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Stratigraphic context of Old Crow tephra, Holitna lowland, interior southwest Alaska
  • Stratigraphic context of Old Crow tephra, Holitna lowland, interior southwest Alaska
  • The purpose of this paper is to document the stratigraphic and paleoenvironmental context of Old Crow tephra at the southwestern limit of its known distribution, thus contributing to interregional efforts to reconstruct Pleistocene paleoclimates
Ground penetrating radar survey and stratigraphic interpretation of the Plan du Lac rock glaciers, Vanoise Massif, Northern French Alps
  • Ground penetrating radar survey and stratigraphic interpretation of the Plan du Lac rock glaciers, Vanoise Massif, Northern French Alps
  • Etude des limites internes des glaciers rocheux du Plan du Lac dans les Alpes du Nord françaises à l'aide d'un radar à pénétration dans le sol et de leur corrélation avec la morphologie de surface.
The Holstein Interglaciation : time - stratigraphic position and correlation to stable-isotope stratigraphy of deep-sea sediments
  • The Holstein Interglaciation : time - stratigraphic position and correlation to stable-isotope stratigraphy of deep-sea sediments
  • Marine molluscan shells from para-type and other localities of the Holsteinian interglaciation were dated by Th/U and the election spin resonance method to more than 350,000 and 370,000 yr B.P., beyond the limit of Th/U dating. The high age estimate
Stratigraphic and morphologic constraints on the Weichselian glacial history of northern Prins Karls Forland, western Svalbard
  • Stratigraphic and morphologic constraints on the Weichselian glacial history of northern Prins Karls Forland, western Svalbard
  • This paper reports stratigraphic and morphologic data from the Mc Vitiepynten area, northern Prins Karl Forland that further constrain the Weichselian glacial history of Prins Karls Forland and highlight the question of the westward extension
  • and that glacial activity is limited to the expansion of local glaciers during oxygen isotope stage 4 or late in stage 5 and during the Late Weichselian.
Old Crow tephra: a new Late Pleistocene stratigraphic marker across north-central Alaska and western Yukon Territory
  • Old Crow tephra: a new Late Pleistocene stratigraphic marker across north-central Alaska and western Yukon Territory
  • Old Crow tephra is the first extensive Pleistocene tephra unit to be documented in the northwestern part of North America. It has an age between the limits of 60,000 and 12,000 yr, set by C and fission-track measurements, respectively. Old Crow
  • to the distant locations of potential Quaternary volcanic sources, demonstrate the widespread distribution of this tephra and underscore its importance as a regional stratigraphic marker.
Quaternary glaciations in the Río Mendoza valley, Argentine Andes
  • Andes ; Argentine ; Glaciation ; Géochronologie ; Holocène ; Limite d'enneigement ; Moraine ; Paléogéographie ; Pléistocène ; Quaternaire ; Stratigraphie
  • , and stratigraphic relationships. Several absolute ages suggest a preliminary chronology.
Holocene glacial sequence and soils of stratigraphic importance, Mer de Glace, Western Alps, France
  • Holocene glacial sequence and soils of stratigraphic importance, Mer de Glace, Western Alps, France
  • Dans les Alpes occidentales, par l'analyse des limites glaciaires, mise en évidence de trois unités majeures : un groupe récent de deux ensembles de moraines datant du classique « Petit Age Glaciaire », et des moraines plus anciennes de l'Holocène
Recent advances in luminescence dating of Late Pleistocene (cold-climate) aeolian sand and loess deposits in Western Europe
  • -dating of palaeosols and other stratigraphic marker horizons.There still are various uncertainties in the interpretation of luminescence ages due to methodological problems, difficulties in field extrapolation of stratigraphic relationships, and limited
Description and genesis of buried sand-filled soil wedges near Flagstaff, Arizona
  • Buried, sand-filled soil wedges exposed in stratigraphic sections at 2 sites near Flagstaff, are larger than any observed desiccation cracks or fissures in modern surface soils or sediments but they are smaller than typical periglacial sand wedges
  • or ice-wedge casts formed in continuous permafrost. Their size, spacing, and other characteristics most resemble those of soil wedges formed by seasonal frost craching found near and beyond the southern limit of permafrost in areas where mean annual
  • temperatures are about 0°C. Stratigraphic relations and relative degree of development of associated soils suggest the wedges in Flagstaff are of late Wisconsin age whereas.
Lithological and stratigraphical analysis of loess profiles of the Loess Plateau in China in Lithology and stratigraphy of loess and paleosols.
  • Lithological and stratigraphical analysis of loess profiles of the Loess Plateau in China in Lithology and stratigraphy of loess and paleosols.
  • A detailed stratigraphic division of loess deposits in three selected profiles was carried out based on lithologic and paleomagnetic analyses. (DLO).
