The Kursk Magnetic Anomaly (KMA) was first discovered in 1773 by the Russian astronomer and academic Pyotr Inokhodtsev while preparing the maps of the General Land Survey (Russian: Генеральное межевание) at the behest of the Russian government. It was not investigated again until 1874 when I. N. Smirnov conducted the first geomagnetic survey of European Russia. In 1883, N. D. Pilchikov, an assistant professor at Kharkiv University, conducted a series of 71 observations of the Kursk Magnetic Anomaly. These revealed a much larger extent than previously measured and for the first time attributed the anomaly to the presence of iron ore. In 1884, on the basis of this discovery, Pilchikov was awarded the silver medal of the Russian Geographical Society.
Serious investigation of the economic potential of the anomaly occurred under the leadership of Ivan Gubkin in 1920–1925, originally based upon the possibilities for oil.[2] Rich ores were discovered in the region of the anomaly about 1931. The ores are spread over an area estimated at 120,000 km2 (46,000 sq mi) and are magnetitequartzites disseminated throughout metamorphic rocks and Pre-Cambrian granitoids. Surveyed ore reserves of ferrous quartzite are presently estimated at more than 25 billion tonnes (28 billion short tons) of 32–37% Fe and more than 30 billion tonnes (33 billion short tons) of 52–66% Fe. The open pit method is used to mine this ore at the Stoylenskoye, Lebedinskoye, and Mikhailovskoye deposits. Underground mining methods are used for the Korobkovskoye deposit.
^Patrick T. Taylor; Ralph R. B. von Frese; Hyung Rae Kim (2003). . Proceedings of the 3rd International ØRSTED Science Team Meeting. Danish Meteorological Institute: 47–50. Archived from the original on 2011-07-17. Retrieved 2007-12-22.
^Paxton, Robert (June 26, 2008). "Commodity boom lifts Russia's iron belt". Reuters.
kursk, magnetic, anomaly, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, a. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Kursk Magnetic Anomaly news newspapers books scholar JSTOR August 2015 Learn how and when to remove this message The Kursk Magnetic Anomaly Russian Kurskaya magnitnaya anomaliya is recognized as the largest magnetic anomaly on Earth 1 It is a territory rich in iron ores located within the Kursk Belgorod and Voronezh oblasts in Russia and constitutes a significant part of the Central Chernozyom Region Oblasts comprising Central Chernozyom Region also known as the Central Black Earth Region Magnetic intensity from satellite data The Kursk anomaly is the high intensity red anomaly in the north while the Bangui anomaly is the one in central Africa The Kursk Magnetic Anomaly KMA was first discovered in 1773 by the Russian astronomer and academic Pyotr Inokhodtsev while preparing the maps of the General Land Survey Russian Generalnoe mezhevanie at the behest of the Russian government It was not investigated again until 1874 when I N Smirnov conducted the first geomagnetic survey of European Russia In 1883 N D Pilchikov an assistant professor at Kharkiv University conducted a series of 71 observations of the Kursk Magnetic Anomaly These revealed a much larger extent than previously measured and for the first time attributed the anomaly to the presence of iron ore In 1884 on the basis of this discovery Pilchikov was awarded the silver medal of the Russian Geographical Society Serious investigation of the economic potential of the anomaly occurred under the leadership of Ivan Gubkin in 1920 1925 originally based upon the possibilities for oil 2 Rich ores were discovered in the region of the anomaly about 1931 The ores are spread over an area estimated at 120 000 km2 46 000 sq mi and are magnetite quartzites disseminated throughout metamorphic rocks and Pre Cambrian granitoids Surveyed ore reserves of ferrous quartzite are presently estimated at more than 25 billion tonnes 28 billion short tons of 32 37 Fe and more than 30 billion tonnes 33 billion short tons of 52 66 Fe The open pit method is used to mine this ore at the Stoylenskoye Lebedinskoye and Mikhailovskoye deposits Underground mining methods are used for the Korobkovskoye deposit See also editStoilensky GOK Bangui magnetic anomaly Temagami Magnetic Anomaly Ishpatina RidgeReferences edit Patrick T Taylor Ralph R B von Frese Hyung Rae Kim 2003 Results of a comparison between Orsted and Magsat anomaly fields over the region of Kursk magnetic anomaly abstract Proceedings of the 3rd International ORSTED Science Team Meeting Danish Meteorological Institute 47 50 Archived from the original on 2011 07 17 Retrieved 2007 12 22 Paxton Robert June 26 2008 Commodity boom lifts Russia s iron belt Reuters 51 15 13 N 37 40 10 E 51 25361 N 37 66944 E 51 25361 37 66944 Retrieved from https en wikipedia org w index php title Kursk Magnetic Anomaly amp oldid 1192507197, wikipedia, wiki, book, books, library,
