Triassic plutonism in southern California: Southward younging of arc initiation along a truncated continental margin

Tectonics

Volumn 16, Issue 2, 1997, Pages 290-304

  Barth, A P ^a   Tosdal, R M ^b   Wooden, J L ^b   Howard, K A ^b  

^a INDIANA UNIVERSITY   (United States)

^b U S GEOLOGICAL SURVEY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CONTINENTAL MARGIN; MAGMATIC ARC; MONZONITE; PLUTONISM; SHOSHONITE; TRANSFORM FAULTING; TRIASSIC;

USA, CALIFORNIA;

EID: 0030772476     PISSN: 02787407     EISSN: None     Source Type: Journal    
DOI: 10.1029/96TC03596     Document Type: Article

References (110)

1. Armstrong, R.L. and J. Suppe, Potassium-argon geochronometry of Mesozoic igneous rocks in Nevada, Utah, and southern California, Geol. Soc. Am. Bull., 84, 1375-1392, 1973.
2. Barth, A.P., Mid-crustal emplacement of Mesozoic plutons, San Gabriel Mountains, California, and implications for the geologic history of the San Gabriel terrane, in The Nature and Origin of Cordilleran Magmatism, edited by J.L. Anderson, Mem. Geol. Soc. Am., 174, 33-45, 1990.
3. Barth, A.P., and P.L. Ehlig, Geochemistry and petrogenesis of the marginal zone of the Mount Lowe intrusion, central San Gabriel Mountains, California, Contrib. Mineral. Petrol., 100, 192-204, 1988.
4. Barth, A.P., R.M., Tosdal and J.L. Wooden, A petrologic comparison of Triassic plutonism in the San Gabriel and Mule Mountains, southern California, J. Geophys. Res., 95, 20075-20096, 1990.
5. Barth, A.P., J.L. Wooden, R.M. Tosdal, J. Morrison, D.L. Dawson, and B.M. Hemly, Origin of gneisses in the aureole of the San Gabriel anorthosite complex, and implications for the Proterozoic crustal evolution of southern California, Tectonics, 14, 736-752, 1995.
6. Bateman, P.C., Plutonism in the central part of the Sierra Nevada batholith, California, U.S. Geol. Surv. Prof. Pap., 1483, 186 pp., 1992.
7. Bateman, P.C., and F.C.W. Dodge, Variations of major chemical constituents across the central Sierra Nevada batholith, Geol. Soc. Am. Bull., 81, 409-420, 1970.
8. Blakey, R.C., and R. Gubitosa, Late Triassic paleogeography and depositional history of the Chinle Formation, southern Utah and northern Arizona, in Mesozoic Paleogeography of the West-central United States, edited by M.W. Reynolds and E.D. Dolly, pp. 57-76, Rocky Mt Sect, Soc. of Econ. Paleontol. and Mineral., Tulsa, Okla., 1983.
9. Bloomer, S.H., R.J. Stem, E. Fisk, and C.H. Geschwind, Shoshonitic volcanism in the northern Mariana arc 1. Mineralogie and major and trace element characteristics, J. Geophys. Res, 94, 4469-4496, 1989.
10. Boettcher, S.S., and J.D. Walker, Geologic evolution of Iron Mountain, central Mojave desert, California, Tectonics, 12, 372-386, 1993.
11. Brand, J.H., Mesozoic alkalic quartz monzonite and peraluminous monzogranites of the northern portion of Joshua Tree National Monument, southern California, M.S. thesis, 187 pp., Univ. of Southern Calif, Los Angeles, 1985.
12. Brand, J.H., and J.L. Anderson, Mesozoic alkalic monzonites and peraluminous ademellites of the Joshua Tree National Monument, southern California, Geol. Soc. Am. Abstr. Programs, 14, 151-152, 1982.
13. Broun, H., Stratigraphy and paleogeographic setting of Paleozoic rocks in the San Bernardino Mountains, California, in Paleozoic Paleogeography of the Western United States-II, edited by J.D. Cooper and C.R Stevens, C.H.: pp. 193-207, Pac. Sect, Soc. of Econ. Paleontol. and Mineral., Los Angeles, Calif, 1991.
14. Burchfiel, B.C., and G.A. Davis, Structural framework and evolution of the southern part of the Cordilleran orogen, western United States, Am. J. Sci., 272, 97-118, 1972.
