Welcome to the sixteenth Daily Field Note! Here you find the top post of the day, one covering each scientific field that is included by Geopolis. Since these authors put a lot of effort in writing a good post they surely deserve the extra exposure.

Geopolis is a project to promote and connect authors who write in the fields of global sciences. Upvotes are currently worth more than $1,50 so don't hesitate to get involved or become a member for higher rewards! You can read more about the project and how to join here:

https://steemit.com/geopolis/@geopolis/geopolis-the-community-for-global-sciences-update-3

Subjects curated by Geopolis are Geography, Anthropology, Ecology, Geology, Archeology and certain branches of History.

Archeology: Sumatra Archeology - Part I : Barus (4)

Our first archaeological post! And it is one about an ancient tomb stone found in Sumatra. Hidden symbols reveal a lot about the origins of this stone but for al the details you should definitely read @cisah's full post.

Original Post

With careful observation will be evident on this tombstone an ornate motif known as the Solomon's knot. It is combined with a stylized ornament of a kind of trophy or rather a candlestick. Two ornaments that are essentially different have been united and put together here.

Solomon's knot (Latin: sigillum Salomonis, literally 'Solomon's seal') is the most common name for a traditional decorative motif used since ancient times, and found in many cultures. (1) In fact, it is one of the oldest symbols and is seen even in the stone-age carvings. It is also one of the few symbols that can be found in nearly all the major civilizations. (2)

Geology: Santiago Rock Formation

You would think outcrops start to bore after the 10th, maybe 11th, but nothing is less true. @cruziana captured this beautiful hogback in Santiago. And next time, don't be afraid to use that jargon ;)

Original Post

Being a geology undergraduate, my coursemates and I usually go out for fieldworks (and this, perhaps, is the best thing in my course). Just last semester, we went to Ilocos Sur. We were assigned to look at different rock formation or outcrops.

Geography: Google Earth pearls #13: a fertile desert

It almost looks fake but it is as real as the earth being round. A combination of very specific mining techniques cause for these peculiar aerial images. The story behind it is truly fascinating an definitely worth your time! Thanks @ignacepelckmans.

Original Post

Today we find ourselves in the Utah dessert near a town called Moab. It's quite a place, during the summer the temperatures can exceed 40 °C (100 °F) while in the winter months the thermometer can sink as low as -30 °C (-24 °F). With an average yearly rainfall of 238.9 mm, it can officially be classified as a desert. The last thing you could associate with such an harsh environment is fertility but that might be exactly what we would find here. The purple lakes you can see on the image of today resemble a so called 'potash' mine. Potash is another name for potassium chloride, a widely used fertilizer, especially to enhance water movement through plant stems. Pretty ironic to mine such a fertilizer in the middle of desert, no?

History: 1830 BRAZILIAN 40 RIES COIN - COLONIAL PERIOD

Head back to the 19th century colony of what is now Brazil in this post of @paradise-found. He was able to lay his hands on this unique coin and tells you more about the history of it.

Original Post

Imagining the time period and the hands that this coin has touched makes history come alive to me. This coin was probably struck at the Rio mint in 1830 colonial Brazil. I purchased this coin today. ~ Paradise Found

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