The North-Chilean Coast Range — an example for the development of an active continental margin
Tóm tắt
Analysis of extended plutons in the Coast Range of North Chile between 25°30′ and 26°35′ led to the recognition of a complex magmatic and structural evolution from the Upper Paleozoic to the Tertiary. The ascension of the intrusive bodies is dictated by deep-seated block tectonics. Generally the chemistry changes from S-type magmas in the Paleozoic to I-type magmas in the Mesozoic and Cainozoic. This is accompanied by a change in the structural geology of the continental margin which we present in six hypothetic phases (Devonian-Tertiary). We are only at the beginning of an encompassing synthesis of the genesis of the Andean orogen.
Tài liệu tham khảo
Arabasz, W. J.: Geological and geophysical studies of the Atacama fault zone in northern Chile. - Diss. Calif. Inst. Techn. Passadena, Calif., 264 pp, 1971.
Berg, K. &Breitkreuz, C.: Mesozoische Plutone in der nordchilenischen Küstenkordillere: Petrogenese, Geochronologie, Geochemie und Geodynamik mantelbetonter Magmatite. - Geotekt. Forsch.66, 107 pp, 1983.
Chappell, B. W., &White, A. J. R.: Two contrasting granite types. - Pacific Geol.,8, 173–174, 1974.
Cobbing, E. J. &Pitcher, W. S.: The coastal batholith of central Peru. - J. geol. Soc. London,128, 421–460, 1972.
Cobbing, E. J.,Pitcher, W. S.,Wilson, J. J.,Baldock, J. W.,Taylor, W. P.,McCourt, W. &Snelling, N. J.: The geology of the western Cordillera of northern Peru. - Overseas Mem. Inst. geol. Sci.,5, 143 pp, 1981.
Damm, K.-W. &Pichowiak, S.: Geodynamik und Magmengenese in der Küstenkordillere Nordchiles zwischen Taltal und Chañaral. - Geotekt. Forsch.,61, 166 pp, 1981 a.
&Pichowiak, S.: Petrologie, Geochronologie und Geochemie der Magmatite im Kü stenkordillerensegment Taltal-Chañaral (Nordchile). - Zentralbl. Geol. Paläont.1, 3/4, 319–332, 1981 b.
Damm, K.-W., Pichowiak, S. &Zeil, W.: The plutonism in the North Chilean coast-range and its geodynamic significance. - Geol. Rundsch.,70, 3, 1054–1076, 1981.
Evensen, N. M., Hamilton, P. J. &O'Nions, R. K.: Rare earth abundances in chondritic meteorites. - Geochim. Cosmochim. Acta,42, 1119–1212, 1978.
Hamilton, W.: Tectonics of the Indonesian Region. - Prof. Pap. U.S. geol. Surv.,1078, 345 pp, 1979.
v.Hillebrandt, A.: Neue Ergebnisse über den Jura in Chile und Argentinien. - Münster. Forsch. Geol. Paläont.,31/32, 167–199, 1973.
Jurgan, H.: Strukturelle und lithofazielle Entwicklung des andinen Unterkreide-Beckens im Norden Chiles (Provinz Atacama). - Geotekt. Forsch.,52, 133 pp, 1977.
Levi, B. &Aguirre, L.: Ensialic spreading — subsidence in the mesozoic and paleogene Andes of central Chile. - J. geol. Soc. London,138, 75–81, 1981.
Mercado, W. M.: Carta geológica de Chile, Cordillera de la Costa entre Chañaral y Caldera, 1∶100 000. - Inst. Inv. Geol. (IIG), No. 27, 1978.
Miller, H.: Vergleichende Studien an prämesozoischen Gesteinen Chiles unter besonderer Berücksichtigung ihrer Kleintektonik. - Geotekt. Forsch.,36, 64 pp, 1970.
Nakamura, N.: Determination of REE, BA, Fe, Mg, Na, and K in carbonaceous and ordinary chondrites. - Geochim. Cosmochim. Acta,38, 757–775, 1974.
Naranjo, J. A.: Geología de la zona interior de la Cordillera de la Costa entre los 26°00′ y 26°20′ S, 1∶ 100 000. - Inst. Inv. Geol. (IIG), No. 34, 1978.
Okada, A.: On the neotectonics of the Atacama fault zone region — Preliminary notes on late Cenozoic faulting and geomorphic development of the coast range of northern Chile. - Bull. Dep. Geogr. Univ. Tokyo,3, 47–65, 1971.
Palacios, M. C.: The Jurassic paleovolcanism in northern Chile. - Diss. FB Geowiss. Univ. Tübingen, 97 pp, 1978.
Pitcher, W. S.: The nature, ascent and emplacement of granitic magmas. - J. geol. Soc. London,136, 627–662, 1979.
St. Amand, P. &Allen, C. R.: Strike-slip faulting in northern Chile (abstr.). - Bull. geol. Soc. Amer.,71, p. 1965, 1960.
Streckeisen, A.: To each plutonic rock its proper name. - Earth Sci. Rev.,12, 1–33, 1976.
Zeil, W.: The Andes — A geological review. - 260 pp., Berlin-Stuttgart (Borntraeger), 1979.
: Vulkanismus und Geodynamik an der Wende Paläozoikum/Mesozoikum in den zentralen und südlichen Anden (Chile-Argentinien). - Zbl. Geol. Paläont.1, 3/4, 298–318, 1981.