Study of Declination, Inclination and Absolute Paleointensity of the Short-Term Geomagnetic Behavior (i.e. Cryptochron C2r.2r-1, ca. 2.46 ±0.13 Ma) Recorded at the Type Section of Halawa Valley, Koo’lau Volcano, Oahu, Hawaii, USA  

作　　者：Emilio Herrero-Bervera Emilio Herrero-Bervera(SOEST-Hawaii Institute of Geophysics and Planetology (HIGP), University of Hawaii at Manoa, Magnetic Materials and Petrofabrics and Paleomagnetics Laboratory, Honolulu, Hawaii, USA)

机构地区：[1]SOEST-Hawaii Institute of Geophysics and Planetology (HIGP), University of Hawaii at Manoa, Magnetic Materials and Petrofabrics and Paleomagnetics Laboratory, Honolulu, Hawaii, USA

出　　处：《Journal of Geoscience and Environment Protection》2021年第12期211-224,共14页地球科学和环境保护期刊（英文）

摘　　要：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.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.

关 键 词：Absolute Paleointensity Determinations Thellier-Coe Cryotpchron 

分 类 号：P31[天文地球—固体地球物理学]