Isotope provinces in Laramide and mid-Tertiary igneous rocks of northwestern Mexico (Chihuahua and Sonora) and their relation to basement configuration

Special Paper of the Geological Society of America

Volumn 393, Issue , 2005, Pages 671-692

  Housh, Todd B ^a   McDowell, Fred W ^a  

^a UNIVERSITY OF TEXAS AT AUSTIN   (United States)

Author keywords

Basement; Mexico; Radiogenic isotopes; Sierra madre occidental

Indexed keywords

BUILDINGS; EXPLORATORY GEOCHEMISTRY; GEOGRAPHICAL DISTRIBUTION; IGNEOUS ROCKS; LEAD COMPOUNDS; NEODYMIUM; STRONTIUM;

BASEMENT; ME-XICO; ND ISOTOPIC COMPOSITIONS; NORTH AMERICAN CRATONS; PROTEROZOIC BASEMENT; RADIOGENIC ISOTOPES; SIERRA MADRE OCCIDENTAL; SR ISOTOPIC COMPOSITIONS;

ISOTOPES;

ACCRETION; BASEMENT ROCK; CRATON; IGNEOUS GEOCHEMISTRY; ISOTOPIC COMPOSITION; LARAMIDE OROGENY; LEAD ISOTOPE; NEODYMIUM ISOTOPE; OVERPRINTING; PROTEROZOIC; STRONTIUM ISOTOPE;

CHIHUAHUA; MEXICO [NORTH AMERICA]; OUACHITA MOUNTAINS; SIERRA MADRE OCCIDENTAL; SIERRA MADRE [MEXICO]; SONORA; UNITED STATES;

EID: 73849091356     PISSN: 00721077     EISSN: None     Source Type: Book Series    
DOI: 10.1130/0-8137-2393-0.671     Document Type: Article

References (106)

