inscription
Portail d'information géographique

Résultats de la recherche (57 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The Precambrian in the central part of the Iberian Massif
  • India and Madagascar in Gondwanaland based on matching Precambrian lineaments
  • Geological processes and atmospheric evolution in the Precambrian in Evolution of the Earth's crust.
  • Late Precambrian subduction and collision in the Al-Amar Idsas region, Arabian shield, Kingdom of Saudi Arabia
  • Palaeological evidence indicates that the rotation rate of the Earth during the late Precambrian was 2-2.5 times faster than now. Typically high rotation rate in a fluid system reduces the characteristic size of dynamic features, their associated
  • transport processes and the overall intensity of the motions. The climatic consequences of the high rotation rate during the Precambrian are outlined. In particular, it is hypothesised that variations in the rotation rate imposed an important, and possibly
  • dominant, effect on the genesis and termination of the Precambrian ice age. Other possible implications of the high rotation rate to oceanography, life forms and geology are briefly noted.
  • Recognition of common Precambrian polar wandering reveals a conflict with plate tectonics
  • ... The results of the published palaeomagnetic analyses for North America, Africa and Australia strongly suggest that the cratons which comprise the individual continents retained their relationships for much of Precambrian time
  • Climatic oscillations during the Precambrian era
  • Late Precambrian-Early Paleozoïc geological relationship between Tasmania and northern Victoria Land in Gondwana Five. Selected papers and abstracts of papers.
  • Volcanogenic charts in the late precambrian conception group, Avalon Peninsala, Newfoundland
  • Chronotectonic boundaries for Precambrian time divisions in South America
  • The Kimberley Plateau, Western Australia. A precambrian erosion surface
  • Geochronological correlations of Precambrian and Paleozoïc orogens in New-Zealand, Mary Byrd Land (West Antarctica), Northern Victoria Land (East Antarctica) and Tasmania in Gondwana Five. Selected papers and abstracts of papers.
  • Experimental frost shattering of some precambrian rocks, Finland
  • Study on the cave passages in Precambrian Bhander limestone of the Vindhyan supergroup, India
  • Sedimentation and water escape structures in some late Precambrian shallow marine sandstones from Finnmark, North Norway
  • Holocene carbonate precipitates on Precambrian bedrock in the High Arctic : age and potential for palaeoclimatic information
  • Evidence for late Precambrian plate tectonics in West Africa
  • A model of till emplacement based on the catastrophic alteration of hydrological conditions across the Precambrian/Paleozoic boundary is proposed. This model accords closely with the available field evidence. It highlights the significance
  • The gross morphology of the Precambrian basement of southern Sweden is analysed. The area has a donned form and emerges from under a cover of Palaeozoic rocks in the north and east and Mesozoic rocks in the south and west. A map of erosion surfaces
  • Oldlands are complex surfaces of low relief preserved on Precambrian shields and cratons and Paleozoic massifs. Interpretation of their character and age is difficult, but as a consequence of its particular location and of conceptual developments