Bodo Weber

Areas of Work Geochronology and isotope geochemistry, Rb-Sr, Sm-Nd and U-Pb methods Geochemistry, petrology and mineralogy of metamorphic and igneous rocks Structural geology and tectonics Fear of Work Crustal evolution and origin with the focus on metamorphic segments of the lower crust. – Uplift and cooling histories – Dating of zircons, garnets, micas and whole rock (Southeastern Mexico, state of Oaxaca and Chiapas). –Deformation analysis – Terrane kinematics (Southern Mexico, state of Puebla). – Timing of hydrothermal and alteration events, dating of clays (Kaolin of Meissen, Germany). – Isotope Geochemistry and source studies of ore deposits (El Arco, Baja California).
	Dr. rer. nat. Bodo Weber Dr. rer. nat. (Ph.D.) in geology, geochronology and isotope geochemistry, Ludwig-Maximilians-Universität München, Germany, Feb. 1998.  M.C. in geology (Diplom Geologe), Eberhard-Karls-Universität Tübingen, Germany, Nov. 1993. 1994 – 1995. Scholarship from the  German Academic Exchange Service (DAAD) for a research work  in the institutes of geology and geophysics at UNAM, Mexico City. 1995 – 1998 Scientific assistant and Ph.D. candidate at the Institute of Mineralogy, Petrology and Geochemistry, Ludmig-Maximilians-Universität München, Germany. 1997 – 2000. Scientific assistant (Wissenschaftlicher Assistent) in the department of mineralogy and applied geochemistry at the Technische Universität München, Germany.  Since Oct. 2000 scientist at the geology department, CICESE, by means of the Academic's Exchange Agreement among SEP-CONACYT and the DAAD.  For more information about DAAD-scholarships please do not fear to contact me or look at the site http://comenius.cele.unam.mx/daad/ Email: bweber@cicese.mx Methodology Preparation and separation of samples and minerals. Separation of elements in clean laboratories. Thermal ionization mass spectrometers (Finnigan MAT262, Finnigan MAT261 and Finnigan quatrupol THQ). Projects  Formation and Evolution of the Chiapas Massif, SE Mexico: U/Pb and 40Ar/39Ar geochronology on basement rocks. 40Ar/39Ar geochronology, geochemistry, and TEM-sounding of the El Arco porphyry copper deposit, Baja California. Radiogenic isotope studies on the igneous, metamorphic, and metallurgical evolution of central Baja California and southeastern Mexico.   Courses Thought Isotope Geochemistry (CICESE 1998) Petrology and petrography of metamorphic rocks (TUM 1998, 1999, 2000; CICESE 2001) Petrology and petrography of igneous rocks (TUM 1998, 1999) Microscopy in thin sections (TUM 1998, 1999, 2000)

Publications

Weber, B. and Hecht, L. (2003): Petrology and geochemistry of metaigneous rocks from a Grenvillian basement fragment in the Maya block: The Guichicovi complex, Oaxaca, Southern Mexico. – Precambrian Research, 124, 1, p. 41-67.

GILG, H., WEBER, B., KASBOHM, J., and FREI, R. (2003). Isotope geochemistry and origin of illite-smectite and kaolinite from the Seilitz and Kemmlitz kaolin deposits, Saxony, Germany. – Clay Minerals, 38, p 95-112.

WEBER, B. and HECHT, L. (2003): Petrology and geochemistry of metaigneous rocks from a Grenvillian basement fragment in the Maya block: The Guichicovi complex, Oaxaca, Southern Mexico. – Precambrian Research, in press.

GILG, H., WEBER, B., KASBOHM, J., and FREI, R. (2003). Isotope geochemistry and origin of illite-smectite and kaolinite from the Seilitz and Kemmlitz kaolin deposits, Saxony, Germany. – Clay Minerals, 38, p 95-112.

WEBER, B.,  GRUNER, B., HECHT, L.,  MOLINA-GARZA, R. y KÖHLER, H. (2002). El descubrimiento de basamento metasedimentario en el macizo de Chiapas: la “Unidad La Sepultura”. – GEOS, 22,1, p. 2-11. 

SCHAAF, P., WEBER, B., WEIS, P., GROSS, A., KÖHLER, H., and ORTEGA-GUTIÉRREZ, F (2002). The Chiapas Massif (Mexico) revised: New geologic and isotopic data for basement characteristics. – In: Miller, H. Contributions to Latin-American Geology. Neues Jahrbuch Geologie Paläontologie, 225, p. 1-23.

