Question:
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?
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?
Updated On: Oct 1, 2024
- Norite
- Wehrlite
- Troctolite
- Harzburgite
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The correct option is (D): Harzburgite
Was this answer helpful?
0
0
Top Questions on Petrology
- The sedimentary structure formed by unidirectional current is
- The name of an igneous rock having a modal composition of 55% olivine, 40% orthopyroxene and 5% plagioclase, as per the IUGS classification scheme, is
- For the given Barrovian metamorphic sequence, which of the following statements are correct?
- Consider the univariant metamorphic reaction Albite = Jadeite + Quartz. The minimum number of chemical components required to describe the composition of all the phases is _________ . (In integer)
- Which of the following statements on mantle partial melting are correct?
View More Questions
Questions Asked in IIT JAM GG exam
- The geothermal gradient in the continental crust is 0.02 ⁰C/m. If the surface temperature is 25 ⁰C, the temperature at a depth of 18 km from the surface is ________ ⁰C. (In integer)
- IIT JAM GG - 2024
- Applied Geology
- According to Strahler’s stream ordering system, what is the highest order of stream in the given diagram?
- IIT JAM GG - 2024
- Geomorphology
- A partially saturated soil sample has a volume of 1200 cc. The volume of water present in the sample is 300 cc. The mass of solid in the sample is 1908 g and the particle density is 2.65 g/cc. The porosity (n) of the soil sample is _______ %. (In integer)
- IIT JAM GG - 2024
- Applied Geology
- Neutron-rich unstable nuclides undergo
- IIT JAM GG - 2024
- Applied Geology
- Which of the following is the correct decreasing order of abundance of elements in our solar system?
- IIT JAM GG - 2024
- The Planet Earth
View More Questions