Sunday, May 02, 2021

Geosonnet 68

A hickory, a dickory, a dock
Diffusion rate of mice when timing’s known
But atoms, unlike rodents, have a clock
Which contradicts the others, all alone.

“A thousand Years,” says fat man Barium.
M-g squeaks, “Nah mate, more like less than one.”
T-i says, “Where’s my honorarium?
I can’t work here, diffusion’s not begun.”
He’s right! The two plus profiles haven’t moved.
The curves are melt dilution marks instead
The timescale’s not millennia, it’s proved
It’s more like months, and barium misled.
   Basalt melts felsic crystal mush so fast
   A season’s all you get before the blast.

Geology 43 695

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Sunday, March 07, 2021

Geosonnet 67

 When Hansel, sister Gretel mark their way,

They leave a trail of breadcrumbs to define

The path they’ve tread, retraced at end of day.

Their wish to scamper home demands the line.

But breadcrumbs made of stone tell diff’rent tales.

Dropped from volcanic vents, they lead not home.

Broadcast when glowing edifice exhales,

When they detached from rhyolitic foam.

And as the bubbles grew, they stretched and cracked

Brittle and ductile, like a crusty bun

Rheology of glowing glass intact

They log the speed of their eruptive run.

When ashfall buries house of gingerbread

The breadcrust bubbles mark only the dead.


Geology 48 1205

Other geosonnets: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64  65 66  67

Thursday, February 18, 2021

Geosonnet 66

A Solo smuggler must hide his freight.
Hidden compartments store his shady wares.
So when a mineral conceals hydrate
There must be secret structure which ensnares
The water slipping through the MOHO line.
A fugitive from oceanic law.
How does an olivine the H confine
And store in crystal structure lattice flaw?
The brucite sidekicks are forsterite’s foils
Magnesium, low silica create
Tetragonal sites vacant, H embroils
This nominally dry mantle substrate
    Hot hydrogen won’t change the warring stars
    And yet it could distinguish us from Mars.

Geology 46 571

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