Alain R.Y. Préat

Professor
Biogeochemical Modeling of the Earth System
Département des Sciences de la Terre et de l'Environnement
Université Libre de Bruxelles
1050 Bruxelles, Belgium
phone : +32 2 6502212/2246

e-mail :apreat@ulb.ac.be

more details : http://www.ulb.ac.be/.../Preat.html

&

Scientific Collaborator
University of Soran, Iraqi-Kurdistan

Alain Préat

Research Interests

My research concerns sedimentology, geochemistry and diagenesis of carbonate rocks which lead me to travel in many countries in Europe, North Africa, Papua New Guinea and the USA, to conduct field missions. Since the late 90's, I expanded my research interest in addressing the problem of mass extinctions of organisms from the Upper Devonian series across Euramerica (from North America to Poland). I also specialized in microbiological and geochemical analyses of ancient carbonate series developing a sustained collaboration with biologists of the ULB. We are at the origin of a paleoecological model based on the presence of iron-bacterial microfossils, which also involved trips in countries in Europe and North Africa. This model accounts for the red pigmentation of many marble and ornamental stones used in the world. This research also has implications on the emergence of Life from the earliest stages of formation of Earth, as well as in the field of exobiology or extraterrestrial life ... Recently I investigated geological series from the Precambrian in Gabon and Congo. This work in collaboration with colleagues of the BRGM (Orléans) is about the consequences of the appearance of oxygen in the Paleoproterozoic and study of Neoproterozoic glaciations but has an applied side as those rocks are potential reservoir and source of oil (collaborations with oil companies).

I collaborate also with the Royal Institute of Natural Sciences of Belgium to study the magnetic susceptibility of various European Paleozoic series. All these studies allowed me to gain a thorough understanding of carbonates (petrology, micropaleontology, geobiology, geochemistry, stratigraphy, diagenesis) in Precambrian (2.2 Ga and 0.6 Ga), Paleozoic and Mesozoic rocks. Recently (2010) I have established a collaboration with Iraqi Kurdistan as part of a government program to boost scientific research in this country.

I have published over 130 papers and presented over 170 communications within the field of carbonate sedimentology and biogeochemistry to unravel the key parameters on carbonate diagenesis. I have a substantial experience in conducting basin analysis and I have worked on several research and consultancy projects in the field of oil geology. I teach under- and postgraduate courses related to sedimentary geology including field works with students.

Short CV



Teaching

Bachelor (BA) Masters in Geology, Biogeochemistry-Earth System (MA) Lessons out of the Free University of Brussels

Université des Sciences et Technologies de Lille, from 1999-2004 (third cycle - Dynamic Environments and Sedimentary Carbonates, Graduate School - 'Science of Matter, Radiation and Environment)
University of Paris-Sud (Orsay) from 1998 to 2002 University of Joseph Fourrier, Grenoble (2004)

Selected Publications (only peer-reviewed)

