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Geology
List of top Geology Questions
Which of the following is/are slope stabilization method(s)?
GATE GG - 2023
GATE GG
Geology
Applied Geology
90% of the bulk Earth is constituted of Fe, Si, O and:
GATE GG - 2023
GATE GG
Geology
Geochemistry
All the faces of an octahedron can be collectively symbolized by:
GATE GG - 2023
GATE GG
Geology
Determinative mineralogy of common rock forming minerals
In which one of the given mass extinction events, global cooling that resulted in glaciation and lowering of sea level, is considered as the major cause of extinction for more than 50% of marine fauna?
GATE GG - 2023
GATE GG
Geology
Geological Time Scale
Processes of fossilization affecting an organism from its death to burial under sediments come under the study of:
GATE GG - 2023
GATE GG
Geology
Paleontology
The dip and dip direction of the lee side of a straight crested ripple on modern sediments are found to be 15$^\circ$ and N10$^\circ$W, respectively. Considering unidirectional water movement, the flow direction is towards:
GATE GG - 2023
GATE GG
Geology
Sedimentology
Rhodochrosite in hand specimen is most likely to be confused with certain varieties of:
GATE GG - 2023
GATE GG
Geology
Determinative mineralogy of common rock forming minerals
The number of lattice points in a face-centered cubic (FCC) unit cell is:
GATE GG - 2023
GATE GG
Geology
Determinative mineralogy of common rock forming minerals
Given $\Delta V_r$ and $\Delta S_r$ are the volume and entropy of reaction, respectively, the most suitable conditions for the reaction to be used as a geothermometer are
GATE GG - 2023
GATE GG
Geology
Metamorphic Petrology
Choose the
CORRECT
statement regarding crystallization of a single feldspar of composition Or$_{50}$Ab$_{50}$ in the Albite–Orthoclase system.
GATE GG - 2023
GATE GG
Geology
Igneous Petrology
The behavior of trace elements in magmatic systems follows:
GATE GG - 2023
GATE GG
Geology
Geochemistry
Which one of the following mineral pairs shows solid solubility through coupled substitution of elements?
GATE GG - 2023
GATE GG
Geology
Determinative mineralogy of common rock forming minerals
Which of the given folds is/are represented by the stereoplot? \begin{center} \includegraphics[width=0.5\textwidth]{04.jpeg} \end{center}
GATE GG - 2023
GATE GG
Geology
Structural Geology
Which one of the following Phanerozoic periods has the shortest duration of time?
GATE GG - 2023
GATE GG
Geology
Geological Time Scale
At a depth of about 400 km inside the Earth, which one of the following occurs?
GATE GG - 2023
GATE GG
Geology
Metamorphic Petrology
Which of the following is a chronostratigraphic unit?
GATE GG - 2023
GATE GG
Geology
Geological Time Scale
During contact metamorphism, with increasing temperature,
GATE GG - 2023
GATE GG
Geology
Metamorphic Petrology
An underground vertical dyke is intercepted by an inclined borehole as shown in the figure below. The length of the dyke core intercepted by the borehole is 4m. If the true thickness of the dyke is 2m, the inclination of the borehole from the vertical is __________ degrees. (In integer)
IIT JAM GG - 2023
IIT JAM GG
Geology
Structural Geology
A longitudinal profile of a river is shown in the figure below. If the average discharge of the river at reach AB is 200 m
3
/s and increases to 300 m
3
/s at reach CD, then the stream power from the reach AB to CD will change by a factor of _______. (Round off to two decimal places)
(Use g = 10 m/s
2
, P
water
= 1000 kg/m
3
)
IIT JAM GG - 2023
IIT JAM GG
Geology
Geomorphology
The density of a FCC unit cell is 6.5 g/cm
3
. If the mass of a single atom is 60 g/mol, the diagonal length of the face {100} is ________Å. (Round off to two decimal places) (Use NA = 6.022 × 10
23
)
IIT JAM GG - 2023
IIT JAM GG
Geology
Mineralogy
Which one of the following Gondwana flora is a seed?
IIT JAM GG - 2023
IIT JAM GG
Geology
Paleontology
Which one of the following textures shows cuneiform-shape intergrowth between alkali feldspar and quartz?
IIT JAM GG - 2023
IIT JAM GG
Geology
Petrology
A pelitic rock consisting of cordierite + garnet + K-feldspar + sillimanite belongs to which one of the following metamorphic facies?
IIT JAM GG - 2023
IIT JAM GG
Geology
Petrology
A plutonic igneous rock is composed of 50% orthopyroxene, 45% olivine and 5% clinopyroxene. What is the appropriate name of the rock according to the IUGS classification?
IIT JAM GG - 2023
IIT JAM GG
Geology
Petrology
The AFM diagram given below shows stability of minerals in the garnet zone. If P, Q, R and S represent the compositions of different pelitic rocks, which of the following is/are characterised by the equilibrium assemblage of muscovite + garnet + biotite + quartz?
IIT JAM GG - 2023
IIT JAM GG
Geology
Petrology
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