Francisco Edson M. Gomes Geologist CPRM Geological Survey of Brazil
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1 Francisco Edson M. Gomes Geologist CPRM Geological Survey of Brazil
2 Area
3 BACKGROUND The Atlas of the South Atlantic Ocean Data organized in GIS was designed by the Geological Survey of Brazil (CPRM) and the International Seabed Authority (ISA). It integrates all available data on the geology, mineral resources, environmental issues, and geographic information of the South and Equatorial Atlantic Ocean.
4 Products GIS PROJECT Structural map MORPHOTECTONIC MAP
5 Free-Air Anomalies Plate Boundaries Vo l c a n o e s Cobaltiferous Crusts Ocean-Continent Transitions Polymetallic Sulphides Age of oceanic lithosphere Salt boundary Structural elements ANGOLA-BRAZIL GEOTRANSECT DATA DIAPIR ISOPACHS OCEANIC TOP OF BASEMENT GRID EARTHQUAKE EPICENTERS MINERAL OCCURRENCES SLAB DEPTHS GEBCO_08 GRID SURFICIAL SEDIMENTS FACIES (Brazilian Continental Shelf) Heat Flow Bouguer Anomalies Hydrothermal vents Seamount biological data Sediment Thickness Offshore brazilian protected areas Large Igneous Provinces - LIPs AXES OF ACCRETIONARY RIDGES Isopachs Morphotectonic features POTENTIAL MINERAL RESOURCES
6 Data Source: Muller, R. D., M. Sdrolias, C. Gaina, and W. R. Roest (2008). Age, spreading rates, and spreading asymmetry of the world's ocean crust, Geochem. Geophys. Geosyst., 9, Q04006, doi: /2007gc Geoprocessing and geological adjustments: Francisco Edson M. Gomes Geological Survey of Brazil
7 Tectonic elements Fracture zone Compiled by: Francisco Edson M. Gomes Geological Survey of Brazil. COB Continental Slope
8 Morphotectonic features
9 Source of grid: Geoprocessing: Francisco Edson M. Gomes
10 Free-air anomalies Source of grid: Sandwell, D. T., and W. H. F. Smith (2009), Geoprocessing: Francisco Edson M. Gomes
11 Bouguer anomalies Source of grid: Sandwell, D. T., and W. H. F. Smith (2009), Correção Bouguer: Ivo Pessanha
12 Oceanic Top-Basement Source of grid: Gebco, NGDC,NESDIS, NOAA, U.S Department of Commerce Geoprocessing: Francisco Edson M. Gomes
13 Slope Image derived from Gebco-08 grid: Geoprocessing: Francisco Edson M. Gomes
14 Magnetic anomalies Image derived from EMAG2 grid available at and EMAG2 (2-arc-minute resolution) Geoprocessing: Francisco Edson M. Gomes
15 Sediment thickness Source of grid: National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Geoprocessing: Francisco Edson M. Gomes
16 Heat flow Source of csv files: lgeoprocessing: Francisco Edson M. Gomes
17 Contours of sediment thickness Source of grid: National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Geoprocessing: Francisco Edson M. Gomes
18 Source: PETROBRAS Status: Available only on the coast of Brazil
19 Large Igneous Provinces Serra Leone Rise Parana Flood Basalt Vitoria-Trindade Ridge Etendeka Volcanism Status: completed Georgia Rise Maritime Source: University of Texas Institute of Geophysics. Modified by Francisco Edson M. Gomes Continental
20 Source: University of Texas Institute of Geophysics Modified by Francisco Edson M. Gomes Sedimentary basins Status: missing complementary data on African side
21 Source: PLATES Project, University of Texas Institute of Geophysics. Modified by Francisco Edson M. Gomes Present day plate tectonic boundaries South American Plate African Plate Scotia Sea Plate South Sandwich Microplate Antarctic Plate
22 Mineral Resources Polymetallic Nodules Ferromanganese crust occurences
23 Drilling sites Deep Sea Drilling Project (DSDP) Ocean Drilling Program (ODP)
24 Hydrothermal vent Volcano Hot spot Sources: Smithsonian Institution and ISA
25 Status: completed Source: USGS
26 -15-10
27 -15-10
28 Samples collected between 1981 and 1987
29
30 -15-10
31 -10-15
32 -10-15
33 -10-15
34 -10-15
35 Francisco Edson M. Gomes
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