Accession Number : AD0667078

Title :   STRUCTURE OF THE EARTH'S CRUST IN THE ARCTIC.

Descriptive Note : Technical translation,

Corporate Author : AERONAUTICAL CHART AND INFORMATION CENTER ST LOUIS MO LINGUISTIC SECTION

Personal Author(s) : Demenitskaya,R. M.

Report Date : FEB 1968

Pagination or Media Count : 15

Abstract : This translation is a study of the crustal structure in the Arctic, based on seismic, aeromagnetic and bathymetric observations in recent years. Seismic evidence indicates an extensive development of a two layered structure of sedimentary complex and an abrupt change of the thickness of deposits in the Arctic basin. This suggests recent intensive tectonic movements. A new map of submarine ridge axis is presented, showing the position of a new ridge and other possible rises of the Arctic Ocean floor. A map of crustal thickness in the Arctic is presented. The earth's crust in the Arctic is predominantly oceanic and intermediate and is characterized by considerable change of thickness. Great variation in crustal thickness and that of a sedimentary complex, irregular bottom topography, recently discovered and supposed rises on the ocean floor, different physical fields -- all this suggests a distinctive block structure of the earth's crust in the Arctic. (Author)

Descriptors :   (*STRUCTURAL GEOLOGY, ARCTIC REGIONS), SEISMIC WAVES, ECHO RANGING, THICKNESS, OCEAN BOTTOM TOPOGRAPHY, SEDIMENTARY ROCK, MAGNETIC FIELDS, ANOMALIES, DEPOSITS, SEDIMENTATION, BATHYTHERMOGRAPH DATA, MAPS, USSR

Subject Categories : Physical and Dynamic Oceanography
      Geomagnetism
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE