Roland Trompette

Geology of Western Gondwana (2000 - 500 Ma)

Pan-African-Brasiliano Aggregation of South America and Africa (translated by A.V.Carozzi, Univ.of Illinois, USA)

• Gebundenes Buch

Produktbeschreibung

In considering the geology of Western Gondwana, this text covers: the Pan-African-Brasiliano cratons; the Pan-African-Brasiliano fold belts; and amosaic of Pan-African-Brasiliano mini-cratons and mino-fold belts: Northeast Brazil and the Central-Western portion of Africa.

Produktdetails

• Verlag: CRC Press
• Seitenzahl: 362
• Erscheinungstermin: 1. Januar 1994
• Englisch
• Abmessung: 254mm x 178mm x 21mm
• Gewicht: 844g
• ISBN-13: 9789054101659
• ISBN-10: 9054101652
• Artikelnr.: 23547409

Autorenporträt

Laboratoire Geosciencesde I'environment, Universited'aix-Marseille, Marseille, France.

Inhaltsangabe

PREFACE
ACKNOWLEDGEMENTS
1 INTRODUCTION
1.1 Subject matter and organization
1.2 Investigated area and time span
1.3 Major structural units or geological provinces
1.3.1 The Amazonian craton and adjacent fold belts
1.3.2 The West
Afdcan craton and adjacent fold belts
1.3.3 The Congo or Zaire
Sao Frangisco craton and adjacent fold belts
1.3.4 The Kalahari craton and adjacent fold belts
1.3.5 The Rio de la Plata craton and adjacent fold belts
1.3.6 The particular case of Northeast Brazil and its African Extension
1.4 Geodynamic evolution of Western Gondwana
1.5 Location of Pan
African
Brasiliano sutures
PART 1: THE PAN
AFRICAN
BRASILIANO CRATONS
2 THE BASEMENT OR INFRASTRUCTURE OF THE PAN
AFRICAN
BRASILIANO CRATONS
2.1 The West
African craton
2.1.1 The Reguibat block
2.1.2 The Man
Leo block and its extension in Brazil
2.1.3 Conclusions
2.2 The Amazonian or Amazon craton
2.2.1 The Guyana or Rio Branco block
2.2.2 The Guapore or Central Brazil block
2.2.3 Conclusions
2.3 The Congo (Zaire)
Sao Francisco craton
2.3.1 The Sao Francisco massif or craton
2.3.2 The Congo or Zaire block or craton
2.4 The Rio de la Plata craton
2.5 The Kalahari or South
African craton
3 LATE EARLY
MIDDLE PROTEROZOIC COVER AND METASEDIMENTARY SEQUENCES 3.1 The West
African craton
3.1.1 The Adrar of Mauritania
3.1.2 TheGourma
3.1.3 The Volta Basin
3.1.4 Conclusions to the study of the Pan
African cover rocks of the West
African craton
3.2 The Amazonian or Amazon craton
3.2.1 The cover rocks of the Amazonian craton north of the 13° south parallel
3.2.2 The southern extension of the Guapore block south of the 13° south parallel
3.2.3 Conclusions to the study of the late Early
Middle
Late Proterozoic sequences
3.3 The Congo (Zaire)
Sao Francisco craton
3.3.1 The Sao Francisco block or craton (Brazil)
3.3.2 The Congo or Zaire block or craton
3.3.3 Conclusions to the study of the Late
Early
Middle
Proterozoic sequences
3.4 The Rio de la Plata craton
3.5 The Western portion ofthe Kalahari craton
PART 2: THE PAN
AFRICAN
BRASILIANO FOLD BELTS
4 DEFINITION, PRESENTATION
5 THE TRANS
S AH ARAN MEGA
OROGEN
5.1 Recognition of a suture
5.2 The slightly tectonized passive margin of the West
African craton
5.3 The highly tectonized passive margin and the active margin
5.3.1 The materials
5.3.2 Geodynamic evolution: Granitization and molassic deposits
5.4 Conclusions
5.5 Extension of the Trans
Saharan mega
fold belt into Brazil
6 THEWEST
CONGO
ARAgUAI AND RIBEIRAFOLD BELTS
6.1 The West
Congo
Araguai fold belt
6.1.1 The metasediments ofthe external units
6.1.2 The materials of the granitized and highly metamorphosed central zone
6.1.3 The structure of the Araguai
West
Congo fold belt and conclusions