Parts of collective works (Books and geological maps)
  1. TAIT J, DELPOMDOR F, PREAT A, TACK L, STRAATHOF G & KANDA V 2011. Neoproterozoic Sequences of the West Congo and Lindi/Ubangi supergroups in the Congo Craton, Central Africa. In: Arnaud, E., Halverson, G. P. & Shields-Zhou, G.A. (eds) The Geological Record of Neoproterozoic glaciations. Geological Society of London, Memoir, 00, 000-000 (in press).
  2. PREAT A, DELPOMDOR F, KOLO K, GILLAN D & PRIAN JP 2011. Stromatolites and cyanobacterial mats in peritidal evaporitive environments in the Neoproterozoic of Bas-Congo (Democratic Republic of Congo) and South Gabon. J Seckbach and VC Tewari (Eds) Stromatolites : Interaction of microbes with sediments, Series : Cellular Origin, Life in Extreme Habitats and Astrobiology, Springer Verlag, DOI 10.1007/978-94-007-0397-1_3, pp.43-63.
  3. PREAT A, DE JONG J, DE RIDDER C & GILLAN D 2011 Possible Fe isotope fractionation during microbiological processing in ancient and modern marine environments. J. Seckbach and VC Tewari (Eds) Stromatolites : Interaction of microbes with sediments, Series : Cellular Origin, Life in Extreme Habitats and Astrobiology, , Springer Verlag, DOI 10.1007/978-94-007-0397-1_29, pp.651-673.
  4. THIÉBLEMONT D., PRIAN J.P., GOUJOU J.C., GOUIN J., TEGYEY M., COCHERIE A., GUERROT C., PRÉAT A., BOULINGUI B., EKOGHA H., KASSADOU A.B. 2009. Notice explicative de la Carte géologique de la République du Gabon à 1/200 000, feuille Fougamou. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  5. BOUTON P., THIEBLEMONT D., SIMO NDOUNZE S., GOUJOU J.C., KASSADOU A. B., WALEMBA A., BOULINGUI B., EKOGHA H., MOUSSAVOU M., LAMBERT A., ROBERTS D., DESCHAMPS Y., PREAT A. 2009. Carte géologique de la République du Gabon à 1/200 000, feuille Franceville - Boumango. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  6. BOUTON P., THIEBLEMONT D., GOUIN J., COCHERIE A., GUERROT C., TEGYEY M., PREAT A., SIMO NDOUNZE S., KASSADOU A. B., BOULINGUI B., EKOGHA H., MOUSSAVOU M. 2009. Notice explicative de la Carte géologique de la République du Gabon à 1/200 000, feuille Franceville - Boumango. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  7. BOUTON P., THIEBLEMONT D., SIMO NDOUNZE S., AGENBACHT A., WALEMBA A., MOUSSAVOU M., LAMBERT A., DESCHAMPS Y., PREAT A. 2009. Carte géologique de la République du Gabon à 1/200 000, feuille Okondja. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  8. BOUTON P., THIEBLEMONT D., GOUIN J., COCHERIE A., GUERROT C., TEGYEY M., PREAT A., SIMO NDOUNZE S., MOUSSAVOU M. 2009. Notice explicative de la Carte géologique de la République du Gabon à 1/200 000, feuille Okondja. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  9. PRIAN J.P., THIEBLEMONT D., PREAT A., WALEMBA A., SIMO NDOUNZE S., GOUJOU J.C., EKOGHA H., KASSADOU A. B. 2009. Carte géologique de la République du Gabon à 1/200 000, feuille Ndendé. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  10. PRIAN J.P., THIEBLEMONT D., PREAT A., COCHERIE A., GUERROT C., GOUJOU J.C., EKOGHA H., SIMO NDOUNZE S. 2009. Notice explicative de la Carte géologique de la République du Gabon à 1/200 000, feuille Ndendé. Editions DGMG - Ministères des Mines, du Pétrole, des Hydrocarbures. Libreville.
  11. THIEBLEMONT D., CASTAING C., BILLA M., BOUTON P., PREAT A., ET COLLABORATEURS 2009. Notice explicative de la Carte géologique et des Ressources minérales de la République gabonaise à 1/1 000 000. Editions DGMG, Ministère des Mines, du Pétrole, des Hydrocarbures. Libreville, 384 p.
  12. MAMET B & PREAT A 2007 Eifelian-Givetian stromatoporoid-coral reefs, Belgium. Chapter Devonian, p.191-193, in Facies from Paleozoic reefs and bioaccumulations, Vennin E, Aretz M, Boulvain F, Munnecke A eds. Mémoire du Muséum National d'Histoire Naturelle, Paris, 195 : 341p.
