A GeoPoem for Accretionary Wedge #51

Metamorphism – A Poem by Teufelin Peare

“Oh, to be a clay, the life ’tis grand!”
Cried Illite as he jeered at sand.
“For here I lie, so lithe, so flat,
And there you roll, all round and fat.”
Quartz answered him with nature light,
While laughing at his foolish plight,
“Tease not my form, for soon you’ll see,
When pressures rise, you’ll envy me!”

But still clay laughed hysterically,
‘Til the prophecy did come to be,
Metamorphism began to start,
And Illite wept as he fell apart.
“Oh, Quartz, your form I now do miss,
For I can barely stand this sub-greenschist!”
“Goodbye, my friend.” sighed quartz that night
As the clay reformed to make muscovite.

Eventually the pressure stalled
And temperature began to fall.
Quartz looked around to see new faces,
Her old friends left no familiar traces.
Here was garnet, red and gaudy,
There was hornblende, horribly baudy!
Biotite, he laughed with mirth,
And the Plagioclase twins did hail their birth.

Another million years did fade,
And they all began to retrograde.
Said Garnet to her Plagioclase friend,
“This mica jerk, my heart will rend!
For Mg deep in my physique,
He steals with no uncertain cheek!”
To this replied old quartz recalling,
To garnet who was most appalling,
“You must remember times afore,
When temperatures rose, yes up they soared!
Pressure too, oh how t’was raised!
And you were born at the death of clays.
So argue not of his maturation,
‘Tis all in the ways of equilibration.”

Exploring the New National Geologic Map Database

Last Friday for National Geologic Map Day, the USGS and AASG released a brand new version of the National Geologic Map Database. I spent hours on end exploring it when I first discovered the new version, and the excitement hasn’t even begun to fade. This afternoon I hosted a ~50 minute Google+ Hangout on Air (embedded below) where I, and a couple of other geologists, discussed the new website with the USGS’s product chief Dave Soller.

The database looks really great and even though the coverage is not yet complete, there is a lot there to explore, and a lot more in the pipes that should be released in the coming months. I’d encourage you to explore it for yourself – it may be the next best thing to getting out there in the field and seeing the geology in person.

Where on (Google) Earth #358?

I located Callan’s tidal flat yesterday evening, but decided to wait until the challenge was 24 hours old before submitting my answer. Since nobody beat me to it I’ve got the honor of hosting “Where on (Google) Earth?” one more time. We’ll see if enough people are still playing to keep up the recent pace of WoGE solutions, or whether I plunge the game into hibernation again with a location too obscure to be found quickly. Only time will tell…

If you’re new to Where on (Google) Earth? the object of the game is to explore Google Earth to locate the area pictured below and then to comment here with that location (latitude and longitude or a detailed description) and a description of the geologic feature pictured. I’m particularly interested in gathering information about the geology of this location because it’s been one that I’ve looked at many times, but though it appears to have the characteristics of one type of geologic feature, I’m fairly certain that it’s actually not what one might first guess. In any case, I haven’t found much information about the geology of this spot myself and I’m hoping to use this WoGE challenge to crowdsource a bit more research. As always, the person who correctly identifies the locality and describes the geology accurately will have the opportunity to host WoGE #359 on their own geoblog. If you want a more detailed rundown of the WoGE ‘rules’ or some suggestions for WoGE strategy, see Felix Bossert’s excellent Wogelix blog.

Where on (Google) Earth #358.

My web server has been a little slow to load images recently, so if you don’t see an image here try this alternate WoGE #358 image link.

No Schott Rule. Just start searching. Good luck!