Motonori Matuyama and reversals of geomagnetic field
In 1929, Matuyama published his paper on the magnetization of mostly Quaternary volcanic rocks. In this paper, he described the results of paleomagnetic measurements of volcanic rocks from Japan and nearby areas and concluded that the latest transition of the magnetic field from reversed to normal s...
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| description | In 1929, Matuyama published his paper on the magnetization of mostly Quaternary volcanic rocks. In this paper, he described the results of paleomagnetic measurements of volcanic rocks from Japan and nearby areas and concluded that the latest transition of the magnetic field from reversed to normal state occurred in the early Quaternary. In the 1960s, two groups of scientists from the USA and Australia quite vigorously conducted studies of both magnetization and age of volcanic rocks. By about 1966, they completed the reversal timescale for the last 4 million years, which was to become the basis for many earth science studies. For easy reference, they suggested to call the most recent normal or reversed periods as Brunhes, Matuyama, Gauss, and Gilbert polarity epochs, with the names taken from the scientists who made very important contributions to paleomagnetism. Chron is now the official term for the epoch, and each chron is specified by a combination of a number and a character showing the polarity. However, the names of polarity epochs were already so popular that they are still quite frequently used in scientific papers. The Matuyama epoch is between 0.773 and 2.595 million years before present. Moreover, its lower limit is now used to define the start of the Quaternary. |
| doi_str_mv | 10.2183/pjab.100.031 |
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Jpn. Acad., Ser. B</addtitle><description>In 1929, Matuyama published his paper on the magnetization of mostly Quaternary volcanic rocks. In this paper, he described the results of paleomagnetic measurements of volcanic rocks from Japan and nearby areas and concluded that the latest transition of the magnetic field from reversed to normal state occurred in the early Quaternary. In the 1960s, two groups of scientists from the USA and Australia quite vigorously conducted studies of both magnetization and age of volcanic rocks. By about 1966, they completed the reversal timescale for the last 4 million years, which was to become the basis for many earth science studies. For easy reference, they suggested to call the most recent normal or reversed periods as Brunhes, Matuyama, Gauss, and Gilbert polarity epochs, with the names taken from the scientists who made very important contributions to paleomagnetism. Chron is now the official term for the epoch, and each chron is specified by a combination of a number and a character showing the polarity. However, the names of polarity epochs were already so popular that they are still quite frequently used in scientific papers. The Matuyama epoch is between 0.773 and 2.595 million years before present. 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Proceedings of the Japan Academy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KONO, Masaru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Motonori Matuyama and reversals of geomagnetic field</atitle><jtitle>Proceedings of the Japan Academy</jtitle><addtitle>Proc. 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For easy reference, they suggested to call the most recent normal or reversed periods as Brunhes, Matuyama, Gauss, and Gilbert polarity epochs, with the names taken from the scientists who made very important contributions to paleomagnetism. Chron is now the official term for the epoch, and each chron is specified by a combination of a number and a character showing the polarity. However, the names of polarity epochs were already so popular that they are still quite frequently used in scientific papers. The Matuyama epoch is between 0.773 and 2.595 million years before present. Moreover, its lower limit is now used to define the start of the Quaternary.</abstract><cop>Japan</cop><pub>The Japan Academy</pub><pmid>39522971</pmid><doi>10.2183/pjab.100.031</doi><tpages>9</tpages><orcidid>https://orcid.org/0009-0000-6927-8930</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Earth sciences Geomagnetic field Geomagnetic reversals History, 20th Century Japan Magnetic Fields Magnetism Magnetization Matuyama Motonori Paleomagnetism Polarity polarity timescale quaternary Review Series to Celebrate Our 100th Volume Rocks Scientists Volcanic ash, tuff, etc volcanic rocks |
| title | Motonori Matuyama and reversals of geomagnetic field |
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