What we see on your face
Hills, vales, gorges, rivers, lakes
vast ocean, icy land, the desert sands
what we don’t see inside, the abyss.
An apple with pinched top and bottom
a bulge in centre with an endless spin
You are layered inside like a boiled egg
outer shell, middle white and core yolk.
You are segmented from top for sure
The three, crust, mantle and the core
Seismicity and gravity brought to the fore
What we can’t probe with a drill bit core.
Thin crust, rigid, broken into tectonic plates
With continental granite and oceanic basalts
Continents as home for humans with divided nations
Between crust and mantle, Moho sets the limits.
Next the molten mantle, thick and bulky
Steady convection currents make it feisty
Geodynamically active, moves the plates
On the crust, pours lava, builds mountains.
Beneath the mantle, till the centre of Earth lies
The Iron-Nickel core, hot, dense with two portions
Outer makes a dynamo and spurs the magnetic field
Solid inner core drives ever the mantle convections
Acts as Earth’s dynamic engine, secures the magnetic field.
Giant Powerhouse hiding deep beneath our feet
Orderly layered segments arranged so neat
The deep, under pressure, boils with intense heat
However, Mother Earth’s face is full of grace; what a fete.
.................Narayan Gadagkar