1. Albrecht, A., Ward, D.W., Bufler, R., Dobbelstein, A., and Brookins, D.G., 1990, Application of the Rb-Sr dating technique to Tertiary siliceous igneous rocks, northern Sierra Madre Occidental, Chihuahua, Mexico: Isochron/West, v. 55, p. 6-9.
2. Albrecht, A., and Goldstein, S.L., 2000, Effects of basement composition and age on silicic magmas across an accreted terrane-Precambrian crust boundary, Sierra Madre Occidental, Mexico: Journal of South American Earth Sciences, v. 13, p. 255-273, doi: 10.1016/S0895-9811(00)00014-6. (Pubitemid 30693326)
3. Anderson, T.H., and Schmidt, V.A., 1983, The evolution of Middle America and the Gulf of Mexico-Caribbean Sea region during Mesozoic time: Geological Society of America Bulletin, v. 94, p. 941-966, doi: 10.1130/0016-7606(1983) 94<941:TEOMAA>2.0.CO;2.
4. Anderson, T.H., and Silver, L.T., 1977, U-Pb isotope ages of granitic plutons near Cananea, Sonora: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 72, p. 827-836.
5. Anderson, T.H., and Silver, L.T., 1979, The role of the Mojave-Sonora Megashear in the tectonic evolution of northern Sonora, in Anderson, T.H., and Roldén-Quintana, J., eds., Geology of Northern Sonora, Guidebook, Field Trip #27: Geological Society of America, p. 59-68.
6. Anderson, T.H., and Silver, L.T., 1981, An overview of Precambrian rocks in Sonora: Universidad Nacional Autónoma de Mexico, Instituto de Geologia, Revista, v. 5, p. 131-139.
7. Anderson, T.H., Silver, L.T., and Salas, G.A., 1980, Distribution and U-Pb isotope ages of some lineated plutons, northwestern Mexico, in Crittenden, M.D., Jr., Coney, P.J., and Davis, G.H., eds., Cordilleran metamorphic core complexes: Geological Society of America, p. 269-283.
8. Anthony, E.Y., and Titley, S.R., 1988, Progressive mixing of isotopic reservoirs during magma genesis at the Sierrita porphyry copper deposit, Arizona; inverse solutions: Geochimica et Cosmochimica Acta, v. 52, p. 2235-2249, doi: 10.1016/0016-7037(88)90126-3.
9. Armin, R.A., 1987, Sedimentology and tectonic significance of Wolfcampian (Lower Permian) conglomerates in the Pedregosa basin: Southeastern Arizona, southwestern New Mexico, and northern Mexico: Geological Society of America Bulletin, v. 99, p. 42-65, doi: 10.1130/0016-7606(1987)99<42:SATSOW>2.0. CO;2.
10. Barreiro, B., Cameron, K.L., Cameron, M., and Grunder, A., 1982, A lead isotope study of silicic and intermediate volcanic rocks from south-central Chile and the Sierra Madre Occidental, Mexico: Carnegie Institution of Washington Yearbook, v. 81, p. 494-498.
11. Bennett, V.C., and DePaolo, D.J., 1987, Proterozoic crustal history of the western United States as determined by neodymium isotopic mapping: Geological Society of America Bulletin, v. 99, p. 674-685, doi: 10.1130/0016-7606(1987)99<674:PCHOTW>2.0.CO;2.
12. Bikerman, M., Bell, K., and Card, J.W., 1992, Strontium and neodymium iso- topic study of the western Mogollon-Datil volcanic region, New Mexico, USA: Contributions to Mineralogy and Petrology, v. 109, p. 459-470, doi: 10.1007/BF00306549.
13. Blount, J.G., Walker, N.W., and Carlson, W.D., 1988, Geochemistry and U-Pb zircon ages of mid-Proterozoic metaigneous rocks from Chihuahua, Mexico: Geological Society of America Abstracts with Programs, v. 20, p. A-205.
14. Blount, J.G., 1993, The geochemistry, petrogenesis, and geochronology of the Precambrian meta-igneous rocks of Sierra del Cuervo and Cerro El Car- rizalillo, Chihuahua, Mexico [Ph.D. dissertation]: Austin, University of Texas at Austin, 242 p.
15. Bockoven, N.T., 1980, Reconnaissance geology of the Yécora-Ocampo area, Sonora and Chihuahua, Mexico [Ph.D. dissertation]: Austin, University of Texas at Austin, 241 p.
