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| Registros recuperados: 21 | |
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| RECABARREN,OMAR P; PINO,MARIO; CID,INÉS. |
| Fourteen dental and bone parts of a horse excavated from the Pilauco paleontological site, Osorno (40°39' S-73°07' W) are analysed and interpreted. This site was formed in association with a peat bog located on the banks of the old Damas River and has conserved abundant late Pleistocene mammalian fauna and flora materials. A date of 11457 ± 140 14C yrs B.P. was obtained from a molar and agrees with our stratigraphic age model. We have identified the fossils as pertaining to the species Equus (Amerhippus) andium, which confirms its presence in central-south Chile. Furthermore, the recorded geographic location indicate that the metapodial adaptations of the specimens previously described agree with the reconstructed late Pleistocene landscape of Pilauco,... |
| Tipo: Journal article |
Palavras-chave: Equus; Equus (Amerhippus) andium; Late Pleistocene; Pilauco. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000400006 |
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| Freitas,Aline Gonçalves de; Carvalho,Marcelo de Araujo; Toledo,Mauro Bevilacqua de; Mendonça,Claudia Barbieri Ferreira; Gonçalves-Esteves,Vania. |
| This paper presents morphological descriptions and ecological data of cryptogam spores and other non-pollen palynomorphs from Quaternary sediments of Campos Basin, Rio de Janeiro, SE Brazil. The ages were derived from biostratigraphy of planktonic foraminifers and two radiocarbon dates, and suggest that sediment deposition started in the last 140,000 years BP. Thirty different types of palynomorphs were identified, described, and photographed: two bryophyte spores (sensu lato); 21 pteridophyte spores; four freshwater microalgae; onePseudoschizaea; and two microfungi. Some of the identified spores (Sphagnum, Blechnum, Cyatheaceae, Dennstaedtiaceae, Lycopodiella, Microgramma, Polypodium, Acrostichum, Pityrogramma, and Lygodium) are related to the modern... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campos Basin; Late Pleistocene; Non-pollen palynomorphs; Paleoecology; Spores. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200161 |
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| Hussein,Kamal M.. |
| The goal of this research was to reconstruct the vegetational and climatic changes that took place during the late Pleisocene and Holocene in southwestern Syria. This reconstruction was based on palynological data obtained from the analysis of 27 sediments and surface samples (with a total thickness of 4.55 m) collected from Al-Hijaneh Lake basin (late Pleistocene) and from Al-Aouaj River valley (Holocene). Three pollen zones were established. The oldest one (zone A) corresponds to the late Pleistocene lacustrine deposits of Lake Al-Hijaneh. Zones B and C were defined in the Holocene fluvial- lacustrine deposits of the Al-Aouaj River valley. These three pollen assemblage zones are correlated to synchronic and similar C14 dated pollen zones from Syria,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flora; Holocene; Late Pleistocene; Paleoclimates; Palynology; Syria. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932006000200003 |
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| Aoki, Kaori. |
| A tephra layer with normal grading in the sub‐bottom depth interval 119–122 cm in marine core SO202‐27‐6 was collected on Patton Seamount in the northeast North Pacific Ocean. Based on the geochemistry of volcanic glass shards determined by a wavelength dispersive electron probe micro‐analyser and an X‐ray fluorescence analyser, this layer is correlated to the Dawson tephra, a widespread late Pleistocene time marker tephra in Alaska and the Yukon. The age of the Dawson tephra in the core is 29.03 ± 0.178 ka (1 sigma) based on a published age model. The Dawson tephra is revealed to have been deposited in the transition from marine isotope stage 3 to 2, i.e. the last stage of Heinrich Stadial 3 derived from the ice‐rafted debris signal. According to the... |
| Tipo: Text |
Palavras-chave: Dawson tephra; Heinrich Stadial; Late Pleistocene; Marine sediment; MIS3; 2. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00598/71056/69371.pdf |
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| Nova,Patricia Villa; Avilla,Leonardo S.; Oliveira,Édison V.. |
| The present study acknowledges the diversity of fossil marsupials from the Gruta dos Moura cave, as well as environmental and climatic aspects during the Quaternary. The results show that this is the largest diversity of Pleistocene marsupials recorded in a single cave: Didelphis albiventris, D. aurita, Gracilinanus agilis, G. microtarsus, Marmosa murina, Monodelphis brevicaudata, M. domesticaand Sairadelphys tocantinensis. Furthermore, the described specimens are also part of the only fossil assemblage unequivocally referable to the late Pleistocene. Paleontological studies suggest an intimate association with dry and open environments with high abundance of water sources. Since most of the identified taxa are characteristic of open forests and gallery... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mammals; Didelphidae; Marsupials; Northern Brazil; Quaternary; Late Pleistocene. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100193 |
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| Dalibard, Mathieu; Popescu, Speranta-maria; Maley, Jean; Baudin, Francois; Melinte-dobrinescu, Mihaela-carmen; Pittet, Bernard; Marsset, Tania; Dennielou, Bernard; Droz, Laurence; Suc, Jean-pierre. |