6.2 The Ribeira
Mantiqueira fold belt
6.2.1 The materials
6.2.2 The structure
6.2.3 Conclusion: The geodynamic evolution
7 THE BRASILIA FOLD BELT: THE COLLISION BETWEEN THE CONGO
S AO FRANCISCO ANDAMAZONPLATES
7.1 The materials
7.1.1 The basement
7.1.2 The late Early
Middle Proterozoic metasediments
7.1.3 The late Middle and Late Proterozoic metasediments
7.2 Structure and geodynamic evolution
7.3 Conclusions
8 THE DOM FELICIANO, KAOKO (ATLANTIC DAM ARA), GARIEP AND MALMESBURY FOLDBELTS
8.1 TheSouthAmericanDomFelicianofoldbelt
8.1.1 The northern segment or Tyucas fold belt
8.1.2 The median segment in Rio Grande do Sul
8.1.3 The southern segment in Uruguay
8.2 The Kaoko or Atlantic branch of the Damara fold belt
8.3 The Gariep fold belt
8.4 The Malmesbury fold belt
8.5 Conclusions on South
Atlantic Pan
African
Brasiliano fold belts
9 THE DAMARA (S .L.) FOLD BELTS: THE INTERNAL AND THE ATLANTIC OR KAOKO BRANCHES
9.1 The filling of the internal Damara 'geosyncline'
9.2 Structure, metamorphism, and granitoids
9.3 Dynamic evolution: proposed models
9.4 The Kaokoveld fold belt or Atlantic branch of the Damara
10 THE E
W OUBANGUIDE
SERGIPE MEGA
OROGEN
10.1 The Sergipane(s.L) or Sergipe fold belt
10.1.1 The general structure
10.1.2 Thematerials
10.1.3 The geodynamic evolution
10.2 The Oubanguide fold belt
10.2.1 The general structure
10.2.2 Thematerials
10.2.3 The geodynamic evolution
10.3 Conclusions
11 THE FESTOON OF WEST
AFRICAN TRANS SOUTH
AMERICAN FOLD BELTS
11.1 The Pan
African Bassaride and Rokelide fold belts
11.2 The Araguaia and Paraguay fold belts
11.2.1 The Paraguay fold belt
11.2.2 The Araguaia fold belt
11.2.3 Conclusions: Geodynamic models
11.3 The Sierras Pampeanas fold belt in Argentina
11.4 Conclusions
PART 3: AMOSAIC OF PAN
AFRICAN
BRASILIANO MEMI
CRATONS AND MINI
FOLD BELTS: NORTHEAST BRAZIL AND THE CENTRAL
WESTERN PORTION OF AFRICA
12 NORTHEAST BRAZIL AND ITS AFRICAN CONTINUATION: STRUCTURE AND INVOLVED MATERIALS
12.1 The southern lateral or frontal zone
12.2 The central fan
12.2.1 The Serido fold belt, NE Brazil: A type Brasiliano metasedimentaiy sequence?
12.2.2 The Ceara Group, NE Brazil
12.2.3 The'Schist Belts'of Western Nigeria
12.2.4 The central and eastern Hoggar
12.3 The lateral western zone
12.4 The Pemambuco
Patos shear band and its African extension
12.5 The molassic deposits
12.6 The granitoids
12.7 Conclusions
PART 4: C ONCLUSIONS AND DISCUSSIONS
13 THE AMALGAMATION OF WESTERN GONDWANA(~ 600 Ma): ITS SUTURING (~ 500 Ma) WTTHEASTERNGONDWANA
13.1 Pre
Pan
African Brasiliano geological evolution
13.1.1 The example of the West
Africa, Amazon and Rio de la Plata mega
craton
13.1.2 The example of the Congo (Za5fre)
Sao Francisco craton
13.1.3 The infrastructure of some Pan
African
Brasiliano fold belts
13.1.4 Diversity of geodynamic evolution in Western Gondwana
13.2 The Pan
African
Brasiliano sedimentation
13.2.1 Variable ages of metasedimentaiy fills: Comparison with cratonic cover sequences
13.2.2 Rifting, glaciation, and ferruginous sedimentation during the late Proterozoic
13.3 Hie Pan
African
Brasiliano orogeny
13.3.1 The Trans
Saharan mega
fold belt
13.3.2 The set of fold belts fringing the South
Adantic Ocean
13.3.3 The Oubanguide
Seigipe mega
fold belt
13.3.4 The NE
Brazil
Central west
Africa Plate
13.3.5 The festoon of the West
Afncan Trans South
American fold belts
13.3.6 The amalgamation of West Gondwana and its collision with East Gondwana
13.4 Tectonic inheritance in the opening of the South Atlantic
REFERENCES
INDEX.