DOCSLIB.ORG

Stratigraphy of the Otta-Vaqa Tract and Regional Stratigraphic Implications

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Stratigraphy of the Otta-Vaqa Tract and Regional Stratigraphic Implications NGU · BULL 427.1 995 B. A. Stutt, R. ee« D. M. Ramsay & T. Bjerkg~ rd 25 Stratigraphy of the Otta-Vaqa tract and regional stratigraphic implications 8RIAN A. STURT. REIDULV 80E, DONALD M. RAMSAY & TERJE BJERKGARD Brian A. Sturt & Reidulv Bee, Norges geologiske unaersokelse, P.O.Box 3006 · Lade, 7002 Trondheim, Norway. Donald M. Ramsay, Geology Departmen t, University of Glasgow, GLB2 BOO Glasgow, Scotland. Terje Bjerkg~rd, Institutt for geologi, Universitetet i Oslo, P.O.Box 1047, Blindern, 0316 Oslo, Norway. Sturt et al. (1991) and Bee et al. (1993) have ve the unconform ity, and the logs are presented described a first-order stratigraphic unconformity as Fig. 2. beneath the Sel Group in the Otta-Vaga map The log from the stream Verkesae (Fig. 2) areas (1:50,000 sheets 1618 I, 1718 I). This shows the basal sediments to be typical schists unconformity separates the Sel Group from a and phyllites of the Sel Group reposing on polyp­ substrate of the Vagamo Ophiolite which was hasally folded semi-psammites of the Heidal already thrust in, on the Ottadalen Thrust, onto a Group, replete with garnets up to 1.5 cm in dia­ basement-cover couplet of the Rudiho Gneiss meter. The Sel schists and phyllites have dis­ Complex (Baltic continental crust) and the tinctly preserved, delicate bedding structures unconformably overlying cover succession of the and pass up into well-bedded sandstones which Heidal Group. The Heidal Group had undergone preserve sporadic examples of cross-bedding a complex tectonometamorphic evolution , and showing downward facing. The Sel sediments the ophiolite was folded, prior to uplift, deep ero­ show an initial coarsening-upward succession sion and deposition of the Sel clastic wedge culminating in a massive coarse conglomerate which includes continental, fan-deltaic and mari­ some 150 m thick. This is a poorly sorted, clast­ ne sediments. The sub-Sel unconformity and supported conglomerate of the Skardshoi type conglomerate composition indicate that the Sel (Bee et al. 1993) containing sub-angula r clasts Group is a terrane-Iinking succession , showing with a maximum c1ast diameter around 20 cm. that the Vagamo Ophiolite had already been The c1asts comprise mainly quartzite, psammite, obducted onto a former westward extension of semi-psammite (sometimes garnet-bearing), the Fennoscandi an Shield prior to the Scandian calc-silicate gneiss, vein quartz, brown limesto­ thrusting of the Otta Nappe. During fieldwork in ne/dolomite and banded amphibolite. These the summer of 1994, a perfect example of the c1asts preserve abundant evidence of pre-pebble unconformity between the Heidal Group and ser­ deformation and strongly reflect the lithologies of pentine conglomerate (Otta conglomerate facies) the Heidal Group. In addition there are c1asts of was discovered at Gronlii (fig. 2 in Bee et al. basic and acidic volcanic rocks which show no 1993). The conglomerates rest on an irregular signs of pre-pebble deformation as do a number surface cut into a substrate of polyphasally of c1asts of what we interpret as metamorphose d deformed Heidal calc-silicate gneisses and ferrosaprolite.The overall characteristics of the psammites , though at this locality no indication of log are of a fine-graine d succession (fine-grained preserved regolith is present. sandstones , schists and phyllites) making up to The northeastward extension of the mapping 50% of the section, limestone 5% and conglome­ into map-sheets Hjerkinn (1 519 Ill) and Folldal rate 40%, producing an almost bimodal (1519 11) has allowed the unconform ity to be tra­ fine/coarse succession. At various levels in the ced into these areas, and provides additional evi­ succession , well-preserved sedimentary structu­ dence as to the nature of this unconformity. The res (cross-bedding, channels , grading, etc.) can unconformity can, in fact, be traced from the be observed, all indicating a consistent down­ Vaga-Otta tract across the river Lagen and map­ ward-facing