DBPapers
DOI: 10.5593/SGEM2016/B11/S01.063

POTENTIAL DATA INTERPRETATION AND 2 3/4 D MODELLING AIMING TO DECIPHER AN ELEVATED STRUCTURE REVEALED BY 3D SEISMICS ON THE ROMANIAN OFFSHORE

R. Dimitriu, C. Dinu, I. Munteanu, I. Stanciu
Monday 5 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-55-1 / ISSN 1314-2704, June 28 - July 6, 2016, Book1 Vol. 1, 499-510pp

ABSTRACT
The 2¾D modelling of marine gravity and magnetic data was carried out on the Romanian offshore, along two lines which cross the elevated structure of interest. 3D seismic and well data are also integrated in models. Although the regional morphology of the marine magnetic field strongly sustains the existence of Hercynian intrusions in the deep of the study area, the amplitude and wave-length of magnetic anomaly mapped and subsequently modelled above the elevated tectonic block do not comply with the existence of any such magnetic source within it, but accept the deeper presence of magmatic rocks (depth over 10 km to the top of the intrusion), within the crystalline basement. The hypothetical existence of a interpreted reef structure build-up within the uplifted block was also modelled considering a maximum density contrast of -0.15 g/cc between the reef and the surrounding geological environment. The alternative model resulted is theoretically possible but its rightness should be strengthened by other complementary data prior to undertaking concrete actions aiming the structure’s check and validation. The most likely model of the studied structure, resulted from the gravity and magnetic data 2¾D modelling, accept that this positive feature of the sedimentary basement corresponds to a tilted tectonic block, around 5.5 km thick, bordered by faults, consisting of Palaeozoic sedimentary rocks of Măcin-type. Below it, the crystalline basement is situated at depths from over 10 km and hosts a complex of Hercynian age intrusions.

Keywords: Black Sea, tectonics, gravity & magnetics, interpretation, modelling.

Home | Contact | Site Map | Site statistics | Visitors : 61 / 353063

Follow site activity en  Follow site activity GEOLOGY  Follow site activity Papers SGEM2016   ?

CrossRef Member    Indexed in ISI Web Of Knowledge   Indexed in ISI Web Of Knowledge
   

© Copyright 2001 International Multidisciplinary Scientific GeoConference & EXPO SGEM. All Rights Reserved.

Creative Commons License