Analyse spatiale ; Changement global ; Hydrologie ; Niveau marin ; Terrasse ; Terrasse marine
Spatial pattern analysis of marineterrace elevations from 40-30 thousand years B.P. was used to reconstruct sea level and geoid parameters during that time.
Aminostratigraphie ; Chili ; Niveau marin ; Quaternaire marin ; Stratigraphie ; Terrasse marine
Mollusk aminostratigraphy of Quaternary marineterrace sediments at Coquimbo Bay, Chile, combined with recently available electron spin resonance (ESR) ages, necessitates revision of the northern Chilean relative sea-level and terrace chronology
. Terrace reoccupation during successive high sea-level stands is inferred on the basis of litho- and aminostratigraphically defined unconformities in terrace sediments.
Marineterrace flights resulting from the interaction of Quaternary glacio-eustatic fluctuations and tectonic uplift are a typical feature of the Tyrrhenian coast of Calabria in Southern Italy; in particular a terrace flight with four orders
of terraces is evident in the Diamante area. The aim of this study was to define the type of tectonics that acted in the area and to determine its effects, based on morphologic, morphotectonic, sedimentologic and stratigraphic evidence.
During February and March 1982, field work was undertaken along the Gulf of Aden coast of Somalia, between Galweda and Elayu. Marineterraces were examined in the field and later were mapped using aerial photographs. Corals were collected from
marineterraces for uranium-series dating. This paper reports on the results of this research.
The purposes of this paper are to describe soil development on marineterraces in two areas, Cape Blanco and Cape Arago, and to assess the utility of soils in relative dating and correlating marineterraces sequences in coastal Oregon.
Coseismic uplift of Holocene marineterraces in the Pakarae River area, eastern North Island, New Zealand
Bathymétrie ; Datation C 14 ; Faille ; Géographie de l'Océanie ; Holocène ; Mouvement vertical ; North Island ; Nouvelle-Zélande ; Quaternaire marin ; Tectonique ; Terrasse marine
This paper presents the first detailed terrace description and evaluation of the timing and deformation pattern for each coseismic event. The AA. describe the terrace morphology and terrace deposits at three localities in region C (determined by Ota
et al., 1983) and report ages from six of the seven terraces at Pakarae River and from several levels at Puatai Beach and Waihau Bay.
Sr-isotope record of Quaternary marineterraces on the California coast and off Hawaii
California ; Geochemistry ; Hawaii ; Isotope ; Marine quaternary ; Marineterrace ; Paleo-environment ; Sea level ; Stratigraphy ; United States
California ; Etats-Unis ; Géochimie ; Hawaii ; Isotope ; Niveau marin ; Paléo-environnement ; Quaternaire marin ; Stratigraphie ; Terrasse marine
The AA. use Sr-isotope stratigraphy to constrain relative and absolute ages of Quaternary marineterraces formed during interglacial periods in southern California. They test for the presence of a glacial-interglacial oscillatory signal superimposed
Development of a Late Quaternary marineterraced landscape during on-going tectonic contraction, Crescent City, coastal plain, California
California ; Coastal environment ; Coastal plain ; Fault ; Marine quaternary ; Marineterrace ; Pedogenesis ; Pleistocene ; Tectonics ; United States of America ; Vertical movement
The aim of this paper is to use marineterrace age and distribution to identify the pattern of the late Quaternary deformation in the Crescent City coastal plain. The AA. determined how many marineterraces make up the Crescent City coastal plain
, characterized the soils developed on their surfaces, investigated the cover stratigraphy and the buried bedrock topography underlying the terraces, and estimated terrace ages.