WEBER, B. and HECHT, L. (2000): Mineralogy, chemistry, and Sm-Nd isotopes of Proterozoic Fe-oxide ores from the Guichicovi complex of south-eastern México. – Münchner Geol. Hefte, A28, p. 61-69. – abstract

WEBER, B. and KÖHLER, H. (1999): Sm-Nd, Rb-Sr and U-Pb isotope geochronology of a Grenville terrane in Southern Mexico: Origin and geologic history of the Guichicovi complex. – Precambrian Research, 96, p. 245-262. – abstract – articulo completo

WEBER B. (1998): Die magmatische und metamorphe Entwicklung eines kontinentalen Krustensegments: Isotopengeochemische und geochronologische Untersuchungen am Mixtequita-Komplex, Südostmexiko. – Münchner Geol. Hefte, A24, 176 pp.

WEBER, B., MESCHEDE, M., RATSCHBACHER, L., FRISCH, W. (1997): Defomation analysis and kinematic history of the Acatlán Compex in the Nuevos Horizontes - San Bernardo region, State of Puebla. – Geofísica Internacional, 36, 2, p. 63-76. – resumen – articulo completo

WEBER, B., MESCHEDE, M., RATSCHBACHER, L., FRISCH, W. (1993): Deformationsanalyse im Basementkomplex von Acatlán, Südmexiko: Kinematische Geschichte des Mixteca-Terranes. – Zeitschrift der deutschen geologischen Gesellschaft, 144, p18-29.

in process

Weber, B., Cameron, K.L., Osorio, M., and Schaaf, P. (in review): A late Permian tectonothermal event affected former Grenville crust in the southern Maya terrane: U-Pb zircon ages from the Chiapas massif, SE Mexico. – submitted to IGCP 453 Special Paper “Ancient Orogens and Recent Analogues”, Internacional Geology Reviews. 

Abstracts  

Weber, B.,  López-Martínez, L., Cameron, K.L., Hecht, L., Hiller, R., Gruner, B. y Köhler, H. (2003): La Historia Metamórfica del Macizo de Chiapas: Nuevos datos geocronológicos y petrológicos de “La Sepultura”. – XIII Congreso Nacional de Geoquímica, Actas INAGEQ.

 Weber, B. and Cameron, K.L. (2003): U-Pb zircon dating of metamorphic rocks from the Chiapas Massif: evidence for Grenville crust and a late Permian orogeny in the southern Maya terrane. - GSA Cordilleran Meeting Pto. Vallarta, GSA Abstracts with Programs, 35, 4, Paper 27-2.

 Martín-Barajas, A. and Weber, B., (2003): Petrology of Plio-Pleistocene volcanic rocks in the northern gulf of California rift system: insights into crustal composition. - GSA Cordilleran Meeting Pto. Vallarta, GSA Abstracts with Programs, 35, 4, Paper 17-7.

WEBER, B., LÓPEZ MARTÍNEZ, M., MARTÍNEZ MULLER, R. (2002): Chemical and isotopic evidence for an oceanic island arc origin of the El Arco porphyry copper deposit, Baja California. – A suspect link to a suspect terrane? – III. Reunión Nacional de Ciencias de la Tierra, Pto. Vallarta, Actas INAGEQ, 8, 1, p. 242-243. 

LOPEZ MARTINEZ, M., SMITH, P.E., WEBER, B., YORK, D., MARTÍNEZ MULLER, R. (2002): Direct dating of El Arco pyrites by 40Ar/39Ar. – III. Reunión Nacional de Ciencias de la Tierra, Pto. Vallarta, GEOS, 22, 2, p. 242. 

MARTÍN-BARAJAS, A., WEBER, B., ARAGÓN-ARREOLA, A. (2002): Petrología volcánica y evidencias isotópicas en rocas Pliocuaternarias del norte del Golfo de California. – III. Reunión Nacional de Ciencias de la Tierra, Pto. Vallarta, GEOS, 22, 2, p. 239.

WEBER, B. and LÓPEZ-MARTÍNEZ, M. (2002): Sr, Nd, and Pb isotopes and Ar-Ar dating of the “El Arco” porphyry copper deposit, Baja California: evidence for Cu mineralization within an oceanic island arc. – GSA Annual Meeting Denver Co., GSA Abstracts with Programs, 34, 6, Paper No. 36-4.

WEBER, B., LÓPEZ-MARTÍNEZ, M., FORSYTHE, L. (2002): Island arc origin of the “El Arco” porphyry copper deposit, Baja California: evidence from ⁴⁰Ar-³⁹Ar dating and radiogenic isotopes. – 12th Annual VM Goldschmidt Conference, Davos, Swizerland. Geochimica et Cosmochimica Acta, 66, S1, p. A826. 

WEBER, B., FORSYTHE L., ROMERO-ESPEJEL, H., LÓPEZ-MARTÍNEZ, M. (2001): Resultados geoquímicos e isotópicos preliminares sobre las características y la formación del Pórfido Cuprífero de El Arco, Baja California. Geos, 21, 3, p. 235-236.