15. Burchfiel, B.C., and G.A. Davis, Nature and controls of Cordilleran orogenesis, western United States: Extensions of and earlier synthesis, Am. J. Sci., 275-A, 363-396, 1975.
16. Burchfiel, B.C., and G.A. Davis, Mojave Desert and environs, in The Geotectonic Development of Calfornia, edited by W.G. Ernst pp. 217-252, Prentice-Hall, Englewood Cliffs, N.J., 1981.
17. Burchfiel, B.C., D.S. Cowan, and G.A Davis, Tectonic overview of the Cordilleran orogen in the western United States, in The Cordilleran Orogen: Conterminous U.S., edited by B.C. Burchfiel, P.W. Lipman, and M.L. Zoback, pp. 407-479, Geol. Soc. of Am., Boulder, Colorado, 1992.
18. Busby-Spera, C.J., Speculative tectonic model for the lower Mesozoic arc of the southwest Cordilleran United States, Geology, 16, 1121-1125, 1988.
19. Busby-Spera, C.J., J.M. Mattinson, N.R. Riggs, and E.R. Schermer, The Triassic-Jurassic magmatic arc in the Mojave-Sonoran Deserts and the Sierran-Klamath region; Similarities and differences in paleogeographic evolution, in Paleozoic and Early Mesozoic Paleogeographic Relations; Sierra Nevada, Klamath Mountains, and Related Terranes, edited by D.S. Harwood and MM Miller, Spec. Pap. Geol. Soc. Am. 225, 325-337, 1990.
20. Cameron, C.S., Geology of the Sugarloaf and Delamar Mountain areas, San Bernardino Mountains, California, Ph.D. thesis, 399 pp., Mass. Inst of Technol., Cambridge, 1981.
21. Carr, P.F., B.G. Jones, B.G. Quinn, and A.J. Wright, Toward an objective Phanerozoic time scale, Geology, 12, 274-277, 1984.
22. Chen, J.H., and J.G. Moore, Uranium-lead isotopic ages from the Sierra Nevada batholith, California, J. Geophys. Res., 87, 4761-4784, 1982.
23. Davis, M.J., D.L. Farber, J.L. Wooden, and J.L. Anderson, Conflicting tectonics? Contraction and extension at middle and upper crustal levels along the Cordilleran Late Jurassic arc, southeastern California, Geology, 22, 247-250, 1994.
24. DePaolo, D.J., A neodymium and strontium isotopic study of calc-alkaline granitic batholiths in the Sierra Nevada and Peninsular Ranges, California, J. Geophys. Res., 86, 10470-10488, 1981.
25. Dibblee, T.W., Geologic map of the Twentynine Palms quadrangle, San Bernardino and Riverside Counties, California, Map 1-561, scale 1:62,500, U.S. Geol. Surv., Washington, D.C., 1968.
26. Dickinson, W.R., Plate tectonics and the continental margin of California, in The Geotectonic Development of California, edited by W.G. Ernst, pp. 1-28, Prentice-Hall, Englewood Cliffs, N.J., 1981.
27. Dickinson, W.R., and T. Hatherton, Andesitic volcanism and seismicity around the Pacific, Science, 157, 801-803, 1967.
28. Dillon, J.T., Geology of the Chocolate and Cargo Muchacho Mountains, southeasternmost California, Ph.D. thesis, 405 pp., Univ. of Calif., Santa Barbara, 1975.
29. Dillon, J.T., and P.L. Ehlig, Displacement on the southern San Andreas fault, in The San Andreas Fault System, edited by R.E. Powell, Mem Geol. Soc. Am., 178, 1993.
30. Dunne, G.C., and J.B. Saleeby, Kern Plateau shear zone, southern Sierra Nevada - New data concerning age and northward continuation, Geol. Soc. Am. Abstr. Programs, 25, 33, 1993.
31. Dunne, G.C., and J.D. Walker, New age constraints on Jurassic volcanism and tectonism, southern Owens Valley area, east-central California, Geol. Soc. Am. Abstr. Programs, 23, A248-249, 1991.
32. Ehlig, P.L., Origin and tectonic history of the basement terrane of the San Gabriel Mountains, central Transverse Ranges in The Geotectonic Development of California, edited by W.G. Ernst, pp. 253-283, Prentice-Hall, Englewood Cliffs, N.J., 1981.
33. Elison, M.W., R.C. Speed, and R.W. Kistler, Geologic and isotopic constraints on crustal structure in the northern Great Basin, Geol. Soc. Am. Bull., 102, 1077-1092, 1990.
