Pb isotopic data from southern hemisphere shows compositional similarity to EM type of mantle reservoir is known as :
DUPAL
Oceanic basalts from much of the southern hemisphere, especially the Indian Ocean and South Atlantic, plot above the Northern Hemisphere Reference Line on lead isotope diagrams.
They have high 208Pb/204Pb and 207Pb/204Pb at a given 206Pb/204Pb, together with high 87Sr/86Sr. This signature resembles the enriched mantle (EM I and EM II) reservoirs.
Hart (1984) named this large-scale southern hemisphere isotopic anomaly the DUPAL anomaly (after Dupré and Allègre, who first described it).
HIMU is a separate reservoir with very radiogenic Pb (high U/Pb), NHRL is only the reference line for northern hemisphere basalts, and FOZO is the common focal zone component of the mantle.
Hence, DUPAL.
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 :
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
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.
.................... 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?