A novel determination of the absolute paleointensity (P.I) of 28 flows that recorded Cryptochron C2r.2r-1 (ca. 2.46 ± 0.13 Ma) using the modified Thellier-Coe method was undertaken to understand the geomagnetic e...A novel determination of the absolute paleointensity (P.I) of 28 flows that recorded Cryptochron C2r.2r-1 (ca. 2.46 ± 0.13 Ma) using the modified Thellier-Coe method was undertaken to understand the geomagnetic evolution of the paleofield during an excursion with </span><span style="font-family:"">the</span><span style="font-family:""> existence of less than 10</span><span style="font-family:""> </span><span style="font-family:"">Kyrs. The successful PI determinations along the 120-meter sequential erupted flows indicate that within the truly transitional/excursional portion of the record there is a conspicuous decrease of the PI values ranging from 20 μT to low values of about 5</span><span style="font-family:""> </span><span style="font-family:"">μT. These values are comparable to lows similar to polarity transitions of the geomagnetic field. At the base of the sequence</span><span style="font-family:"">,</span><span style="font-family:""> the record shows oscillations of the paleofied ranging from 120 μT and as low as ~10</span><span style="font-family:""> </span><span style="font-family:"">μT with very variable changes of the non-transitional/excursional paleofield.展开更多
文摘A novel determination of the absolute paleointensity (P.I) of 28 flows that recorded Cryptochron C2r.2r-1 (ca. 2.46 ± 0.13 Ma) using the modified Thellier-Coe method was undertaken to understand the geomagnetic evolution of the paleofield during an excursion with </span><span style="font-family:"">the</span><span style="font-family:""> existence of less than 10</span><span style="font-family:""> </span><span style="font-family:"">Kyrs. The successful PI determinations along the 120-meter sequential erupted flows indicate that within the truly transitional/excursional portion of the record there is a conspicuous decrease of the PI values ranging from 20 μT to low values of about 5</span><span style="font-family:""> </span><span style="font-family:"">μT. These values are comparable to lows similar to polarity transitions of the geomagnetic field. At the base of the sequence</span><span style="font-family:"">,</span><span style="font-family:""> the record shows oscillations of the paleofied ranging from 120 μT and as low as ~10</span><span style="font-family:""> </span><span style="font-family:"">μT with very variable changes of the non-transitional/excursional paleofield.
