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Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology.

It is based on measurement of the product of the radioactive decay of an isotope of potassium (K) into argon (Ar).

The average of remanent magnetizations yields declination of 0.3° and inclination of 65.9° with 95% confidence limit of 2.7°.

This paleomagnetic direction with a relatively steep inclination is thought to be correlated with the paleomagnetic secular variation data of sediments in Lake Biwa at We estimated the eruption age of Kannabe volcano, located in southwestern Japan.

Age estimation based on PSV must be combined with other dating techniques.

An almost perfect target as an attempt for a combined age estimation is Kannabe volcano (Fig.

Moreover, during C dating, one frequently encounters difficulties in collecting datable organic material in volcanic contexts.

Although thermoluminescence (TL) and optically stimulated luminescence (OSL) dating have been used widely for archaeological studies, this method entails difficulties because it requires quartz for accurate dating (e.g., Tsukamoto ., 2014) were performed.

The geomagnetic polarity time scale was calibrated largely using K–Ar dating.There is, however, no quartz in Kannabe scoria, as described below. Volcanic materials deriving from eruption can acquire stable thermoremanent magnetization (TRM) during their initial cooling.The Earth’s magnetic field changes its direction by several degrees to a few tens of degrees over timescales of 100–1,000 years, which represents secular variation.Will fill out in detail later, for not msg me to ask and I'll I am very neat and awesome in body. My favorite clothes is conservative I would like to meet an kind woman with sincere heart, caring and calm. I also have my long black hair with my lovely smooth skin. I have the capacity to love and be loved and have wonderful children and a brilliant career.

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