Figure 5.
Gravity profiles across Midcontinent Rift (MCR), Fort Wayne Rift (FWR), East Continent Gravity High (ECGH), and Grenville Front (GF) in Canada at locations shown. The gravity highs along the FWR and ECGH seem to be the continuation of the east arm because they are similar in dimensions and magnitude to those elsewhere along the MCR in showing a distinct central high. No similar high occurs across the Grenville Front.