STRANDFORSKYVNING

Rissa. Kvartærgeologisk kart 1522 II - M 1 : 50 000. Beskrivelse

SKRIFTER
82
Publikasjonstype
Utgivelsesår
1987
Summary
The superficial deposits occuring within the map-area are described and classified according to their genesis. In the mountains a discontinuous or thin cover of till dominates with peat in the depressions. In the lowland areas glaciomarine sediments were deposited at a sea-level situated c. 155 m above the present one. The deglaciation of this area took place during the Bølling and Allerød chronozones. During the Younger Dryas the glaciers andvanced to the Tautra Moraines, situated some 20 km to the cast of this map-area. This led to an intense calving of the glaciers in the Trondheimsfjord. Drifting icebergs caused a marked increase in the content of coarse-grained rock fragments in the glaciomarine sediments. During the shoreline displacement the sediments below the upper marine limits were influenced by fluvial erosion and slides. Short account are given on the potential for different utilization of the mapped superficial deposits.
Forfattere
Reite, Arne J.
Kommune
ØRLAND
INDRE FOSEN
ORKLAND
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Frosta 1622 II. Beskrivelse av kvartærgeologisk kart - M 1:50 000 (med fargetrykt kart).

SKRIFTER
75
Publikasjonstype
Utgivelsesår
1986
Summary
The superficial deposits occuring within the map-area are described and classified according to their genesis. In the mountains a discontinuous or thin cover of till dominates with peat in the depressions. In the lowland areas glaciomarine sediments were deposited at a sea-level situated c. 180 m above the present one. In Frosta and Skatval these sediments are overlain by till, deposited by a glacial advance during early Younger Dryas, reaching just to the west of the map-area. Marginal moraines from a late Younger Dryas glacial advance can be traced more or less continuously from Hegra in Stjørdal toowards Hoklingen and Alstahaug. During the shoreline displacement the sediments below the upper marine limit were influenced by fluvial erosion and slides. Short accounts are given on the potential for different utilization of the mapped superficial deposits.
Forfattere
Reite, Arne J.
Kommune
INDRE FOSEN
INDERØY
FROSTA
LEVANGER
STJØRDAL
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Stjørdal 1621 I - M 1:50 000. Beskrivelse til kvartærgeologisk kart (med fargetrykt kart).

SKRIFTER
72
Publikasjonstype
Utgivelsesår
1986
Summary
The superficial deposits occurring within the map-area are described and classified according to their genesis. In the mountains till and organic deposits dominate. In the lowland areas glaciofluvial and glaciomarine sediments were deposited at a sea-level situated c. 180 m above the present one. During the shoreline displacement these sediments were strongly influenced by fluvial erosion and slides. The ice recession vas interrupted by a glacial advance during the first half of the Younger Dryas glacial advance ca be traced less continuously from the lakes Store Dragstsjøen - Foldsjøen towards Frigården, Lånke, and Hegra in the Stjørdal valley. Radiocarbon datings from Frosta, Levanger and Verdal indicate that these marginal deposits were formed during late Younger Dryas. Short accounts are given on the potential for different utilization of the superficial deposits.
Forfattere
Reite, Arne J.
Kommune
STJØRDAL
MALVIK
SELBU
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Støren. Beskrivelse til kvartærgeologisk kart 1621 III - M 1 : 50 000 (med fargetrykt kart).

SKRIFTER
65
Publikasjonstype
Utgivelsesår
1985
Summary
The superficial deposits occurring within the map-area are described and classified according to their genesis. In the mountains, till and organic deposits dominate. In the lowland areas glaciofluvial and glaciomarine sediments were deposited at a sea-level situated c. 175 m above the present one. During the shoreline displacement these sediments were strongly influenced by fluvial erosion and slides. The ice recession was interrupted by a glacial advance which took place dUring the first half of the Younger Dryas Chronozone, reaching just to the north of the map-area. Another glacial advance can be traced from the southwestern part of the map towards Reinsfjell and possibly to the western part of the lake Selbusjøen. These marginal moraines were deposited during late Younger Dryas. Short accounts are given on the potential for different utilization of the superficial deposits.
Forfattere
Reite, Arne J.
Kommune
TRONDHEIM
MELHUS
MIDTRE GAULDAL
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Hølonda. Beskrivelse til kvartærgeologisk kart 1521 II - M 1:50 000 (med fargetrykt kart)

