Encyclopedia of Geobiology

2011 Edition
| Editors: Joachim Reitner, Volker Thiel


  • Marta Rodríguez-Martínez
  • Christine Heim
  • Nadia-Valérie Quéric
  • Joachim Reitner
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-9212-1_94


Colloform limonitic crusts; Frutexites crusts; Frutexites-like forms; Frutexites microstromatolite; Frutexites tuffs; Haematitic/ferruginous/iron microstromatolites; Iron dendritic aggregates; Iron shrubs; Pillar-shaped microstromatolites


Frutexites is a problematic microfossil rich in iron. From a taxonomic point of view, only five species have been figured ( Frutexites arboriformis, Maslov, 1960; F. microstroma, Walter and Awramik, 1979; Frutexites sp. 1, Frutexites sp. 2, and New gen. 3, Tsien, 1979), although the authors mostly use the term Frutexites sensu lato. The genus Frutexites was coined by Maslov ( 1960) in order to describe submillimeter-sized, iron-rich, and subordinate calcite microfossils (Figure 1). Frutexites have a dendritic shape formed by divergently branched microcolumns. The height and width of microcolumns as well as their composition and microstructure can vary (Table 1). The preservation of microstructure is strongly controlled by its...


Lower Cambrian Ferromanganese Crust Oman Mountain Coralline Sponge Neptunian Dike 
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  1. Böhm, F., and Brachert, T. C., 1993. Deep-water stromatolites and Frutexites Maslov from the Early and Middle Jurassic of S-Germany and Austria. Facies, 28, 145–168.CrossRefGoogle Scholar
  2. Cavalazzi, B., Barbieri, R., and Ori, G., 2007. Chemosynthetic microbialites in the Devonian carbonate mounds of Hamar Laghdad (Anti-Atlas, Morocco). Sedimentary Geology, 200, 73–88.CrossRefGoogle Scholar
  3. Chafetz, H. S., Akdim, B., Julia, R., and Reid, A., 1998. Mn- and Fe-rich black travertine shrubs: bacterially (and nanobacterially) induced precipitates. Journal of Sedimentary Research, 68, 404–412.CrossRefGoogle Scholar
  4. Gischler, E., 1996. Late Devonian-Early Carboniferous deep-water coral assemblages and sedimentation on a Devonian seamount: Iberg Reef, Harz Mts., Germany. Palaeogeography, Palaeoclimatology, Palaeoecology, 123, 297–322.CrossRefGoogle Scholar
  5. Heim, C., Simon, K., Queric, N. -V., and Thiel, V., 2007. Mineralized microbial mats with extreme lanthanum enrichments in the tunnel of Äspö, Sweden. Geochimica et Cosmochimica Acta, Goldschmidt Abstracts 2007 – H, A390.Google Scholar
  6. Hofmann, J., and Grotzinger, J. P., 1985. Shelf-facies microbiotas from the Odjick and Rocknest formations (Epworth Group; 1.89 Ga), northwestern Canada. Canadian Journal of Earth Sciences, 22, 1781–1792.CrossRefGoogle Scholar
  7. Horodyski, R. J., 1975. Stromatolites of the Lower Missoula Group (middle Proterozoic), Belt Supergroup, Glaciar National Park, Montana. Precambrian Research, 2, 215–254.CrossRefGoogle Scholar
  8. Hurley, N. F., and Van der Voo, R., 1990. Magnetostratigraphy, Late Devonian iridium anomaly, and impact hypotheses. Geology, 18, 291–294.CrossRefGoogle Scholar
  9. Jach, R., and Dudek, T., 2005. Origin of a Toarcian manganese carbonate/silicate deposit from the Krížna unit, Tatra Mountains, Poland. Chemical Geology, 224, 136–152.CrossRefGoogle Scholar
  10. Kazmierczak, J., and Kempe, S., 2006. Genuine modern analogues of Precambrian stromatolites from caldera lakes of Niuafo‘ou Island, Tonga. Naturwissenschaften, 93, 119–126.CrossRefGoogle Scholar
  11. Koban, C. G., and Schweigert, G., 1993. Microbial origin of travertine fabrics – two examples from southern Germany (Pleistocene Stuttgart travertines and Miocene Riedoschingen travertine). Facies, 29, 251–264.CrossRefGoogle Scholar
