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

Equator: Different areas under study, especially
in the western Cordillera.
Colombia: (l) Granitic massif of El Garzón;
(2) adamellitic stock of El Buey; (3) rocks of
the Combia Formation.
Activities planned. The activities planned for
1982 include: (l) the continuation of radiometric
and isotopic analysis in interested laboratories,
with emphasis on samples from new areas
of study; (2) research in several areas of
the Andean Chain; (3) organization of (a) a
symposium on the Magmatic Evolution of the
Andes and a business meeting of the Project
Working Group, both to be held on the occasion
of the 5th Latin-American Congress of Geology
in Buenos Aires, Argentina, October 1982; and
(b) a business meeting, and also an informal
session of the Project Working Group, both to
take place during the 3rd Chilean Geological
Congress, Concepción, Chile, November 1982.
In addition, a publication on the Geotectonic
Evolution of South America will be prepared.
No. 124 NORTH-WEST EUROPEAN
TERTIARY BASIN
R. Vinken, Niedersâchsisches Landesamt ftir
Bodenforschung, P.O. Box 51 01 53, D-3000
Hanover 51, FRG.
Description. Investigation of a marine sedimentary
basin by interdisciplinary cooperation and
correlation of all available data with the aim of
reconstructing the evolution of the North-west
European Tertiary Basin. Results will improve
water supply from Upper Tertiary and storage
of waste liquids and will have implications for
gas and oil exploration in the North Sea Basin.
This case study also is planned to result in the
recognition of the general pattern of epicontinental
basins.
Summary of activities. The 6th Plenary Meeting
of the Project was convened at Skive, Denmark,
13-16 May 1981. More than 50 members
of the Project from all the participating countries
attended the meeting and discussed the contents
of the Project's final report. On this occasion
workshops of the six Project subgroups
were held. The Tertiary localities in Jutland
were visited during a one-day excursion. In
addition, another workshop of the Subgroup
"Palynology" was organized by the Palaeogene
Pollen Group at Hanover from 19-20 November
1981.
The contents of the final report are as follows:
Volume I
(1) Lithostratigraphical schemes of about 30
investigated areas in the whole basin with special
columns for the descriptions of lithology,
40
environment, radiometric age etc. (re-edition
finished, copies have been sent to all cooperators).
(2) Description of the occurrence of each fossil
group investigated (up to 12) for each area; description
of the uni-biostratigraphical state of
knowledge.
(3) Combination of the results of all fossil groups
investigated in each area; multi-biostratigraphical
scheme for each area.
(4) Description of the zonation for each fossil
group investigated, valid for the whole basin; unibiostratigraphical
interregional scheme for the
whole basin.
(5) Correlation of the biostratigraphical results
of all fossil groups investigated in all areas;
multi-biostratigraphical interregional scheme for
the whole basin; base of the new stages for the
Tertiary of the North-west European Basin to be
defined.
Volume II
(6) Lithofacies sections (vertical scale 1:10,000,
horizontal scale 1:250, 000) from all parts of the
basin, extending from the margins to the centre.
(7) Palaeogeographical maps for 9 selected time
intervals at a scale of 1:1, 500, 000.
The preparation of the final report was the main
task of the Project's six working groups during
1981.
Activities planned. The 7th and final Plenary
Meeting will take place in Frankfurt, FRG, from
13-15 May 1982. The main topics of the meeting
will be: 1. the presentation of the main results
of the Project by the chairmen of the 6 subgroups
and by specialists of the different fossil groups;
and 2. the compilation of the final report.
No. 129 LATERITIZATION PROCESSES
Director General, Geological Survey of India,
27, Jawaharlal Nehru Road, Calcutta-700016,
India.
Description. This Project includes an integrated
study of all aspects of lateritic formations, including
their constitution, composition, control,
and distribution in time and space. An understanding
of the processes in question is essential
to correlate palaeoenvironments on a global scale
and to serve as a basis for prospecting for deposits
of Al, Ti, Ni, Cr, etc., which are concentrated
preferentially in lateritic formations as
well as for base and precious-metal deposits
hidden beneath deep lateritic cover.
Summary of activities. During the twelve months
ending November, 1981, work on the Project continued
intermittently in Australia, FRG, Hungary,