Cretaceous tectonic evolution of coastal southern California: Insights from the Catalina Schist

Tectonics - Tập 14 Số 6 - Trang 1290-1308 - 1995
Marty Grove, Gray E. Bebout

Tóm tắt

The relatively high‐T, high‐P/T, subduction‐related basement in the Southern California Continental Borderland preserves important information regarding the late Mesozoic tectonic evolution of coastal southern California. Integrated petrologic, geochemical, and geochronological study of the subduction‐related Catalina Schist exposed on Santa Catalina Island documents the formation of lawsonite‐blueschist through amphibolite facies rocks during progressive underplating in a progressively cooling, newly initiated subduction zone. Petrologic and 40Ar/39Ar thermochronologic data demonstrate similar, perhaps shared, retrograde PT histories for all but the lawsonite‐albite facies rocks under pumpellyite‐actinolite facies conditions as early as ∼95–100 Ma. The 40Ar/39Ar data, together with the abundance of pumpellyite‐actinolite facies vein assemblages and lack of higher‐P/T (epidote‐ or lawsonite‐blueschist) over‐printing in high‐grade units, are consistent with the rapid emplacement of the Catalina Schist into the shallow‐ to mid‐crust by ∼ 95 Ma by combined underplating and tectonic/erosional removal of overlying rocks in the accretionary complex (cf. Platt, 1986). The Catalina Schist and the adjacent Peninsular Ranges Batholith potentially represent paired metamorphic belts formed along southwest North America at 120 to 90 Ma. Combining the evidence for the evolution of the Catalina Schist with the previously advanced hypotheses regarding tectonic evolution of the batholith, suturing of a fringing island arc to the continent may have triggered an oceanward trench stepout and the formation of a new subduction zone, at ∼ 120–115 Ma, in which the Catalina Schist was accreted and metamorphosed.

Từ khóa


Tài liệu tham khảo

10.1086/649739

Bailey E. H. Mineralogy petrology and geology of Santa Catalina Island California Ph.D. thesis 193 pp. Stanford Univ. Stanford Calif. 1941.

Bailey E. H., 1964, Franciscan and related rocks, Bull. Calif. Div. Mines Geol., 183

10.1086/629291

10.1130/0016-7606(1992)104<0018:TPTTHO>2.3.CO;2

10.1007/BF00306534

Barton M. D., 1987, Isotopic constraints on the geochemical evolution of an ultramafic subduction zone melange: Catalina Schist Terrane, California (abstract), Eos, Trans. AGU, 68, 1525

Barton M. D., 1988, Metamorphism and Crustal Evolution of the Western United States, 110

Bebout G. E. Geological and geochemical investigations of fluid flow and mass transfer during subduction‐zone metamorphism Ph.D. thesis 370 pp. Univ. of Calif. Los Angeles 1989.

10.1126/science.251.4992.413

10.1029/91GL00949

Bebout G. E., 1988, Field evidence for partial melting of sediment and oceanic crust in a subduction complex: Catalina Schist Terrane, California, Eos, Trans. AGU, 69, 505

10.1130/0091-7613(1989)017<0976:FFAMIA>2.3.CO;2

10.1016/0009-2541(93)90318-D

Blake M. C. R. N.Brothers M. A.Lanphere Upside‐down metamorphic zonations blueschist facies along a regional thrust in California and OregonU.S. Geol. Surv. Prof. Pap. 575‐C 1–9 1967.

10.1007/BF00371130

10.1029/JB091iB11p11557

Christoffel C. A. Investigation of Low‐Grade High‐P/T Metamorphism in the Catalina Schist—Tectonic Implications Senior thesis 43 pp. Lehigh Univ. Bethlehem Penn. 1994.

10.1029/TC004i005p00421

10.1007/BF00874549

10.1130/0016-7606(1971)82[2397:DAAOHB]2.0.CO;2

Coombs D. S., 1960, Lower grade mineral facies in New Zealand, Rep. Int. Geol. Congr. 21st Session, Norden, 1960, 13, 339

10.1130/0016-7606(1979)90<338:NTEOTC>2.0.CO;2

10.1130/0016-7606(1993)105<1415:LCTEOT>2.3.CO;2

Debiche M. G. A.Cox D. C.Engebretson The motions of allochthonous terranes across the North Pacific Basin Spec. Pap. Geol. Soc. Am. 207 59 1987.

10.1016/0012-821X(79)90172-9

10.1007/BF00373790

10.1086/628625

10.1029/90JB01913

Dunlap W. J., 1994, 40Ar/39Ar dating of experimentally deformed white mica, Geol. Soc. Am. Abstr. Progr., 26, 528

Engebretson D. C. A.Cox R. G.Gordon Relative motions between oceanic and continental plates in the Pacific Basin Spec. Pap. Geol. Soc. Am. 206 59 1985.

10.1130/0016-7606(1965)76[879:MPIFMR]2.0.CO;2

10.2475/ajs.270.2.81

10.1130/0091-7613(1984)12<436:CBSATS>2.0.CO;2

10.1130/0091-7613(1988)016<1081:THOSZI>2.3.CO;2

Ernst W. G. Y.Seki H.Onuki M. C.Gilbert Comparative study of low‐grade metamorphism in the California Coast Ranges and the Outer Metamorphic Belt of Japan Spec. Pap. Geol. Soc. Am. Bull. 124 276 1970.

10.1016/0024-4937(90)90003-J

10.1098/rsta.1984.0017

Forman J. A. Age of the Catalina Island Pluton Spec. Pap. Geol. Soc. Am. 124 37–45 1970.