34. Famer, G.L., and D.J. DePaolo, 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, J. Geophys. Res., 88, 3379-3401, 1983.
35. Flodin, E.A., and A.P. Barth, Paleodepth variations in a Mesozoic magmatic arc, central San Bernardino Mountains, southern California, Geol. Soc. Am Abstr. Programs 28, 39, 1996.
36. Frizzell, V.A, J.M. Mattinson, and J.C. Matti, Distinctive Triassic megaporphyritic monzogranite: Evidence for only 160 km offset along the San Andreas fault, southern California, J. Geophys. Res., 91, 14,080-14,088, 1986.
37. Gehrels, G.E., and W.R. Dickinson, Detrital zircon provenance of Cambrian to Triassic miogeoclinal and eugeoclinal strata in Nevada, Am. J. Sci., 295, 18-48, 1995
38. Gill, J.B., Geochemistry of Viti Levu, Fiji, and its evolution as an island arc, Contrib. Mineral. Petrol., 27, 179-203, 1970.
39. Gill, J.B., Orogenic Andesites and Plate Tectonics, 390 pp., Springer-Verlag, New York, 1981.
40. Gill, J.B., and P. Whelan, Early rifting of an island arc (Fiji) produced shoshonitic to tholeiitic basalts, J. Geophys. Res., 94, 4561-4578, 1989.
41. Goodge, J.W., Polyphase metamorphic evolution of a Late Triassic subduction complex, Klamath Mountains, northern California, Am. J. Sci., 289, 874-943, 1989.
42. Hacker, B.R, and J.W. Goodge, Comparison of early Mesozoic high-pressure rocks in the Klamath Mountains and Sierra Nevada, in Paleozoic and Early Mesozoic Paleogeographic Relations: Sierra Nevada, Klamath Mountains, and Related Terranes, edited by D.S. Harwood and M.M. Miller, Spec. Pap. Geol. Soc. Am. 255, 277-295, 1990.
43. Hacker, B.R, W.G. Ernst, and M.O. McWilliams, Genesis and evolution of a Permian-Jurassic magmatic arc/accretionary wedge, and reevaluation of terranes in the central Klamath Mountains, Tectonics, 12, 387-109, 1993.
44. Hamilton, W., Mesozoic California and the underflow of Pacific mantle, Geol. Soc. Am. Bull., 80, 2409-2430, 1969.
45. Harland, W.B., A.V. Cox, P.O. Llewellyn, C.A.G. Pickton, A.G. Smith, and R. Walters, A Geologic Time Scale: 131 pp., Cambridge Univ. Press, New York, 1982.
46. Harland, W.B., R.L. Armstrong, A.V. Cox, L.E Craig, A.G. Smith, and D.G. Smith, A Geologic Time Scale 1989: 263 p., Cambridge Univ. Press, New York, 1990.
47. Heamon, L., and R. Parrish, U-Pb geochronology of accessory minerals, in Applications of Radiogenic Isotope Systematics to Problems in Geology, edited by L. Heamon and J.N. Ludden, pp. 59-102, Mineral. Assoc. of Can., Victoria, British Columbia, Canada,1991.
48. Howard, K.A., J. Bachelier, T.T. Fitzgibbon, R.E Powell, and C.M Allen, Geologic map of the Valley Mountain 15-minute quadrangle, San Bernardino and Riverside Counties, California, scale 1:62,500, U.S. Geol. Surv., Washington, D.C., in press, 1996.
49. Irvine, T.N., and W.R.A. Baragar, A guide to the chemical composition of the common volcanic rocks, Can. J. Earth Sci., 8, 523-548, 1971.
50. Karish, C.R., E.L. Miller, and J.F. Sutter, Mesozoic tectonic and magmatic history of the central Mojave Desert, Am. Geol. Soc. Dig., 18, 15-32, 1987.
51. 86Sr in Mesozoic granitic rocks and intruded wall rocks in central Clifornia, Geol. Soc. Am. Bull., 84, 3489-3512, 1973.
52. Kistler, R.W., and D.C. Ross, A strontium isotopic study of plutons and associated rocks of the southern Sierra Nevada and vicinity, California: U.S. Geol. Surv. Bull., 1920, 20 pp., 1990.
53. Krogh, T.E., A low contamination method for the hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations, Geoch. Cosmoch. Acta, 37, 485-494, 1973.
