CURRICULUM VITAE

Victor Alejandro Valencia

**** * ***** ****** **

***** ****** **

520-***-****

E-mail: abm1s3@r.postjobfree.com

Updated:1/2010

Nationality: Mexican (USA Permanent Resident)

Marital Status: Married

Education

1992- B.Sc. in Geosciences, School of Geosciences, Sonora State Center of

Superior Studies (CESUES), Mexico.

1995- M.Sc. Major in Economic Geology, Master Degree Program, Department of

Geology, University of Sonora, Mexico.

Masters Thesis: Stratigraphy and Microfacies of Lower Cretaceous,

Lampazos, Sonora.

2005- Ph.D. in Geosciences, Department of Geosciences, University of

Arizona, USA.

Ph.D. Dissertation: Evolution of La Caridad porphyry copper deposit,

Sonora, and geochronology of porphyry copper deposits in northwest

Mexico.

Professional Experience

1995- Consultant, project "Marisol" owned by Cesar Albelais, Santa

Ana, Sonora

1995/1996- Exploration Geologist for Red Rock Mining Company, Cucurpe,

Sonora

1996/1997- Project Geologist for Manhattan Mining Company, Moris,

Chihuahua

1997- Exploration Geologist for Echo Bay Exploration Mexico

1997/1998- Exploration Geologist Minefinders, Dolores Project, Chihuahua,

Mexico.

1998/2000- Associate Professor of the Regional School of Earth Sciences,

University of Guerrero, Mexico.

2003/2005- Research Assistant, University of Arizona.

2005/2007- Research Associate, Arizona LaserChron Center (U-Pb

geochronology) University of Arizona.

2007/2009- Research Scientist and Manager of the Arizona LaserChron Center.

NSF Laboratory Facility. University of Arizona

2007/ to date- Economic geology consultant for LUISMIN and GOLDCORP.

(Mexico)

2005/to date- Contracted geochronology research (i.e. Anglogold,

Antofagasta Minerals, Codelco, Newmont, Rio Tinto, Barrick, Phelps Dodge,

Penoles, Grupo Mexico)

Honors and Achievements

. Outstanding Student Award School of Geosciences (CESUES)

. Graduated with honorable mention, B.S. Degree (CESUES)

. Graduated with honorable mention, M.S. Degree (UNISON)

. CONACYT Master's degree scholarship, 1993-1995

. Special Award for Academic work. The University of Guerrero, 1998

. CONACYT PhD degree scholarship, 2000-2004

. University of Arizona, Department of Geosciences Scholarship, 2001

. Arizona Geological Society Courthright Scholarship award, 2002

. Society of Economic Geologists Foundation Terrones Student Research

Grant, 2004

. University of Arizona, Department of Geosciences for The College of

Sciences Galileo Scholarship 2005

. Invited Lecturer for the 2007 Metallogeny Latin American course of

UNESCO-SEG-SGA. Mexico D.F.

. Member level I of the National Research Council 2010-2012 (SNI Conacyt

Mexico)

Funded Grants

. SIBEJ-CONACYT Grant 1998 for the research proposal: Characterization

of granitic intrusions related to gold ore deposits on the western

limit of the Guerrero-Morelos platform, (PI)

. Society of Economic Geologists Foundation Terrones Student Research

Grant, 2004.

. CONACYT Grant 2006 for the research proposal: Characterizing and

dating the Cretaceous and Tertiary magmatic, tectonic, and

mineralizing events of Sonora, Northwest Mexico (Analysis of a

representative quadrangle in Central Sonora) (Participant).

. CONACYT Grant 2006 for the research proposal: Origen y Evolucion

tectonotermica del Complejo Xolapa (Participant).

. Banco de la Republica de Colombia Grant 2007 for the research

proposal: Caracterizacion petrotectonica del plutonismo del Cenozoico

Inferior de la Sierra Nevada de Santa Marta, Colombia: Implicaciones

en la dinamica orogenica del NW de Suramerica y el Caribe

(Participant).

. CONACYT Grant 2007 for the research proposal: Petrolog a, Deformaci n,

Termobarometr a, Geoqu mica Y Geocronolog a De Las Rocas Metam rficas

Del Norte De Sinaloa Y Sur De Sonora (Participant).

