Tikalon Header Blog Logo

Holidays 2017

December 23, 2017

Geological strata Christmas tree

Tikalon is on a year's end holiday, celebrating Christmas on Monday, December 25, 2016, and New Year's Day on Monday, January 1, 2018.

Our next article will be posted on Monday, January 8, 2017.


The major elements of the Earth's crust (see table), arrayed as ornaments on a Christmas tree image of a rock formation near the village of Agios Pavlos, Crete.

(Created using Inkscape from a rock formation photo by Dieter Mueller, via Wikimedia Commons)


Element Weight %
Oxygen 46.6
Silicon 27.7
Aluminum 8.1
Iron 5.0
Calcium 3.6
Sodium 2.8
Potassium 2.6
Magnesium 2.1

Linked Keywords: Tikalon; holiday; Christmas; New Year's Day; chemical element; Earth's crust; ornament; Christmas tree; rock formation; Agios Pavlos; Crete; Inkscape; Dieter Mueller; Wikimedia Commons; oxygen; silicon; aluminum; iron; calcium; sodium; potassium; magnesium.

RSS Feed

Google Search


Free Downloads:
STEM artwork
for your holiday gifts

STEM art images

Latest Books by Dev Gualtieri

LGM by Dev Gualtieri
LGM by Dev Gualtieri, paperback LGM by Dev Gualtieri, Kindle

Thanks to Cory Doctorow of BoingBoing for his favorable review of Secret Codes!

Secret Codes & Number Games by Dev Gualtieri
Secret Codes & Number Games by Dev Gualtieri, paperback

Other Books

Other Books by Dev Gualtieri