stratigraphic polarity and indicating ped semi-continuously along the northside of at best only limited repetitions by folding. Grimsdalen until it is exposed in the streams The log from the stream Buae shows many Verkesae and Buae (Fig. 1). The mapping shows similar facies, although here schists and phyllites that the unconform ity is stratigraphically down­ represent some 55% of the section, conglomera ­ section from the Folldal volcanite (Fundsje te 15% and limestones (dolomites) 10%. A major Group), although the rocks are structurally inver­ difference in this log is that lavas, tuffs and volca­ ted. The streams Buae and Verkesae were stra­ niclastic sandstones , with interbedded schists, tigraphically logged, each for some 1.25 km abo- phyllites and thin limestones/dolomites , occupy a 26 B. A. Sturt, R. Boe, D. M. Ramsay & T. Bj erkg i!J rd GV - BULL 427. 1995 LEGEND JOTUN NAPPE COMPLEX onA NAPPE SUB-OnA NAPPES Sel Group I conglomerate ~ f>;::::::j ~~~a:::~: :::ary cov er r.:.. j Metasedimenta ry cove r Vi\g Amo Op hiolite .. ..~ Orthogneis ses -"---L Sub-Jotun thrusts OttadaJen Thrus t Cl Helda l Gro up ~ RUdlh" Gneiss Complex ....t:.......A. ana Thr ust Fig. 1. Geological map of the VAgA-Ona·Grimsdalen area. little over 200 m of the column. The lavas are Folldal volcanite (Fundsjo Group). Similar fin­ greenstones with scattered crude pillows. though dings were made by Bjerkqard & Bjorly ke (1994 the thin tuft horizons are bimodal basic/acidic a & b) where they describe bimodal basic/acid types. This represents the first appearance of the tufts in the Asli Formation (traditionally the upper NGU - BULL 427, 1995 B. A. Stun, R. Boe, D. M. Ramsay & T. Bjerkg/1fd 27 part of the Gula Group), beneath the main Folldal VERKESAE BuAE volcanic succession. This led Bjerkqard & Bjorlykke (op.cit) to propose that the Asli Formation is not part of the Gula Group (Heidal equivalent) and that the top of the Gula Group is 1200 probably at the contact between the Asli and Sinqsas Formations. Reconnaissance mapping by two of us (D.M.R. and BAS.) has indicated that the top of the Gula Group is, at least in part, at a somewhat lower level than this formational 1000 =:.-; boundary. The comparison between the logs of the two streams, separated only by 3-4 km, shows consi­ 900 derable lateral facies variation, though the main conglomerate and limestone/dolomite horizons can be recognised. Such rapid facies changes 800 - have been emphasized in Boe et al. (1 993) in their analysis of the lower part of the Sel Group. The basal deposits of the Sel Group in Grimsdalen are interpreted as marine. During the mapping, a major but impersistent horizon of metamorphosed ferrosaprolite inclu­ 600 ding, near its top, local developments of meta­ morphosed lateritic rocks has been identified soo immediately beneath the basal deposits of the Sel Group. These rocks may represent relics of a formerly extensive blanket of regolith produced by chemical weathering, e.g. resembling that developed during the Tertiary in western Australia (Anangetal 1993). The regolith repre­ sents an alteration of various members of the Heidal Group. Such regoliths in their unmetamor­ phosed state are dominated by clay minerals 200 which, during the erosion of the uplifted terrane, will be rapidly re-sedimented to produce clays, 100 marls, etc. This process would provide a logical explanation for the pattern of fine-/coarse-grai­ ned sediments in the basal Sel Group; the fine­ grained sediments representing, to a large ~ ~ ~ :3 8 t:S extent, re-sedimented fines from the regolith and lL ::E O the conglomerate inputs relating to tectonic movements and fault-scarp evolution in the hin­ ~ Sc.~lsVphyih 1 e terland. The conglomerates of the Grimsdalen !==1 1::.\ I VoIcanics area are interpreted as mass-flow deposits in a I·.;..j... ..I Sandstone/schist ~ Limestone marine succession, possibly resulting from epi­ o Sandstone I ~~!~~·~ I Conglomerate sodic sediment transport from the adjacent land area (see also Boe et al. 1993). The major diffe­ ...