. CONACYT Grant 2007 for the research proposal: El Metodo Isotopico

Lutecio-Hafnio Como Trazador Isot pico Y Geocronometro: Una Nueva

T cnica En El Estudio Del Origen Y La Evoluci n De La Corteza En Los

Terrenos Del Sur De M xico. (Participant).

. Origen de las contribuciones metam rficas en la secuencia Paleogena de

la Cordillera Central 2008-2009: aproximaci n con qu mica mineral de

fases detr ticas y geocronologia Ar-Ar en micas blancas. ICP-ECOPETROL

(Co-PI)

. Banco de la Republica de Colombia Grant 2008. Petrog nesis e historia

termal de baja temperatura del Batolito de Acand , Golfo de Urab :

implicaciones en la formaci n de corteza gran tica en arcos de islas y

la colisi n Mio-Pliocena del istmo de Panam . Banco de la Republica,

Colombia (Co-PI)

Thesis Advised (B.Sc)

1. Caracterizacion de los Jaspes del Cerro Dos Hermanas, SLP: Un ejemplo

de Jasperoides del altiplano Mexicano. Sergio Nava. April 1999.

University of Guerrero. Now working at IMMSA (Taxco Unit)

2. Caracterizacion petrotectonica de los intrusivos del yacimiento Nukay,

Ciro Diaz, April 2000, University of Guerrero. Now working at Mexican

Geological Survey

3. Caracterizacion del yacimiento ferrifero la Sorpresa, Buenavista de

Cuellar, Gro. Angel Avilez April 2000, University of Guerrero. Now

working at PEMEX

4. Petrologia de los intrusivos laramidicos del limite oeste del Terreno

Mixteco, Gustavo Mellin, April 2000, University of Guerrero. Now

working at PEMEX

Member of Research Committee (M.Sc nd Ph.D)

1. Efren Perez Segura Instituto de Geociencias UNAM (Ph.D) 2006

2. Omar Noriega Martinez Universidad de Sonora (M.Sc) 2006

3. Mauricio Ibanez, M.Sc. University of Arizona

4. Hildebrando Leal Ph.D. University of Barcelona

5. Aurora Zavala PhD. Universidad Autonoma de Nuevo Leon

6. Ernesto Ramos Ph.D. Universidad Nacional Autonoma de Mexico

Publications

1. Valencia, V.A. (1995) Estratigrafia y Microfacies del Cretacico

inferior de Lampazos, Sonora: Boletin del Departmento de Geologia

UNISON, Vol. 11, No 2, pp.56-86.

2003

2. Meza-Figueroa, D., Valencia-Moreno, M., Valencia, V. A., Ochoa-

Landin, L., P rez-Segura, E., and Diaz-Salgado, C., (2003). Major

and Trace element geochemistry and 40Ar/39Ar geochronology and

geochemistry of Laramide plutonic rocks associated with gold-bearing

Fe skarn deposits in Guerrero state Mexico. Journal of South

American Earth Sciences, V.16-4. 205-217p.

2004

3. Ducea, M., Gehrels, G., Shoemaker, S., Ruiz, J., and Valencia V. A.,

(2004) Geologic Evolution Of The Xolapa Complex, Southern Mexico;

Evidence From U-Pb Zircon Geochronology. Geological Society of

America Bulletin V.116 (7-8), 1016-1025 p.

4. Ducea M., Valencia V.A., Shoemaker S., Reiners R., Campa, M., Moran-

Zenteno D., Nicolescu E., and Ruiz J. (2004), Rates Of Sediment

Recycling Beneath The Acapulco Trench: Constraints From (U-Th)/He

Thermochronology. Journal of Geophysical Research, V.109 B09404,

doi:10.1029/2004JB003112.

5. Perez-Segura, E., Gallardo-Romero, R., Valencia-Gomez, V. A.,

Padberg, M. (2004) La Esperanza: una nueva mineralizacion con Ni-Co

en Sonora, Mexico. Revista Mexicana de Ciencias Geologicas, v.21,

260-267 p.