  13. PREAT A, KOLO K, MAMET B, GORBUSHINA A & GILLAN D 2003 Fossil and subrecent fungal communities in three calcretes series from the Devonian of the Canada Rocky Mountains, Carboniferous of northern France and Cretaceous of Central Italy,Chapter 19, 307-323. In Krumbein WE, Paterson DW, Zavarzin, GA eds: Fossil and recent Biofilms A natural History of Life on Earth. Kluwer, Dordrecht, 480p
  14. MAMET B & PREAT A 1997 Geology of Belgium. In: Encyclopedia of Earth Science Series, European and Asian Regional Geology. E.M. Moores & R.W. Fairbridge (Eds) Chapman & Hall:78-83
  15. RAVENNE C, GALLI & PREAT A 1994 Reservoir modeling: Poulseur/CBA, the Reference Model. In: K. Helbig (Ed.) "Modeling the Earth for Oil Exploration", Commission of the European Communities, DGXII, Science, Research and Development, Pergamon (795pp.), p. 91-96
  16. PREAT A & MENNIG JJ 1994 Reservoir modeling: Poulseur/CBA, Data Acquisition and Digitization. In: K. Helbig (Ed.) "Modeling the Earth for Oil Exploration", Commission of the European Communities, DGXII, Science, Research and Development, Pergamon, (795pp), p. 56-60
  17. PREAT A & MENNIG JJ 1994 Reservoir modeling: the Poulseur/Bois d'Anthisnes quarries. In: K. Helbig (Ed.) "Modeling the Earth for Oil Exploration", Commission of the European Communities, DGXII, Science, Research and Development, Pergamon (795pp), p. 39-43
Articles in international scientific journals with peer review
  1. MAMET B & PREAT A (2013) Essai de description d'algues nouvelles paléozoïques. Geologica Belgica, 16, 1-2, 35-48.
  2. BOUTON, P. PREAT A, THIEBLEMONT, D. & EBAN OBANG M. 2012. Le Gabon à l'aube de la Vie . Pour la Science, n°413, mars 2012, pp. 50-57.
  3. PREAT A (2012) Rapport de mission de terrain au Congo-Brazzaville du 22/09 au 13/10. Le Néoprotérozoïque (Schisto-Calcaire) du bassin de Comba. Octobre 2012, 8pages+fichier photographique (670ph.). Rapport pour le BRGM (Orléans, Pointe Noire).
  4. DELPOMDOR F & PREAT A (2012) Hydrocarbon reservoir potential of Neoproterozoic carbonates in the Mbuji-Mayi Supergroup (Sankuru-Bushimay area), Democratic Republic of Congo : stratigraphy, sedimentology, geochemistry, petrophysics. Final report presented at Paris, March 2012, 276p.
  5. CASIER J.G., DEVLEESCHOUWER X., MAILLET S, PETITCLERC E, PREAT A. (2012) Ostracods and rock facies of the Givetian/Frasnian boundary interval in the Sourd d'Ave section at Ave-et-Auffe (Dinant Synclinorium, Ardenne, Belgium). Bulletin of Geosciences, 88, 2, 241-264, Czech Geological Survey, Prague
  6. TAIT J, DELPOMDOR F, PREAT A, TACK L, STRAATHOF G & KANDA V 2011. Neoproterozoic Sequences of the West Congo and Lindi/Ubangi Supergroups in the Congo Craton, Central Africa. In: Arnaud, E., Halverson, G. P. & Shields-Zhou, G.A. (eds) The Geological Record of Neoproterozoic glaciations. Geological Society of London, Memoirs, 36, 185-194, DOI : 10.1144/M36.13
  7. PREAT A, DELPOMDOR F, KOLO K, GILLAN D & PRIAN JP 2011. Stromatolites and cyanobacterial mats in peritidal evaporitive environments in the Neoproterozoic of Bas-Congo (Democratic Republic of Congo) and South Gabon. J Seckbach and VC Tewari (Eds) Stromatolites : Interaction of microbes with sediments, Series : Cellular Origin, Life in Extreme Habitats and Astrobiology, Springer Verlag, DOI 10.1007/978-94-007-0397-1_3, pp.43-63.
  8. PREAT A, DE JONG J, DE RIDDER C & GILLAN D 2011 Possible Fe isotope fractionation during microbiological processing in ancient and modern marine environments. J. Seckbach and VC Tewari (Eds) Stromatolites : Interaction of microbes with sediments, Series : Cellular Origin, Life in Extreme Habitats and Astrobiology, , Springer Verlag, DOI 10.1007/978-94-007-0397-1_29, pp.651-673.
