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

Fig. 4

From: Paleomagnetic study of basaltic rocks from Baengnyeong Island, Korea: efficiency of the Tsunakawa–Shaw paleointensity determination on non-SD-bearing materials and implication for the early Pliocene geomagnetic field intensity

Fig. 4

Examples of results of the Tsunakawa–Shaw API experiments. a Two specimen-level successful results in API determination. b A failed result. Three diagrams shown on the left-hand (right-hand) side are from a pair of the prior (first) laboratory heating and the first (second) laboratory heating procedures, where black symbols show selected intervals of data for determining the linear segments. Inset of a Zijderveld diagram on each NRM versus TRM1* diagram shows the AF demagnetization result of NRM, where filled (open) symbols indicate projection onto the horizontal (vertical) plane

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