2005

6. Valencia V.A., Ruiz J., Barra F., Geherls G., Ducea M., Titley S.R.,

Ochoa-Landin L. (2005) U-Pb single zircon and Re-Os geochronology

from La Caridad Porphyry Copper Deposit: Insights for the duration

of magmatism and mineralization in the Nacozari District, Sonora,

Mexico. Mineralium Deposita. 40:175-191. DOI 10.1007/s00126-005-0480-

1

7. Ducea, M., Saleeby, J., Morrison, J., and Valencia, V. A., (2005)

Subducted carbonates and their role in the metasomatism of mantle

wedges: An example from California. American Mineralogist, v.90, 864-

870.

8. Barra, F., Ruiz, J., Valencia, V. A., Ochoa-Landin, L., Chesley, J.

(2005) Laramide porphyry Cu-Mo mineralization in Northern Mexico:

age constraints from Re-Os geochronology in molybdenites. Economic

Geology, Vol. 100, No. 8.

9. Wetmore P. H., Alsleben H., Paterson S. R, Ducea M., Gehrels G., and

Valencia V. A. (2005) Field Trip to the northern Alisitos Arc

Segment: Ancestral Agua Blanca Fault Region. Ledezma-Vazquez, J.

(Ed.) VII International Meeting on the Geology of the Baja

California Peninsula, Peninsular Geological Society. April 3rd to

6th of 2005, Ensenada, Baja California, M xico. 40 p.

2006

10. Valencia, V. A., Noguez-Alc ntara,Benito, Barra, F, Ruiz, J.,

Gehrels, G., Quintanar, F., and Valencia-Moreno M. (2006) Re-Os

Molybdenite and LA-ICPMS U-Pb zircon Geochronology from the

Milpillas Porphyry Copper Deposit: insights for mineralization in

the Cananea District, Sonora, Mexico. Revista Mexicana de Ciencias

Geologicas.v. 23 (1), 39-53.

11. Valencia V. A., Barra F., Weber B., Ruiz J., Geherls G., Chesley J.,

Lopez-Martinez M. (2006). Re-Os and U-Pb Geochronology of the El

Arco Porphyry Copper Deposit, Baja California Mexico. Journal of

South American Earth Sciences,v. 22 (1-2), 39-51

12. Ducea, M.N., Gehrels, G.E., Shoemaker, S., Ruiz, J., and Valencia

V.A. (2006) Reply to Comments on a discussion of Geologic evolution

of the Xolapa Complex, southern Mexico; Geological Society of

America Bulletin, 118 (5-6), 2006, 766-767.

13. Talavera-Mendoza O. Ruiz J., Gehrels G., Meza-Figueroa D., Vega-

Granillo R., Valencia V. A. (2006) Reply to comment on "U-Pb

geochronology of the Acatl n Complex and implications for the

Paleozoic paleogeography and tectonic evolution of southern Mexico"

by Talavera et al. Earth and Planetary Sciences Letters, 245 (1-2),

476-480.

14. Weber, B., Schaaf, P., Valencia, V.A., Iriondo A., Ortega-Gutierrez,

F., Provenance ages of Late Paleozoic sandstones (Santa Rosa

Formation) from the Maya block, SE Mexico - implications on the

tectonic evolution of western Pangea. (2006) Revista Mexicana de

Ciencias Geologicas. 23 (2), 262-276

15. Gehrels G., Valencia V. and Pullen A.(2006) Detrital zircon

geochronology by Laser-Ablation Multicollector ICPMS at the Arizona

LaserChron Center. In Olszewski, T.D. (Ed), Geochronology Emerging

opportunities, Paleontological Society V.12, p.67-76.

16. Cardona, A., Cordiani, U.G., Ruiz, J., Valencia, V., Nutran, A. P.,

Sanchez., A. W. (2006) Detrital zircon U/Pb LA-ICP-MS geochronology

and Nd whole rock isotopes from Paleozoic meta-sedimentary rocks of

the Mara on Complex (6 -10 ): insights on the proto-andean tectonic

evolution of the eastern peruvian andes. SSAGI Conference.

2007

17. Talavera-Mendoza O, Ruiz J, Gehrels GE, Valencia VA, Centeno-Garc a

E (2007) Detrital zircon U/Pb geochronology of southern Guerrero and

western Mixteca arc successions (southern Mexico): New insights for

the tectonic evolution of southwestern North America during the late

Mesozoic. Geological Society of America Bulletin: Vol. 119, No. 9

pp. 1052-1065.