| The essential characteristics of the vegetation dynamics of tropical Africa remain only partially known. This study assesses the succession of vegetation-types over Central Africa during the last two glacial/interglacial cycles. Analysis of core KZai 02, which contains pollen from the Zaire River watershed (latitudes 9°N-13°S), allows the investigation of long-term patterns of plant ecosystem development and their climatic causes. Core KZai 02 (18.20 m long) was recovered from 6°24.20′S/9°54.10′E in the uppermost axial edifice of the Zaire deep sea fan. The chronology of this sedimentary archive was established using nannofossils and correlations of pollen and total organic carbon signals with the nearby core GeoB1008. The pollen record indicates that: (i)... |
| Tipo: Text |
Palavras-chave: Central Africa; Climate; Environmental parameters; Late Pleistocene; Pollen; Vegetation dynamics. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00199/31031/29436.pdf |
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| Cortese, G; Dolven, Jk; Bjorklund, Kr; Malmgren, Ba. |
| Artificial Neural Networks (ANN) were trained by using an extensive radiolarian census dataset from the Nordic (Greenland, Norwegian, and Iceland) Seas. The regressions between observed and predicted Summer Sea Temperature (SST) indicate that lower error margins and better correlation coefficients are obtained for 100 m (SST100) compared to 10 m (SST10) water depth, and by using a subset of species instead of all species. The trained ANNs were subsequently applied to radiolarian data from two Norwegian Sea cores, HM 79-4 and MD95-2011, for reconstructions of SSTs through the last 15,000 years. The reconstructed SST is quite high during the Bolling-Allerod, when it reaches values only found later during the warmest phase of the Holocene. The climatic... |
| Tipo: Text |
Palavras-chave: Artificial neural networks; Radiolarians; Nordic seas; Late Pleistocene; Holocene. |
| Ano: 2005 |
URL: https://archimer.ifremer.fr/doc/00229/34074/32535.pdf |
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| PRIETO,ALFREDO; LABARCA,RAFAEL; SIERPE,VÍCTOR. |
| Southern Patagonia is rich in late Pleistocene mammals, especially herbivores such as Camelids, Equids and Xenarthrans. Carnivores, on the other hand, are not commonly found in the paleontological record. One genus, Smilodon, is of particular interest because its presence in the region has not been demonstrated. In this paper, we present new fossil dental evidence that supports the presence of Smilodon populator (Lund) in the region. This evidence corresponds to the most southern record of the genus in the world, and the final step in the colonization of South America after the Great American Biotic Interchange. An AMS radiocarbon date on teeth indicates that the remains from Southern Chilean Patagonia are the most recent record for the genus in South... |
| Tipo: Journal article |
Palavras-chave: Late Pleistocene; Smilodon; Southern Patagonia; Taxonomy. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000200010 |
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| Reis, A. T.; Maia, R. M. C.; Silva, C.g.; Rabineau, Marina; Guerra, J.v.; Gorini, C.; Ayres, A.; Arantes-oliveira, R.; Benabdellouahed, M; Simoes, I.; Tardin, R.. |
| A combined analysis of seismic and morphological features identified in a set of high-resolution seismic reflection and bathymetric data, shows a systematic relationship between major modern seafloor morphological traces and the basinward migration of Late Pleistocene coastlines along the continental shelf of the Santos basin (Rio de Janeiro State, SE Brazil). Observed fairly continuous and sinuous mid-outer shelf escarpments are related to the sea-level variations and shelf exposure during the Last Glacial cycle. A bathymetric step at -110 m is an erosional remnant of offlapping detached forced-regressive wedges that spread over 50 km in the shelf-dip direction, probably developed during periods of falling sea level between MIS 3 and 2. A second major... |
| Tipo: Text |
Palavras-chave: Continental shelf geomorphology; Forced regression; LGM shoreline; Late Pleistocene; Post-LGM transgression; Brazil Current. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00169/28041/27268.pdf |
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| Dennielou, Bernard; Jallet, Laurent; Sultan, Nabil; Jouet, Gwenael; Giresse, Pierre; Voisset, Michel; Berne, Serge. |
| Emplacement of post-glacial turbidites is commonly controlled by rapid changes in sea level or by seismicity. On the continental rise of the Gulf of Lions (Western Mediterranean), an aseismic area, we identified turbiditic beds deposited during the rising stage and highstand of sea level. Swath bathymetry, sediment cores, in situ Cone Penetrating Tests (CPTU), heavy mineral associations and radiocarbon dating determined the source, composition, distribution and age of the turbiditic beds. Turbidites are composed of homogeneous to positively graded silts to medium sand with quartz (up to 90%), shell debris and shelfal benthic faunas. Their distribution on the sea floor is very patchy and controlled by abundant inherited erosional bedforms. Their source is... |
| Tipo: Text |
Palavras-chave: Holocene; Late Pleistocene; Sea level; Turbidites; Sand; Outer shelf; Canyons. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6316.pdf |
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| Harff, Jan; Flemming, Nicholas C; Groh, Andreas; Hunicke, Birgit; Lericolais, Gilles; Meschede, Martin; Rosentau, Alar; Sakellariou, Dimitris; Uscinowicz, Szymon; Zhang, Wenyan; Zorita, Eduardo. |