  9. AIT ABDLELOUAHAB D, BOUZENOUNE, A & PREAT A., (2011) Les isotopes stables du carbone et de l'oxygène des carbonates (calcaires et sidérites) du gisement de fer de Boukhadra (Algérie nord-orientale). Bulletin du Service Géologique National, Algérie, 22,3, 381-395.
  10. CASIER J.G., DEVLEESCHOUWER X., MAILLET S, PETITCLERC E, PREAT A. (2011) Ostracods, rock facies and magnetic susceptibility of the Givetian/Frasnian transition at Ave-et-Auffe (Dinant Synclinorium, Belgium). Ber. Inst. Erdwiss. K.F.-Uninv. Graz, Band16, IGCP 596, 2p.
  11. DELPOMDOR F, DEVLEESCHOUWER X., BLANPIED C, SCHRÖDER S, FERNANDEZ M, PREAT A (2011) Microfacies and magnetic susceptibility in two Proterozoic carbonate sequences (Kasai Province, Democratic Republic of Congo). (Submitted).
  12. BOUTON P., PREAT A, THIEBLEMONT D, EBANG OBIANG M (2011) Les environnements de la vie au Paléoprotérozoïque (Gabon). Pour la Science, n°413, mars 2012, pp. 50-57.
  13. PREAT A, PRIAN JP, THIEBLEMONT D, OBAME RM, DELPOMDOR F (2011) Stable isotopes of oxygen and carbon in the Neoproterozoic of South Gabon (Schisto-Calcaire Subgroup, Nyanga Basin) : Are cap carbonate and lithoherms recording a particular destabilization event after the Marinoan glaciation ? Journal of African Earth Sciences, 60, 273-287.
  14. PREAT A, BOUTON, P., THIEBLEMONT D, PRIAN JP, SIMO NDOUNZE, DELPOMDOR F (2011) Paleoproterozoic high 13C dolomites from Lastoursville and Franceville basins (SE Gabon) : stratigraphical synsedimentary subsidence implications. Precambrian Research, 189, 212-228.
  15. PREAT A, MAMET B, DI STEFANO P, MARTIRE L, K. KOLO (2011). Microbially-induced Fe and Mn oxides in condensed pelagic sediments (Middle-Upper Jurassic, Western Sicily). Sedimentary Geology, 237, 179-188.
  16. CASIER J-G, G, DEVLEESCHOUWER X, PETITCLERC E. & PREAT A (2011) Ostracods, rock facies and magnetic susceptibility of the Hanonet Formation and Trois-Fontaines transition (Early Givetian) at the Mont d'Haurs (Givet, France). Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, under press.
  17. CASIER J.G., DEVLEESCHOUWER X., MAILLET S, PETITCLERC E, PREAT A. (2011) Ostracods, rock facies and magnetic susceptibility of the Givetian/Frasnian transition at Ave-et-Auffe (Dinant Synclinorium, Belgium). Ber. Inst. Erdwiss. K.F.-Uninv. Graz, Band16, IGCP 596, 2p.
  18. DEVLEESCHOUWER X., CASIER J.G., PETITCLERC E, PREAT A. (2011) Drowning of a carbonate platform at the Givetian/Frasnian boundary (Sourd d'Ave section, Belgium) : a comparison of different proxies (magnetic susceptibility, microfacies and gammay-ray spectrometry). Ber. Inst. Erdwiss. K.F.-Uninv. Graz, Band16, IGCP 596, 3p.
  19. PREAT A, PRIAN JP, THIEBLEMONT D, OBAME RM, DELPOMDOR F (2011) Stable isotopes of oxygen and carbon in the Neoproterozoic of South Gabon (Schisto-Calcaire Subgroup, Nyanga Basin) : Are cap carbonate and lithoherms recording a particular destabilization event after the Marinoan glaciation ? Journal of African Earth Sciences, 60, 273-287.
  20. MAMET B & PREAT A Un atlas d'algues calcaires, Carbonifère, Alaska arctique. Carnets de Géologie-Notebooks on Geology (online), 60p., 13pl., 1 fig.
  21. CASIER JG, EL HASSANI A, PREAT A (2010) Ostracodes du Dévonien moyen et supérieur du Tafilalt (Maroc). Revue de Micropaléontologie, 53, 29-51.
  22. PREAT A, KOLO K, PRIAN JP, DELPOMDOR F (2010) A peritidal evaporite environment in the Neoproterozoic of South Gabon (Schisto-Calcaire Subgroup, Nyanga Basin). Precambrian Research, 177, 253-265.
  23. CASIER JG, PREAT A (2009) Comments on the Devonian/Carboniferous and Frasnian/Famennian boundary stratotype (La Serre and Coumiac, Montagne Noire, France). Palaeontographica Americana, 63, 200-201.
