Key-ring structure gradients and sheath folds in the Goantagab Domain of NW Namibia

Journal of Structural Geology

Volumn 33, Issue 3, 2011, Pages 280-291

  Passchier, Cees ^a   Trouw, Rudolph ^b   Coelho, Sara ^a   de Kemp, Eric ^c   Schmitt, Renata ^b  

^a JOHANNES GUTENBERG UNIVERSITY   (Germany)

^b FEDERAL UNIVERSITY OF RIO DE JANEIRO   (Brazil)

^c GEOLOGICAL SURVEY OF CANADA   (Canada)

Author keywords

Deformation phase; Foliation; Namibia; Sheath fold

Indexed keywords

COMPLEX DEFORMATION; DEFORMATION PHASE; FLOW CONDITION; FOLIATION; NAMIBIA; NEW STRUCTURES; NON-COAXIAL FLOWS; RING STRUCTURES; SHEATH FOLD; TECTONIC EVENTS;

DEFORMATION;

STRUCTURAL GEOLOGY;

DEFORMATION; FOLDING; FOLIATION; STRUCTURAL GEOLOGY; TECTONIC SETTING; TECTONIC STRUCTURE;

NAMIBIA;

EID: 79951681153     PISSN: 01918141     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jsg.2010.12.005     Document Type: Article

References (37)