- Cross·bedding rence in thickness of the conglomerates between Fig. 2. Simplified stratigraphical sections through the lower­ Verkesae and Buae probably indicates that the most part of the Sel Group at verkesae and BuAe in Verkesae section, at the beginning of deposition, Grimsda!en. The sections start at the boundary between the was closer to the centre of a pre-Sel palaeoval­ Heidal and the Se! Groups. See Rg. 1 for location of the secti­ ley. The limestones/dolomites with sigmoidal ons. cross-bedding in the upper part of the successi­ on are predominantly shallow-marine deposits, though water depths during deposition probably (Fundsjo Group) are, in fact, up-sequence deve­ varied due to tectonic instability and eustacy. lopments within the Sel Group is of considerable The discovery that the Folldal volcanite importance and indeed gives more precision to 28 B. A. Sturt, R. Boe, D. M. Ramsay & T. Bjerkgl1rd NGU . BULL 427, 1995 the dating of the major unconformity. Boe et al. References (1993) show the age control of the unconformity Anand, R.R., Phang. c., Smith, RE & Munday, T.J. 1993: The to have an upper limit at the Arenig/L1anvirn regolith and its exploration and economic significance. In boundary based on the Otta fauna . Recent U/Pb Williams, P.R & Haldane, JA (eds.) An international con­ ference on crusta! evolution, metallogeny and exploration zircon dating of the Folldal Trondhjemite has of the Eastern Goldfields. Excursion Guidebook. Record given an age of 488 :!: 2 Ma (Bjerkqard & 1993/53. Australian Geological Survey Organization, Bjorlykke 1994a), i.e. a date virtually at the Canberra, 75-100. Tremadoc/Arenig boundary, thus providing a Bjerkgard, T. & Bjorlykke, A. 1994a: Geology of the Folldal area, Southern Trondheim Region Caledonides, Norway. more accurate upper age constraint for the Nor.
Load more

Recommended publications
  • Reindeer Hunting As World Heritage a Ten Thousan Year-Long Tradition
    Reindeer hunting as World Heritage A ten thousan year-long tradition Scientific statement 2006 Reindeer hunting as World Heritage Reindeer hunting as World Heritage A ten thousand year-long tradition A ten thousand year-long tradition Contents Preface 4 8 Description of the character of the 1 Wild reindeer hunting as World area (status at the time of nomination) 48 Heritage; a ten-thousand-year-long 8.1 General description of the area 48 tradition Summary 5 8.2 Description of how the four sub-areas 2 Introduction 8 complement one another 52 2.1 Early history of the project 8 8.3 Description of the individual sub-areas 53 8.3.1 Eikesdalsfjella 53 2.2 Information for national and municipal authorities 8 8.3.2 Snøhetta 54 8.3.3 Rondane 56 2.3 Consolidation of the project 8 8.3.4 Reinheimen 60 2.4 Openness and information 9 8.3.5 Buffer zone between the Eikesdalsfjella and This report has been prepared by a team of specialists appointed for the project: ”Wild reindeer 2.5 Broad foundation 9 Snøhetta sub-areas 63 hunting as World Heritage”: 2.6 Revitalisation and regional involvement 9 8.3.6 Buffer zone between the Snøhetta and Rondane - Professor Reidar Andersen, Museum of Archaeology and Natural History, Norwegian sub-areas 63 University of Science and Technology 3 Wild reindeer – history, genetics and - Per Jordhøy, Adviser at the Norwegian Institute for Nature Research habitat use 11 9 History and development 64 - Jostein Bergstøl, Research archaeologist at the Museum of Cultural History, 10 Komparativ analyse 67 University of Oslo 3.1
    [Show full text]
  • Innlandet P Olitidistrikt
    Innlandet p olitidistrikt Tilrådning Arbeidsgruppens forslag til politimesteren om effektivisering av tjenesteenheter og tjenestesteder i Innlandet pd _______________________________________________________________________ Versjon 1.0 201601032 - 2 6 Tilrådning – effektivisering av tjenesteenheter og tjenestesteder<politidistrikt> Skrevet av: Arne Hammersmark 12.10.16 Versjon: 1.0 Status: Side 2 av 54 Innhold 1 Sammendrag ................................ ................................ ................................ 3 1.1 Bakgrunn og formål ................................ ................................ .................. 5 1.2 Avgrensninger og avhengigheter ................................ ................................ 6 1.3 Tilnærming og organisering ................................ ................................ ....... 6 2 Dagens situasjon ................................ ................................ ............................ 7 2.1 Dagens organisering ................................ ................................ ................. 7 2.2 Faktaopplysninger ................................ ................................ ................... 11 2.3 Be hov og erfaringer med dagens organisering ................................ ............ 14 3 Vurdering av alternativer ................................ ................................ ................ 17 3.1 Alternative tjenestestedsstrukturer ................................ ............................ 17 3.1.1 Forslag til ny organisering i Gudbrandsdal ...............................
    [Show full text]
  • Evidence for Rapid Paraglacial Formation of Rock Glaciers in Southern Norway from 10Be Surface-Exposure Dating
    Quaternary Research Copyright © University of Washington. Published by Cambridge University Press, 2020. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. doi:10.1017/qua.2020.10 Evidence for rapid paraglacial formation of rock glaciers in southern Norway from 10Be surface-exposure dating Henriette Lingea* , Atle Nesjea, John A. Matthewsb, Derek Fabelc, Sheng Xuc aDepartment of Earth Science, University of Bergen and Bjerknes Centre for Climate Research, NO-5020, Bergen, Norway bDepartment of Geography, College of Science, Swansea University, Swansea, SA2 8PP, Wales, UK cAMS Laboratory, Scottish Universities Environmental Research Centre, East Kilbride G75 0QF, Scotland, UK *Corresponding author at: E-mail address: [email protected] (H. Linge). (RECEIVED August 31, 2019; ACCEPTED January 31, 2020) Abstract We evaluate the timing and environmental controls on past rock-glacier activity at Øyberget, upper Ottadalen, southern Norway, using in situ 10Be surface-exposure dating on (1) boulders belonging to relict rock-glacier lobes at c. 530 m asl, (2) bedrock and boulder surfaces at the Øyberget summit (c. 1200 m asl), and (3) bedrock at an up-valley site (c. 615 m asl). We find that the rock-glacier lobes became inactive around 11.1 ± 1.2 ka, coeval with the timing of summit deglaciation (11.2 ± 0.7 ka). This is slightly older than previously published Schmidt-hammer surface-exposure ages. The timing does not match known climatic conditions promoting rock-glacier formation in the early Holocene; hence we infer that lobe formation resulted from enhanced debris supply and burial of residual ice during and soon after deglaciation.
    [Show full text]
  • Jotunheimen National Park
    Jotunheimen National Park Photo: Øivind Haug Map and information Jotunheimen Welcome to the National Park National Parks in Norway Welcome to Jotunheimen An alpine landscape of high mountains, snow and glaciers whichever way you turn. This is how it feels to be on top of Galdhøpiggen: You know that at this moment in time you are at the highest point in Norway with firm ground under your feet. What you see around you are the highest mountains of Northern Europe. An alpine landscape of high mountains, deciduous forests and high waterfalls. snow and glaciers whichever way you The public footpath that winds its way turn. This is how it feels to be on top up the valley crosses over the wildly of Galdhøpiggen: You know that at this cascading Utla river many times on its moment in time you are at the highest way down the valley. point in Norway with firm ground under your feet. What you see around Can you see yourself on top of one you are the highest mountains of of the sharpest ridges? Mountain Northern Europe. climbing in Jotunheimen is as popular today as when the English started to Jotunheimen covers an area from explore these mountains during the the west country landscape of high, 1800s and many are still following sharp ridged peaks in Hurrungane, the in the footsteps of Slingsby and the most distinctive peaks, to the eastern other pioneers. country landscape of large valleys and mountain lakes. Do you dream about the jerk of the fishing rod when a trout bites? Do you The emerald green Gjende is the dream of escaping to the mountains in queen of the lakes.
