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Publications 1998
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• Brussa, E.D. & Astini, R.A., 1998. The Gualcamayo River section: a graptolite constrained K-bentonite succession in the Ordovician of the Argentine Precordillera. In: Gutierrez-Marco, J.C. & I.
• Rabano (Eds.), Proceedings 6th International Graptolite Conference & Field Meeting, IUGS Subcommission on Silurian Stratigraphy. Temas Geológico-Mineros ITGE vol. 23: 154-157. Madrid.
• Mitchell, C., Brussa, E.D. & Astini, R.A., 1998. A deiverse Da2 fauna preserved within an altered volcanic ash fall, Eastern Precordillera, Argentina: implications for graptolite paleoecology. In:
• Gutierrez-Marco, J.C. & I. Rabano (Eds.), Proceedings 6th International Graptolite Conference & Field Meeting, IUGS Subcommission on Silurian Stratigraphy. Temas Geológico-Mineros ITGE vol. 23: 222-223. Madrid.
• Brussa, E.D., Mitchell, C. & Astini, R.A., 1998. Late Yapeenian to Early Darriwillian graptolite faunas from Nazareno Creek, Guandacol region, Precordillera, Argentina. In: Gutierrez-Marco, J.C. & I. Rabano (Eds.), Proceedings 6th International Graptolite Conference & Field Meeting, IUGS Subcommission on Silurian Stratigraphy. Temas Geológico-Mineros ITGE vol. 23:158-160. Madrid.
• Mitchell, C., Brussa, E.D., Toro, B.A. & Astini R.A., 1998. Late Ordovician graptolites from the Empozada Formation, Argentine Precordillera, an outer shelf, cool water, peri-Gondwanan assemblage? In: Gutierrez-Marco, J.C. & I. Rabano (Eds.), Proceedings 6th International Graptolite Conference & Field Meeting, IUGS Subcommission on Silurian Stratigraphy. Temas Geológico-Mineros ITGE vol. 23: 224-226. Madrid.
• Carrera, M.G. y Astini, R.A., 1998. Valoración de las restricciones ambientales durante la transición arenigiano-llanvirniano en el Ordovícico de la Precordillera Argentina. Revista de la Asociación Geologica Argentina, 53(1): 41-56.
• Dalziel, I.W.D. & Astini, R.A., 1998. Early Paleozoic paleogeography of laurentia and western Gondwana: Evidence from tectonic subsidence analysis: Comment and Reply, Geology. 26(6): 575-576.
• Astini, R.A., 1998. Stratigraphic evidence supporting the rifting, drifting and collision of the Laurentian Precordillera terrane of western Argentina. In: Pankhurst, R.J. & Rapela, C.W. (Eds.), The Proto-Andean margin of Gondwana. Geological Society of London Special Publication. 142: 11-33.
• Huff, W.D., Bergstrom, S.M., Kolata D.R., Cingolani, C. & Astini, R.A., 1998. Ordovician K-bentonites in the Argentine Precordillera: relations to gondwana margin evolution. In: Pankhurst, R.J. & Rapela, C.W. (Eds.), The Proto-Andean margin of Gondwana. Geological Society of London Special Publication, 142: 107-126.
• Bergstöm, S.M., Astini, R.A., Huff W.D., Cingolani C., Brussa, E.D. & Kolata, D.R., 1998. The K-bentonite bed succession at Rio Gualcamayo in the Guandacol region, northern argentine Precordillera:
The most extensive ordovician volcanic ash bed complex exposed anywhere in the world? IX Congreso Latinoamericano de Geología, II: 439-444. Buenos Aires.
• Astini, R.A., 1998. El Conglomerado de Las Vacas y el Grupo Trapiche de la Precordillera: tectónica distensiva en el Ordovícico Superior. Revista de la Asociación Geológica Argentina, 53 (4): 489-503.
• Astini, R.A., 1998. El Ordovícico en la región central del Famatina (provincia de La Rioja, Argentina): aspectos estratigráficos, geológicos y geotectónicos. Revista de la Asociación Geológica Argentina, 53(4): 445-460.
• Rapalini, A.E & Astini, R.A., 1998. Paleomagnetic confirmation of the allochthony of the Argentine Precordillera. Earth and Planetary Science Letters, 155, pag. 1-14. |
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