The South Atlantic Digital Atlas contains all the public domain information relevant to exploration along the West African and South American Atlantic margins in Arcview 9.3. All objects are linked to a table with information such as bibliographic reference or age attached.   All sections and wells are linked to Acrobat pdf files. Maps were constructed by importing scanned tiff images and georeferencing them in Arcview, original georeferenced scanned maps can be provided if required.

South America sections and wells (click on the image for a larger version)	Africa sections and wells (click on the image for a larger version)

This Arcview project contains the following layers in varying amounts of detail:

The project is arranged in the following layers.

ARCVIEW LAYERS

GEOLOGY
SALT STRUCTURE
COMPRESSIVE FOLDS ON CANOPY
SALT EDGE
SALT SEAWARD THRUSTED EDGE
SHALE DIAPIR
ALBIAN CARBONATE RAMP
OCEAN-CONTINENT TRANSITION ZONE
MESOZOIC IGNEOUS DYKE
SEAWARD-DIPPING REFLECTORS
GRABEN
SEDIMENTARY TROUGH
VOLCANIC STRUCTURES AND AGE IN Ma
FISSION TRACK AGES WITH STATISTICS OF MEAN TRACK LENGTH ETC.
ONSHORE GEOLOGY
SHEAR ZONES
BASEMENT STRUCTURAL GRAIN
DEPOCENTRE WITH AGE

FAULTS & STRUCTURES
SYN-RIFT NORMAL FAULT
POST-RIFT LISTRIC FAULT
THRUST
STRIKE-SLIP FAULT
TRANSFER FAULT
INVERSION STRUCTURE
TRANSFORM FAULTS AND OCEANIC FRACTURE ZONE
BASEMENT HIGH
SYN-RIFT GRABEN

RESERVOIRS
CHANNELS WITH AGES
DELTA OUTLINES
TURBIDITE FANS
SYN-RIFT RESERVOIR PRESENCE

SOURCE ROCKS
CRUSTAL THINNING CONTOURS
PRESENT DAY HEAT FLOW CONTOURS
ORGANIC MATURATION LEVELS
PRE-SALT SOURCE ROCK PODS

OIL & GAS
PROSPECTS
GAS HYDRATES
HYDROCARBON SEEPS SAMPLED AT SEABED
HYDROCARBON SLICKS FRAOM SATELLITE IMAGERY
OIL FIELDS
GAS FIELDS
GAS PIPELINES
OIL PIPELINES
COASTLINE
BATHYMETRY

GEOPHYSICS
FREE AIR GRAVITY ANOMALY
MAGNETIC ANOMALY
BOUGUER GRAVITY ANOMALY
RESIDUAL GRAVITY ANOMALY

POLITICAL
POLITICAL BOUNDARY
BLOCK BOUNDARY
WELL LOCATION
CROSS SECTION LOCATION

A movie has been constructed showing the opening of the South Atlantic which focusses on the period 140 Ma to 100 Ma, but runs right through to present day.   The starting position of the continents at 140 ma, has been calculated by restoring the continental edge back to a pre-extension position by balancing published crustal scale sections which show the Moho. The following events were used in the reconstruction.

South Atlantic Opening Events for Earthmoves Arc View Reconstruction Movie

150Ma   Craton positions outlined

147 Ma Syn-Rift E-W basins in Argentina

Main phase extrusion of Parana-and Etendeka and Kwanza flood basalts starts at 139 Ma

Internal rift development Potiguar, Araripe, Reconcavo, Tucano, Benue-Chad Rifts Neocomian 135 Ma

Intrusion of Ponta Gross Dyke swarm at 130 Ma

Stretching starts at 129 Ma

Syn- Rift phase faults and grabens Neocomian to Barremian 129 Ma

Carbonate Banks Lagoa Feia & Toca coquina banks 126 Ma (late Barremian)

Sag basins develop with good source rocks 124 Ma

Syn-Rift faults along along Equatorial margin. 120 Ma

Seaward dipping reflectors and Ocean continent boundaries 118 Ma

Salt Deposition 117 Ma (average of 114- 112.2 Ma (Unpublished Exxon data on Gabon Salt).and 123-124 Ma Angola-Congo Salt (Wynn-Jones Bp. Pers. comm. 2004)

Albian carbonate rafts 105 Ma

Transpressional Fold development along the Equatorial margin 100 Ma

Santos Post Rift faults 80 Ma

Ogooue delta   (70 Ma). Growth faults on Oogue at 60 Ma

Abrolhos and Royal Charlotte volcanics 64 Ma

Niger delta (57 Ma) Growth faults at 45 Ma..Prograding shelf edge shown through time

Campos Post rift faults 50 Ma
Barreirinhas and Para-Maranhao Gravity Fold Belt 50 Ma

Cameroon volcanic line, Principe and onshore volcanics 31 Ma , Sao Tome 16 Ma, Pagada (Anobbon)5 Ma (ages from Lee  et al. 1994)

Congo Fan (30 Ma) inner part only plus post-rift faults on fan itself

Several shelf edges shown Congo Late Delta jump at 5 Ma

Rio Grande Cone (Pelotas Basin) 23 Ma. Post rift faults

Amazon Fan and growth faults on it. (20 Ma).Post rift faults

Orange Fan Delta

Present day bathymetry drops in

The South Atlantic Report
Introduction
South Atlantic Digital Atlas
Examples of Our Maps

Our Clients / Multiclient Reports