Blar i Artikler på forfatter "Olsen, Lars"
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A 6-ka climatic cycle during at least the last 50,000 years.
Olsen, Lars; Hammer, Øyvind (NGU Bulletin (445), Journal article, 2005)The distribution of 264 dates in the interval 12,000-50,000 years BP from terrestrial and raised marine sediments from ic-free intervals in Norway shows a fairly strong cycle with a period of c.6 thousand years. The cycle, ... -
A buried late MIS 3 shoreline in northern Norway - implications for ice extent and volume
Olsen, Lars (NGU Bulletin (450), Journal article, 2010)Buried beach gravel in northern Norway represents a late Middle Weichselian\/Marine Isotope Stage (MIS) 3 shoreline and indicates a significant late MIS 3 ice retreat. An age of c. 50-31 cal ka BP, or most likely c. 35-33 ... -
Age of the Younger Dryas ice-marginal substages in Mid-Norway - Tautra and Hoklingen, based on a compilation of 14C-dates
Olsen, Lars; Sveian, Harald; Høgaas, Fredrik (NGU Bulletin (454), Journal article, 2015)The ice-marginal Tautra and Hoklingen Substages in the Trøndelag counties, Mid-Norway, have for a long time been referred to as of early and late Younger Dryas (YD) age, respectively. The basis for this is the regional ... -
Bavtajohka Interglacial, the oldest Pleistocene vegetational record from Norway
Olsen, Lars; Selvik, Synøve F. (NGU Bulletin (427), Journal article, 1995)Frie emneord: Paleobotanikk -
Distribution of rock fragments, grain size and chemical elements of tills in the Lake Mjøsa area, eastern Norway
Reimann, Clemens; Olsen, Lars; Fredin, Ola; Follestad, Bjørn A. (NGU Bulletin (453), Journal article, 2014)The Lake Mjøsa area in eastern Norway forms an interesting case to study glacial erosion, transport and deposition because bedrock lithology (source of till) is relatively well known and the Geological Survey of Norway ... -
Isbevegelse i Lillehammer-området, Sør-Norge, under siste nedising.
Olsen, Lars (NGU (378), Journal article, 1983)The ice movement from the last glaciation in the northern part of the lake Mjøsa district are presented in an ice phase model. Four main ice phases are reconstructed mainly based on striation, but fluted surfaces, poorly ... -
Methods and stratigraphies used to reconstruct Mid- and Late Weichselian palaeoenvironmental and palaeoclimatic changes in Norway.
Olsen, Lars; Grøsfjeld, Kari; Stokland, Øystein; Lauritzen, Stein-Erik; Selvik, Synøve F.; Bergstrøm, Bjørn; Sveian, Harald (NGU Bulletin (438), Journal article, 2001)A review is presented on the comprehensive stratigraphic database and the methods used for palaeoclimatic and palaeoenvironmental interpretations in Norway during the Mid- to Late Weichselian time interval. The reconstructions ... -
Mid and Late Weichselian, ice-sheet fluctuations northwest of the Svartisen glacier, Nordland, northern Norway.
Olsen, Lars (NGU Bulletin (440), Journal article, 2002)During the last decade, general Quaternary geological mapping in Nordland county, northern Norway, has provided field-data, supported by radiocarbondating, which have been used as a basis for reconstructing the palaeoclimaticand ... -
Middle and Late Pleistocene stratigraphy, chronology and glacial history in Finnmark, North Norway.
Olsen, Lars; Selvik, Synøve F.; Mejdahl, Vagn (NGU Bulletin (429), Journal article, 1996)The Pleistocene superficial deposits in Finnmark, North Norway, were investigated in about 250 excavations and drillings during the period 1960-1990. Based on this regional background data six localities on Finnmarksvidda ... -
Middle and Late Weichselian high relative sea levels in Norway: Implications for glacial isostasy and ice-retreat rates.
Olsen, Lars; Grøsfjeld, Kari (NGU Bulletin (435), Journal article, 1999)Highly uplifted Middle Weichselian marine sediements at Høgjæren, SW Norway, have previously been explained by tectonic movements, glacial isostasy or a combination of these factors, whereas most recent studies seem to ... -
Morenestratigrafi og isbevegelser fra Weichsel, sørvestre Finnmarksvidda, Nord-Norge.
Olsen, Lars; Hamborg, Martin (NGU (378), Journal article, 1983)At least 6 different till units exposed in a 50 m high section along theVuolgamasjåkka river. Starting from the top there are three basal tillsresting on sorted sediments, and below that there are tills alternating ... -
Neotectonics in the Ranafjorden area, northern Norway
Olsen, Lars; Skogseth, Terje; Olesen, Odleiv; Gjelle, Svein; Henkel, Herbert; Karlsen, Tor Arne (NGU Bulletin (427), Journal article, 1995) -
Quaternary palaeosols in Norway - examples from selected areas
Olsen, Lars (NGU Bulletin (427), Journal article, 1995) -
Rundingsanalyser på grus- og steinpartikler - et nyttig hjelpemiddel ved undersøkelser av løsmassenes genese.
Olsen, Lars (NGU; Skrifter (379; 39), Journal article, 1983)A combined method for determination of clast roundness based on a visual estimation method and the newly defined parameter crushing, provides good and quite detailed information on the total roundness of a collection of ... -
Sub-till sediments at Rokoberget, Southeastern Norway
Selvik, Synøve F.; Rokoengen, Kåre; Olsen, Lars (NGU Bulletin (424), Journal article, 1993)A dark blue-grey, silty clay below till is described from a locality 230 m a.s.l. in the Rokosjøen depression east of Mjøsa. The sediment is glacially deformed but interpreted to represent a deposit from a period with local ... -
The Tromsø-Lyngen glacier readvance (early Younger Dryas) at Hinnøya-Ofotfjorden, northern Norway: a reassessment
Bergstrøm, Bjørn; Sveian, Harald; Olsen, Lars (NGU Bulletin (445), Journal article, 2005)Based on radiocarbon dates, marine seismic data, mapping of surficial deposits, observations of marine limits and shoreline correlations, we have documented a considerable glacier readvance during the Tromsø-Lyngen event ...