2008

18. Gonz lez-Le n, C.M., Scott, R.W., Loeser, H., Lawton, T.F. Robert,

E., Valencia, V.A., (2008), Upper Aptian-Lower Albian Mural

Formation: stratigraphy, biostratigraphy and depositional cycles on

the Sonoran shelf, northern M xico: Cretaceous Research, v. 28, no.

4, p. 1-17.

19. Gehrels, G. E., Valencia, V. A. and Ruiz J. (2008), Enhanced

precision, accuracy, efficiency, and spatial resolution of U-Pb ages

by laser ablation-multicollector-inductively coupled plasma-mass

spectrometry, Geochem. Geophys. Geosyst., 9, Q03017,

doi:10.1029/2007GC001805.

20. Pinto-Linares P. J., Levresse G., Tritlla, J., Valencia, V. A.,

Torres-Aguilera, J. M., Gonz lez, M., Estrada D. (2008) Magmas

transicionales del tipo adak tico a calcialcalino en un ambiente

continental extensivo en los dep sitos de Au-Cu de tipo skarn de La

Paz, Mesa Central, M xico: implicaciones metalogen ticas, 2008

Revista Mexicana de Ciencias Geologicas v. 25, n m. 1,, p. 39-58

21. Ramos-Vel zquez, E., Calmus, T., Valencia, V. A., Iriondo, A.,

Valencia-Moreno, M., Bellon, H.(2008) U-Pb and 40Ar/39Ar

geochronology of the Coastal Sonora batholith: New insights on

Laramide continental magmatic arc. Revista Mexicana de Ciencias

Geologicas v. 25, n m. 2, p. 314-333

22. Paulsen, T., Encarnaci n, J., Anne Grunow, A., Valencia, V.A. and

Rasoazanamparany, C. (2008). Late sinistral shearing along

Gondwana's paleo-Pacific margin in the Ross orogen, Antarctica: New

structure and age data from the O'Brien Peak area. Journal of

Geology. v. 116, p. 303-312

23. Valencia V. A, Eastoe C., Ruiz J., Ochoa-Landin L., Gehrels G.,

Barra F. and Gonzalez-Leon C. (2008) Evolution and transition of an

ore-bearing hydrothermal fluid from a porphyry copper to high-

sulfidation epithermal deposit at La Caridad, Sonora, Mexico. V.103.

No.3 Economic Geology.

24. Garrido, M., Barra, F., Dominguez, E., Ruiz, J., Valencia, V. A.

(2008) Late Carboniferous porphyry copper mineralization at La

Voluntad, Nauquen Argentina: Constraints from Re-Os molybdenite

dating. Mineralium Deposita. Volume 43, Num. 5, 591-597.

25. Gaucher, C., Finney, S C., Poir , D G., Valencia, V. A. Grove, M.,

Blanco, G., Pamoukaghli n K., G mez Peral L.,2008. Detrital zircon

ages of Neoproterozoic sedimentary successions in Uruguay and

Argentina: Insights into the geological evolution of the R o de la

Plata Craton. Precambrian Research

Volume 167, Issues 1-2, Pages 150-170

26. Weber, B., Valencia, V.A., Schaaf, P. Pompa-Mera, V. Significance of

provenance ages from the Chiapas Massif Complex (SE Mexico):