10.1111/j.1525-1314.1991.tb00542.x

Gastil R. G., 1981, The Geotectonic Development of California, 284

10.1130/MEM174-p19

10.1093/petrology/28.1.75

Grove M. Thermal histories of southern California basement terranes Ph.D. thesis 307 pp. Univ. of Calif. Los Angeles 1993.

10.1029/90TC02779

10.1130/0016-7606(1985)96<1077:MPANTO>2.0.CO;2

10.1007/BF00398927

Hess J. C., 1987, Interpretation of 40Ar/39Ar apectra of biotites: Evidence from hydrothermal degassing experiments and TEM studies, Chem. Geol., 66, 137

Hill D. J., 1976, Aspects of the geologic history of the California Continental Borderland, 16

Howell D. G., 1981, The Geotectonic Development of California, 535

Howell D. G., 1987, Cenozoic Basin Development of Coastal California, 242

10.1007/BF00572159

Kennedy M. P. G. H.Greene S. H.Clarke Geology of the California Continental Margin: Explanation of the California Continental Margin Bull. Calif. Div. Mines Geol. Map Ser. 207 72 1987.

Kimbrough D. L., 1985, Tectonostratigraphic Terranes of the Circum‐Pacific Region, 285

10.1111/j.1525-1314.1994.tb00008.x

Liou J. G., 1987, Low Temperature Metamorphism, 59

10.1016/0098-3004(92)90025-M

10.1111/j.1525-1314.1987.tb00400.x

Martinson J. M., 1982, U‐Pb "blocking temperatures" and Pb‐loss characteristics in young zircon, sphene, and apatite, Geol. Soc. Am. Abstr. Progr., 14, 588

10.1130/MEM164-p95

Mattinson J. M., 1988, Metamorphism and Crustal Evolution of the Western United States, 1023

Mattinson J. M., 1976, Aspects of the geologic history of the California Continental Borderland, 53

10.1130/0016-7606(1984)95<1373:GSAOOT>2.0.CO;2

10.1029/JB095iB04p04833

10.1016/0012-821X(94)00253-U

10.1093/petrology/25.1.126

10.1029/90JB02237

10.1515/9781501508936-006

10.1130/0016-7606(1970)81[1665:TSOIA]2.0.CO;2

Oxburgh E. R., 1974, Thermal gradients and regional metamorphism in overthrust terrains with special reference to the eastern Alps, Schweiz. Mineral. Petrogr. Mitt., 54, 641

10.1029/JB092iB12p12763

10.1126/science.248.4953.329

10.1029/92JB01768

10.1130/0016-7606(1975)86<1337:MADPIT>2.0.CO;2

Platt J. P. The petrology structure and geologic history of the Catalina Schist terrain southern California Univ. Calif. Publ. Geol. Sci. 112 111 1976.

10.1130/0016-7606(1986)97<1037:DOOWAT>2.0.CO;2

Robbins G. A. Radiogenic argon diffusion in muscovite under hydrothermal conditions M.S. thesis 38 pp. Brown Univ. Providence R. I. 1972.

10.1007/BF00373587

10.1029/92JB01954

10.1130/0091-7613(1988)016<0623:TSOBAI>2.3.CO;2

Sedlock R. L. F.Ortega‐Gutierrez R. C.Speed Tectonostratigraphic terranes and tectonic evolution of Mexico Spec. Pap. Geol. Soc. Amer. 278 153 1993.

10.1017/S0263593300014152

Sorensen S. S. Petrology of basement rocks of the California Continental Borderland and the Los Angeles Basin Ph.D. thesis 423 pp. Univ. of California Los Angeles Calif. 1984.

10.1130/0016-7606(1985)96<997:PEFJIB>2.0.CO;2

10.1130/MEM164-p59

Sorensen S. S., 1988, Metamorphism and Crustal Evolution of the Western United States, 998

10.1111/j.1525-1314.1988.tb00431.x

10.1130/0091-7613(1987)15<115:MAPMIA>2.0.CO;2

Stuart J. C., 1979, Cenozoic Paleogeography of the Western United States, Pac. Sect. Soc. Econ. Paleontol. Mineral. Symp, 29

10.2475/ajs.272.3.217

Suppe J., 1978, Mesozoic Paleogeography of the Western United States, Pac. Sect., Soc. Econ. Paleontol. Mineral. Symp, 431

10.1515/9781501508936-014

Tenore‐Nortrup J., 1993, Metasomatism of gabbroic and dioritic cobbles in blueschist facies metaconglomerates: sources and sinks for high‐P/T metamorphic fluids, Eos, Trans. AGU, 16, 331

Todd V. R., 1988, Metamorphism and Crustal Evolution of the Western United States, Rubey, 894

10.1029/TC006i004p00377

Vedder J. G., 1987, Geology and Resource Potential of the Continental Margin of Western North America and Adjacent Ocean Basins‐Beaufort Sea to Baja California, Earth Sci. Ser, 403

10.1086/629569

Walawender M. J., 1991, Geological Excursions in Southern California and Mexico, Guidebook, 1991, Geol. Soc. of Am. Ann. Meet, 297

10.1016/0016-7037(74)90120-3

Woodford A. O., 1924, The Catalina metamorphic facies of the Franciscan series: Berkeley, California, Calif. Univ. Publ. Geol. Sci., 15, 49

10.1130/0016-7606(1974)85<293:PFASCA>2.0.CO;2

Thông tin
Thông tin xuất bản

Tectonics

Tập 14 Số 6

1290-1308

Thông tin tác giả