  24. CASIER JG , BERRA I, PREAT A (2009) Devonian ostracodes from Devils Gate (Eureka, Nevada). Palaeontographica Americana, 63, 199-200.
  25. MAMET B & PREAT A (2009) Algues et microfossiles problématiques du Dévonien Moyen du 'Fondry des Chiens' (bord sud du Synclinorium de Dinant, Belgique) : implications paléobathymétriques. Revue Micropaléontologie, 52, 249-263.
  26. BAELE JM, BOULVAIN F, de JONG J, MATTIELLI N, PAPIER S & PREAT A (2008) Iron microbial mats in Modern and Phanerozoic environments. In RB Hoover, GV Levin, AY Rozanov, PCW Davies Eds. , Instruments, Methods, and Missions for Astrobiology XI, Proc. of SPIE vol. 7097, 12pp.
  27. MAMET B & PREAT A Algues et microproblématiques du Givétien. Mémoire 'Patrimoine géologique, Stratotypes français' Muséum National d'Histoire naturelle Paris (soumis).
  28. MAMET B & PREAT A The hunt for Cummingsella (Carboniferous, Chlorophyta). Geologia Croatica, 61/2-3, 123-128.
  29. PREAT A, de JONG J, MAMET B & MATTIELLI N (2008) Stable iron isotopes confirm microbial mediation in red pigmentation of the Rosso Ammonitico (Mid-Late Jurassic, Verona area, Italy). Astrobiology, 8/4, 841-857.
  30. CASIER JG, EL HASSANI A & PREAT A (2008) Contribution à l'étude des Ostracodes du Dévonien Moyen et Supérieur du Tafilalt. Revue Micropaléontologie (sous presse).
  31. PREAT A, EL HASSANI A & MAMET B. (2008) Iron bacteria in Devonian carbonates (Tafilalt, Anti-Atlas, Morocco). Facies, 54/1, 107-120.
  32. CASIER JG & PREAT A (2007) Ostracods and lithofacies of the Middle/Upper Devonian boundary stratotype (Puech de la Suque, Montagne Noire, France). Bull. Soc. Géologique France, 178/4, 293-304.
  33. MAMET B & PREAT A Jurassic microfacies, Ammonitico Rosso Limestone, Subbetic Cordillera, Spain. Revista Espanola de Micropaleontologia, 38/2-3 , 219-228.
  34. YANS Y, CORFIELD R, RACKI G & PREAT A (2007) Evidence for perturbation of the carbon cycle in Middle Frasnian punctata Zone. Geological Magazine, 144/2, 1-8
  35. DELLA PORTA G, MAMET B & PREAT A (2007) Microbial mediation in the formation of red limestones, Upper Carboniferous, Cantabrian Mountains, Spain Wong, Th.E (Ed.): Proceedings of the XVth International Congress on Carboniferous and Permian Stratigraphy. Utrecht, 10-16 August 2003. Royal Netherlands Academy of Arts and Sciences (Amsterdam), 243-250.
  36. KOLO K, KEPPENS E, PREAT A & CLAEYS Ph. (2007) Experimental observations on fungal diagenesis of carbonate substrates. J. of Geophysical Research-Biogeoscience, 112, G01007, doi:10.1029/2006JG000203.
  37. CASIER JG, BERRA I, OLEMPSKA E, SANDBERG C & PREAT A (2006) Ostracods and rock facies of the Early and Middle Frasnian at Devils Gate in Nevada : Relationship to the Alamo Event. Acta Palaeontologica Polonica, 51/4, 813-828.
  38. PREAT A (2006) Le Givétien franco-belge : moteur de la sédimentation. Eustatisme vs subsidence ? Géologie de la France, Ed. BRGM-SGF, 2006, vol 1-2, 45-51.
  39. MAMET B & PREAT A (2006) Iron-bacterial mediation in Phanerozoic red limestones : state of the art. Sedimentary Geology, 185/3-4, 147-157.
  40. PREAT A, MORANO S, LOREAU JP, DURLET C & MAMET B (2006) Petrography and biosedimentology of the Rosso Ammonitico Veronese (Middle-Upper Jurassic, Northeastern Italy. Facies, 52, 265-278. 52 VANMEIRHAEGHE J, YANS J, PREAT A, GRASSINEAU N & VERNIERS J (2005) New evidence for the Hirnantian (Upper Ordovician) in Belgium? An integrated isotopical, biostratigraphical and sedimentological approach. Steemans P., Javaux E. (Editeurs, 2005).- Paléopalynologie et Paléobotanique du Précambrien au Paléozoïque.- Carnets de Géologie -Notebooks on Geology, Brest, Memoir 2005/02 (CG2005-M02), 77, p.25 fig., 3pl. http://paleopolis.rediris.es/cg/fr-index.html#NEW
  41. MAMET B & PREAT A (2005) Why is 'red marble' red ? Revista Espanola de Micropaleontologia, 37/1, 13-21