Redifining the Paleozoic basement of the Maya block and its

evolution in a peri-Gondwanan realm Journal of Geology Volume 116,

Number 6, Pages619-639

27. Vega-Granillo, R., Salgado-Souto S, Herrera-Urbina, S., Valencia

V.A., Meza-Figueroa D., Talavera-Mendoza O., 2008. Intra-Iapetian

origin of Rio Fuerte Formation, northwestern Mexico, evidences for

its exotic nature respect southwestern North America. Journal of

South American Earth Sciences. Volume 26, Issue 4, Pages 343-354

28. Jonsthon, S., Gehrels, G. E., Valencia, V. A. and Ruiz J. Small-

Volume U-Pb Zircon Geochronology by Laser Ablation-Multicollector-

ICP-MS. Chemical Geology, doi: 10.1016/j.chemgeo.2008.11.00

2009

29. Escalona-Alc zar, F.J., Delgado-Argote, L.A., Weber, B., N ez-Pe a,

P., Valencia, V.A. and Ortiz-Acevedo O. Analysis Of Stratigraphy,

Kinematics And U-Pb Dating Of Detrital Zircons From The Sierra De

Zacatecas, Mexico. Revista Mexicana de Ciencias Geol gicas, v. 26,

n m. 1, 2009, p. 48-64

30. Valencia, V. A., Ducea, M. Talavera-Mendoza, O., Gehrels, G., Ruiz,

J., Shoemaker, S. LA-MC-ICPMS U-Pb systematics: constraints for the

magmatism and north-western boundary of the Xolapa Terrane. Revista

Mexicana de Ciencias.

31. Weber, B., Valencia, V.A., Schaaf, P., Ortega-Gutierrez, F.,

Detrital Zircon Ages From The Lower Santa Rosa Formation, Chiapas:

Implications On Regional Paleozoic Stratigraphy. Revista Mexicana

de Ciencias Geologicas.

32. Cardona, A., Valencia, V.A., Bustamante, C., Garcia-Casco, A. Ojeda,

G., Ruiz, J., Saldarriaga, M., Weber, M., Tectonomagmatic Setting

And Provenance Of The Santa Marta Schists, Northern Colombia:

Insights On The Growth And Approach Of Cretaceous Caribbean Oceanic

Terranes To The South American Continent. In Press Journal of South

American Earth Sciences

33. Cardona, A., Ruiz, J., Valencia, V.A., Garzon, A., Ojeda, G., Weber,

M. Early Permian plutonism in the northeast Sierra Nevada de Santa

Marta, Colombian Caribbean region: tectonic setting and

paleogeographic implications within Pangea configuration, Journal

of South American Earth Sciences.

34. Gonz lez Le n, C., Valencia, V.A., Lawton T. F., Amato, A.,

Gehrels, G.E., Leggett, W.J., Montijo Contreras, O., and Fern ndez,

M.A., The Lower Mesozoic Record Of Detrital Zircon U-Pb

Geochronology Of Sonora, Mexico And Its Paleogeographic

Implications. Revista Mexicana de Ciencias Geologicas

35. P rez-Segura, E., Gonz lez-Partida, E., Valencia, V.A. Laramide

adakite magmatism in central Sonora, Mexico, and its relation to Cu-

Zn-Ni-Co skarns, Revista Mexicana de Ciencias Geologicas

36. Cardona A., Cordani, U., Ruiz, J., Valencia, V., Armstrong, R.,

Chew, D., Nutman, A., Sanchez, A. U/Pb geochronology and Nd isotopes

from the Pre-Mesozoic metamorphic basement of the Eastern Peruvian

Andes at 10 S: growth and provenance of a Late Neoproterozoic to

Carboniferous accretionary orogen at the NW margin of Gondwana.

Journal of Geology

37. Martini, M., Ferrari F., L pez-Mart nez M., Cerca-Mart nez, M.,

Valencia, V.A, Serrano-Dur n L. Cretaceous - Eocene deformation and

magmatism and the cause of Laramide orogeny in southwestern Mexico:

no role for terrane accretion GSA Memoir 204 "Backbone of the

Americas".

38. P rez Guti rrez R., Solari, L. A., Gomez Tuena, A., Valencia V. El

terreno Cuicateco: cuenca oce nica con influencia de subducci n del

Cret cico Superior en el sur de M xico? Nuevos datos estructurales,

geoqu micos y geocronol gicos. Revista Mexicana de Ciencias.

39. Maksaev, V. Munizaga, F., Valencia, V.A, Barra, F., LA-ICP-MS zircon

U-Pb geochronology of volcanic rocks to constrain the age of the

Cerrillos Formation: tectonic and metallogenic implications. Andean

Geology Vol. 36 N 2. 264-287

40. Cardona, A., Valencia, V., Mantilla, O., Ojeda, G., Rodriguez,

Forero, G., Ruiz, J., Torres, V. Mio-Pliocene Provenance Of The Mero-

1 Well, Western Baja Guajira Basin, Colombian Caribbean Region:

Basin-Uplift Relations Within Caribbean-South America Neogene

Tectonics Accepted Sedimentary Geology.

