Remarks on the stratigraphy and biochronology of the Late Pleistocene deposit of Ingarano (original) (raw)
Related papers
GR, 2002
Sedimentological, palaeontological and geological data from the glacial to postglacial transition in the late Paleozoic successions of the Paganzo-Calingasta Basin (PC) in southern South America and the Great Karoo-Kalahari Basin (GKK) in southern Africa are analysed, revised and reinterpreted. A brackish depositional setting is inferred for main areas previously considered to be nonmarine based upon ichnological interpretations. Three stratigraphic intervals have been defined based on changes in sedimentary facies and trace fossils association: The glacial interval (GI), early postglacial interval (EPI) and late postglacial interval (LPI). The GI and EPI contain a dominance of arthropod trackways, fish trails with and subordinate grazing and feeding traces. The EPI in the PC Basin comprises both nonmarine and brackishmarine ichnocoenoses without significant differences in ichnological composition. >ace fossils are preserved in underflow and turbidite beds of deltaic deposits. Opportunistic grazing traces constitute a post-event ichnocoenosis, while a preevent ichnocoenosis is preserved at the base of turbidite beds. In the GKK Basin ichnofossils were documented in turbidite fans. The LPI in the GKK Basin contains the first evidence of shallow water deltaic infauna and subordinate grazing traces. Conversely, in the PC Basin the infauna is lacking.
group, 2007
Ichnology has been only recently reappraised as a good tool for palaeoecological and palaeoenvironmental interpretations, although still few and partial data are nowadays available about tracemakers and their ethology. For these reasons detailed analyses focusing on the characterization of ichnofossil assemblages distributed within different deposits are indispensable. In turbidite and hemipelagite sediments of the Northern Apennines (Italy), early Eocene to late Miocene in age, 317 samples have been investigated, focusing on stratinomy and abundance in depositional units ("scisti varicolori", Scaglia, Bisciaro, "marnoso arenacea", Macigno and Arenarie di Monte Cervarola formations). This study points out the poorly known or undescribed trace fossils from this area and exhibits preliminary results about the relationships between infauna and sedimentation. Stratinomy allowed to recognize five types of trace fossil distributions, each taking account on burrow stratinomic value that reflects their position in the event bed: hypichnia (base of bed), endichnia (inside bed), epichnia (top of bed), exichnia (outside bed) and crossichnia (crossing event bed an overlying and/or underlying marly/silty beds). This work represents the base for further analyses that will focus mainly on the understanding of the relationship between burrow assemblages and sediment characteristics in foredeep basins.
Paleoceanogr. conditions Quaternary sites 975 and 976. In Procedings ODP Sc. Results
Proceedings of the Ocean Drilling Program, Scientific Results, 161, 1999
The assemblages of planktonic foraminifers at Sites 975 and 976 were studied quantitatively. The variations in the relative abundances of the species enabled us to identify four intervals during the Pleistocene. In Interval 1, there are frequent levels with high proportions of N. pachyderma (left-coiling) and very abundant G. inflata. In Interval 2, N. pachyderma (left-coiling) is virtually absent. Interval 3 consists of a long period with the frequent occurrence of N. pachyderma (left-coiling). Interval 4, covering the upper part of the Pleistocene, is dominated by N. pachyderma (right-coiling). In this interval, a first peak of N. pachyderma (left-coiling) was detected at both sites, together with a second, younger, peak at Site 976 only. A Q-mode principal-component analysis showed that the first five principal components (97.7% of the variance) are dominated by N. pachyderma (right-coiling), G. inflata, N. pachyderma (left-coiling), G. ruber, and G. bulloides, respectively. The modern analogs of the Quaternary samples were identified in a core-top data set, divided into groups by k-means clustering procedure. A discriminant analysis was used (to include each Quaternary sample in a present-day group) followed by calculating the similarity (cosine of the angle between vectors) between each down-core sample and the core-top samples of its group. On the whole, the results suggest that paleoceanographic conditions in the western Mediterranean during the Quaternary were equivalent to those currently prevailing between the parallels of North Cape and the Canary Islands. During the first Pleistocene interval, predominant conditions were similar to present-day ones, (although a little warmer at Menorca Rise), but were interrupted by very cold episodes. During Interval 2, the conditions were generally colder, but more stable, with no very cold episodes. Interval 3 had similar conditions to the first interval, although there was a higher incidence of the very cold episodes. Finally, Interval 4 is characterized by conditions similar to those of the second interval, although somewhat more regular and a little cooler.
Val Sorda: An upper Pleistocene loess-paleosol sequence in northeastern Italy
2004
La secuencia de paleosuelo de loess del Pleistoceno superior de Val Sorda (Noreste de Italia) ha sido investigada utilizando métodos paleopedológicos, micromorfológicos y mineralógicos. Se ha puesto especial énfasis en parámetros magnéticos y análisis de minerales arcillosos. La base de la secuencia es un paleosuelo del Eemiano, que consiste en un horizonte Bt rubificado formado a partir de till. Este horizonte Bt está cubierto por loess, tres paleosuelos interestadiales y depósitos coluviales. Los tres paleosuelos interestadiales tienen una morfología de Chernozem y características que reflejan un paleoclima seco y de tipo continental. La cima de la secuencia está cubierta por till depositado durante el avance glacial de la etapa Solferino.
Quaternary International, 2005
The archaeological deposits of Isernia la Pineta are a milestone in the European context, being composed of very rich and largesized occupation layers. The archaeological remains are characterised by the use of anvils in a very opportunistic and rapid way to produce a large number of flakes and residual cores, usually of very small size. The lithic instruments are associated with remains of large mammals, which give a clear indication of the diet. They are represented by Bison schoetensacki Freudenberg, Stephanorhinus hundsheimensis Toula, Elephas (Palaeoloxodon) namadicus Falconer e Cautley, Ursus deningeri von Reichenau, Hippopotamus cf. antiquus Desmarest, Sus scrofa L., Hemitragus cf. bonali Harle`e Stehlin, Megaceroides solilhacus Robert, Cervus elaphus cf. acoronatus Beninde, Dama dama cf. clactoniana Falconer, Capreolus sp., and Panthera leo fossilis von Reichenau. The rodent fauna is represented by Clethrionomys sp., Pliomys episcopalis Me`hely, Pliomys lenki Heller, Microtus aff. arvalis Pallas, Microtus brecciensis Gieber, Microtus (Terricola) gr. multiplex-subterraneus, and Arvicola cantiana Hinton. The insectivores are Talpa sp., Sorex cf. runtonensis Hinton, and Crocidura sp.