Zur tektonischen Bearbeitung von Bohrkernen. (Tectonical treatment of drill cores)
Methodological references are given concerning the collection, documentation and evaluation of structural tectonic elements of cores. This is followed by the discussion of the most important results of investigation which are not only of regional
Utilise les données de température moyennes mensuelles, de durée d'ensoleillement et de hauteur d'eau, au mois d'août (de 1901 à 1975), pour le Japon et la Corée.
Five widespread tephra layers are found in late Quaternary sediments (0130,000yr B.P.) of the Eastern Mediterranean Sea. These layers have been correlated among abyssal cores and to their respective terrestrial sources by electron-probe
microanalysis of glass and pumice shards. Major element variations are sufficient to discriminate unambiguously between the five major layers. Oxygen isotope stratigraphy in one of the cores studied was used to data four of the five layers. Two of the widespread
layers are derived from explosive eruptions of the Santorini volcanic complex: the Minoan Ash (3370yr B.P.) and the Acrotiri Ignimbrite (18,000yr B.P.). An additional layer, found in one core only, is most likely correlated to the Middle Pumice Series
Fossil diatom assemblages from a 12-m core from Kirchner Marsh were compared with modern surface assemblages from 159Minnesota and Labrador lakes using cluster analysis. The deepest levels of the core (spruce pollen zone 13,000 to 10,200yr BP
The quantitative distribution of planktonic foraminifera, pteropods, and coccolithophorids, as well as oxygen-isotope variations were analyzed in four deep-sea cores from the Gulf of Aqaba (Elat) and the northernmost Red Sea. The core record covers
Wastage of the Klutlan ice-cored moraines, Yukon Territory, Canada
A series of ice-cored Neoglacial moraines at the terminus of the Klutlan Glacier covers an area of 90 km. Studies were made to determine empirically how long ice persisted in the Klutlan moraines and to develop models that can accurately predict
Various techniques are used to detect the possible distortion of the tide by the presence of an ice cover at some gauging sites in the Canadian Arctic. Some stations are apparently unaffected, while those around the periphery of Amundsen Gulf
pressure drop of only 1mb, but brought up to 20mm of precipitation in the coastal region of the Netherlands. The analysis suggests that the disturbance was a warm-core system driven by latent heat release and triggered by forced lifting along the coastline
of basaltic columns. This point process is approximated by a hard-core process known from the statistical literature. Simple rules for jointing the points produce polygonal patterns as observed in nature.
at its terminus a series of at least 7 surge-related Neoglacial ice-cored moraines. Lithologic characteristics of the Klutlan moraines suggest that they have resulted principally from the surging of the tributary Nesham Glacier, which periodically injects
Geochemical and paleontological studies of surface sediment to a serie of lakes on progressively older moraines provide baseline information for comparing successive levels of lake sediment cores from older moraines. Results indicate that the time
. There are still problems when correlation is attempted from west to east coast sequences in Scotland, and correlation is sought with the published North Sea records. Such problems require fuller, more detailed study of continuous cores for ostracod data
a preliminary basis for subdivision of the Quaternary in deep-sea sediments. The magnetic-reversal, oxygen-isotope, and calcite-dissolution/coarse-fraction scales have been correlated by determination on the same core materials, and absolute dates applied by K
/Ar or C dating of materials in known positions on one or another of these scales. FADs and LADs have been determined in cores for which either a magnetic-reversal, oxygen-isotope, or calcite-dissolution/coarse-fraction scale has also been available
The flora and vegetation of six ice-cored moraines of the Klutlan Glacier were analyzed in 65 plots by European plant-sociological techniques. The age of each plot was estimated from annual growth rings of shrubs or trees in the plots. Nine major
cores in the equatorial Pacific and Gulf of Mexico were analyzed by neutron activation and/or electron microprobe. Chemical data from this study are used to correlate the Y-8 ash layer of the Gulf of Mexico with the Los Chocoyos Ash. The recognition
Modern pollen assemblages have been studied from surficial lake muds and moss polsters collected from five vegetated ice-cored moraines of the Klutlan Glacier. The youngest vegetated moraine (K-II) is characterized by high pollen values for Salix
A quantitative study on faunal density and faunal diversity was carried out on benthic foraminifers from 15 samples of two eastern Mediterranean deep-sea cores. Samples were taken beneath, within, and above three distinctive levels well correlatable
yr old) have a multiple-generation spruce forest, yet melting of buried ice still locally forms young lakes. Cores of organic sediment from the oldest lakes contain a stratigraphic sequence of pollen, diatoms, and cladocerans that record the early
, acoustically transparent layer overlying a strong reflector, and (III) relatively thick sediment with internal acoustic reflectors. These profiles, in conjunction with sediment cores from the area, reveal that varved glacial-lacustrine sediment settled out
le relief originel à la périphérie de l'océan. L'analyse de la structure insiste sur la différence entre croûte océanique et croûte continentale, ce qui implique des processus de formation spécifiques. La séismicité révèle des phénomènes de