Question:
The sedimentary structure formed by unidirectional current is
The sedimentary structure formed by unidirectional current is
Updated On: Feb 10, 2025
- trough cross-bedding
- oscillation ripple
- concretion
- hummocky cross-stratification
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Trough cross-bedding is formed by unidirectional currents, typically in a fluvial or shallow marine environment. This structure is characterized by angled layers of sedimentary material that are deposited in a current-driven direction.
Was this answer helpful?
1
0
Top Questions on Petrology
- In the given isobaric binary temperature-composition (T-X) phase diagram involving solids A and B, the fraction of melt remaining at point Q for a magma having initial composition P will be _______. (Round off to one decimal place)
- Clinopyroxene crystallizing from a basaltic magma has Sm concentration of 24 ppm. If the clinopyroxene-melt partition coefficient for Sm is 1.2, the concentration of Sm in the basaltic magma will be ______ ppm. (In integer)
- 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)
- For the given Barrovian metamorphic sequence, which of the following statements are correct?
- Which of the following statements on mantle partial melting are correct?
View More Questions
Questions Asked in IIT JAM GG exam
- An orebody contains pyrite and chalcopyrite in the same molar proportions. The percentage concentration of Cu in the ore will be ________. (Round off to the nearest integer) (Use atomic weight, in g/mol, of Cu = 63.55, Fe = 55.85, S = 32.06)
- IIT JAM GG - 2024
- Mineralogy
- For an anisotropic crystal of thickness 0.04 mm and refractive indices of 1.636 and 1.486 along the slow and fast directions, respectively, the retardation produced is ______ nm. (In integer)
- IIT JAM GG - 2024
- Mineralogy
- A rock element during deformation, experienced a pressure change of $5×10^4 N/m^2$, due to which its volume changed from 4 cm3 to 3.9 cm3. The bulk modulus of the rock is ________ ×$10^6 N/m^2$. (In integer)
- IIT JAM GG - 2024
- Applied Geology
- 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
- The mole fraction of forsterite in olivine with MgO = 29.17 weight %, FeO = 34.65 weight % and $SiO_2$ = 36.18 weight % is _______ . (Round off to two decimal places) (Use molecular weight, in g/mol, of MgO = 40.31, FeO = 71.85 and $SiO_2$ = 60.00)
- IIT JAM GG - 2024
- Mineralogy
View More Questions