Evaluating Quaternary erosional dynamics at uplifting coastal areas by modelling marineterrace formation
Coastal environment ; Eustatism ; Geomorphogenesis ; Kenya ; Marine quaternary ; Marineterrace ; Model ; Sea level
Eustatisme ; Géomorphogenèse ; Kenya ; Littoral ; Modèle ; Niveau marin ; Quaternaire marin ; Terrasse marine
Utilisation du modèle conceptuel MARIN afin de simuler le façonnement des terrasses marines, qui est essentiellement un processus d'érosion contrôlé par les changements du niveau marin et les vitesses de soulèvement des littoraux. A titre d'exemple
, en prenant en compte les fluctuations eustatiques et un taux de soulèvement moyen, reconstitution de la genèse d'un étagement de terrasses marines observables à Malindi, au Kenya.
Quaternary marineterraces on the southern side of the Gibraltar strait and on the northen Atlantic Coast of Marocco : lithostratigraphy, provenance and drainage patterns.
New lithostratigraphic data have been collected from stratigraphic sections in Quaternary marineterraces located along the northen Atlantic and southern Gibraltar Strait coasts (Marocco). Petrographic analyses of detrital modes of the arenites
Asian part of Russia ; Biostratigraphy ; Coastal environment ; Eastern Siberia ; Island ; Marineterrace ; Quaternary ; Sakhalin ; Sea level ; Sedimentology ; Terrace ; Vertical movement
Biostratigraphie ; Ile ; Littoral ; Mouvement vertical ; Niveau marin ; Quaternaire ; Russie d'Asie ; Sahalin ; Sibir' Vostočnaâ ; Sédimentologie ; Terrasse ; Terrasse marine
Biostratigraphical and sedimentological studies of deposits of terraces on Western Sakhalin Island have shown that they were all marine in origin. The upper complex of terraces formed during a period of slow tectonic uplift in this area to 120 m
above modern sea level. The lower complex of terraces may have formed in response to sea level oscillations without any influence of tectonic uplift.
Calabria ; Italie ; Littoral ; Mouvement vertical ; Niveau marin ; Néotectonique ; Pléistocène ; Quaternaire ; Terrasse marine
A series of 26 Quaternary shorelines, stepped between present sea level and 556 m , are studied. They are part of the flight of marineterraces of the Aspromonte region. In a region where tectonics is particularly active (earthquakes occur
Datation des terrasses marines du Maroc et de l'Espagne par C 14, thermoluminescence et Th/U. Présentation d'un modèle géologique pour les terrasses marines et interprétation concernant les implications géomorphodynamiques et le paléoenvironnement.
A flight of Quaternary marineterraces provides a framework for quantitative analysis of abandoned sea cliff modification as a function of time. The relationships are weaker than for stream terraces and fault scarps in unconsolidated materials
On the coast of Tosa Bay, Southwestern Japan, there is a wide coastal terrace which was formed in the Last Interglacial and has been uplifted to altitudes of 150-200 m above the present sea level by crustal movement. Many valleys dissect the terrace
surface with upwardly convex profiles in downstream reaches. Numerical simulations were conducted to investigate the development of longitudinal profiles of the valleys under the influence of baselevel change and marine erosion. The profiles obtained from
On the scale of 100 000 years, glacially controlled eustatic fluctuations of sea-level are the dominant factors in generating coastal terraces. If each interglacial sea level returned to within a few meters of present level, flights of terraces
represent the cumulative tectonic uplift during the oscillatory glacial cycles. On this time, scale a uniform average uplift rate gives good predictions of terrace ages.
The A. presents the results of pollen analysis of the cover beds of a marineterrace at the Ohawe Beach Section. The site provides a long vegetational and climatic history covering one climatic cycle from periods previously undocumented for New
Baja California Sur ; Fault ; Marine quaternary ; Marineterrace ; Mexico ; Plate tectonics ; Sea level ; Seismic hazard ; Vertical movement
Baja California Sur ; Faille ; Mexique ; Mouvement vertical ; Niveau marin ; Quaternaire marin ; Risque sismique ; Tectonique de plaques ; Terrasse marine
the rate of uplift, the AA. examine the coastal uplift of the Loreto basin indicated by the altitudinal distribution of marineterraces. Evidence of Quaternary movement on the Loreto fault consists of morphologically young fault scarps and surfaces
such as fluvial terraces that are displaced by recurrent faulting.