54. Lange, R.A., and I.S.E. Carmichael, A potassic volcanic front in western Mexico: The lamprophyric and related lavas of San Sebastian, Geol. Soc. Am Bull., 103, 928-940, 1991.
55. Ludwig, K.R., ISOPLOT: A plotting and regression program for radiogenic-isotope data, U.S. Geol. Surv. Open File Rep. 91-445, 39 pp., 1991.
56. Martin, M.W., and J.D. Walker, Upper Precambrian to Paleozoic paleogeographic reconstruction of the Mojave Desert, California, in Paleozoic Paleogeography of the Western United States-II, edited by J.D. Cooper and CR Stevens, pp. 167-192, Pac. Sec., Soc. of Econ. Paleontol. and Mineral., Los Angeles, Calif, 1991.
57. Martin, M.W., and J.D. Walker, Extending the western North American Proterozoic and Paleozoic continental crust through the Mojave Desert, Geology, 20, 753-756, 1992.
58. Matti, J.C., H.J. Brown, F.K. Miller, C.T. Wrucke, J.P. Calzia, and CM Conway, Preliminary geologic map of the north-central San Bernardino Mountains, California, U.S. Geol. Surv. Open File Rep., 93-544, 9 pp., 1993.
59. Mattinson, J.M, Age, origin, and thermal histories of some plutonic rocks from the Saltnian Block of California, Contrib. Mineral. Petrol., 67, 233-245, 1978.
60. Mattinson, J.M, U-Pb ages of zircons: A basic examination of error propagation, Chem. Geol., 66, 151-162, 1987.
61. Miller, C.F., Alkali-rich monzonites, California: Origin of near silica-saturated alkaline rocks and their significance in a calc-alkaline balhotithic belt, Ph.D. thesis, 283 pp., Univ. of Calif, Los Angeles, 1977.
62. Miller, C.F., Monzonitic plutons, California, and a model for generation of alkali-rich, near silicasaturated magmas, Contrib. Mineral. Petrol., 67, 349-355, 1978.
63. Miller, E.L., Geology of the Victorville region, California, Geol. Soc. Am. Bull., Part II, 92, 554-608, 1981a.
64. Miller, E.L., The Sonoma orogeny in the Mojave Desert?, U.S. Geol. Surv. Open File Rep., 81-503, 776-78, 1981b.
65. Miller, E.L., and C. S. Cameron, Late Precambrian to Late Cretaceous evolution of the southwestern Mojave Desert, California, in Geology of Selected Areas in the San Bernardino Mountains, Western Mojave Desert, and Southern Great Basin, California, pp. 21-34, Death Valley Publ., Shoshone, Calif,1982.
66. Miller, F.K., and D.M Morton, Potassium-argon geochronology of the eastern Transverse Ranges and southern Mojave Desert, southern California, U.S. Geol. Surv. Prof. Pap., 1152, 30 pp., 1980.
67. Miller, J.S., and A.F. Glazner, Jurassic plutonism and crustal evolution in the central Mojave Desert, California, Contrib. Miner. Petrol., 118, 379-395, 1995.
68. Miller, J.S., A.F. Glazner, J.D. Walker, M.W. Martin, Geochronologic and isotopic evidence for Triasse - Jurasse emplacement of the eugeoclinal allochthon in the Mojave Desert region, California, Geol. Soc. Am Bull., 107, 1441-1457, 1995.
69. Miller, W.J., Geology of the western San Gabriel Mountains of California, Univ. Calif. Publ. Math. Phys. Sci., 1, 1-114, 1934.
70. Miller, W.J., Pre-Cambrian and associated rocks near Twentynine Palms, California, Geol. Soc. Am. Bull, 49, 417-446, 1938.
71. Morrison, G.W., Characteristics and tectonic setting of the shoshonite rock association, Lithos, 13, 97-108, 1980.
72. Oberlander, T.M., Morphogenesis of granitic boulder slopes in the Mojave Desert, California, J. Geol., 80, 1-19, 1972.