  42. PREAT A & GILLAN D (2004) Activités microbiennes (ferro-bactéries et fungi) et origine des matrices carbonatées rougeâtres au Paléozoïque. In Préat et al., Ecole d'Eté des Carbonates récifaux et de plate-forme, 28 juin-8 juillet, Grenoble, Assoc. Sédim. France, 24-33
  43. PREAT A (2004) Le Paléozoïque franco-belge : un exemple de la difficulté de l'estimation temporelle des cycles et séries. In Préat et al., Ecole d'Eté Carbonates récifaux et de plate-forme, 28 juin-8 juillet, Grenoble, Assoc. Sédim. France, 1-23
  44. HAN GM, YANS J, GOUDALIER M, F. LACQUEMENT, CORFIELD R., MANSY JL, BOULVAIN F & PREAT A (2003) Recognition and implication of tectonic loading induced reheating in the northern Variscan front (Belgium and northern France) based on an illite Kubler index and oxygen isotope study. International Journal of Earth Sciences, 92/3:348-363
  45. MAMET B & PREAT A (2003) Sur l'origine de la pigmentation de l'Ammonitico Rosso (Jurassique, région de Vérone, Italie du Nord). Revue de Micropaléontologie, 46/1:35-46
  46. KOLO K, MAMET B & PREAT A (2002) Dichotomous filamentous dolomite crystal growth in the Lower Carboniferous from northern France. A possible direct production of fungal activity ? Contributions to Geology of Belgium and Northwest Europe. Proc. of the first Geologica Belgica International Meeting, Degryse P., Sintubin M (Ed.) Aadrk. Medel., 12, 121-123
  47. MAMET B & PREAT A (2002) Sur les difficultés d'inteprétation des hiatus stratigraphiques. Contributions to Geology of Belgium and Northwest Europe. Proc. of the first Geologica Belgica International Meeting, Degryse P., Sintubin M (Ed.) Aadrk. Medeldel., 12, 117-118
  48. HAN GM, YANS J, GOUDALIER M, F. LACQUEMENT, CORFIELD R, MANSY JL, BOULVAIN F & PREAT A (2002) Recognition and implication of tectonic loading re-heating in late Paleozoic succession of the Dinant Synclinorium (Belgium and northern France) from Frasnian illite crystallinities and oxygen isotopes. Contributions to Geology of Belgium and Northwest Europe. Proc. of the first Geologica Belgica International Meeting, Degryse P., Sintubin M (Ed.) Aardk. Medeldel., 12,97-98
  49. CHEN D, TUCKER ME, SHEN Y, YANS J. & PREAT A (2002) Carbon isotope excursions and sea-level change : implications for the Frasnian-Famennian biotic crisis. Journal of the Geological Society, London, 159:623-626
  50. CASIER JG, DEVLEESCHOUWER X, LETHIERS F., PREAT A & RACKI G (2002) Ostracods and fore-reef sedimentology of the Frasnian-Famennian boundary beds in Kielce (Holy Cross Mountains, Poland). Acta Paleontologica Polonica, 47/2: 227-246
  51. DEVLEESCHOUWER X, HERBOSCH A. & PREAT A (2002) Microfacies, sequence stratigraphy and clay mineralogy of a condensed deep-water section around the Frasnian/Famennian boundary (Steinbruch Schmidt, Germany). Palaeoecology, Palaeogeography, Palaeoclimatology 180/1-3:171-193
  52. BOULVAIN F, DE RIDDER Ch, GILLAN D, MAMET B & PREAT A (2001) Iron microbial communities in Belgian Frasnian carbonate mounds. Facies, 44 : 47-60
  53. PREAT A, MAMET B, DE RIDDER C, BOULVAIN F & GILLAN D (2000) Iron bacterial and fungal mats, Bajocian stratotype (Mid-Jurassic, northern Normandy, France). Sedimentary Geology, 137/3-4:107-126
  54. HAN GM, PREAT A, CHAMLEY H, DECONINCK JF & MANSY JL (2000) Palaeozoic clay mineral sedimentation and diagenesis in the Dinant and Avesnes Basins (Belgium, France): relationships with Variscan tectonism. Sedimentary Geology, 136/3:239-276
  55. SEBBAR A, PREAT A & MAMET B (2000). Microfaciès et biozonation de la rampe mixte carbonifère du bassin de Tindouf, Algérie. Bull. Centres Rech. Explor.-Prod. Elf-Aquitaine, 22/2:203-239
