Daily Field Notes #135

in #geopolis6 years ago

"I like geography best, he said, because your mountains & rivers know the secret. Pay no attention to boundaries." ~ Brian Andreas

Welcome to the 135th 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.

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Geography: The Niger - A River That Feeds Many Nations

 

Original post by @freshenstine

TO A traveler in a low-flying aircraft, the Niger River appears like a broad ribbon woven intricately into the contours of West Africa. Its rapids and waterfalls seem like delicate frills of white lace adorning the ribbon, and the tributaries like slender streamers of green, gray and brown. But to the five nations whose land it drains and waters, and the more than 20 tribes who feed and make a living from its waters, the Niger is far more than an adornment. It is essential to their very existence. There are schemes for its increased use. Nigeria has projects to develop river transportation far beyond what exists a...

Geology: Geology of Iceland - Part 5: Magmas and Rocks

 

Original post by @sooflauschig

We have moved closer and closer towards Iceland, starting with the big picture ideas and moving towards the way volcanism occurs. In this post I want to introduce the different magma types, as well as the most basic igneous rock types that are formed on Iceland. At first I want to look deep into the Earth and explore the different parts of the upper mantle that melt to create the magma that consequently forms the island. Afterwards I want to talk about the different crystallization processes and types of magma transportation that leads to the variety of rock types that can be found on Iceland.

Anthropology: Our culture, our heritage

 

Original post by @gregjava

One thing Africa was reputed for, even from the medieval ages, was its diverse cultures and traditions. Most notable was the strict adherence to these cultures and how the society was crafted around principles derived from these traditions. Communuties had custodians of these traditions and traditional historians kept records of events and monuments, passing them down to subsequent generations in tales, poems and songs of all sorts. Given the beautiful vegetation that envelopes the continent, the people were predominantly farmers and fishermen. Festivals were organised to unite the people, marking remarkable days, events and seasons. There were planting season festivals, harvest...

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