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SYSTEMATIZATION AND PROCESSING OF GEOLOGICAL AND GEOPHYSICAL DATA IN THE PART OF NORTH-WEST OF TRANSYLVANIAN BASIN

Laurențiu Asimopolos

Abstract

In this paper, we present an area, from the NV of the Transylvanian Basin, which has a particular geological structure. The complex geological aspects begin to be clarified once the Geological Maps 1: 50,000 were made. There is a marginal area in the North-East part, which is a monocline which sinks to the South and South-East. This marginal area is delimited by the sloping area through an important fracture, in the direction of Valley Calda - Gadalin - Gherla. Southwest of this fracture is the area with salt. The eastern marginal zone between Cluj and Turda is a succession of monoclines falling to the East or North-East, which is a remnant of the connecting area between the Zlatna Basin and the Transylvanian Basin interrupted by the Mesozoic calcination Gorge Turzii - Sandulesti, . This lifting continues inside the Transylvanian Basin, under the Miocene sediments, with Puini lifting. The area with salt thus forms a triangle between Gherla - Cluj - Turda, and overlaps with the part of the Transylvanian Basin where the salt has a large thickness, able to bear a slump of sediments above it. These salt formations have a complicated structure, not at all similar to the sequence of synclinal and anticlinal on map 1: 200000. Recent survey and mappings for 1: 50000, maps show a structure of salt that was born in at least two tectonic stages, as the initial salt are flawed and cracked by a younger tectonic stage. We complete the geophysical and geological information from the digitized maps at the level of Romania and made multiparametric maps using the Surfer program, interpolated with the Kriging method, using a suitable grid that would not lose anything in the resolution of the initial map but in the same time not to introduce unnecessary and redundant information.

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