16. Bouse, R.M., Ruiz, J., Titley, S.R., Tosdal, R.M., and Wooden, J.L., 1999, Lead isotope compositions of Late Cretaceous and early Tertiary igneous rocks and sulfide minerals in Arizona; implications for the sources of plutons and metals in porphyry copper deposits: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 94, p. 211-244.
17. 144 Nd compositions of Cenozoic orogenic dacites from Baja California, northwestern Mexico, and adjacent west Texas: evidence for predominance of a subcrustal component: Contributions to Mineralogy and Petrology, v. 91, p. 1-11, doi: 10.1007/BF00429422.
18. Cameron, K.L., Nimz, G.J., Kuentz, D., Niemeyer, S., and Gunn, S., 1989, Southern Cordilleran basaltic andesite suite, southern Chihuahua, Mexico: A link between Tertiary continental arc and flood basalt magmatism in North America: Journal of Geophysical Research, v. 94, p. 7817-7840.
19. Cameron, K.L., Parker, D.F., and Sampson, D.E., 1996, Testing crustal melting models for the origin of flood rhyolites; a Nd-Pb-Sr isotopic study of the Tertiary Davis Mountains volcanic field, West Texas: Journal of Geophysical Research, v. 101, p. 20,407-20,422, doi: 10.1029/96JB00935.
20. Cameron, K.L., and Robinson, J.V., 1990, Comments on "Nd-Sr isotopic compositions of lower crustal xenoliths: evidence for the origin of mid- Tertiary felsic volcanics in Mexico" by J. Ruiz, P.J. Patchett, and R.J. Arculus: Contributions to Mineralogy and Petrology, v. 104, p. 609-614, doi: 10.1007/BF00306668.
21. Cameron, K.L., Robinson, J.V., Niemeyer, S., Nimz, G.J., Kuentz, D.C., Harmon, R.S., Bohlen, S.R., and Collerson, K.D., 1992, Contrasting styles of pre-Cenozoic and mid-Tertiary crustal evolution in northern Mexico: Evidence from deep crustal xenoliths from La Olivina: Journal of Geophysical Research, v. 97, p. 17353-17376.
22. Campa, M.F., and Coney, P.J., 1983, Tectonostratigraphic terranes and mineral resource distributions in Mexico: Canadian Journal of Earth Sciences, v. 20, p. 1040-1051.
23. Chamberlain, K.R., and Bowring, S.A., 1990, Proterozoic geochronologic and isotopic boundary in NW Arizona: Journal of Geology, v. 98, p. 399-416.
24. Cochemé, J.J., and Demant, A., 1991, Geology of the Yécora area, northern Sierra Madre Occidental, Mexico, in Pérez-Segura, E., and Jacques- Ayala, C., eds., Studies of Sonoran Geology: Geological Society of America Special Paper 254, p. 81-94.
25. Coney, P.J., and Campa, M.F., 1987, Lithotectonic terrane map of Mexico (west of the 91st meridian): U.S. Geological Survey Miscellaneous Field Studies Map MF-1874-D, scale 1:2,500,000.
26. Damon, P.E., Shafiqullah, M., Roldén-Quintana, J., and Cochemé, J.J., 1983, El Batolito Laramide (90-40 Ma) de Sonora: Memoria XV Convencion Nacional, Asociación de Ingenieros de Minas, Metalurgistas y Geólogos de México, A.C., p. 65-95.
27. Davis, J., and Hawkesworth, C., 1993, The petrogenesis of 30-20 Ma basic and intermediate volcanics from the Mogollon-Datil volcanic field, New Mexico, USA: Contributions to Mineralogy and Petrology, v. 115, p. 165-183, doi: 10.1007/BF00321218.
28. Davis, J.M., and Hawkesworth, C.J., 1995, Geochemical and tectonic transitions in the evolution of the Mogollon-Datil volcanic field, New Mexico, U.S.A: Chemical Geology, v. 119, p. 31-53, doi: 10.1016/0009-2541(94)00094-O.
29. Denison, R.E., Burke, W.H., Jr., Hetherinton, E.A., and Otto, J.B., 1971, The basement rock framework of parts of Texas, southern New Mexico and northern Mexico, in The geologic framework of the Chihuahua tectonic belt: West Texas Geological Society Publication 71-59, p. 3-14.
30. DePaolo, D.J., and Farmer, G.L., 1984, Isotopic data bearing on the origin of Mesozoic and Tertiary granitic rocks in the western United States: Philosophical Transactions of the Royal Society of London, Series A: Mathematical and Physical Sciences, v. 310, p. 743-753.