| This chapter gives an overview of the environmental changes to the European shelf and its marginal seas during the Late Pleistocene to the Middle Holocene. It first explains the regional tectonics of Europe. The age of the consolidation of the basement together with the plate tectonic setting serves as the main parameters determining coastal formation. Next, the chapter reviews the fluctuation of glacial and interglacial stadia as an effect of orbital parameters of the Earth around the Sun. In addition, it examines eustatic change during the Last Glacial Cycle (LGC). The chapter also describes the development of the Baltic Sea, the North Sea and the Atlantic shelf, based on numerical sea-level scenarios constrained by observational data. Finally, it... |
| Tipo: Text |
Palavras-chave: Baltic Sea; Climate change; Coastal formation; Environmental changes; European continental shelf; Eustatic change; Late Pleistocene; Middle Holocene; Sea level. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00391/50263/51051.pdf |
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| Pelejero, C.; Calvo, E.; Barrows, T. T.; Logan, G. A.; De Deckker, P.. |
| Alkenone palaeothermometry has demonstrated a wide spatial and temporal applicability for the reconstruction of sea-surface temperatures (SST). Some oceanic realms, however, remain poorly studied. We document U-37(K) index data for two sediment cores retrieved from the South Tasman Sea, one west of New Zealand (SO136-GC3) and the other southeast of Tasmania (FR1/94-GC3), extending back 280 kyr BP for the former and 460 kyr BP for the latter. High climatic sensitivity on orbital time scales is observed at both locations, particularly west of New Zealand, where typical glacial/interglacial SST amplitudes always span more than 7 degrees C. Southeast of Tasmania, SST amplitudes are lower in amplitude (4.3 to 6.9 degrees C) with the exception of Termination IV,... |
| Tipo: Text |
Palavras-chave: SST; South Pacific Ocean; Molecular biomarker; Late Pleistocene; U-37(K); Marine Isotopic Stage 11. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00234/34530/33425.pdf |
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| Marsset, Tania; Xia, D; Berne, Serge; Liu, Z; Bourillet, Jean-francois; Wang, K. |
| The Bohai Sea is a shallow sea at the east coast of China. It communicates with the Yellow Sea through a narrow strait. During and since the Late Pleistocene, the Bohai Sea has been a filled subsiding basin submitted to successive regressive-transgressive cycles. In the East Bohai Sea, a number of finger-shaped ridges are present near the strait, where tidal currents are dominant. Very-high resolution seismic reflection data have been interpreted relative to sedimentological data provided by a formerly drilled borehole. Seven seismic units are identified and correlated with the following events: units U7-U6 with the Bohai relative sea level rise (65,000–53,000 yr B.P.) and a relative sea level fall (53,000–39,000 yr B.P.); unit U5 with the Xianxian... |
| Tipo: Text |
Palavras-chave: Eastern Bohai Sea; Late Pleistocene; Stratigraphy; Relative sea level variations; Tidal ridges; Very-high resolution seismic. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00061/17193/14695.pdf |
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| Banuls-cardona, S.; Lopez-garcia, J. M.; Blain, H. -a.; Lozano-fernandez, I.; Cuenca-bescos, G.. |
| This paper presents a palaeoenvironmental and palaeoclimatic approach to the end of the Last Glacial Maximum (LGM) in the Iberian Peninsula on the basis of the small-mammal assemblages (insectivores, bats and rodents). The LGM is an important period in our climate history defined by the maximum extension of ice sheets between ca. 22 and 19 ka BP. In the Mediterranean region the LGM is characterized by humid conditions, which allow for the development of arboreal vegetation. The small-mammal remains described in this study were recovered from four different sites within the Iberian Peninsula: El Miron cave (Ramales de la Victoria, Cantabria), Valdavara-1 (Becerrea, Lugo), El Portalon (Sierra de Atapuerca, Burgos), and Sala de las Chimeneas (Maltravieso,... |
| Tipo: Text |
Palavras-chave: Microvertebrate; Palaeoenvironment; Palaeoclimate; LGM; Late Pleistocene. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00291/40239/38657.pdf |
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| Alvarez-lao, Diego J.; Kahlke, Ralf-dietrich; Garcia, Nuria; Mol, Dick. |
| Fossil remains of at least four mature to old mature male individuals of Mammuthus primigenius have been discovered in a peat-bog of Late Pleistocene age, situated near to the town of Padul in the Granada Basin (Southern Spain). Radiocarbon dates indicate the presence of woolly mammoth in Southern Spain between 35.8 and 25.7 ka BP (40.4-30.6 cal ka BP), a time span corresponding with the later part of MIS 3. The Padul mammoths did not differ morphometrically from individuals of contemporaneous populations of other European regions, but represent the westernmost portion of an extended and continuous Holarctic belt of mammoth distribution. The area immediately northwest of the Pyrenees including a slender belt of dry land along the coast of the Bay of Biscay... |
| Tipo: Text |
Palavras-chave: Late Pleistocene; Mammuthus primigenius; Palaeobiogeography; Holarctic; Southern Spain. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00219/33072/31555.pdf |
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| Registros recuperados: 21 | |
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