  12. Korn, H., and Martin, H., 1959. Gravity tectonics in the Naukluft Mountains of South West Africa. Bulletin of Geological Society of America, 70, 1047–1078.CrossRefGoogle Scholar
  13. Mamet, B., and Préat, A., 2006. Iron-bacterial mediation in Phanerozoic red limestones: State of the art. Sedimentary Geology, 185, 147–157.CrossRefGoogle Scholar
  14. Maslov, V. P., 1960. Stromatolites. Trudy Instituta geologicheskikh nauk Akademiya nauk SSR, 41, 188.Google Scholar
  15. Miller, R. McG., 2008. The Geology of Namibia. Windhoek: Geological Survey of Namibia, Vol. 2.Google Scholar
  16. Myrow, P. M., and Coniglio, M. 1991. Origin and diagenesis of cryptobiontic Frutexites in the Chapel island Formation (Vendian to Early Cambrian) of Southeast Newfoundland, Canada. Palaios, 6, 572–585.CrossRefGoogle Scholar
  17. Nicoll, R. S., and Playford, P. E., 1993. Upper Devonian iridium anomalies, conodont zonation and the Frasnian-Famennian boundary in the Canning Basin, Western Australia. Palaeogeography, Palaeoclimatology, Palaeoecology, 104, 105–113.CrossRefGoogle Scholar
  18. Playford, P. E., Cockbain, A. E., Druce, E. C., and Wray, J. L., 1976. Devonian stromatolites from the Canning Basin, Western Australia. In Walter, M. R. (ed.), Stromatolites. Amsterdam: Elsevier, pp. 543–563.CrossRefGoogle Scholar
  19. Playford, P. E., McLaren, D. J., Orth, C. J., Gilmore, J. S., and Goodfellow, W. D., 1984. Iridium anomaly in the Upper Devonian of the Canning Basin, Western Australia. Science, 226, 437–439.CrossRefGoogle Scholar
  20. Reitner, J., Wilmsen, M., and Neuweiler, F., 1995. Cenomanian/Turonian sponge microbialite deep-water hardground community (Liencres, Northern Spain). Facies, 32, 203–212.CrossRefGoogle Scholar
  21. Riding, R., 1991. Calcified cyanobacteria. In Riding, R. (ed.), Calcareous Algae and Stromatolites. Berlin: Springer, pp. 55–87.CrossRefGoogle Scholar
  22. Rodríguez-Martínez, M., Heim, C., Simon, K., Reitner, J., and Zilla, T., (in press). Tolypammina gregaria Wendt-Frutexites assemblage and ferromanganese crusts: a coupled nutrient-metal interplay in the Carnian sedimentary condensed record of Hallstatt Facies (Austria). Lecture Notes in Earth Sciences Google Scholar
  23. Tsien, H. H., 1979. Paleoecology of algal-bearing facies in the Devonian (Couvirtian to Frasnian) Reef complexes of Belgium. Palaegeography, Palaeoclimatology, Palaeoecology, 27, 103–127.CrossRefGoogle Scholar
  24. Walter, M. R., and Awramik, S. M., 1979. Frutexites from stromatolites of the Gunflint iron formation of Canada, and its biological affinities. Precambrian Research, 9, 23–33.CrossRefGoogle Scholar
  25. Wendt, J., 1969. Foraminiferen-‘Riffe’ im karnischen Hallstätter Kalk des Feuerkogels (Steiermark, Österreich). Paläontologische Zeitschrift, 43, 177–193.Google Scholar
  26. Wendt, J., 1988. Condensed carbonate sedimentation in the late Devonian of the eastern anti-Atlas (Morocco). Eclogae geologicae Helvetica, 81, 155–173.Google Scholar
  27. Woods, A. D., and Baud, A., 2008. Anachronistic facies from a drowned Lower Triassic carbonate platform: Lower member of the Alwa Formation (Ba’id Exotic), Oman Mountains. Sedimentary Geology, 209, 1–14.CrossRefGoogle Scholar

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© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Marta Rodríguez-Martínez
    • 1
  • Christine Heim
    • 2
  • Nadia-Valérie Quéric
    • 2
  • Joachim Reitner
    • 2
  1. 1.Departamento de Geología Facultad de BiologíaUniversidad de AlcaláAlcalá de HenaresSpain
  2. 2.Geobiology Group Geoscience CenterUniversity of GöttingenGöttingenGermany