FLORIN SCURTU
Institutul geologic al Romaniei, Bucuresti
ON THE GEOLOGICAL SIGNIFICANCE
OF A LOCAL GRAVITY MINIMUM IN THE STREI BASIN
(Abstract)
The paper gives the most probable geological significance of a very local
and sharp gravity minimum (AGLm in the paper) of about 2 mgal, in the Strei
Basin.
Mathematical modeling shows that the anomaly's source must be very shallow
and must explain a mass deficit of at least 45 million tones.
The anomaly's central part can be explained by an almost cylindrical body of
about 800 m diameter and variable vertical dimensions function of the density
contrast.
The probable shape of the body is presented in figure 7. A karst or a volcano
origin were also considered, but due to the fact that the geomorphical anomalies
appear in and around the gravity anomaly's area an impact crater produced by
an asteroid or a comet nucleus seems to be the most likely source of the anomaly.
Key words: gravity, anomaly, modeling, crater, impact, volcano, karst.