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Quaternary Geology ( GHT 404 ) -2013


Department of Geology
University of Dhaka
Fourth -Year B.S. Honor’s Course -Final Examination 2013
Subject: Geology
Course: GFIT 404 Course Name: Quaternary Geology
Subjective Part
Full marks 25 Time 2 Hours

The figure at the right margin indicates full marks. Answer any five of the following questions. Draw suitable sketches and diagrams wherever necessary.

1.
a) What are the important characteristics of the Quaternary period and possible causes for its instability? 1.5
b) How does the Quaternary Period differ from the Tertiary Period? 1.0
c) Describe the classical model of Quaternary climatic fluctuations after Penck and Bruckner and its present day reliability. 2.5

2.
a) Point out the school of thoughts on sea -level fluctuation. 1.5
b) Write down the evidence of the Holocene marine transgression along the eastern coast of the Bay of Bengal. 2.0
c) Briefly describe the Milankovitch Astronomical Forcing theory for the Quaternary climatic change. 1.5

3.
a) What do you understand by lithostratigraphy, chronostratigraphy, and magnetostratigraphy? 1.0
b) Point out the origin and evolution of the Pleistocene Madhupur Tract. 1.5
c) Compare and correlate the Quaternay deposits exposed in the Bengal Basin in Bangladesh and in its Indian counterparts. 2.5

4.
a) What is neotectonics? 0.5
b) What is a neotectonic map? State the different criteria for neotectonic studies. 1.5
c) Give an overview of neotectonic activity in the Bengal Basin. 3.0

5.
a) What are the differences in morphology between the Pleistocene and Holocene surfaces ? 1.0
b) Describe the morphology, stream pattern, and structural movements of the Barind Tract. 2.0
c) Give an account on the sediment characteristics, morphology, and structural activity of the Lalmai hills. 2.0

6. Write short notes on the following: 1.25×4=5.0
a) Concept of sea -level band
b) Haluaghat Gravel bed
c) Tiberian limit
d) Stadial and interstadial

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