73. Palmer, A.R., The decade of North American geology 1983 geologic time scale, Geology, 11, 503-504, 1983.
74. Peacock, M.A., Classification of igneous rock series, J. Geol., 39, 54-67, 1931.
75. Powell, R.E, Geology of the crystalline basement complex, Eastern Transverse Ranges, southern California: Constraints on regional tectonic interpretation, Ph.D. thesis, 441 pp., Calif Inst. of Technol., Pasadena, 1981
76. Powell, R.E, and R.J. Weldon, Evolution of the San Andreas fault, Annu. Rev. Earth Planet. Sci., 20, 431-468, 1992.
77. Powell, R.E., B.F. Cox, J.C. Matti, and P.N. Gabby, Mineral resource potential of the Arroyo Seco Roadless Area, Los Angeles, County, California, Map MF-1607-A, scale 1:24,000, U.S. Geol. Surv., Reston, Va, 1983.
78. Reynolds, S.J., J.E. Spencer, and E. DeWitt, Stratigraphy and U-Th-Pb geochronology of Triassic and Jurassic rocks of west-central Arizona, Ariz. Geol. Soc. Dig., 18, 65-80, 1987.
79. Reynolds, S.J., J.E. Spencer, Y. Asmerom, E. DeWitt, and S.E Laubach, Early Mesozoic uplift in west-central Arizona and southeastern California,Geology, 17, 207-211, 1989.
80. Richmond, J.F., Geology of the San Bernardino Mountains north of Big Bear Lake, California, Spec. Rep. Calif. Div. Mines Geol. 65, 68 pp., 1960.
81. Riggs, N., J.M. Mattinson, and C.J. Busby, Correlation of Jurassic eolian strata between the magmatic arc and the Colorado Plateau: New U-Pb geochronologic data from southern Arizona, Geol. Soc. Am. Bull., 105, 1231-1246, 1993.
82. Rogers, J.J.W., Igneous and melamorphic rocks of the western portion of Joshua Tree National Monument, Riverside and San Bernardino Counties, California, Spec. Rep. Calif. Div. Mines Geol. 68, 26 pp., 1961.
83. Ross, D.C., Petrographic and chemical reconnaissance study of some granitic and gneissic rocks near the San Andreas fault from Bodega Head to Cajon Pass, California, U.S. Geol. Surv. Prof. Pap., 698, 92 pp., 1972.
84. Sadler, P.M., The Santa Ana basin of the central San Bernardino Mountains: Evidence of the timing of uplift and strike slip relative to the San Gabriel Mountains, Mem. Geol. Soc. Am. 178, 307-321, 1993.
85. Saleeby, J.B., and C. Busby-Spera, Early Mesozoic tectonic evolution of the western U.S. Cordillera, in The Cordileran Orogen: Conterminous U.S., edited by B.C. Burchfiel, P. W. Lipman, and M.L. Zoback, pp. 107-168, Geol. Soc. of Am., Boulder, Colo., 1992.
86. Saul, R.B., Geology of the west central part of the Mt. Wilson 7 1/2" quadrangle, San Gabriel Mountains, Los Angeles County, California, Map Sheet 28, scale 1:24,000, Calif. Div. of Mines and Geol., Sacramento, Calif, 1976.
87. Schermer, E.R., Mesozoic structural evolution of the west-central Mojave Desert, in Mesozoic Paleogeography of the Western United States-II, edited by G. Dunne and K. McDougall, pp. 307-322, Pac. Sec., Soc. of Econ. Paleontol. and Miner., Los Angeles, Calif, 1993.
88. Schermer, E.R., and C. Busby, Jurassic magmatism in the central Mojave Desert: Implications for arc paleogeography and preservation of continental volcanic sequences, Geol. Soc. Am. Bull., 106, 767-790, 1994.
89. Schweickert, R.A., and M.M. Lahren, Speculative reconstruction of a major Early Cretaceous(?) dextral fault zone in the Sierra Nevada: Implications for Paleozoic and Mesozoic orogenesis in the western United States, Tectonics, 9, 1609-1629, 1990.
90. Schweickert, R.A, and M.M. Lahren, Triassic-Jurassic magmatic arc in eastern California and western Nevada: Arc evolution, cryptic tectonic breaks, and significance of the Mojave-Snow Lake fault, in Mesozoic Paleogeography of the Western United States-II, edited by G. Dunne and K. McDougall, pp. 227-246, Pac. Sec., Soc. of Econ. Paleontol. and Miner., Los Angeles, Calif. 1993.
91. Schweickert, R.A, M.M. Lahren, and J.D. Walker, New age and structural constraints on volcanism, thrusting, and penetrative deformation of rocks in addlebag Lake pendant, Yosemite National Park, California, Geol. Soc. Am. Abstr. Programs, 26, 89, 1994.