31. Dickinson, W.R., 1981, Plate tectonic evolution of the southern Cordillera, in Dickinson, W.R., and Payne, W.D., eds., Relations of tectonics to ore deposits in the southern Cordillera: Arizona Geological Digest, v. 14, p. 113-135.
32. Duex, T.W., 1983, Geology, geochemistry, and geochronology of volcanic rocks between Cuauhtemoc and La Junta, central Chihuahua, Mexico [Ph.D. dissertation]: Austin, University of Texas at Austin, 234 p.
33. Farmer, G.L., and DePaolo, D.J., 1983, Origin of Mesozoic and Tertiary granite in the western United States and implications for pre-Mesozoic crustal structure: 1. Nd and Sr isotopic studies in the geocline of the northern Great Basin: Journal of Geophysical Research, v. 88, p. 3379-3401.
34. Farmer, G.L., and DePaolo, D.J., 1984, Origin of Mesozoic and Tertiary granite in the western United States and implications for pre-Mesozoic crustal structure: 2. Nd and Sr isotopic studies of unmineralized and Cu- and Mo- mineralized granite in the Precambrian craton: Journal of Geophysical Research, v. 89, p. 10141-10160.
35. González-León, C.M., Mcintosh, W.C., Lozano-Santacruz, R., Valencia- Moreno, M., Amaya-Martinez, R., and Rodriguez-Castaneda, J.L., 2000, Cretaceous and Tertiary sedimentary, magmatic, and tectonic evolution of north-central Sonora (Arizpe and Bacanuchi Quadrangles), northwest Mexico: Geological Society of America Bulletin, v. 112, p. 600-610, doi: 10.1130/0016-7606(2000)112<0600:CATSMA>2.3.CO;2.
36. Gunderson, R., Cameron, K., and Cameron, M., 1986, Mid-Cenozoic high- K calc-alkalic and alkalic volcanism in eastern Chihuahua, Mexico; geology and geochemistry of the Benavides-Pozos area: Geological Society of America Bulletin, v. 97, p. 737-753, doi: 10.1130/0016-7606(1986)97<737:MHCAAV>2. 0.CO;2.
37. Haenggi, W.T., 2001, Tectonic history of the Chihuahua trough, Mexico and adjacent USA, Part I: the pre-Mesozoic setting: Boletin de la Sociedad Geológica Mexicana, v. 54, p. 28-66.
38. Haenggi, W.T., 2002, Tectonic history of the Chihuahua trough, Mexico and adjacent USA, Part II: Mesozoic and Cenozoic: Boletin de la Sociedad Geológica Mexicana, v. 55, p. 38-94.
39. Handschy, J.W., and Dyer, R., 1987, Polyphase deformation in Sierra del Cuervo, Chihuahua, Mexico: Evidence for Ancestral Rocky Mountain tectonics in the Ouachita foreland of northern Mexico: Geological Society of America Bulletin, v. 99, p. 618-632, doi: 10.1130/0016-7606(1987)99<618:PDISDC>2. 0.CO;2.
40. Handschy, J.W., Keller, G.R., and Smith, K.J., 1987, The Ouachita system in northern Mexico: Tectonics, v. 6, p. 323-330.
41. Hart, S.R., 1984, A large-scale isotopic anomaly in the Southern Hemisphere mantle: Nature, v. 309, p. 753-757, doi: 10.1038/309753a0.
42. Henry, C.D., and Fredrikson, G., 1987, Geology of part of southern Sinaloa, Mexico, adjacent to the Gulf of California: Geological Society of America Map and Chart Series, MCH067, 1 sheet, scale 1:250,000, 14 p.
43. Hoffman, P.F., 1988, United Plates of America, The birth of a craton: Early Protero- zoic assembly and growth of Laurentia: Annual Reviews of Earth and Planetary Science, v. 16, p. 543-603, doi: 10.1146/annurev.ea.16.050188. 002551.
44. Housh, T., and McMahon, T.P., 2000, Ancient isotopic characteristics of Neogene potassic magmatism in western New Guinea (Irian Jaya, Indonesia): Lithos, v. 50, p. 217-239, doi: 10.1016/S0024-4937(99)00043-2. (Pubitemid 30144506)
45. Ide, S., 1986, Geology of mid-Tertiary volcanic rocks in the Laboricita-General Trias area, central Chihuahua, Mexico [M.A. thesis]: Austin, Texas, University of Texas at Austin, p. 155.
46. James, E.W., and Henry, C.D., 1993a, Southeastern extent of the North American craton in Texas and northern Chihuahua as revealed by Pb isotopes: Geological Society of America Bulletin, v. 105, p. 116-126, doi: 10.1130/0016-7606(1993)105<0116:SEOTNA>2.3.CO;2.
