formation of hanging valleys.(5 marks) 2 (a) Describe a few branches of geology that are useful in civil engineering.(10 marks) 2 (b) What are Morraines? In your opinion, what kind of building material would be morraines?(5 marks) 2 (c) Draw a typical synformal fold and label the different parts.(5 marks) 3 (a) Differentiate between recumbent and isoclinal folds.(5 marks) 3 (b) Explain how the elements of structure geology can be useful in civil engineering.(10 marks) 3 (c) Describe the artesian well.(5 marks) 4 (a) Describe the feldspar group of minerals.(10 marks) 4 (b) Write a note on the origin and occurrence of coal deposits.(10 marks) 5 (a) Describe textures of sedimentary rocks.(10 marks) 5 (b) Differentiate between sorting and packing in sedimentary rocks.(5 marks) 5 (c) What are the factors that affect metamorphism?(5 marks)

Write a short note on any five

6 (a) Amphibole Minerals(4 marks) 6 (b) Barchan Dunes.(4 marks) 6 (c) Gravity method of exploration.(4 marks) 6 (d) Cone of Depression.(4 marks) 6 (e) Geological structure that affect dam construction.(4 marks) 6 (f) Angular unconformity.(4 marks) 6 (g) Lopolith and loccolith.(4 marks)