SKRIFTER
54
Publikasjonstype
Utgivelsesår
1984
Summary
The superficial deposits within the map-sheet Hølonda were formed during the Late Weichselian and Holocene. At the time of deglaciation the sea-level was situated ca. 175 m above the present one, and fine-grained marine sediments were deposited distal to ice-marginal glaciofluvial deposits. In the central part of the map area the superficial deposits are dominated by till and glaciofluvial sediments. In the mountainous areas the till cover is generally thin and discontinous. The ice recession occurred during the Allerød (12 000-11 000 years B.P.), but remnants of glacier may still have remained in the central part of Hølonda during an early Younger Dryas glacier advance, taking place 10 800-10 500 years B.P. Short accounts are given of geological processes during the Late Weichselian and Holocene. The potential for different utilization of the superficial deposits is also briefly discussed.
Forfattere
Reite, Arne J.
Kommune
ORKLAND
SKAUN
MELHUS
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Quaternary geology of Jæren and adjacent areas, southwestern Norway

NGU BULLETIN
411
Quaternary geology of Jæren and adjacent areas, southwestern Norway
Bjørn G. Andersen, Ole P. Wangen, Svein R. Østmo
Page(s): 1-55
Publikasjonstype
Utgivelsesår
1987
Summary
Forkortet. Jæren in southwestern Norway is covered with a sheet of Late Weichselian glacial deposits which in places overlies rather thick units of older glacial and marine deposit. Younger Late Weichselian and Holocene marine sediments, eolian sand and peat cover parts of the Late Weichselian sheet. The distribu- tion of the surficial deposits was mapped, and numerous analyses of grain size, fabric, clastic roundness and pebble counts were used to characterize the depositional environments. On the basis of lithostratigraphical, bio- stratigraphical and cronostratigraphical studies, including datings by differ- ent methods, a stratigraphical model is presented for the Late Weichselian and older deposits. The model is preliminary, since the dating and correlation of deposits older than 25 000-30 000 years B.P. remain uncertain. All units in the model are mentioned in stratigraphical order.
Forfattere
Andersen, Bjørn G.
Wangen, Ole P.
Østmo, Svein R.
Kommune
STAVANGER
RANDABERG
SOLA
SANDNES
GJESDAL
KLEPP
TIME
BJERKREIM
EIGERSUND
Fylke
ROGALAND
Tilgjengelig
NGU-biblioteket

Glacial geology of Middle and Inner Nordfjord, western Norway.

NGU BULLETIN
408
Glacial geology of Middle and Inner Nordfjord, western Norway.
Olav W. Fareth
Page(s): 1-55
Publikasjonstype
Utgivelsesår
1987
Summary
Marginal moraines have been mapped and the course of deglaciation reconstructed
supported by studies on terraces and shorelines and by radiocarbon datings.
The following glacial events have been recognised:
1. Davik stadial, age unknown, glacier front somewhere in the outher fjord area
2. Vardehaug stadial, of early Younger Dryas age (10.700-10.600 B.P.), glacier
front at Naustdal, Eidsfjorden 3. No stadial, later half of Younger Dryas,
glacier front at Nor (Nordfjordeid), Anda and Rygg. The Nor stadial is by far
the most marked late glacier event in Nordfjord, both with regard to the thick-
ness of the deposits as well as to their distribution and continuity, and is
correlated with the main Younger Dryas readvance in Norway. This stadial is
completely reconstructed, and a paleogeographic map is presented.
4. Vinsrygg stadial, early Pre-Boreal, characterized by active glaciers,
glacier front in the fjord outside Stryn. 5. Eide stadial, of Pre-Boreal age
(> 9400 years B.P.), front of valley glaciers near the heads of the innermost
fjord branches. Local moraines, primarily in front of cirques, are numerous
and frequently reflected several stadials, although Nor moraines dominate.
The Nor raised marine shoreline is a prominent feature in greater parts of the
area, and an isobase map for Nordfjord and Sunnmøre is presented.
The Younger Dryas lowering of snow lines and glaciation limits is estimated at
approximately 450 m
Forfattere
Fareth, Olav W.
Kommune
VOLDA
VANYLVEN
ØRSTA
STRANDA
BREMANGER
STAD
GLOPPEN
STRYN
SUNNFJORD
Fylke
VESTLAND
MØRE OG ROMSDAL
Tilgjengelig
NGU-biblioteket