47. James, E.W., and Henry, C.D., 1993b, Pb isotopes of ore deposits in Trans- Pecos Texas and northeastern Chihuahua, Mexico: Basement, igneous, and sedimentary sources of metals: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 88, p. 934-947.
48. James, E.W., Henry, C.D., and McDowell, F.W., 1994, Defining the southeastern limit of North American middle Proterozoic basement in Texas and Chihuahua with lead isotopes: Geological Society of America Abstracts with Programs, v. 26, no. 6, p. 20.
49. Karlstrom, K.E., and Bowring, S.A., 1988, Early Proterozoic assembly of tectonostratigraphic terranes in southwestern North America: Journal of Geology, v. 96, p. 561-576.
50. Karlstrom, K.E., Bowring, S.A., and Conway, C.M., 1987, Tectonic significance of an Early Proterozoic two-province boundary in central Arizona: Geological Society of America Bulletin, v. 99, p. 529-538, doi: 10.1130/0016-7606(1987)99<529:TSOAEP>2.0.CO;2.
51. Keller, P.C., Bockoven, N.T., and McDowell, F.W., 1982, Tertiary volcanic history of the Sierra del Gallego area, Chihuahua, Mexico: Geological Society of America Bulletin, v. 93, p. 303-314, doi: 10.1130/0016-7606(1982)93<303: TVHOTS>2.0.CO;2.
52. Kempton, P.D., Harmon, R.S., Hawkesworth, C.J., and Moorbath, S., 1990, Petrology and geochemistry of lower crustal granulites from the Geron- imo Volcanic Field, southeastern Arizona: Geochimica et Cosmochimica Acta, v. 54, p. 3401-3426, doi: 10.1016/0016-7037(90)90294-U.
53. 86 in Mesozoic granitic rocks and intruded wall rocks in central California: Geological Society of America Bulletin, v. 84, p. 3489-3512, doi: 10.1130/0016-7606(1973)84<3489:VISRKN>2.0.CO;2.
54. Kuentz, D.C., Cameron, K.L., and Niemeyer, S., 1992, Isotope provinces of southeastern Chihuahua and adjacent west Texas defined by mid-Ceno- zoic volcanic rocks, in Clark, K.F., Roldán-Quintana, J., and Schmidt, R.H., eds., Guidebook for the 1992 Field Conference: El Paso Geological Society Publication 24, p. 111-118.
55. Lang, J.R., and Titley, S.R., 1998, Isotopic and geochemical characteristics of Laramide magmatic systems in Arizona and implications for the genesis of porphyry copper deposits: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 93, p. 138-170.
56. Lanphere, M.A., Cameron, K.L., and Cameron, M., 1980, Sr isotope geochemistry of voluminous rhyolitic ignimbrites and related rocks, western Mexico: Nature, v. 286, p. 594-596, doi: 10.1038/286594a0. (Pubitemid 10015362)
57. Lopez, R., Cameron, K.L., and Jones, N.W., 1997, Evidence from U-Pb zircon ages for the Grenvillian reworking of 1.8 Ga crust south of the Ouachita suture in the Coahuila terrane, northern Mexico: Eos (Transactions, American Geophysical Union), v. 78, p. F785.
58. Lopez, R., Cameron, K.L., and Jones, N.W., 1998, New Paleoproterozoic, Grenvillian, and Pan-African U-Pb zircon ages of boulders from the Coahuila terrane; implications for the Precambrian tectonic history of northern Mexico: Geological Society of America Abstracts with Programs, v. 30, no. 7, p. 354.
59. McDowell, F.W., 1993, The volcanic section near Yécora, Sonora and its regional significance, in Rodriguez, J.L. and Calmus, T., eds., Libreto-Guia Excur- siónes del III Simpósio de la Geologia de Sonora y areas adjacentes, p. 185-194.
60. McDowell, F.W., and Clabaugh, S.E., 1979, Ignimbrites of the Sierra Madre Occidental and their relation to the tectonic history of western Mexico, in Chapin, C.E., and Elson, W.E., eds., Ash-flow tuffs: Geological Society of America Special Paper 180, p. 113-124.
61. McDowell, F.W., Wark, D.A., and Aguirre-Díaz, G., 1990, The Tertiary ignimbrite flare-up in western Mexico: Geological Society of America Abstracts with Programs, v. 22, no. 3, p. 66.
