Geomagnetic chronology - Chijikihennen (English spelling) geomagnetic chronology

Japanese: 地磁気編年 - ちじきへんねん(英語表記)geomagnetic chronology
Geomagnetic chronology - Chijikihennen (English spelling) geomagnetic chronology
Investigating the chronological relationship of different strata or measuring their ages is called chronology. The Earth's magnetic field has repeatedly reversed. In many cases, strata contain a record of the magnetic field at the time they were formed (natural remanent magnetism), and by measuring the ages and magnetization of many strata, a "time scale of geomagnetic reversals" has been created that records the history of geomagnetic reversals. Geomagnetic chronology is a method of chronology that uses the time scale to measure the magnetic state of each strata. For some time, a method called geological chronology has been used to determine the relative temporal relationships of distant strata using widely distributed fossils.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
各地層の年代的上下関係を調べたり,あるいは年代を測定することを編年という。地磁気は逆転を繰り返してきた。地層には,それが形成されたときの地磁気が記録されている場合が多く(自然残留磁気),地層の年代と地層の磁化のようすを多数測定することにより地磁気逆転の歴史を記録した〈地磁気逆転のタイムスケール〉が作られている。地磁気編年とは各地層の磁気のようすを測定し,このタイムスケールを利用して行う編年をいう。 以前より,地質編年といって,広く分布する化石を利用し,互いに離れた地層の時間的上下関係を相対的に決定することが行われてきた。

出典 株式会社平凡社世界大百科事典 第2版について 情報

<<:  Geological forces

>>:  Knowledge representation

Recommend

Porifera

…the name of the invertebrate organisms belonging...

Cutting - Cutting

It is a method used to propagate plants, in which...

Ali Paşa

Around 1744 - 1822 A powerful family that establis...

Ako Domain

A domain located in the Ako region of Harima Prov...

Voit, C.von (English spelling) VoitCvon

…He worked on physiological and chemical research...

Brown sugar - Kurozato

A type of molasses sugar. Also called brown sugar....

Le Charivari

A French satirical newspaper founded on December 1...

Wolfgang Amadeus Mozart

Austrian composer. One of the greatest masters in...

Red Cross Convention

Also known as the Geneva Conventions. (1) Signed i...

Second Republic (English: La Deuxième République French)

The French political system established by the Fe...

Shigemitsu Mamoru

Diplomat and politician. Born in Oita Prefecture....

"Illustrated Tales of Early Modern Craftsmen"

...He produced few portraits of beautiful women, ...

Diapir (English spelling)

A structure formed when a mass of fluid rock with ...

Senaga Kamejiro - Senaga Kamejiro

Okinawan activist and politician. Born in Tomigus...

Sedum oryzifolium (English name) Sedumoryzifolium

… [Hiroshi Yuasa]. … *Some of the terminology tha...