Fig. 3: Palaeomagnetic results.
From: Completing the loop of the Late Jurassic–Early Cretaceous true polar wander event
Equal-area projections of the palaeomagnetic directions of the high-temperature components (green), showing mean directions from each section (red). Statistical results, stratigraphically from bottom to top, for (a) combined specimens from three sections (TJS-TA, TJS-TB, TJS-TC) of the top of the Tiaojishan Formation (ca. 153 Ma) after rotating directions of section TJS-TA ~ 26.1° counterclockwise relative to the union of sections TJS-TB and TJS-TC, (b) the middle part of the Tuchengzi Formation (ca. 147 Ma), (c) combined specimens from two sections (TCZ-TA and TCZ-TB) of the top of the Tuchengzi Formation (ca. 141 Ma) after rotating directions of section TCZ-TB ~ 43° counterclockwise relative to section TCZ-TA. Results were calculated with 95% confidence limits. Progressive unfolding28 of specimen-mean directions showing a maximum directional clustering (Kmax) at 91.5% untilting for the top of Tiaojishan Formation after rotation (d) and at 94.1% untilting for the top of Tuchengzi Formation after rotation e.