    [Show full text]
  • Vassdragsundersøkelser I Øvre Otta, Friluftsliv Og Naturfag
    049' Vassdragsundersøkelser i Øvre Otta, friluftsliv og naturfag Lars Erikstad Gunnar Halvorsen Bjørn P. Kaltenborn Harald Korsmo Sylvia Smith-Meyer Tor K. Spidsø Bjørn Walseng NINA NORSK NSTITUTI" FOR NATURFORSKNNG Vassdragsundersøkelseri Øvre Otta, friluftsliv og naturfag Lars Erikstad Gunnar Halvorsen Bjørn P. Kaltenborn Harald Korsmo SylviaSmith-Meyer Tor K. Spidsø Bjørn Walseng NORSKINSTITUffFORNATURFORSKNING nina utredning 049 Erikstad, L., Halvorsen, G., Kaltenborn, B. P., Korsmo, H., Smith- NINAs publikasjoner Meyer, S., Spidsø,T.K. & Walseng, B. 1993. Vassdragsundersøkelser i Øvre Otta, friluftsliv og naturfag. - NINA Utredning 49: 1-86. NINA utgir seks ulike faste publikasjoner: Oslo,juni 1993 NINA Forskningsrapport ISSN0802-3107 Her publiseres resultater av NINAs eget forskningsarbeid, i den ISBN 82-426-0358-8 hensikt å spre forskningsresultater fra institusjonen til et større publikum. Forskningsrapporter utgis som et alternativ til inter- Klassifisering av publikasjonen: nasjonal publisering, der tidsaspekt, materialets art, målgruppe Vassdragsutbygging og andre tekniske inngrep m.m. gjør dette nødvendig. Hydro-power construction and other technical development NINA Utredning Copyright C): Serien omfatter problemoversikter, kartlegging av kunnskapsni- Stiftelsen Norsk institutt for naturforskning (NINA) vået innen et emne, litteraturstudier, sammenstilling av andres materiale og annet som ikke primært er et resultat av NINAs Publikasjonen kan siteres fritt med kildeangivelse egen forskningsaktivitet. NINA Oppdragsmelding Dette er det minimum av rapportering som N1NA gir til opp- dragsgiver etter fullført forsknings- eller utredningsprosjekt. Opplaget er begrenset. NINA Notat Serien inneholder symposie-referater, korte faglige redegjørel- Redaksjon: ser, statusrapporter, prosjektskisser o.l. i hovedsak rettet mot Erik Framstad NINAs egne ansatte eller kolleger og institusjoner som arbeider NINA, Oslo med tilsvarende emner. Opplaget er begrenset.
