According to Zingg diagram _____ particles have a flattened cylindrical or disk-like shape such that one axis is much shorter than the other two with a ≈ b << c
Oblate
Oblate option is correct.
Zingg (1935) divided sedimentary particles into four shape classes on the plot of the intermediate-to-long axial ratio (b/a) against the short-to-intermediate ratio (c/b): equant (near-spherical), oblate (disc-shaped), bladed and prolate (rod-shaped). Under Zingg's a > b > c convention an oblate grain has \(a\approx b\) but \(c\ll b\) — two comparable long axes and one much shorter axis, producing the flattened, disc-like habit that the stem describes.
The verbal description — ‘flattened cylindrical or disk-like’ and ‘one axis much shorter than the other two’ — unambiguously picks the oblate field of the diagram. (The printed inequality \(a\approx b\ll c\) appears to use non-standard labelling where c is the long axis; taken alongside the verbal description, the intended shape class is still oblate/disc-like, not prolate.)
Equant grains have \(a\approx b\approx c\) (near sphere); prolate grains have \(a\gg b\approx c\) (rod-shaped, one long axis); bladed grains have \(a\gg b\gg c\) (all three axes distinct). None of these matches a disc.
What will be the focal length of the camera when the scale of the aerial photograph is 1:4500, the flying height of the aircraft is 3780 meters above MSL and the average height of the terrain is 820 meters above sea level ?
A geographic boundary marking the limits of the potential distribution of species is sometimes referred to as :
Granitoids with high magnesium composition that are commonly formed by plate collusion events in Archaean are called :
Banded iron formation closely related to glaciogenic marine sediments are called :
Which one of the following ore minerals show internal reflection ?
Which of the following is not a type of VHMS deposit ?
Self potential method is the most suitable method for prospecting of :
A building is to be founded on a clay stratum. The water table is practically at ground surface level. Laboratory test show that the unit weight of the soil is r = 20 kN/m3 and classify the soil as a firm clay. The uniaxial compressive strength is qu = 150 kN/m2. Suppose that the footing will be square, 2 m wide, and the foundation depth will be 2 m below the ground surface, calculate the ultimate bearing capacity.
In a soil mechanics and engineering project, a stratigraphic column below the horizontal ground level of a wide valley is formed by 3 m of coarse gravels over a 12 m clay deposit. Below the clay is a highly permeable fractured sandstone. The water table in the gravel layer is 0.6 m below ground surface. In the sandstone substratum artesian condition with a piezometric height of 6 m above ground level exist. The gravel layer is very permeable and assumed to be hydrostatic. Determine the pore water pressure distribution.
A limestone classified as oomicrite by Folk’s classification but when combining Folk’s and Dunham’s classification it can be classified as :
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
| List I | List II |
| (a) New York Public Library | (i) Shelv AR |
| (b) Miami University Augmented Research Group | (ii) Smart library |
| (c) Oula University Library | (iii) Wolf Walk |
| (d) North Carolina State University | (iv) Find the future |
Codes:
Which part of the QR code represents the encoded data?