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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: New absolute paleomagnetic intensity data from Cenozoic basalts of Northeast China and exploring rock-magnetic parameters for efficient sample preselection on the Tsunakawa–Shaw paleointensity method

Fig. 4

Examples of specimen-level TS API results. a Specimen 14222-F-14 (successful in API determination), b Specimen 14175-F-1BL (failed in API determination), and c Specimen 14183-C-1A4 (failed in API determination). As the result of a single API experiment result, NRM vs. TRM1* diagram (left panel) and TRM1 vs. TRM2* diagram (right panel) are shown, where black symbols show selected data intervals for determining the linear segments (associated to API determination). Inset of a Zijderveld diagram on each NRM vs. TRM1* diagram shows the altering field demagnetization result of NRM, where filled (open) symbols indicate projection onto the horizontal (vertical) plane. Statistical values used in the API determination are also given

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