Informasjonsmateriell om landhevning og strandforskyvning ved helleristningen "Bølareinen", Valøya, Snåsavatnet.

NGU-RAPPORT
90.147
Publikasjonstype
Utgivelsesår
1990
ISSN
0800-3416
Summary
På Sørsiden av Snåsavatnet ligger den kjente helleristningslokaliteten "Bølareinen". Fra lokalt hold ble det nedsatt en arbeidsgruppe for å skaffe bedre informasjon om ristningene og forholdene på stedet helt fra tidlig steinalder og fram til idag. Her er landhevningen etter siste istid et sentralt tema. Det er reist informasjonstavler på stedet. Arbeidsgruppen har i tillegg diskutert NGUs forslag om å lage en borsjyre. En lang rekke institusjoner og lag har deltatt i arbeidet. Erfaringene fra et slikt tverrfaglig prosjekt vil være nyttig for lignende tiltak ved flere av våre fornminner, naturvern- objekter o.l. Rapporten inneholder kun NGUs andel av prosjektet (tema landhevning).
Forfattere
Sveian, Harald
Kommune
STEINKJER
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

Informasjonsplakater om kvartærgeologiske tema. Hegstadmarka natur- og kultursti ved Stiklestad, Verdal kommune.

NGU-RAPPORT
91.240
Publikasjonstype
Utgivelsesår
1992
ISSN
0800-3416
Summary
Rapporten omhandler NGUs 5 (av i alt ca. 30) forslag til informasjonsplakater for en natur- og kultursti i Hegstadmarka like øst for Stiklestad.
Arbeidstitlene er:
A: Gammel fjordbunn. Landhevning (hovedplakat)
B: Kilde (oppkomme). Grunnvann i jord
C. Bjønndalen. Ravine/bekkedal
D: Verdalsraset i 1893
E: Strandlinjer
Målgrupper er både turisme/reiseliv (via Stiklestad Nasjonale Kulturhus og skoler/undervisning. Dette er tillagt vekt ved utforminga av plakatenes illustrasjoner og tekster.
Forfattere
Sveian, Harald
Kommune
VERDAL
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket

NGU-bidrag til markeringene av 100-årsminnet for Verdalsraset 1893, Verdal kommune, Nord-Trøndelag

NGU-RAPPORT
94.045
Publikasjonstype
Utgivelsesår
1994
ISSN
0800-3416
Summary
Verdal kommune arrangerte i 1993 en omfattende markering av 100-års minnet
for Verdalsraset, Norges største kjente kvikkleireskred, der 116 mennesker
omkom i 1893. Minnemarkeringene var i første rekke fokusert på den ufattelige
tragedien, redningsarbeidet, ødeleggelsene og de menneskelige lidelsene.
Likevel var geologi, geoteknikk og årsaksforhold relativt sentrale tema, både
i TV, radio, aviser, bygdebok, minneutstilling og foredrag.
Denne rapporten omfatter en kort oversikt over NGUs totale engasjement i 100-
årsmarkeringene, samt lay-out skisser, plakattekster og NGU-produserte illu-
strasjoner til en geofaglig seksjon i den store minneutstillingen "Verdalsraset
100 år" i Stiklestad Nasjonale Kulturhus.
Utstillingen vil også være åpen i 1994.
Forfattere
Sveian, Harald
Kommune
VERDAL
Fylke
TRØNDELAG
Tilgjengelig
NGU-biblioteket