Ernst Heinrich Karl von Dechen (25 March 1800 - 15 February 1889) was a German geologist. March 25 is the 84th day of the year in the Gregorian calendar (85th in leap years). ... 1800 was a common year starting on Wednesday (see link for calendar). ... February 15 is the 46th day of the year in the Gregorian Calendar. ... 1889 was a common year starting on Tuesday (see link for calendar). ... A geologist is a contributor to the science of geology. ...

He was born in Berlin, and was educated in the university in that city. He subsequently studied mining in Bochum and Essen, and was in 1820 placed in the mining department of the Prussian state, serving on the staff until 1864, and becoming director in 1841 when he was stationed at Bonn.   Berlin? (pronounced: , German ) is the capital of Germany and its largest city, with 3,426,000 inhabitants (as of January 2005); down from 4. ... Map of Germany showing location of Bochum Bochum is a city in North Rhine-Westphalia, Germany. ... [Essen], german for Meal [essen], german for eat Essen is the name of the following places: Essen, Germany, one of the major cities of the Ruhr area Essen, Belgium Essen, Netherlands, a village in the province of Groningen German: to eat, eating, food This is a disambiguation page — a navigational... 1820 was a leap year starting on Saturday (see link for calendar). ... The coat of arms of the Kingdom of Prussia, 1701-1918 The word Prussia (German: Preußen or Preussen, Polish: Prusy, Lithuanian: PrÅ«sai, Latin: Borussia) has had various (often contradictory) meanings: The land of the Baltic Prussians (in what is now parts of southern Lithuania, the Kaliningrad exclave of... 1864 was a leap year starting on Friday (see link for calendar). ... 1841 is a common year starting on Friday (link will take you to calendar). ... Bonn is a city in Germany (Population (2004 est): 313,605 ; the 19th largest city in Germany), in the Bundesland of North Rhine-Westphalia, located about 20 kilometres south of Cologne on the river Rhine. ...

In early years he made journeys to study the mining systems of other countries, and with this object he visited England and Scotland in company with Karl von Oeynhausen (1797-1865). In the course of his work he paid special attention to the coal-formation of Westphalia and northern Europe generally, and he greatly furthered the progress made in mining and metallurgical works in Rhenish Prussia. Coal is a fossil fuel extracted from the ground either by underground mining, open-pit mining or strip mining. ... Westphalia (German: Westfalen) is a region in Germany, centred on the cities of Dortmund, Gelsenkirchen, Münster, Bielefeld, and Osnabrück and included in the states of North Rhine-Westphalia and Lower Saxony. ...

He made numerous contributions to geological literature; notably the following:

• Gee gnostische Umrisse der Rheinlnder zwischen Basel und Mainz mit besonderer Rcksicht auf das Vorkommen des Steinsalzes (with von Oeynhausen and La Roche), 2 vols. (Berlin, 1825).
• Geognostische Fhrer in das Siebengebirge am Rhein (Bonn, 1861)
• Die nutzbaren Mineralien und Gebirgsarten im deutschen Reiche (1873)

But his main work was a geological map of Rhenish Prussia and Westphalia in 35 sheets on the scale of 1-80,000, issued with two volumes of explanatory text (1855-1882). He published also a small geological map of Germany (1869). He died at Bonn in 1889.

This article incorporates text from the 1911 Encyclopædia Britannica, which is in the public domain. Supporters contend that the Eleventh Edition of the Encyclopædia Britannica (1911) represents, in many ways, the sum of knowledge at the beginning of the 20th century. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...