Middle Pleistocene climate change recorded in fossil mammal teeth from Tarija, Bolivia, and upper limit of the Ensenadan land-mammal age
  • Middle Pleistocene climate change recorded in fossil mammal teeth from Tarija, Bolivia, and upper limit of the Ensenadan land-mammal age
  • ), documented from 8 stratigraphic levels at Tarija, vary significantly in the C 13 values of their teeth. These new isotopic data are used here to identify warm-cold paleoclimatic cycles during the middle Pleistocene and clarify the upper limit
A critical evaluation of pollen-stratigraphic investigations of pre-Late Devensian sites in Scotland
  • A critical evaluation of pollen-stratigraphic investigations of pre-Late Devensian sites in Scotland
  • This paper reviews pollen-stratigraphic evidence from proposed interglacial and pure-late Devensian interstadial sites in Scotland. In a first part the stratigraphic details of each of the sites are summarised and discussed. In the second part
  • general problems of interpretation are discussed in the light of the stratigraphic details. In the concluding section of the paper certain procedures are proposed that may permit a clearer assessment of potential problems of taphonomy in pollen
Quantitative refinement of calibrated 14C distributions
  • A new method is presented for using known ordering or other relationships between 14C samples to reduce 14C dating uncertainty. The order of sample formation is often known from,stratigraphic superposition, dendrochronology, or cross-cutting field
  • relations. Constraints such as a minimum time between dates and limits from historical information are also readily included. The approach is illustrated with data from two densely sampled paleoseismic sites on the San Andreas fault in southern California.
Die Neogen/Quartär-Grenze. Territorium der Deutschen Demokratischen Republik. (The boundary between Neogene and Quaternary on the Territory of the German Democratic Republic)
  • Allemagne de l'Est ; Cénozoïque ; Gphy ; Géographie physique ; Limite Néogène-Quaternaire ; Plio-Pléistocène ; Quaternaire inférieur ; Quaternaire zones moyennes ; Stratigraphie ; Sédimentologie
  • On the base of floristic comparisons, petrographic and other investigations, the detailed stratigraphical correlation of a series of sediments on the territory of the GDR is discussed| these sediments are belonging to the transitional zone Neogene
Origin of NE-trending basins in western Turkey
  • The stratigraphical and structural aspects of the basin fill in the E-W Grediz Graben and in the NE-trending Gördes, Demirci, Selendi and Upsak-Güre basins located immediately to the north of the graben are reassessed here. This paper gives
  • by normal and oblique-slip faults limiting the NE-basins, and also by open folds within these basins.
Stratigraphic significance of Upper Devonian and Lower Carboniferous miospores from the type area of the Horton Group, Nova Scotia
  • Stratigraphic significance of Upper Devonian and Lower Carboniferous miospores from the type area of the Horton Group, Nova Scotia
  • Biostratigraphy ; Canada ; Dating ; Nova Scotia ; Palaeogeography ; Palaeozoic ; Stratigraphic correlation ; Stratigraphy
Radiocarbon analyses from Cincinnati, Ohio, and their implications for glacial stratigraphic interpretations
  • Radiocarbon analyses from Cincinnati, Ohio, and their implications for glacial stratigraphic interpretations
  • In this paper, the AA. consider how age variations, as reported, may allow alternative interpretations of existing glacial-stratigraphic models.
Latest Pleistocene and Holocene stratigraphical records for sea-level reconstruction in Kanto Plain, Central Japan in International symposium on coastal evolution in the Holocene.
  • Latest Pleistocene and Holocene stratigraphical records for sea-level reconstruction in Kanto Plain, Central Japan in International symposium on coastal evolution in the Holocene.
  • Relative sea-level change curves in the Kanto Plain from stratigraphical and geological evidences.
Stratigraphic evidence for anthropogenically induced coastal environmental change from Oaxaca, Mexico
  • Stratigraphic evidence for anthropogenically induced coastal environmental change from Oaxaca, Mexico
  • This paper uses stratigraphic data from sediment cores extracted from Laguna Pastoria, an estuary in the lower Río Verde Valley, to examine changes in coastal geomorphology potentially triggered by highland erosion. Coastal lagoon sediments contain
  • a stratigraphically and chronologically distinct record of major hurricane strikes during late Holocene times, possibly caused by increased El Niño frequencies. These environmental changes may have had significant effects on human populations in the region.
Stratigraphic and tectonic evolution of the Pliocene Abruzzi basin (Central Apennines, Italy)
  • Stratigraphic and tectonic evolution of the Pliocene Abruzzi basin (Central Apennines, Italy)
  • sector characterized by successions with different stratigraphic evolution. This research shows the migrating behaviour of major and minor stratigraphic-structural elements ; that is realized through the progressive involvement of different sectors during