More information:

Luchs, T., Brey, G.P., Gerdes, A. and Höfer, H.E. 2013. The lithospheric mantle underneath the Gibeon Kimberlite field (Namibia): A mix of old and young components—Evidence from Lu–Hf and Sm–Nd isotope systematics. Precambrian Research, 231: 263–276


Description:

The lithospheric mantle underneath the Gibeon Kimberlite field (Namibia): A mix of old and young components—Evidence from Lu–Hf and Sm–Nd isotope systematics.

Summary / Notes:

We have determined major and trace elements and the Sm–Nd and Lu–Hf isotope systematics in minerals of 19 garnet peridotites from the Gibeon Townlands and Hanaus kimberlite pipes. These are situated within the mixed age Proterozoic to Archean (?) Rehoboth crustal province in Namibia. Our geothermobarometric results confirm previous results on the similarities of the conductive geothermal gradients underneath the Rehoboth province and the Kaapvaal craton and also that the Rehoboth mantle must have lost a significant proportion of its lithosphere. We distinguish peridotites with sinusoidal REE patterns similar as they commonly occur in the Archean Kaapvaal subcratonic mantle (named by us as σ type peridotites) and peridotites with LREE depleted patterns typical for the Proterozoic (N type). Both types are reenriched restites of partial melting processes. Time constraints for these processes can be found from the Sm–Nd and Lu–Hf isotope systems and from published Re–Os data. The Lu–Hf isotope system dates an enrichment event of a highly depleted mantle (ɛHf = +29.4) for the σ-peridotites at around 1.9 Ga. Enrichment for the N-peridotites occurred between 850 and 900 Ma ago in a slightly depleted mantle (ɛHf = + 3.3). The last enrichment event at around 460 Ma may be recorded by the Sm–Nd system in the σ-peridotites. A published Re–Os isotope data set from the neighbouring Louwrensia pipe reports Re depletion ages up to 2.1 Ga (chondritic Re–Os Earth model) and Re model ages of 2.4 Ga. The latter ages agree with estimates for the timing of first partial melting for the σ peridotites as deduced from the Lu–Hf isotope system combined with model calculations for partial melting. Keywords: Namibian kimberlites, Proterozoic mantle, Mantle metasomatism, Lu–Hf isotopes, Sm–Nd isotopes.

Year: 2013

Type: Journal Article

URL: http://www.sciencedirect.com/science/article/pii/S0301926813000922


Top 50 related results:

You may also be interested in the following items which are on a similar or related topic, listed in order of similarity.

Results per page:

Results: 1 to 50 of 50

To FILTER: Use the pale green row to filter the results on this page. Type in text or select from the year list.