1. Alsop G.I., Holdsworth R.E. The geometry and topology of natural sheath folds: a new tool for structural analysis. Journal of Structural Geology 2004, 26:1561-1589.
2. Alsop G.I., Holdsworth R.E. Sheath folds as discriminators of bulk strain type. Journal of Structural Geology 2006, 28:1588-1606.
3. Alsop G.I., Holdsworth R.E., McCaffrey K.J.W. Scale invariant sheath folds in salt, sediments and shear zones. Journal of Structural Geology 2007, 29:1585-1604.
4. Alström P. Species concepts and their application: insights from the genera Seicercus and Phylloscopus. Acta Zoologica Sinica 2006, (Suppl. 52):429-434.
5. Bell T.H., Reinhardt J., Hammond R.L. Multiple foliation development during thrusting and synchronous formation of vertical shear zones. Journal of Structural Geology 1992, 14:791-805.
6. Coelho S., Passchier C., Grasemann B. Geometric description of flanking structures. Journal of Structural Geology 2005, 27:597-606.
7. Goscombe B.D., Trouw R.A.J. The geometry of folded tectonic shear sense indicators. Journal of Structural Geology 1999, 21:123-127.
8. Goscombe B., Hand M., Gray D.R. Structure of the Kaoko Belt, Namibia: progressive evolution of a classic transpressional orogen. Journal of Structural Geology 2003, 25:1049-1081.
9. Goscombe B., Hand M., Gray D.R., Mawby J. The metamorphic architecture of a transpressional orogen: the Kaoko Belt, Namibia. Journal of Petrology 2003, 44:679-711.
10. Goscombe B., Gray D.R., Hand M. Variation in metamorphic style along the northern margin of the Damara Orogen, Namibia. Journal of Petrology 2004, 45:1261-1295.
11. Goscombe B., Gray D.R., Hand M. Extrusional tectonics in the core of a transpressional orogen: the Kaoko Belt, Namibia. Journal of Petrology 2005, 46:1203-1241.
12. 39Ar thermochronology of the Pan African Damara Orogen, Namibia, with implications for tectonothermal and geodynamic evolution. Precambrian Research 2006, 150:49-72.
13. Gray D.R., Foster D.A., Meert J.G., Goscombe B.D., Armstrong R., Trouw R.A.J., Passchier C.W. A Damara orogen perspective on the assembly of southwestern Gondwana. Geological Society, London, Special Publications 2008, 294:257-278.
14. Hobbs B.E., Means W.D., Williams P.F. An Outline of Structural Geology 1976, Wiley, New York.
15. Hoffman P.F., Halverson G.P. Otavi group of the Northern Platform and the Northern margin zone. Handbook on the Geology of Namibia 2008, Namibian Geological Survey. R.M. Miller (Ed.).
16. Hoffman P.F., Swart R., Eckhardt E.F., Guowei H. Damara Orogen of Northwest Namibia. Geological Excursion Guide of the Geological Survey of Namibia. Windhoek 1994, Geological Survey of Namibia, p. 55.
17. Hoffmann K.-H., Condon D.J., Bowring S.A., Crowley J.L. U-Pb zircon date from the Neoproterozoic Ghaub formation, Namibia: Constraints on Marinoan glaciation. Geology 2004, 32:817-820.
18. Irwin D.E., Irwin J.H., Price T.D. Ring species as bridges between microevolution and speciation. Genetica 2001, 112-113:223-243.
19. Irwin D.E., Bensch S., Price T.D. Speciation in a ring. Nature 2001, 409:333-337.
20. 187Os dating of a Neoproterozoic, post-glacial black shale in Western Canada. Earth and Planetary Science Letters 2004, 222:729-740.
21. Maeder X., Passchier C.W., Trouw R.A.J. Flame foliation: evidence for a schistosity formed normal to the extension direction. Journal of Structural Geology 2007, 29:378-384.
22. Maloof A.C. Superposed folding at the junction of the inland and coastal belts, Damara Orogen, Namibia. Communications of the Geological Survey of Namibia 2000, vol. 12:89-98. R. Miller (Ed.).
23. Marques F.G., Cobbold P.R. Development of highly non-cylindrical folds around rigid inclusions in bulk simple shear regimes: natural examples and experimental modelling. Journal of Structural Geology 1995, 17:589-602.
24. Marshak S., Mitra G. Basic methods of structural geology 1988, Prentice Hall, Englewood Cliffs, New Jersey.
25. Miller R.McG. The Pan-African Damara orogen of South West Namibia, Africa. Geological Society of South Africa Special Publication 1983, vol. 11:431-515. R. Miller McG (Ed.).
26. Paciullo F.V.P., Ribeiro A., Trouw R.A.J., Passchier C.W. Facies and facies association of the siliciclastic Brak River and carbonate Gemsbok formations in the Lower Ugab River valley, Namibia, W. Africa. Journal of African Earth Sciences 2007, 47:121-134.
27. Passchier C.W. Monoclinic model shear zones. Journal of Structural Geology 1998, 20:1121-1137.
28. Passchier C.W., Trouw R.A.J. Microtectonics 2005, Springer-Verlag.
29. Passchier C.W., Trouw R.A.J., Ribeiro A., Paciulo F. Tectonic evolution of the southern Kaoko belt, Namibia. Journal of African Earth Sciences 2002, 35:61-75.
30. Passchier C.W., Trouw R.A.J., Goscombe B., Gray D., Kröner A. Intrusion mechanisms in a turbidite sequence: the Voetspoor and Doros plutons in NW Namibia. Journal of Structural Geology 2007, 29:481-496.
31. Piazolo S., Passchier C.W. Controls on lineation development in low to medium-grade shear zones: a study from the Cap de Creus peninsula, NE Spain. Journal of Structural Geology 2002, 24:25-44.
32. Powell C.McA., Richard M.J. Significance of early foliation at Bermagui, N.S.W., Australia. Journal of Structural Geology 1985, 7:385-400.
33. Ramsay J.G. Folding and Fracturing of Rocks 1967, McGraw-Hill.
34. Ramsay J.G., Huber M.I. The Techniques of Modern Structural Geology 1987, Academic Press.
35. Robin P.Y.F., Cruden A.R. Strain and vorticity patterns in ideally ductile transpression zones. Journal of Structural Geology 1994, 16:447-466.
36. Schmitt, R S., Trouw, R. A. J., Passchier, C. W., Medeiros, S. R., Armstrong, R, submitted for publication. 530 Ma syntectonic syenites and granites in NW Namibia - their relation with collision along the junction of the Damara and Kaoko belts. Gondwana Research.
37. Swart R. The sedimentology of the Zerrissene turbidite system, Damara Orogen, Namibia. Memoir of the Geological Survey of Namibia 1992, 13. p. 54.