    [Show full text]
  • Block Fields in Southern Norway: Significance for the Late Weichselian Ice Sheet
    Block fields in southern Norway: Significance for the Late Weichselian ice sheet ATLE NESJE, SVEIN OLAF DAHL, EINAR ANDA & NORALF RYE Nesje, A., Dahl, S. 0., Anda, E. & Rye, N.: Block fields in southern Norway: Significance for the Late Weichselian ice sheet. Norsk Geologisk Tidsskrift, Vol. 68, pp. 149-169. Oslo 1988. ISSN 0029-196X. The geographical and altitudinal distribution of block fields and trimlines in southern Norway are discussed in relation to the vertical extent of the continental ice sheet during the Late Weichselian glacial maximum. Inferred from these considenitions and formerly presented ice-sheet phases for the last glaciation in southern Norway, a new model on the Late Weichselian ice sheet is presented. This mod el indicates a low-gradient, poly-centred ice sheet during maximum glaciation with the ice divide zone located eiose to the present main watershed. During the deglaciation, the margin of the ice sheet retreated to the coast and fjord areas of western Norway. This induced a backward lowering of the iee-sheet surface, and the culmination zones in areas with low pass-points between eastern and western parts of southem Norway thus migrated E/SE ofthe present main watershed. During maximum glaciation the are as of greatest relative ice thickness were located to the central lowland areas of eastern Norway, to the Trøndelag region, and along the deeper fjords of western Norway. A. Nesje, S. O. Dahl & N. Rye, Department of Geology, Sec. B, University of Bergen, Allegt. 41, 5007 Bergen, Norway. E. Anda, Møre og Romsdal Fylkeskommune, Fylkeshuset, N-6400 Molde, Norway.
    [Show full text]
  • Crossing the Ice: an Iron Age to Medieval Mountain Pass at Lendbreen, Norway Lars Pilø1, Espen Finstad1 & James H
    Antiquity 2020 Vol. 0 (0): 1–18 https://doi.org/10.15184/aqy.2020.2 Research Article Crossing the ice: an Iron Age to medieval mountain pass at Lendbreen, Norway Lars Pilø1, Espen Finstad1 & James H. Barrett2,3,* 1 Department of Cultural Heritage, Innlandet County Council, Norway 2 Department of Archaeology, University of Cambridge, UK 3 Department of Archaeology and Cultural History, NTNU University Museum, Norway * Author for correspondence: ✉ [email protected] Mountain passes have played a key role in past mobil- ity, facilitating transhumance, intra-regional travel and long-distance exchange. Current global warming has revealed an example of such a pass at Lendbreen, Norway. Artefacts exposed by the melting ice indicate usage from c. AD 300–1500, with a peak in activity c. AD 1000 during the Viking Age—a time of increased mobility, political centralisation and grow- ing trade and urbanisation in Northern Europe. Lendbreen provides new information concerning the socio-economic factors that influenced high- elevation travel, and increases our understanding of the role of mountain passes in inter- and intra- regional communication and exchange. Keywords: Scandinavia, Lendbreen, mountain passes, transhumance, Alpine travel, climate change, ice patch archaeology Introduction Like Arctic permafrost (Hollesen et al. 2018), high-elevation ice patches and glaciers are melting due to the warming global climate. Glacial archaeology has developed to rescue artefacts exposed by this process (Dixon et al. 2014), with archaeologists studying melting ice sites in North America, the Alps and Scandinavia (e.g. Hare et al. 2012;Hafner2015;Piløet al. 2018). This research is revealing past trends in high-elevation hunting, transhumance and travel asso- ciated with social, economic and ecological mechanisms.