62. McDowell, F.W., and Mauger, R.W., 1994, K-Ar and U-Pb zircon chronology of Late Cretaceous and Tertiary magmatism in central Chihuahua State, Mexico: Geological Society of America Bulletin, v. 106, p. 118-132, doi: 10.1130/0016-7606(1994)106<0118:KAAUPZ>2.3.CO;2.
63. McDowell, F.W., Roldán-Quintana, J., and Amaya-Martinez, R., 1997, Interrelationship of sedimentary and volcanic deposits associated with Tertiary extension in Sonora, Mexico: Geological Society of America Bulletin, v. 109, p. 1349-1360, doi: 10.1130/0016-7606(1997)109<1349:IOSAVD>2.3.CO;2.
64. McDowell, F.W., Housh, T.B., and Wark, D.A., 1999, Nature of the crust beneath west-central Chihuahua, Mexico, based upon Sr, Nd, and Pb isotopic compositions at the Tomóchic volcanic center: Geological Society of America Bulletin, v. 111, p. 823-830, doi: 10.1130/0016-7606(1999)111<0823: NOTCBW>2.3.CO;2.
65. McDowell, F.W., Roldán-Quintana, J., and Connelly, J.N., 2001, Duration of Late Cretaceous-early Tertiary magmatism in east-central Sonora, Mexico: Geological Society of America Bulletin, v. 113, p. 521-531, doi:10.1130/0016-7606(2001)113<0521:DOLCET>2.0.CO;2.
66. McKee, J.W., Jones, N.W., and Anderson, T.H., 1999, Late Paleozoic and early Mesozoic history of the Las Delicias terrane, Coahuila, Mexico, in Bartolini, C., Wilson, J.L., and Lawton, T., eds., Mesozoic Sedimentary and Tectonic History of North-Central Mexico: Geological Society of America Special Paper 340, p. 161-189.
67. McKee, J.W., Jones, N.W., and Long, L.E., 1984, History of recurrent activity along a major fault in northeastern Mexico: Geology, v. 12, p. 103-107.
68. McMillan, N.J., and Dickin, A.P., 1994, The Uvas volcanic field; early Rio Grande Rift lithospheric magmatism in southern New Mexico: Geological Society of America Abstracts with Programs, v. 26, no. 7, p. 367-368.
69. McMillan, N.J., Dickin, A.P., and Haag, D., 2000, Evolution of magma source regions in the Rio Grande rift, southern New Mexico: Geological Society of America Bulletin, v. 112, p. 1582-1593, doi: 10.1130/0016- 7606(2000)112<1582:EOMSRI>2.0.CO;2.
70. Mead, R.D., Kesler, S.E., Foland, K.A., and Jones, L.M., 1988, Relationship of Sonoran tungsten mineralization to the metallogenic evolution of Mexico, in Clark, K.F., Salas P., and Guillermo, A., eds., A special issue devoted to the geology and mineral deposits of Mexico: Economic Geology, v. 83, p. 1943-1965.
71. Megaw, P.K.M., and McDowell, F.W., 1983, Geology and geochronology of volcanic rocks of the Sierra Pastorias area, Chihuahua, Mexico, in Clark, K.F., and Goodell, P.C., eds., Geology and mineral resources of north-central Chihuahua: El Paso Geological Society Publication 15, p. 195-204.
72. Menzies, M.A., Leeman, W.P., and Hawkesworth, C.J., 1983, Isotope geochemistry of Cenozoic volcanic rocks reveals mantle heterogeneity below western USA: Nature, v. 303, p. 205-209, doi: 10.1038/303205a0.
73. Mora-Alvarez, G., 1992, History of Cenozoic magmatism in the Sierra Santa Ursula, Sonora, Mexico [M.A. thesis]: Austin, The University of Texas at Austin, 152 p.
74. Mora-Alvarez, G., 1993, Relaciones Estratigréficas y Geochronológicas entre las Unidades Volcénicas de la Sierra Santa Ursula, en Sonora, y el Mag- matismo de la región del Golfo de California, in Delgado-Argote, L.A., and Martin-Barajas, A., eds. Contribuciones a la Tectónica del Occidente de México: Unión Geofisica Mexicana Monografia No. 1, p. 123-146.
75. Mora-Alvarez, G., and McDowell, F.W., 2000, Miocene volcanism during late subduction and early rifting in the Sierra Santa Ursula of western Sonora, Mexico, in Delgado-Granados, H., Aguirre-Diaz, G., and Stock, J.M., eds., Cenozoic Tectonics and Volcanism of Mexico: Geological Society of America Special Paper 334, p. 123-141.
76. Mora-Klepeis, G., McDowell, F.W., and Ortega-Rivera, A., 1997, Late Miocene volcanism in west-central Sonora: an expression of rift or subduc- tion-related magmatism: Geological Society of America Abstracts with Programs, v. 29, no. 6, p. A481.