Rows matching filter(s): All
What is this row? 
Data titleYearOriginFile typeDownloadkml/kmz
Smith, R.M.H. and Mason, T.R. 1998. Sedimentary environments and trace fossils of tertiary Oasis deposits in the Central Namib Desert, Namibia. Palaios, 13(6): 547-559
  » More info & related results
1998DRFN DLIBJournal Article
Bierman, P.R. and Caffee, M. 2001. Slow Rates of Rock Surface Erosion and Sediment Production across the Namib Desert and Escarpment, Southern Africa. American Journal of Science, 301: 326–358
  » More info & related results
2001 Journal Article2.65 mb pdf
Preview
Martin, H. 1964. Beobachtungen zum Problem der jung-Präkambrischen glazialen Ablagerungen in Südwestafrika. Geologische Rundschau, 54(1): 115-127
  » More info & related results
1964 Journal Article
Brunotte, E., Maurer, B., Fischer, P., Lomax, J. and Sander, H. 2009. A sequence of fluvial and aeolian deposits (desert loess) and palaeosoils covering the last 60 ka in the Opuwo basin (Kaokoland/Kunene Region, Namibia) based on luminescence dating. Quaternary International, 196(1–2): 71–85
  » More info & related results
2009 Journal Article
Brunotte, E. and Sander, H. 2000. Loess accumulation and soil formation in Kaokoland (Northern Namibia) as indicators of Quaternary climatic change. Global and Planetary Change, 26(1–3): 67–75
  » More info & related results
2000 Journal Article
Diester-Haass, L., Heine, K., Rothe, P. and Schrader, H. 1988. Late Quaternary history of continental climate and the Benguela Current off South West Africa. Palaeogeography, Palaeoclimatology, Palaeoecology, 65(1–2): 81–91
  » More info & related results
1988 Journal Article
Leggett, K., Fennessy, J. and Schneider, S. 2005. Flood-borne sediment analysis of the Hoanib River, northwestern Namibia. Journal of Arid Environments, 62(4): 587–596
  » More info & related results
2005 Journal Article
Embley, R.W. and Morley, J.J. 1980. Quaternary sedimentation and paleoenvironmental studies off Namibia (South-West Africa). Marine Geology, 36(3–4): 183–204
  » More info & related results
1980 Journal Article
Germs, G.J.B. 1995. The Neoproterozoic of southwestern Africa, with emphasis on platform stratigraphy and paleontology. Precambrian Research, 73(1–4): 137–151
  » More info & related results
1995 Journal Article
Wanke, H. und Wanke, A. 2007. Lithostratigraphy of the Kalahari Group in northeastern Namibia. Journal of African Earth Sciences, 48(5): 314–328
  » More info & related results
2007 Journal Article
Davies, C.J. and Coward, M.P. 1982. The structural evolution of the Gariep arc in southern Namibia (South-West Africa). Precambrian Research, 17(3–4): 173–198
  » More info & related results
1982 Journal Article
Buch, M.W. und Rose, D. 1996. Mineralogy and geochemistry of the sediments of the Etosha Pan Region in northern Namibia: a reconstruction of the depositional environment. Journal of African Earth Sciences, 22(3): 355–378
  » More info & related results
2006 Journal Article
Saylor, B.Z., Grotzinger, J.P. and Germs, G.J.B. 1995. Sequence stratigraphy and sedimentology of the Neoproterozoic Kuibis and Schwarzrand Subgroups (Nama Group), southwestern Namibia. Precambrian Research, 73(1–4): 153–171
  » More info & related results
1995 Journal Article
Stanistreet, I.G., Kukla, P.A. and Henry, G. 1991. Sedimentary basinal responses to a Late Precambrian Wilson Cycle: the Damara Orogen and Nama Foreland, Namibia. Journal of African Earth Sciences (and the Middle East), 13(1): 141–156
  » More info & related results
1991 Journal Article
Dupont, L. and Behling, H. 2006. Land–sea linkages during deglaciation: High-resolution records from the eastern Atlantic off the coast of Namibia and Angola (ODP site 1078). Quaternary International, 148(1): 19–28
  » More info & related results
2006 Journal Article
Bremner, J.M. and Willis, J.P. 1993. Mineralogy and geochemistry of the clay fraction of sediments from the Namibian continental margin and the adjacent hinterland. Marine Geology, 115(1–2): 85–116
  » More info & related results
1993 Journal Article
Buzer, J.S. and Sym, S.D. 1983. Diatoms and pollen in a trial core from Sandwich Harbour, South West Africa (Namibia). British Phycological Journal, 18(2): 121-129
  » More info & related results
1983 Journal Article
Eitel, B., Kadereit, A., Lomax, J., Hilgers, A., Blümel, W-D., Hüser, K. A chronology of fluvial dynamics of the Hoanib River, NW-Namibia, based on optically stimulated luminescence dating