    [Show full text]
  • RAPPOR T Regional Varsling Av Jordskredfare: Analyse Av Historiske
    Regional varsling av jordskredfare: Analyse av historiske jordskred, flomskred og sørpeskred i Gudbrandsdalen og Ottadalen Nils Arne K. Walberg 44 Graziella Devoli 2014 RAPPORT Regional varsling av jordskredfare: Analyse av historiske jordskred, flomskred og sørpeskred i Gudbrandsdalen og Ottadalen Norges vassdrags- og energidirektorat 2014 Rapport nr. 44 - 2014 Regional varsling av jordskredfare: Analyse av historiske jordskred, flomskred og sørpeskred i Gudbrandsdalen og Ottadalen Utgitt av: Norges vassdrags- og energidirektorat Redaktør: Forfatter: Nils Arne K. Walberg og Graziella Devoli Trykk: NVEs hustrykkeri Opplag: 40 Forsidefoto: Flom og skred gjorde store skader under Pinseflommen 2011. (Foto: A. Taurisano, NVE) ISSN: 1501-2832 ISBN: 978-82-410-0993-8 Sammendrag: Rapporten tar for seg ulike problemstillinger relatert til jordskred, flomskred, utglidninger og sørpeskred i Gudbrandsdalen og Ottadalen. Dette er første rapport i en serie som skal beskrive de områdene i landet som er spesielt utsatt for nevnte skredtyper. Dette området er valgt først på grunn av store skredhendelser med omfattende skader de siste årene. Rapporten er tredelt hvor del 1 omhandler geologiske, hydrologiske og meteorologiske faktorer i området som påvirker skredaktiviteten. Del 2 tar for seg historiske skredhendelser, mens del 3 omhandler tilgjengelig informasjon som kan brukes til å forebygge skred i området, dvs. oversikt over meteorologiske og hydrologiske observasjonsstasjoner, aktsomhetskart og erfaring fra den regionale jordskredfarevarslingen. Emneord:
    [Show full text]
  • Crossing the Ice: an Iron Age to Medieval Mountain Pass at Lendbreen, Norway Lars Pilø1, Espen Finstad1 & James H
    Antiquity 2020 Vol. 94 (374): 437–454 https://doi.org/10.15184/aqy.2020.2 Research Article Crossing the ice: an Iron Age to medieval mountain pass at Lendbreen, Norway Lars Pilø1, Espen Finstad1 & James H. Barrett2,3,* 1 Department of Cultural Heritage, Innlandet County Council, Norway 2 Department of Archaeology, University of Cambridge, UK 3 Department of Archaeology and Cultural History, NTNU University Museum, Norway * Author for correspondence: ✉ [email protected] Mountain passes have played a key role in past mobil- ity, facilitating transhumance, intra-regional travel and long-distance exchange. Current global warming has revealed an example of such a pass at Lendbreen, Norway. Artefacts exposed by the melting ice indicate usage from c. AD 300–1500, with a peak in activity c. AD 1000 during the Viking Age—a time of increased mobility, political centralisation and grow- ing trade and urbanisation in Northern Europe. Lendbreen provides new information concerning the socio-economic factors that influenced high- elevation travel, and increases our understanding of the role of mountain passes in inter- and intra- regional communication and exchange. Keywords: Scandinavia, Lendbreen, mountain passes, transhumance, Alpine travel, climate change, ice patch archaeology Introduction Like Arctic permafrost (Hollesen et al. 2018), high-elevation ice patches and glaciers are melting due to the warming global climate. Glacial archaeology has developed to rescue artefacts exposed by this process (Dixon et al. 2014), with archaeologists studying melting ice sites in North America, the Alps and Scandinavia (e.g. Hare et al. 2012;Hafner2015;Piløet al. 2018). This research is revealing past trends in high-elevation hunting, transhumance and travel asso- ciated with social, economic and ecological mechanisms.
    [Show full text]
  • Weichselian Till Stratigraphy and Ice Movements in Ottadalen, Central South Norway
    Weichselian till stratigraphy and ice movements in Ottadalen, central south Norway JARLE HOLE & OLE FREDRIK BERGERSEN Hole, J. & Bergersen, O. F.: Weichselian til! stratigraphy and ice movements in Ottadalen, central south Norway. Norsk Geologisk Tidsskrift, Vol. 61, pp. 25-33. Oslo 1981. ISSN 0029-196X. Til! stratigraphy and ice movement have been studied in the Skjåk area in the valley Ottadalen. The stratigraphyof one locality, Gubbhågå, is described in detail. Both at Gubbhågå and at other localities in Skjåk waterlaid sediments have been found which are presumed to be the sediments from the end of an interstadial of Mid/Early Weichselian age, most probably Gudbrandsdalen Interstadial. On the basis of fabric analyses the overlying tills are correlated with different phases of ice movements and a four-phase model of these movements during the last lee Age has been established. These results are consistent with others from other parts of Ottadalen and Gudbrandsdalen. Investigations show that the effects of the ice erosion, even in large glacial troughs dose to the main water divide, have been surprisingly little during the last lee Age. Jarle Hole, Jordregisteringsinstituttet, Postboks 115, N-1430 Ås, Norway. Ole Fredrik Bergersen, Geologisk institutt, Avd. B, Universitetet i Bergen, A/Legt. 41, N-5014 Bergen, Norway. Localities where tbere are waterlaid sub-till sedi­ of basal gneisses of Precambrian age. About 8 ments from a Weichselian Interstadial in the km south of the valley, there is a 13 km wide Gudbrandsdal area have been recently described zone stretching east-west with Eocambrian and (e.g. Bergersen & Garnes 1971) (Fig.
