inscription
Portail d'information géographique

Résultats de la recherche (2428 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Late Glacial and Late Holocene moraines in the Cerros Cuchpanga, central Peru
  • Chironomid evidence for late-glacial climatic reversals in Maine
  • The purpose of this paper is to apply the technique of chironomid analysis to sites in Maine, (two ponds: Trout and Tilley), in order to determine whether late-glacial warming there was monotonic, as suggested by previous pollen studies
  • Late glacial and Holocene vegetation history at Poets Hill lake, western Tasmania
  • This paper will describe the late glacial and Holocene pollen and vegetation record from Poets Hill Lake and compare the results with the other sites from varying altitudes in the same region. This comparison suggests that the development of pollen
  • /vegetation associations was time transgressive with altitude during the late glacial when climatic influences and migration rates were important, and that the mosaic of vegetation communities became more complex during the Holocene because of adjustment
  • Absolute dating of the late-glacial period in Switzerland using annually laminated sediments
  • The two investigated sites are located in the Canton of Lucerne, on the Central Swiss Plateau : Rotsee and Soppensee. The AA. compare the results of the late-glacial radiocarbon chronology from Rotsee and on the late-glacial varve chronology from
  • Fluviatile Dynamik im Mittelwesertal während des Spätglazials und Holozäns Late Glacial and Holocene river dynamics in the Middle Weser Valley
  • The investigations on Late Glacial and Holocene deposits in the middle Weser valley concentrated on high-flood sediments as well as on sedimentary and sedentary fillings of abandoned river meanders. A stratigraphy of the Late Glacial and Holocene
  • Late-glacial vegetation and climate change in Western Oregon
  • The AA. describe 2 detailed pollen records of the late-glacial period from western Oregon. They provide information on late-glacial variations in vegetation and climate and on the extent and character of Younger Dryas cooling in the Pacific
  • Neuere Funde des Weichselspätglazials in Schleswig-Holstein. (Some new findings of late Glacial sections in Schleswig-Holstein)
  • Three sections containing Late Glacial deposits (especially of Allerod Interstadial Age) are described. The stratigraphy of the Late Glacial is discussed for the area of Schleswig-Holstein. The Bolling Interstadial is well marked by a maximum
  • The late glacial-early glaciomarine transition in the Ottawa Valley : evidence for a glacial lake?
  • In this article, the boundaries of the Post Glacial to the Late Glacial are differentiated taking the Rolwaling Khola and the Kangchenjunga Massif and their times since Last Glacial Maximum (LGM). In Rolwaling as well as in Yalung/Simbua Khola
  • on the Kangchenjunga SW side, Neo- to Late Glacial ice margins can be distinguished.
  • Late Quaternary glacial and climate history of the Pamir Mountains derived from cosmogenic Be 10 exposure ages
  • Geochronology ; Glacial features ; Isotope dating ; Magnetic susceptibility ; Moraine ; Mountain ; Palaeoclimatology ; Pamir ; Quaternary ; Stratigraphy ; Tadzhikistan
  • Moraines southwest of Lake Yashilkul, Tajikistan, were dated using Be 10 exposure ages of boulder surfaces. The AA. establish a glacial chronology for the Yashilkul area. The main focus lies on the timing of the local last glacial maximum
  • and on the comparison with high-resolution temperature and precipitation proxies in order to determine whether the glacial advances can be explained with changes in temperature or precipitation.
  • The post to late glacial valley reconstruction on the Haramosh north side (Mani, Baska and Phuparash valleys)
  • Asia ; Glacial features ; Glacial valley ; Karokoram ; Lateral moraine ; Palaeo-environment ; Postglacial
  • depression and relative age classification, using the method of Kuhle, is reported in this article. A high glacial ice filling of the Haramosh valley and glacial erosion of the flat top of the Darchan ridge as an intermediate valley head is strongly probable.
  • Paleoenvironments and human occupation in Late-Glacial Panama
  • Geomorphological evolution of selected mouth sections of the lower Vistula river tributaries in the late Glacial and Holocene
  • Tentative explanation of the late glacial end early Holocene climatic changes in Northwestern Europe
  • Palaeowetness indicators in a Weichselian Late Glacial to Holocene aeolian succession in the southwestern Netherlands
  • Late Vistulian (= Weichselian) and Holocene aeolian phenomena in central and northern Europe
  • In a Weichselian Late Glacial to Holocene succession that overlies a substrate of low permeability, fossil wetness features occur in a variety of forms. It is the objective of this paper to discuss the characteristics and paleoenvironmental
  • Late-Pleistocene eolian sand sheets in Alaska
  • , and vegetation, and 2) many surface dunes reflect late-glacial and postglacial reworking under conditions of increased short-term availability of loose sand. The morphology of some surface dunes may therefore reflect mainly the intensity of reworking since
  • The AA. hypothesize that 1) many of the subhorizontally stratified deposits represent full-glacial eolian sand sheets, formed when sand supply was limited by seasonally variable combinations of ice cementation, snow cover, high groundwater tables
  • the last glacial maximum, rather than full-glacial paleowind vectors or the age of the bulk of the underlying deposits.
  • Late Wisconsinan deglaciation and glacial lake development in the Appalachians uplands and piedmont of southeastern Quebec
  • Late Quaternary history of the White Mountains, New Hampshire and adjacent southeastern Québec
  • Appalachian Mountains ; Canada ; Deglaciation ; Geochronology ; Glacial flow ; Glacial lake ; Moraine ; Palaeogeography ; Quaternary ; Quebec ; Varves ; Wisconsinan
  • Cataclysmic late Pleistocene flooding from glacial Lake Missoula: a review
  • Late Wisconsin floods from glacial Lake Missoula occurred between approximately 16 and 12 ka BP. Many floods occurred| some were demonstrably cataclysmic. After resolution of the scabland's origin by cataclysmic outburst flooding from glacial Lake
  • A model of late Quaternary landscape development in the Delaware Valley, New Jersey and Pennsylvania
  • Colluvium ; Erosion ; Geochronology ; Geomorphogenesis ; Glacial features ; Model ; Oxygen 18 ; Pedogenesis ; Periglacial features ; Quaternary ; United States ; Wisconsinan
  • This paper proposes a chronologic model for late Quaternary nonglacial events, and relates them to glacial episodes in the Delaware Valley of eastern Pennsylvania and northwestern New Jersey.
  • Late Wisconsin and early Holocene glacial history, inner Ross Embayment, Antarctica
  • The AA. describe here late Quaternary paleoclimate, ice-volume change, and dynamics of the Ross ice drainage system using data from a powerful combination of drift sheets and ice cores.