Geological History of Earth Home > Earth > Plate Tectonics > Geologic History of Earth How Old is the Earth? In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. Dyson's Dodecahedron Updated March 18th 2016 – 376 Maps Good lord I love maps. When I started this blog I hadn’t even considered using it to fulfill my map fetish in some twisted way. But now it is best known for my maps. So here I’m collecting all my maps so you don’t have to dig through the whole archive of blog posts to find them. The History and Geography of Inventions [Home Page][Other Page] [Search Inventions] [Before 10,000 BC][10,000 BC to 4000 BC][4000 BC to 3000 BC][3000 BC to 2000 BC][2000 BC to 1000 BC][1000 BC to 1 BC][1 AD to 1000 AD][1000 to 1500][1500 to 1700][1700 to 1800][1800 to 1850][1850 to 1900][1900 to 1950][Since 1950] [Inventions][Biographies][Religions of the World][Bible Contradictions][Rain][Countries of the World][Cookery][Music][Composers (Opera)] [Readers' Feedback (Religion)]
Atmosphere, Biosphere, Hydrosphere, Lithosphere The area near the surface of the earth can be divided up into four inter-connected "geo-spheres:" the lithosphere, hydrosphere, biosphere, and atmosphere. Scientists can classify life and material on or near the surface of the earth to be in any of these four spheres. The names of the four spheres are derived from the Greek words for stone (litho), air (atmo), water (hydro), and life (bio). Lithosphere
What's Hiding Beneath New York City Is Amazingly Creepy Posted in New York February 04, 2016 by Lea Monroe Full of historical secrets and wonder, the ground you’re walking on in New York may hold more mystery to it than you would ever imagine! Hiding over ten stories beneath the streets of the city and the world-renowned Waldorf Astoria luxury hotel, lies a secret subway platform that will have everyone wishing these walls could talk. Earth's Timeline Some of the boxes are named after places where the rocks were studied in detail (eg the Devonian after Devon). Because the world's surface plates are constantly moving, albeit very slowly, the rocks vary at different times. For example the Devonian sandstones of England represent a time when southern England was in the southern latitudes, near the area occupied by the Namibian deserts today. The Carboniferous rocks in England include coals deposited by vast forests when England lay on the Equator, and the Permian sandstones when we were at the latitude of the western Sahara.
Space Sciences: Glossary Terms accretion - Process of growth or enlargement by gradual buildup. In the early solar system, dust and gas were pulled together by gravitational attraction to form planets, moons, and other objects airglow - Light seen in the upper reaches of the Earth’s atmosphere (in the layer called the ionosphere). 2015 Dodecahedron Cartographic Review - ZERObarrier The 2015 Dodecahedron Cartographic Review is an 88-page curated collection of most of the maps and descriptions thereof that appeared on Dyson's Dodecahedron throughout 2015. Designed to be a letter-sized spiral bound book, this digital edition also includes a second version of the book where many of the maps have been resized (larger) to better fit the page once all the text has been removed. Unlike the maps of Dyson's Delves I and Dyson's Delves II, the maps I drew for the Dodecahedron in 2015 were predominantly drawn on letter-sized paper, so a different format of map book was needed for this review of the year's cartography. The PDF edition of these maps is provided as a convenience for readers of the blog and fans of RPG cartography and contains no exclusive content - everything in this PDF can be hunted down on the Dyson's Dodecahedron blog and downloaded at high resolution.
In Charted Waters - Evolution of the World Map as it was Explored Maps are among the most accessible assets we can use accurately, whether it’s an old print or the newest mobile app. Still, it took centuries for people to truly understand the geography of the world. Here, we show how our knowledge has grown and developed over time… Scroll to begin the journey Atlantic Ocean Earth’s Orbit Around The Sun Diagram of the Earths orbit around the Sun. Credit: NASA/H. Zell Ever since the 16th century when Nicolaus Copernicus demonstrated that the Earth revolved around in the Sun, scientists have worked tirelessly to understand the relationship in mathematical terms.