IGCP Board; 10th session; Report of the ... - unesdoc - Unesco

and European continents are in progress. In
North America the correlation schemes for different
regions have been elaborated. The correlation
studies between North America and Canada
are in progress. The results achieved have
been used for the correlation of North-American
glaciations with those of Europe. It has been
proved that the stratigraphy of the last glaciation
in North America can be correlated in most
aspects with that in Northern Europe, especially
in Scandinavia. However, a substantial difference
in time exists between the glaciations of
America and Europe in the time-span of Lower
and Upper Pleistocene. The correlation studies
based on the palaeomagnetic and radiometric
dating are in progress.
The correlation of continental- and marine deposits
was focused on a comparison of the Quaternary
stratigraphy in the North-European glaciated
area with that in the deep-sea sediments.
This correlation is based, besides geological
observation, mainly on radiometric and palaeomagnetic
dating and palynological studies. For
the lower part of the Pleistocene the correlation
is based on the comparison of climatic changes
as reflected in the palaeontological content of
deposits, palaeopedological development and
palaeomagnetic properties. A corresponding
number of climatic oscillations following the
Brunhes-Matuyama boundary has been proved
both in marine and continental conditions. In the
shelf areas of North-east Europe, the relation
of glaciations to the marine transgressions also
was studied.
The geophysical studies were aimed at clarifying
the relation of climatic changes to the changes of
palaeomagnetic field, and also at the identification
of the geophysical factors influencing glaciations.
Activities planned. The final session will be held
in Paris, 9-10 September 1982, and the final
report will be prepared in 1982.
No. 25 STRATIGRAPHIC CORRELATION OF
THE TETHYS-PARATETHYS NEOGENE
J. Seneg, Geological Institute, Slovak Academy
of Sciences, Ddbravaská cesta, 88625 Bratislava,
Czechoslovakia.
Description. Time correlation of the Tethys and
Paratethys Neogene from the Iberian Peninsula
to the South Ural and Pakistan. Connections between
the Atlantic and Indo-Pacific areas (Europe,
North Africa, and West Asia).
Summary of activities. The second stage of the
Project (1979-1982) involves the necessary
corrections and input of new data, followed by
an evaluation and more detailed correlation of
450 Neogene basins of these areas.
A field trip meeting was held in 1981 on the prob­
18
lems of the Neogene between the brackish and
marine sediments. In 1981 the Project workers'
attention was concentrated on the extensive publication
activities for the compilation of the final
report. The manuscripts of the Project's final
reports will be ready for printing by the end of
1981 or, at the latest, in the first months of
1982.
The results obtained by this Project to a considerable
extent have changed the old views on
chronostratigraphy of all events for the last 25 Ma,
and provide new bases for palaeogeographicpalinspastic
and geodynamical interpretations.
Activities planned. (1) The final version of "Time
correlation Tables" will be printed in Austria and
a shorter final report on the solved first-order
topics of the Project will be published in "Earth-
Science Reviews". (2) The Project's final meeting
will be convened in Smolenice Castle in
Czechoslovakia. On this occasion, a large discussion
is foreseen in the programme, covering
the problems of Neogene stratigraphy, not only
in the Mediterranean region, but also in other
Neogene areas throughout the world.
No. 27 THE CALEDONIDE OROGEN
B.A. Sturt, Geological Institute, University of
Bergen, Norway.
Description. This Project, in its broadest context,
is concerned with late Precambrian and
early Palaeozoic through Devonian evolution of
the Caledonide Orogen. It concerns all rock
units that have been influenced by orogenic processes
during this time interval.
Summary of activities. The 7th International
Working Group Meeting of the Project "Caledonide
Orogen", took place in Uppsala, Sweden
from 26-27 August 1981, which was attended by
scientists from 15 countries. The national reports
were circulated and the future plans were elaborated.
Belgium. Several working groups were established
in November 1980.
Canada. All project compilation maps have been
completed, and consist of Metamorphism (1 map),
Stratigraphy-Sedimentology-Fauna (10 maps),
Plutonics/Volcanics (1 map), Deformation (2
maps), and Gravity and Magnetics (2 maps).
Czechoslovakia. A start has been made on defining
the effects of Caledonian deformation and
metamorphism throughout the Bohemian Massif.
Mapping in the north-eastern region has enabled
us to distinguish a fold phase between the Early
and the Late Ordovician.
Denmark. Systematic mapping (1:5, 000, 000) in
East Greenland has been concentrated in the northern
part of the fold belt between 79-80°N latitudes.