Fig. 2: Geophysical compilation and interpretation.
From: An embayment in the East Antarctic basement constrains the shape of the Rodinian continental margin
a Magnetic anomaly map. Thin blue line is zero m elevation contour from Fig. 1b. b Annotated aeromagnetic anomaly map. Dotted black line marks edge of Southern Mawson Province. Solid black line separates Pensacola Embayment and PolarGAP Provinces. Blue line in CTAM marks exposed (solid) and inferred (dashed) edge of Archean rocks20. White outlines mark anomalies discussed in the text. Other features as in Fig. 1b. c Bouguer gravity anomaly map. d Preferred interpretive sketch. Basement provinces in grey and Pensacola Embayment in purple. Red bodies interpreted Ross intrusions. Yellow lines and arrows indicate Neoproterozoic rift margin segments and linking transfer fault. Note geometry of junction between CTAM rifted margin and proposed transfer fault (?) is unconstrained. e Alternative dextral model for formation of the Pensacola Embayment.