92. Sharp, W.D., Pre-Cretaceous crustal evolution in the Sierra Nevada region, California, in Metamorphism and Crustal Evolution of the Western United States, edited by W.G. Ernst, pp. 823-864, Prentice-Hall, Englewood Cliffs, N.J., 1988.
93. Smith, D.P., Geology of the north half of the Pasadena quadrangle, Los Angeles County, California, Open File Rep. Calif. Div. Mines Geol. 86-4, 40 pp., 1986.
94. Speed, R.C., Collided Paleozoic microplate in the western United States, J. Geol., 87, 279-292, 1979.
95. Stem, C.R., S.H. Bloomer, P. Lin, E. Ito, and J. Morris, Shoshonitic magmas in nascent arcs: New evidence from submarine volcanoes in the northern Marianas, Geology, 16, 426-430, 1988.
96. Stem, T.W., P.C. Bateman, B.A. Morgan, M.F. Newell, and D.L. Peck, Isotopic U-Pb ages of zircon from the granitoids of the central Sierra Nevada, California, U.S. Geol. Surv. Prof. Pap. 1185, 17 pp., 1981.
97. Stevens, C.H., Permian depositional processes and tectonics, western United States, in Paleozoic Paleogeography of the Western United States, edited by J.R Stewart, C.H. Stevens, and A.E. Fritsche, pp. 113-132, Pac. Sec., Soc. of Econ. Paleontol. and Miner., Los Angeles, Calif, 1977.
98. Stevens, C.H., and P. Stone, Early Permian thrust faults in east-central California, Geol. Soc. Am. Bull., 100, 552-562, 1988.
99. Stewart, J.H., and F.G. Poole, Extension of the Cordilleran miogeoclinal belt to the San Andreas fault, southern California, Geol. Soc. Am. Bull., 86, 205-212, 1975.
100. Stewart, J.H., F.G. Poole, and R.F. Wilson, Stratigraphy and origin of the Chink Formation and related upper Triassic strata in the Colorado Plateau region: U.S. Geol. Surv. Prof Pap. 690, 336 pp., 1972.
101. Stewart, J.H., T.H. Anderson, G.B. Haxel, L.T. Silver, and J.E. Wright, Late Triassic paleogeography of the southern Cordillera: The problem of the source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region, Geology, 14, 567-570, 1986.
102. Tosdal, R.M., Mesozoic rock units along the Mule Mountains thrust system, southeastern California and southwestern Arizona, Ph.D. thesis, 365 pp., Univ. of Calif, Santa Barbara, 1988.
103. Tosdal, R.M, G.B. Haxel, and J.E Wright, Jurassic geology of the Sonoran Desert region, southern Arizona, southeast California, and northernmost Sonora: Construction of a continental margin magmatic arc, Ariz. Geol. Soc. Dig., 17, 397-434, 1989.
104. Walker, J.D., Permian to Middle Triassic rocks of the Mojave Desert, Ariz. Geol. Soc. Dig., 19, 1-14, 1987.
105. Walker, J.D., Permian and Triassic rocks of the Mojave Desert and their implications for timing and mechanisms of continental trunccation, Tectonics, 7, 685-709, 1988.
106. Walker, J.D., M.W. Martin, J.M. Bartley, and D.S Coleman, Timing and kinematics of deformation in the Cronese Hills, California, and implications for Mesozoic structure of the southern Cordillera, Geology, 18, 554-557, 1990.
107. Walker, J.D., and B.R. Wardlaw, Implicatiom of Paleozoic and Mesozoic rocks in the Sodi Mountains, northeastern Mojave Desert, California, for late Paleozoic and Meaozoic Cordilleran orogenesis, Geol. Soc Am. Bull. 101, 1574-1583, 1989.
108. Wright, J.E, Permo-Triassic accretionary subduction complex, southwestern Klamath Mountains, northern California, J. Geophys. Res., 87, 3805-3818, 1982.
109. Wooden, J.L., and R.M Tosdal, Common Pb isotopic evidence for sources of Mesozoic and Tertiary magmatism in SE Calif and SW Ariz., Geol. Soc. Am. Abstr. Program, 22, 95, 1990.
110. Wright, J.E., and J.L. Wooden, New Sr, Nd, and Pb isotopic data from plutons in the northern Great Basin: Implications for crustal structure and granite petrogenesis in the hinterland of the Sevier thrust belt, Geology, 19, 457-460, 1991.