77. Mosher, S., 1998, Tectonic evolution of the southern Laurentian Grenville oro- genic belt: Geological Society of America Bulletin, v. 110, p. 1357-1375, doi: 10.1130/0016-7606(1998)110<1357:TEOTSL>2.3.CO;2.
78. Nimz, G.J., Cameron, K.L., and Niemeyer, S., 1993, The La Olivina pyrox- enite suite and the isotopic compositions of mantle basalts parental to the mid-Cenozoic arc volcanism of northern Mexico: Journal of Geophysical Research, v. 98, p. 6489-6509.
79. Poole, F.G., Madrid, R.J., and Oliva-Becerril, F., 1991, Geological setting and origin of the stratiform barite in central Sonora, Mexico, in Raines, G.L., et al., eds., Geology and ore deposits of the Great Basin, Volume I: Geological Society of Nevada, p. 517-522.
80. Poole, F.G., Stewart, J.H., Berry, W.B.N., Harris, A.G., Repetski, J.E., Madrid, R.J., Ketner, K.B., Carter, C., and Morales-Ramirez, J.M., 1995, Ordovi- cian ocean-basin rocks of Sonora, Mexico, in Cooper, J.D., Droser, M.L., and Finney, S.C., eds., Ordovician Odyssey: Short Papers for the Seventh International Symposium on the Ordovician System: Pacific Section Society for Sedimentary Geology, p. 277-284.
81. Potter, L.S., 1996, Chemical and isotopic variation along strike in the Eastern alkalic belt, Trans-Pecos magmatic province, Texas and New Mexico [Ph.D. dissertation]: Austin, University of Texas at Austin, p. 247.
82. Roden, M.F., Irving, A.J., and Murthy, V.R., 1988, Isotopic and trace element composition of the upper mantle beneath a young continental rift; results from Kilbourne Hole, New Mexico: Geochimica et Cosmochimica Acta, v. 52, p. 461-173, doi: 10.1016/0016-7037(88)90101-9.
83. Roldén-Quintana, J., 1991, Geology and chemical composition of El Jaralito and Aconchi batholiths in east-central Sonora, in Pérez-Segura, E., and Jacques-Ayala, C., eds., Studies of Sonoran Geology: Geological Society of America Special Paper 254, p. 19-36.
84. Rudnick, R.L., and Cameron, K.L., 1991, Age diversity of the deep crust in northern Mexico: Geology, v. 19, p. 1197-1200, doi: 10.1130/0091-7613(1991) 019<1197:ADOTDC>2.3.CO;2.
85. Ruiz, J., Patchett, P.J., and Arculus, R.J., 1988, Nd-Sr isotopic compositions of lower crustal xenoliths: Evidence for the origin of mid-Tertiary felsic volcanics in Mexico: Contributions to Mineralogy and Petrology, v. 99, p. 36-43, doi: 10.1007/BF00399363.
86. Sawlan, M.G., 1991, Magmatic evolution of the Gulf of California rift: American Association of Petroleum Geologists Memoir 47, p. 301-369.
87. Schaaf, P., Morén-Zenteno, D., Hernéndez-Bernal, M.S., Solis-Pichardo, G., Tolson, G., and Köhler, H., 1995, Paleogene continental margin truncation in southwestern Mexico: Geochronological evidence: Tectonics, v. 14, p. 1339-1350, doi: 10.1029/95TC01928. (Pubitemid 26462246)
88. Sedlock, R.L., Ortega-Gutierrez, F., and Speed, R.C., 1993, Tectonostrati- graphic terranes and tectonic evolution of Mexico: Geological Society of America Special Paper 278, 153 p.
89. Shurbet, D.H., and Cebull, S.E., 1987, Tectonic interpretation of the westernmost part of the Ouachita-Marathon (Hercynian) orogenic belt, west Texas-Mexico: Geology, v. 15, p. 458-461, doi: 10.1130/0091-7613(1987)15<458: TIOTWP>2.0.CO;2.
90. Silver, L.T., and Anderson, T.H., 1974, Possible left-lateral early to middle Mesozoic disruption of the southwestern North American craton margin: Geological Society of America Abstracts with Programs, v. 6, p. 955.
91. Silver, L.T., and Chappell, B.W., 1988, The Peninsular Ranges batholith: An insight into the evolution of the Cordilleran batholiths of southwestern North America: Royal Society of Edinburgh Transactions, v. 79, p. 105-121.