WEBER, B. and HECHT., L. (2001): Petrology and geochemistry of metaigneous suites from the Grenvillian Guichicovi complex, Southern Mexico. - XI Congreso Nacional de Geoquimica , Ensenada, B.C., Actas INAGEQ, p. 59.

WEBER, B., LOPEZ, R., KÖHLER, H. (2001): Isotopic and chemical indications on the origin of the Mixtequita and the Chiapas Batholiths in SE Mexico: Evidences for inherited Grenville and Panafrican basement. – EUGXI Strasbourg, France.

WEBER, B. and KÖHLER, H. (2000): Indicaciones isotópicas y geoquímicas sobre la edad y el origen del batolito de la Mixtequita en el este del estado de Oaxaca y sobre su posible correlación con el macizo de Chiapas. – 2ª Reunión de las ciencias de la tierra, Pto. Vallarta, resúmenes, p. 322. 

WEBER, B. and HECHT, L. (2000): Fe-rich rocks in the Guichicovi complex, SE-Mexico: mineralogical and chemical indications on their origin. – 17. Geowissenschaftliches Lateinamerikakolloquium Stuttgart, Profil No 18, Inst. für Geologie und Paläontologie, Univ. Stuttgart: Tagungsprogramm und Extended Abstracts, p. 59.

Weis, P., GroSS, A., Schaaf, P., Weber, B., Köhler, H. (2000): Detailkartierungen und Isotopenuntersuchungen im Chiapas-Massiv, SE-Mexico: Oaxaquia, Grenville oder gar Panafrikanisches Pasement? – 17. Geowissenschaftliches Lateinamerikakolloquium Stuttgart, Profil No 18, Inst. für Geologie und Paläontologie, Univ. Stuttgart: Tagungsprogramm und Extended Abstracts, p. 59.

WEBER, B. and HECHT, L. (2000): Magnetite ores and Fe-Ti-P-rich rocks as indicators of an anorthosite suite in the Guichicovi complex, SE-Mexico. – DMG 2000, Heidelberg, European Journal of Mineralogy, Beihefte, 12, 1, p. 230.

WEBER, B. and KÖHLER, H. (1998): Evidence for a 1.4 to 1.2 Ga crust forming event in the Grenville-aged Guichicovi complex of Southern Mexico. – Precambrian-Paleozoic interactions between Laurentia and Gondwana, IGCP Project #376, Oaxaca, abstracts, p. 36.

WEBER, B., MORAN-ZENTENO, D.J., SÖLLNER, F. , KÖHLER, H. (1997): Magmatic and metamorphic evolution of the Grenville-aged Guichicovi Complex in Southern Mexico. – Seventh annual V.M. Goldschmidt Conference, Tucson, Arizona, abstracts, p. 214-215.

WEBER, B. and KÖHLER, H. (1997): La evolución magmática y metamórfica del complejo Guichicovi de edad grenvilleana, Estado de Oaxaca. – II Convención sobre la evolución geológica de México y recursos asociados, Pachuca, Hgo., México, Libro de resúmenes, p. 88-89. 

WEBER, B. and KÖHLER, H. (1997): Isotopic studies in the Mixtequita Complex of southern Mexico: The southeastern extension of the Proterozoic Oaxaquia continent. – European Union of Geosciences EUG 9, Strasbourg, abstracts, p. 169.

WEBER, B., KÖHLER, H., MORAN-ZENTENO, D.J. (1996): Sm-Nd und Rb-Sr Isotopenuntersuchungen im Mixtequita-Komplex, Oaxaca, Südmexiko: Die südöstliche Fortsetzung präkambrischer Kruste in Mexiko. – 15. Geowissenschaftliches Lateinamerikakolloqium, Hamburg, Terra Nostra, 8, p. 149-150.

WEBER, B., MESCHEDE, M., RATSCHBACHER, L., FRISCH, W. (1992): Deformationsanalyse im Basementkomplex von Acatlán, Südmexiko: Kinematische Geschichte des Mixteca-Terranes. – 13. Geowissenschaftliches Lateinamerikakolloquium, Münster, abstracts.

WEBER, B., MESCHEDE, M., RATSCHBACHER, L., FRISCH, W., RILLER, U., HERRMANN, U. (1992): La Orogénesis Acadiana en el Sur de México: Etapas de Deformación en el Complejo Acatlán. – XI. Convención Geológica Nacional, Veracruz, México, Libro de Resumenes, p. 216.

WEBER, B., MESCHEDE, M., RATSCHBACHER, L., FRISCH, W., RILLER, U., HERRMANN, U. (1992): Acadische Orogenese in Südmexiko: Deformationsanalyse im Basementkomplex von Acatlán, Puebla, Südmexiko – TSK IV, Darmstadt, Frankfurter Geowissenschaftliche Arbeiten, 11, p. 174-177.     

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