  » More info & related results
 Poster2.98 mb pdf
Preview
Hipondoka, M.H.T., Busche, D. and Kempf, J. 2004. Source of Lunette dune sediments: A geomorphic terrain analysis apprach in Etosha National Park, Namibia. Erdkunde, 58: 212-220
  » More info & related results
2004 Journal Article213 kb pdf
Preview
Hipondoka, M.H.T., Jousse, H., Kempf, J. and Busche, D. 2006. Fossil evidence for perennial lake conditions during the Holocene at Etosha Pan, Namibia. South African Journal of Science, 102: 93-95
  » More info & related results
2006 Journal Article526 kb pdf
Preview
Pickford, M., Senut, B., Hipondoka, M., Person, A., Segalen, L., Plet, C., Jousse, H., Mein, P., Guerin, C., Morales, J. and Mourer-Chauvire, C. 2009. Mio-Plio-Pleistocene geology and palaeobiology of Etosha Pan, Namibia. Communications of the Geological Survey of Namibia, 14: 95-139
  » More info & related results
2009 Journal Article4.71 mb pdf
Preview
Brook, G.A., Cherkinsky, A., Railsback, L.B., Marais, E. and Hipondoka, M.H.T. 2013. 14C Dating of Organic Residue and Carbonate from Stromatolites in Etosha Pan, Namibia: 14C Reservoir Effect, Correction of Published Ages, and Evidence of >8-m-Deep Lake During the Late Pleistocene. In: Jull, A.J.T. and Hatté, C. (eds). Proceedings of the 21st International Radiocarbon Conference. Radiocarbon, 55(2–3): 1156–1163
  » More info & related results
2013 Journal Article217 kb pdf
Preview
Anderson, L., Maslin, M.A., Jansen, F., Lin, H., Pufahl, P.K., Pérez, M., Brüchert, V. and Vidal, L. 1998. Lithostratigraphic Summary For Leg 175: Angola-Benguela Upwelling System. Proceedings of the Ocean Drilling Program, Initial Reports, 175: 533-542
  » More info & related results
1998 Journal Article707 kb pdf
Preview
Bluck, B.J., Ward, J.D., Cartwright, J. and Swart, R. 2007. The Orange River, southern Africa: an extreme example of a wave-dominated sediment dispersal system in the South Atlantic Ocean. Journal of the Geological Society, 164: 341–351
  » More info & related results
2007 Journal Article715 kb pdf
Preview
Eitel, B., Kadereit, A., Blümel, W.D., Hüser, K., Lomax, J. and Hilgers, A. 2006. Environmental changes at the eastern Namib Desert margin before and after the Last Glacial Maximum: New evidence from fluvial deposits in the upper Hoanib River catchment, northwestern Namibia. Palaeogeography, Palaeoclimatology, Palaeoecology, 234: 201-222
  » More info & related results
2006DRFN DLIBJournal Article1.36 mb pdf
Preview
Gingele, F.X. 1996. Holocene climatic optimum in Southwest Africa—evidence from the marine clay mineral record. Palaeogeography, Palaeoclimatology, Palaeoecology, 122(1-4): 77-87
  » More info & related results
1996DRFN DLIBJournal Article
Jensen, S., Saylor, B.Z., Gehling, J.G. and Germs, G.J.B. 2000. Complex trace fossils from the terminal Proterozoic of Namibia. Geology, 28(2): 143-146
  » More info & related results
2000 Journal Article
Jensen, S. and Runnegar, B.N. 2005. A complex trace fossil from the Spitskop Member (terminal Ediacaran–? Lower Cambrian) of southern Namibia. Geological Magazine, 142(5): 561-569
  » More info & related results
2005 Journal Article
Wilson, J.P., Grotinger, J.P., Fischer, W.W., Hand, K.P., Jensen, S., Knoll, A.H., Abelson, J., Metz, J.M., McLoughlin, N., Cohen, P.A. and Tice, M.M. 2012. Deep-Water incised valley deposits at the Ediacaran-Cambrian Boundary in southern Namibia contain abundant Treptichnus Pedum. Palaios, 27(4): 252-273
  » More info & related results
2012 Journal Article
Knetsch, G. 1938. 15. Aus dem Sedimentstammbaum eines Trockengebietes (Beobachtung aus der südlichen Namib, Südwestafrika). Geologische Rundschau, 29(3-5): 334-347
  » More info & related results
1938 Journal Article
Gevers, T.V. 1933. Zur Tektonik des mittleren Südwestafrika. Geologische Rundschau, 24(6): 337-348
  » More info & related results
1933 Journal Article
Preussinger, H. 1990. Host-rock geology of the metamorphosed massive sulfide deposits at Gorob in the Pan-African Damara Orogen, Namibia. Journal of African Earth Sciences (and the Middle East), 10(4): 717–732
  » More info & related results
1990 Journal Article
Rouby, D., Bonnet, S., Guillocheau, F., Gallagher, K., Robin, C., Biancotto, F., Dauteuil, O. and Braun, J. 2009. Sediment supply to the Orange sedimentary system over the last 150 My: An evaluation from sedimentation/denudation balance. Marine and Petroleum Geology, 26(6): 782–794
