NORTH AMERICA*
FIG. 1
Labrador
Sea
Superior
le
vil
en
Gr
s
c
ala
p
Ap
n
hia
Bermuda
Fig. 4
Near-surface data [nT]
–3700 –100
–50
–20
–10 –6
0
6 10
20
50
100 5300
20
50
100
–100
–50
–20
–10 –5
0
5 10
z110307OGJxja01
Model data [nT]
*Compare with the map of North Americ basement (Wilko, 2008) to identify patterns associated with ancient provinces such as Superior, Grenville, Appalachians on the
mainland and note the contrast with the extended offshore region (Fig. 4).
Source: After Korhonen et al., 2007.
EUROPE*
FIG. 2
Fennoscandinavian Shield
TeisseyreTornquist Line
*Note the contrast in magnetic pattern between the crystalline basement of the Fennoscandinavian Shield to the northeast and fragmented Europe southwest of the Tornquist Line, a major fault system.
z110307OGJxja02
Europe
SOUTH ALANTIC*
FIG. 3
Africa
South America
Lula
Sugar
Loaf-Carioca
Santos basin
Brazil
z110307OGJxja03
Falklands
*Note the large extensions of the magnetic signature of South America and Africa below the ocean.
EASTERN NORTH AMERICA*
FIG. 4
NW
SE
SW
C.O.S.T.
Shore line
NE
Neogene
U Cret - Pal
Mid. JJ-Early KK
5
Pre-Mezozoic
basement
Salt basin
10
Baltimore
Canyon
15
Post-rift
unconformity
Rift
basin
Carolina
Trough
20
311 Miles
500 km
Blake Plateau
V/E x10
0
Miles
62.1
0
Km
100
*Structure and stratigraphy of the offshore area (James, 2009, Fig. 6; after Benson & Doyle, 1988, and Manspeizer, 1988-inset).
Source: After Korhonen et al., 2007.
Wedge
z110307OGJxja04
Km
Section
EAST AFRICA*
FIG. 5
Somalia
Kenya
Windjammer
Barquentine
Lagosta
Ironclad
Bemolanga
Tanzania
Tsimiroro
Mozambique
Mozambique
Channel
*Shows occurrences of gas on the mainland and offshore and heavy oil fields on Mozambique.
Madagascar
z110307OGJxja05
PandeTemane
*Approximate Pangean reconstruction after removal of the central striped area of Fig. 3.
FIG. 6
z110307OGJxja06
SOUTH AMERICA-AFRICA*