    [Show full text]
  • Liste Over Områder I Hedmark Og Oppland
    Supplerende vern - Hedmark og Oppland Navn på område Type natur Utvidelse av eksisterende verneområde Kommune Fylke Folla Stor elveør Alvdal Hedmark Bråtemyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Emtjennsmosen Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Gørrmyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Gåsvikmyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Hagamyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Keisarmyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Korpemyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Kroktjennmyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Langmyra ved Lomtjenn Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Merastmyra Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Nordre Sjelåsætermosen Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Stormyra på Rudskogen Intakt lavlandsmyr i innlandet (lavereliggende) Eidskog Hedmark Sjømyra Intakt lavlandsmyr i innlandet (lavereliggende) Elverum Hedmark Stormyra ved Buvang Intakt lavlandsmyr i innlandet (lavereliggende) Elverum Hedmark Ulvåkjølen-Sundsetra Rikmyr (lavereliggende) Engerdal Hedmark Deplflyin Stor elveør Folldal Hedmark Gjelta Stor elveør Folldal Hedmark Meløyfloen utv. Kroksjøer, flomdammer og meandrerende elveparti. Ja Folldal Hedmark Tangmoen Stor elveør Folldal Hedmark Evja Kroksjøer, flomdammer og meandrerende elveparti. Grue Hedmark
    [Show full text]
  • Årgang 20 Årsskrift Frå Vågå Historielag
    Jutulen 2016 Årgang 20 Årsskrift frå Vågå Historielag 1 Jutulen 2016 Årgang 20 Årsskrift frå Vågå Historielag Redaktør: Knut Raastad Annonser: Dag Aasheim Tilretteleggjing for trykk: Visus, Lom Trykk: Dalegudbrands trykkeri Vågå Historielag vil rette stor takk til alle som har medverka til ut - gjeving av Jutulen 2016. Stor takk til artikkelforfattarane som har kome med interessante, lokalhistoriske artiklar! Vidare går takken til dei som har lånt ut bilete, til annonsørane og ellers andre som har gjeve god hjelp. Framsida: Per Nordrum, gløymd dødsoffer under andre verdskrigen. Sjå artikkel om krigsfangenskap i Tyskland. Foto frå Per Ekre/T. Kleiven. Vågå Historielag har frå Asgeir Brekke fått ei stor samling med glas - plate-negativar etter faren Ansgar Brekke frå Ørsta som var fotograf i Vågå 1937-1943. Biletet viser ektefella Olaug saman med barna Asgeir og Olav. Olaug f. Mølmen frå Lesja var jordmor i Vågå, ho var syster til lærar på Klones Ola Mølmen og Arne Mølmen som var fjøsmester på Klones. Også dei to andre brørne Reidar og Kolbjørn var ei tid lærarar i Vågå. Skanning/avfotografering: Nils Valde. 2 Innhald Erik Holø: Sigurd Nyhus, gründeren på Tessanden side 4 Ivar Viste Flatum: Bokhandelen i Vågå side 12 Ove Turtum: Jernbaneplanar i nær fortid side 19 Trond Eklestuen side 20 Knut Raastad: Christian Feyer og Tronhusfolket side 24 Arve Danielsen: Sørem – skysstasjon og pensjonat side 30 Tone Wisting: Vågå prestegjeld revolusjoneres side 34 Kvie i Valdres side 38 Gunnar Ottosen: Distriktsleger i Vågå side 40 Bjørn Brandt: Minnesteinen
    [Show full text]