92. Smith, R.D., Cameron, K.L., McDowell, F.W., Niemeyer, S., and Sampson, D.E., 1996, Generation of voluminous silicic magmas and formation of mid- Cenozoic crust beneath north-central Mexico: evidence from ignimbrites, associated lavas, deep crustal granulites, and mantle pyroxenites: Contributions to Mineralogy and Petrology, v. 123, p. 375-389, doi: 10.1007/ s004100050163.
93. Stewart, J.H., 1988, Latest Proterozoic and Paleozoic southern margin of North America and the accretion of Mexico: Geology, v. 16, p. 186-189, doi:10.1130/0091-7613(1988)016<0186:LPAPSM>2.3.CO;2.
94. Stewart, J.H., 1992, Late Proterozoic and Paleozoic southern margin of North America in northern Mexico, in Clark, K.F., Roldén-Quintana, J., and Schmidt, R.H., eds., Geology and Mineral Resources of Northern Sierra Madre Occidental, Mexico: El Paso Geological Society Publication 24, p. 291-299.
95. Stewart, J.H., Poole, F.G., Ketner, K.B., Madrid, R.J., Roldén-Quintana, J., and Amaya-Martinez, R., 1990, Tectonics and stratigraphy of the Paleozoic and Triassic southern margin of North America, Sonora, Mexico, in Gehrels, G.E., and Spencer, J.E., eds., Geological excursions through the Sonoran desert region, Arizona and Sonora: Arizona Bureau of Geology and Mineral Technology Special Paper 7, p. 183-202.
96. Stock, J.M., 1989, Sequence and geochronology of Miocene rocks adjacent to the main Gulf escarpment: Southern Valle Chico, Baja California Norte, Mexico: Geofisica Internacional, v. 28, p. 851-896.
97. Stock, J.M., and Lee, J., 1994, Do microplates in subduction zones leave a geological record?: Tectonics, v. 13, p. 1472-1487, doi: 10.1029/94TC01808.
98. Swanson, E.R., 1977, Reconnaissance geology of the Tomochic-Ocampo area, Sierra Madre Occidental, Chihuahua, Mexico [Ph.D. dissertation]: Austin, University of Texas at Austin, 154 p.
99. Valencia-Moreno, M., Ruiz, J., Barton, M.D., Patchett, P.J., Zürcher, L., Hod-kinson, D.G., and Roldén-Quintana, J., 2001, A chemical and isotopic study of the Laramide granitic belt of northwestern Mexico: Identification of the southern edge of the North American Precambrian basement: Geological Society of America Bulletin, v. 113, p. 1409-1422, doi: 10.1130/0016-7606(2001)113<1409:ACAISO>2.0.CO;2.
100. Verplanck, P.L., Farmer, G.L., McCurry, M., and Mertzman, S.A., 1999, The chemical and isotopic differentiation of an epizonal magma body; Organ Needle Pluton, New Mexico: Journal of Petrology, v. 40, p. 653-678, doi:10.1093/petrology/40.4.653.
101. Wark, D.A., 1983, Geology of the mid-Tertiary volcanic terrane at Buenos Aires, Chihuahua, Mexico [M.A. thesis]: Austin, University of Texas at Austin, p. 156.
102. Wark, D.A., 1991, The role of mafic and intermediate composition magmas in rhyolite genesis, Sierra Madre Occidental, Mexico: Journal of Geophysical Research, v. 96, p. 13389-13411.
103. Wark, D.A., Kempter, K.A., and McDowell, F.W., 1990, Evolution of waning calcalkalic magmatism, northern Sierra Madre Occidental, Mexico: Geological Society of America Bulletin, v. 102, p. 1555-1564, doi: 10.1130/0016-7606(1990) 102<1555:EOWSRM>2.3.CO;2.
104. Wooden, J.L., and Miller, D.M., 1990, Chronologic and isotopic framework for Early Proterozoic crustal evolution in the eastern Mojave desert region, SE California: Journal of Geophysical Research, v. 95, p. 20133-20146.
105. Wooden, J.L., Stacey, J.S., Doe, B.R., Howard, K.A., and Miller, D.M., 1988, Pb isotopic evidence for the formation of Proterozoic crust in the southwestern United States, in Ernst, W.G., ed., Metamorphism and crustal evolution of the western United States (Rubey Volume VII): Englewood Cliffs; Prentice Hall, p. 68-86.
106. Zartman, R.E., 1974, Lead isotope provinces in the Cordillera of the western United States and their geologic significance: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 69, p. 792-805.