  56. GILLAN DC, WARNAU M, De VRIND-De JONG EW, BOULVAIN F, PREAT A & DE RIDDER C. (2000) Iron Oxydation and Deposition in the Biofilm Covering Montacuta ferruginosa (Mollusca, Bivalvia). Geomicrobiology Journal, 17:141-150.
  57. SEBBAR A, PREAT A, MAMET B & NEDJARI A (2000) Microfaciès et modèle sédimentaire du Carbonifère (Serpukhovien-Moscovien inférieur) du bassin de Reggane (Sahara Central, Algérie) Bull. Serv. Géol. Algérie, vol. 11/1: 61-105.
  58. SEBBAR A, PREAT A, MAMET B & NEDJARI A (2000) Microfaciès et modèle sédimentaire du Carbonifère (Serpukhovien-Moscovien inférieur) du bassin de Béchar (Sahara Septentrional, Algérie). Bull. Serv. Géol. Algérie, vol. 10/1: 159-211.
  59. MAMET B, PREAT A & LEHMAMI M (1999) Algues calcaires marines du Dévonien marocain (Meseta). Rev. de Micropaléontologie, 42/4:301-314.
  60. PREAT A, MAMET B, GILLAN D & BERNARD A (1999) Microbial mediation in carbonate diagenesis of red matrices in the Devonian of Montagne Noire (South of France). Sedimentary Geology, 129: 223-242.
  61. PREAT A, MAMET B, GILLAN D & BERNARD A (1998) Rôle des organismes microbiens et des constructions hématitiques dans la formation des matrices rougeâtres de différentes séries paléozoïques d'Europe: l'exemple du Dévonien de la Montagne Noire. Rev. de Micropal., vol.42/2: 161-182.
  62. WEIS D, HERBOSCH A & PREAT A (1998) Geochemistry and Sr-isotopic geochemistry of the F/F boundary Coumiac section (France): inferences for sea-level variations. Mineralogical Magazine, Goldschmidt Conference 1998, vol.62A/3: 1645-1646
  63. PREAT A, MAMET B & DEVLEESCHOUWER X (1998) Sédimentologie du stratotype de la limite Frasnien/Famennien (Coumiac, Montagne Noire, France). Bull. Soc. Géol. France, vol.169/3: 331-342.
  64. CASIER JG, LEHMAMI M & PREAT A (1997) Ostracodes et sédimentologie du Givétien à Ain Khira (Meseta nord-occidentale du Maroc. Revue de Paléobiologie, Genève, 16(1):151-167
  65. MAMET B, PREAT A & DE RIDDER Ch (1997) Bacterial Origin of the Red Pigmentation, Devonian Slivenec Limestone, Czech Republic. Facies, Erlangen, 36:47-51.
  66. CASIER JG & PREAT A (1996) Ostracodes et sédimentologie au passage Eifélien/Givétien dans la Marbrière du Pic de Vissous. Bull. Centres Rech. Explor.-Prod. Elf-Aquitaine, 20/2:367-387.
  67. KASIMI R & PREAT A (1996) Sédimentation de rampe mixte silico-carbonatée des couches de transition eiféliennes-givétiennes franco-belges. Deuxième partie: Cyclostratigraphie et paléostructuration. Bull. Centres Rech. Explor.-Prod. Elf-Aquitaine, 20(1): 61-90.
  68. PREAT A & KASIMI R (1995) Sédimentation de rampe mixte silico-carbonatée des couches de transition eiféliennes-givétiennes franco-belges. Première partie: microfaciès et modèle sédimentaire. Bull. Centres Rech. Explor.-Prod. Elf-Aquitaine, 19(2):329-375.
  69. BERTRAND M, PREAT A & RACKI G (1995) Preliminary sedimentological study of an early Frasnian buildup in the Holy Cross Mts., Central Poland. Publ. Serv. Géol. Lux., vol. XXIX. Proc., 2nd Eur. Regional Meeting, ISRS, 29:49-50
  70. CASIER JG, KASIMI R & PREAT A (1995) Les Ostracodes au passage Eifélien/Givétien à Glageon (Avesnois, France). Géobios, 28/4:487-499.
  71. WEIS D & PREAT A (1994) Variations du niveau marin dans le Dévonien carbonaté de Belgique: approches géochimique et isotopique (Sr, C et O) (deuxième partie). Bull. Soc. Géol. France, t.165, n°5 : 485-497.
  72. PREAT A & WEIS D (1994) Variations du niveau marin dans le Dévonien carbonaté de Belgique: approches sédimentologique et séquentielle (première partie). Bull. Soc. géol. France, t.165, n°5 : 469-483.
  73. MAMET B & PREAT A (1994) Algues calcaires de l'Eifélien Inférieur (Calcaire de Couvin, Synclinorium de Dinant). Revue de Micropaléontologie, 37/2: 135-159.
