Geology and Geophysics
2017 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE GG-1 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.
Question 40
Open questionGG-1NAT2 marksNeeds review
The modal abundance in an ultramafic rock and the partition coefficients of lutetium (Lu) in clinopyroxene, orthopyroxene, olivine and plagioclase are tabulated below. The bulk distribution coefficient of lutetium (D̄Lu) in the ultramafic rock is __________.
Mineral | Modal abundance (%) | Partition coefficient |
|---|---|---|
Clinopyroxene | 45 | 0.506 |
Orthopyroxene | 40 | 0.42 |
Olivine | 10 | 0.045 |
Plagioclase | 05 | 0.019 |
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 41
Open questionGG-1MCQ2 marksNeeds review
Match the following classical ore deposits (Group-I) with their associated ore minerals (Group-II)
Group-I
P. Sudbury type deposit
Q. Mississippi valley type deposit
R. Climax type deposit
S. IOCG type deposit
Group-II
Molybdenite
Uraninite and chalcopyrite
Pentlandite
Psilomelane
Sphalerite and Galena
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 42
Open questionGG-1MCQ2 marksNeeds review
Which one of the following microfossils is commonly used in biostratigraphic correlation of Palaeozoic marine strata?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer