A fault in which the displacement of limbs take place at a right angle to the surface of discontinuity (like dyke) are known as:
Which sequence of the materials below shows no missing steps, and could occur during the rock cycle ?
Which of the following has not been considered as an earthquake precursor ?
The heat that caused melting in the Earthís early history was supplied from which of the following events or causes ?
Referring to the diagram above, path A is
The theory of plate tectonics was not initially widely accepted because .
Although igneous in origin, the chilled margins between the rounded shapes show no visible crystals. What is the name of this kind of igneous texture ?
The outcrop of manganese deposits exhibit color
Volcanism is associated with which of the following types of plate boundaries ?
What geological structure is shown on the map ?
Consider the following characteristics of a rock type :
(1) Formed by the cooling and solidifications of molten magma
(2) Molten lava when cooled formed into crystals
(3) Formed into lava plateaus, lava plains and lava shields
Which one of the following mentioned rocks posses the above characteristics ?
A cleavage consisting of closely spaced micro faults of fracture that divide the rock into a series of tabular bodies is known as :
Which type of cross- bedding cannot be used to tell top and bottom :
If a new planet were found between Venus and Mercury, which of the following features would it most likely have ?
Which labelled feature is not an unconformity ?
Which of the following statements about rock deformation is false ?
If the sedimentary rocks on a geologic map form a zigzag pattern, the underlying structure probably consists of .
Laboratory experiments indicate that .
An igneous rock contains many one- centimetre diameter crystals of olivine. Which of the following statements about the igneous rock would be true ?
What is the difference between the zone of saturation and the zone of aeration of groundwater ?
Which of the following processes is most likely to preserve land plants as a large coal deposit?
What type of volcano is shown in the diagram ?
Why is it not possible to date Pliocene fossils with the carbon- 14/nitrogen- 14 dating technique ?
Use the following statements about processes involved in the formation of energy resources to answer question 24.
I. Marine microorganisms die.
II. Organic material is heated and compressed.
III. Organic material is buried by sediment.
IV. Hydrocarbons sink through permeable rock because they are more dense than water.
V. Trees die in a swamp.
VI. Hydrocarbons rise through permeable rock because they are less dense than water.
Which of the following describes the order of formation of an oil deposit ?
How much of the original radioactive parent material would be left in a rock sample after three half- lives ?
According to the plate tectonic theory, which process is most likely to be occurring at the site of mountain building in the interior of a continent (e.g., the Himalayan Mountains) ?
Which of the following eruption and lava types is most likely produced at the Earthís surface above a subduction zone ?
Match the following parts of the rock cycle with the appropriate explanation.
Which of the following would be the least important factor to consider when designing an earthquake- resistant building ?
Which directions of compression caused the parallel alignment of the long crystals in the metamorphic rock ?
The attitude of folds and fold systems is or can be fully characterized by :
According to the rock cycle, identify the statements which are correct _______ .
Which of the following processes of the rock cycle are correctly matched with their explanations
Which of the following instruments are used in geochemical prospecting ?
Which of the following are closing ocean basin ?
Which of the following are the most abundant elements in nebula (gas clouds) in the universe ?
In general, igneous rocks :
Which of the following features are associated with a convergent plate boundary ?
What caused dust and condensing material to accrete into planetesimals ?
Nappe structures can be formed by :
As a result of radioactive decay of an isotope, _____ percent original parent isotope remains after four half- lives ?
Locations S and T shown in the southwest corner of the map are 500 km apart. _____ will be the distance between them change in one year ?
On this topographic map, the contour interval is ______
The average gravitational force of the earth is ______cm/s2.
The difference between the equatorial and polar diameters of the Earth is _____
Though many beds are upright others are not. For example, an overturned bed is one that has been rotated more than __________ degrees.
The time taken for light from the sun to reach the earth in seconds is_____
The archaen greenstone belts range in age from______M.Y
There are 48 different forms in crystals. Of these, the cubic system has forms.
Silicon is the second most abundant element in the earthís crust after oxygen. It occupies ______ % of the total volume of the crust.
Two ions can replace each other in a crystal structure only if the difference between their ionic radii does not exceed ________ %.
The optimum temperature under which the reef- building corals thrive ranges from ________ ºC.
The ratio of FeO:Cr2O3 in chromite is ________ .
The great bulk of Banded iron formations (BIFs) was laid down during the time intervals of M.Y.
The Fe+2/Mg ratio in ortho and clinopyroxenes can be used as a geothermometer. This is given as
The distribution coefficient for igneous rocks is_______
In the statement “ Indian sub-continent which formed a part of the Gondwana Supercontinent separated out around X million years before the present”, ‘X’ stands for______
In the case of diamond drilling, the core that is recovered in sticks longer than 10 cm is expressed as a percentage of the rock quality designation (RQD. High quality materials have RQD values greater than _____
The main Unonformity separating the Aechaen and Proterozoic successions occur at ________ M.Y.
The wavelength of the F- Fraunhofer line is ________ .
The mineral specimen shown in the photograph can be scratched by a copper penny and fizzes in acid. Its hardness is ______ .