  74. MAMET B, PREAT A & ROUX A (1994) Sur la présence de Gymnocodium (Algue) dans le Dévonien Moyen (Synclinorium de Dinant, Belgique). Géobios, 175-180.
  75. VENNIN E, SORIA AR, PREAT A & MELENDEZ A (1993) Analisis secuencial durante el intervalo Barremiense-Aptiense en la Cubeta de Oliete. Cuardernos de Geologia Iberica, 17, 257-283.
  76. PREAT A & RACKI G (1993) Small-scale cyclicity sedimentation in the Early Givetian of the Gory Swietokrzyskie Mountains : Comparison with the Ardenne sequence. Annales Societatis Geologorum Poloniae, 63:13-31.
  77. TOURNEUR F, VANGUESTAINE M, BUTLER C, MAMET B, MOURAVIEFF POTY E & PREAT A (1993) A preliminary study of the Ashgill carbonate beds from the lower part of the Fosses Formation (Condroz, Belgium). Geol. Mag., 130(5):673-679. Cambridge University Press.
  78. BERTRAND M, COEN-AUBERT M, DUMOULIN V, PREAT A & TOURNEUR F (1993) Sédimentologie et paléoécologie de l'Emsien supérieur et de l'Eifélien inférieur des régions de Couvin et de Villers-la-Tour (Bord Sud du Synclinorium de Dinant, Belgique). Neues Jahrbuch für Geologie und Paläontologie, Abh., 188/2:177-211.
  79. MAMET B & PREAT A (1992) Algues du Dévonien Moyen de Wellin (Synclinorium de Dinant, Belgique). Revue de Micropaléontologie, vol.35(1):53-75.
  80. DE PUTTER Th & PREAT A (1989) Sédimento-diagenèse de séquences émersives de type "shallowing-upward" dans la "Grande Brèche" calcaire du Viséen supérieur de Belgique. Compte-Rendus Acad. Sci. Paris, t.309, Série II:1827-1831.
  81. PREAT A & MAMET B (1989) Sédimentation de la plate-forme carbonatée givétienne franco-belge. Bull. Centres Rech. Explor.-Prod. Elf-Aquitaine, 13(1):47-86.
  82. CLAEYS Ph, HERBOSCH A & PREAT A (1988) Collapse breccia: a possible explanation for the "Grande Brèche Viséenne" of the Dinant and Namur Basins (Belgium). Exc. B-4 I.A.S. 9th European Regional Meeting. Exc. Guidebook, Leuven-Belgium, pp.273-286.
  83. PREAT A & BOULVAIN F. (1988) Middle and upper Devonian carbonate platform evolution in Dinant and Namur basins (Belgium, France). Exc. A-1, I.A.S. 9th European Regional Meeting. Exc. Guidebook, Leuven-Belgium, pp.1-25.
  84. PREAT A, CEULENEER G & BOULVAIN F (1987) Etude sédimentologique des calcaires du Givétien Inférieur d'Olloy-sur-Viroin (bord sud du Bassin de Dinant, Belgique). Ann. Soc. Géol. Nord,, CVI:251-265.
  85. PREAT A & JM ROUCHY (1986) Faciès pré-évaporitiques dans le Givétien des bassins de Dinant et de Namur (Belgique, France). n° spécial du Bull. Soc. belge Géol., 95(2-2):177-189. Colloque internatio¬nal sur "Les évaporites pré-permiennes en Europe: Aspects sédimentologiques, paléogéographiques et structuraux"
  86. MAMET B, CLAEYS Ph, HERBOSCH A, PREAT A & WOLFOWICZ Ph (1986) La "Grande Brèche" viséenne (V3a) des bassins de Namur et de Dinant (Belgique) est probablement une brèche d'effondrement. n° spécial du Bull. Soc. belge Géol., 95(2-3):151-166. Colloque international sur "Les évaporites pré-permiennes en Europe: Aspects sédimentologiques, paléogéographiques et structuraux"
  87. PREAT A & BOULVAIN F (1986) Les calcaires laminaires du Givétien Inférieur du Bassin de Dinant: témoins paléogéographiques et paléoclimatiques. Ann. Soc. Géol. Nord, CVI:49-64.
  88. MAMET B & PREAT A (1985) Sur la présence de Palaeomicrocodium (Algue?, Incertae sedis) dans le Givétien Inférieur de Belgique. Géobios, 18(3):389-392.
  89. MAMET B & PREAT A (1985) Sur quelques Algues Vertes nouvelles du Givétien de la Belgique. Revue de Micropaléontologie, 28(4):67-74.l
  90. HERBOSCH A, CAUET S & PREAT A (1984) Réponse aux Commentaires Formulés par L. Dejonghe. Mineralium Deposita, 19:317
  91. PREAT A, CAUET S & HERBOSCH A. (1983) Caractère Epigénétique Etranger des Gîtes Filoniens Pb-Zn (Ba-F) du District du Bord Sud du Synclinorium de Dinant (Belgique). Mineralium Deposita, 18:349-363.