41. Cardona, A., Valencia, V., Jaramillo, C., Ojeda, G., Bayona G.,

Ruiz, J., U/Pb LAM-ICP-MS zircon geochronology and whole rock

geochemistry from a biotite tonalite of the Baja Guajira basin,

Colombia: tracking the Meso-Cenozoic migration of the Caribbean

plate Journal of Geology .

42. Cardona, A. Chew, D., Valencia, V., Bayona, G., Miskovic, A.,

Cordani, U. G., Iba ez-Mej a, M. Grenvillian remnants in the

Northern Andes: Rodinian and Phanerozoic paleogeographic

perspectives Journal of South American Earth Sciences

43. Martens,U., Weber, B., and Valencia, V.A. U/Pb geochronology proves

the existence of lower Paleozoic beds in the Maya block of Central

America, and its affinity with Avalonian-type Peri-Gondwanan

terranes. Accepted to GSA Bulletin.

44. Mantilla L.C., Valencia V.A., Barra F., Pinto J., Colegial P.,

2009. Geocronologia U-Pb de los cuerpos porfiriticos del distrito

aurifero de Vetas-California (Dpto de Santander, Colombia) Boletin

de Geologia Vol. 31, N 1, enero - junio de 2009

45. Barbeau, D., L., Davis, J., Murray K. E., Valencia, V.A., Gehrels

G. E.., Zahid K., Gombosi, D. J. Detrital-Zircon Geochronology Of

The Metasedimentary Rocks OfNorthwestern Graham Land. Accepted.

Antartic Sciences

46. Barbeau, D., L., Gombosi, D. J., Zahid K., Bizimis, M., Swason-

Hysell, N., Valencia, V.A., Gehrels G. E. U/Pb zircon constraints

on the age and provenance of the Rocas Verdes basin-fill, Tierra del

Fuego, Argentina Accepted G-cubed

47. Ernst W. G., Martens U, Valencia, V. U-Pb igneous ages of detrital

zircons in Pacheco Pass metagraywackes: Sierran-Klamath volcanic

source for Eastern Belt Franciscan trench deposition and

underplating In Press Tectonics

48. Bustamante, C., Cardona, A., Saldarriaga, M., Garcia-Casco, M.,

Valencia, V:, Weber, M Metamorfismo De Las Rocas B sicas Asociadas A

Los Esquistos De Santa Marta, Sierra Nevada De Santa Marta

(Colombia): Registro De La Colisi n Entre El Arco Caribe Y La

Margen Suramericana?. Bolet n de Ciencias de la Tierra (Universidad

Nacional de Colombia).

49. Maksaev, V. Almonacid, T.A., Munizaga, F., Valencia, V.A.,

McWilliams, M., Barra, F. Geochronological and thermochronological

constraints for the porphyry copper mineralization in the Domeyko

alteration zone, northern Accepted Andean Geology.

50. Ayala-Calvo, R.C.; Bayona-Chaparro, G.A.; Ojeda-Marulanda, C.;

Cardona, A.; Valencia, V.; Padron,C.E.; Yoris, F.; Mesa-Salamanca,

J. & Garcia, A. (2009): Estratigrafia y procedencia de las unidades

comprendidas entre el Campaniano y el Paleogeno en la subcuenca de

Cesar: aportes a la evoluci n tect nica del rea.- GEOLOG A

COLOMBIANA, 34, pp. 3-33.

51. Ducea, M. Otamendi, J., Bergantz, G., Stair, K., Valencia, V.,

Gehrels, G. Timing constraints on building an intermediate plutonic

arc crustal section; U-Pb geochronology of the Sierra Valle Fertil,

Famatinian arc, Argentina Accepted Tectonics

52. D vila Alcocer, V., Centeno Garc a, E., Valencia,V., Fitz.E. Una

nueva interpretaci n de la estratigraf a de la Regi n de Tolim n,

Estado de Quer taro. Boletin de la Sociedad Geologica Mexicana.

Vol.61-3. P 491-497.

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