  » More info & related results
2009 Journal Article
Pulfrich, A. and Branch, G.M. 2013. Effects of sediment discharge from Namibian diamond mines on intertidal and subtidal rocky-reef communities and the rock lobster Jasus lalandii. Estuarine, Coastal and Shelf Science, In Press, Corrected Proof
  » More info & related results
2013 Journal Article
Stollhofen, H., Stanistreet, I.G., von Hagke, C. and Nguno, A. 2014. Pliocene-Pleistocene climate change, sea level and uplift history recorded by the Horingbaai fan-delta, NW Namibia. Sedimentary Geology, 309: 15–32
  » More info & related results
2014 Journal Article9.33 mb pdf
Preview
Krapf, C.B.E., Stanistreet, I.G. and Stollhofen, H. 2005. Morphology and Fluvio-Aeolian Interaction of the Tropical Latitude, Ephemeral Braided-River Dominated Koigab Fan, North-West Namibia, in Fluvial Sedimentology VII (eds M. D. Blum, S. B. Marriott and S. F. Leclair), Blackwell Publishing Ltd., Oxford, UK
  » More info & related results
2005 Book, Book Section, Booklet
Brook, G.A., Srivastava, P. and Marais, E. 2006. Characteristics and OSL minimum ages of relict fluvial deposits near Sossus Vlei, Tsauchab River, Namibia, and a regional climate record for the last 30 ka. Journal of Quaternary Science, 21(4): 347–362
  » More info & related results
2006 Journal Article
Compton, J.S. 2007. Holocene evolution of the Anichab Pan on the south-west coast of Namibia. Sedimentology, 54(1): 55–70
  » More info & related results
2007 Journal Article
Lancaster, N. 2014. Dune systems of the Namib Desert – a spatial and temporal perspective. Transactions of the Royal Society of South Africa
  » More info & related results
2014 Journal Article
Wiggs, G.F.S., Bullard, J.E., Garvey, B. and Castro, I. 2002. Interactions Between Airflow and Valley Topography with Implications for Aeolian Sediment Transport. Physical Geography, 23(5): 366-380
  » More info & related results
2002 Journal Article
Miller, R. McG. 1992. The Etjo and Kalahari sediments of the Owambo Basin. Abstract: Kalahari Symposium 1992
  » More info & related results
1992 Report2.78 mb pdf
Preview
Namcor. 1998. Regional structural elements and sedimentary basins - Namibia 3rd licencing round
  » More info & related results
1998 Poster635 kb pdf
Preview
Rust, U. 1999. River-end deposits along the Hoanib River, northern Namib: archives of Late Holocene climatic variation on a subregional scale. South African Journal of Science, 95(4): 205-206
  » More info & related results
1999 Journal Article540 kb pdf
Preview
Stone, A., Bateman, M.D. and Thomas, D.S.G. 2016. Rapid assessment of Namib Sand Sea sediment chronologies? Testing a portable luminescence reader against full OSL dating. Quaternary International, 404(B): 200–201
  » More info & related results
2016 Journal Article
Gingele, F.X. 1996. Holocene climatic optimum in Southwest Africa-evidence from the marine clay mineral record. Palaeogeography, Palaeoclimatology, Palaeoecology, 122: 77-87
  » More info & related results
1996DRFN DLIBJournal Article
Marker, M.E. 1979. Relict fluvial terraces on the Tsondab Flats, Namibia. Journal of Arid Enviroments, 2(2): 113-117
  » More info & related results
1979DRFN DLIBJournal Article2.69 mb pdf
Preview
Marker, M.E. 1983. Fluvial deposits of the middle Kuiseb valley, Namibia. Journal of Arid Environments, 6(4): 333-348
  » More info & related results
1983DRFN DLIBJournal Article11.11 mb pdf
Preview
Preussinger, H., Maiden, K. and Okrusch, M. 1987. Contrasting styles of sedimentation in metasediments of the Kuiseb formation near Gorob, SWA/Namibia. Communications of the Geological Survey of South West Africa/Namibia, 3: 105-109
  » More info & related results
1987DRFN DLIB4.3 mb pdf
Preview
Morales, J., Senut, B. and Pickford, M. 2011. Crocuta dietrichi from Meob, Namibia: implications for the age of the Tsondab Sandstone in the coastal part of the Namib Desert. Estudios Geologicos, 67(2): 207-215
  » More info & related results
2011 Journal Article191 kb pdf
Preview
Meyer, R. 1997. Fluvial and Aeolian coastal sedimentation processes and their relation to the condition of the Swakopmund beaches and the encroachment of dunes from the south towards Swakopmund. Appendix 6: Specialist Report - Coastal Sedimentation Processes
  » More info & related results
1997 Report5.7 mb pdf
Preview

» Links to useful free software for working with shapefiles, kml and kmz files, pdf files and more.