Papers by Franco Tortello
SEDIMENTOLOGY AND PALEOENVIRONMENT OF THE SANTA ROSITA FORMATION (LATE FURONGIAN-TREMADOCIAN) IN ... more SEDIMENTOLOGY AND PALEOENVIRONMENT OF THE SANTA ROSITA FORMATION (LATE FURONGIAN-TREMADOCIAN) IN THE NAZARENO AREA, CORDILLERA ORIENTAL, SALTA PROVINCE, ARGENTINA. The sedimentology of the Santa Rosita Formation (late Furongian-Tremadocian) in the Nazareno area, Cordillera Oriental, Salta Province, is studied herein. In this locality, a 650m thick succession is assignable to the upper part of the formation, and consists of a lower part dominated by sandstones and an upper part characterized mainly by shales. The studied section includes several sedimentary facies (A: Laminated and massive black shale; B: Green and dark gray siltstones with intercalations of thin sandstone beds; C: Massive mudstone with intercalated combined-flow rippled sandstone; D: Interbedded hummocky cross-stratified sandstone and mudstone; E: Amalgamated sandstone with hummocky cross-stratification overlapping), which characterize different open marine environments dominated by storms. The succession evolves fr...
Graptolites and trilobites from the Eusebio Ayala Formation (Hirnantian?-early Llandovery), Paraná Basin, eastern Paraguay
Geological Journal, 2013
Fil: Alfaro, Marta Beatriz. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Mu... more Fil: Alfaro, Marta Beatriz. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Revue de Paléobiologie, 2012
Early Silurian trilobites and graptolites from the Vargas Peña Formation of the western Paraná Ba... more Early Silurian trilobites and graptolites from the Vargas Peña Formation of the western Paraná Basin are described. The studied material comes from two successions (San Fernando and Galeano quarries) on the southwestern flank of the Ypacaraí graben, about 30 km southeast of Asunción city, eastern Paraguay. The faunas include Calymene boettneri Harrington, C. harringtoni tortello sp. nov., Trimerus sp., Dalmanites ypacarayensis (BalDis & Hansen), Dalmanites sp., Guaranites paraguayensis BalDis & Hansen,
Uploads
Papers by Franco Tortello