GEOL . C ROAT. 49/2 327 ZAGREB 1996 

AhsfraC! - Nole 

The Interpretation of Seismic and Geological Data of Some 
Structures in Albania 

Ahmc( C;:OLLAKU 

Based on ex is ting seism ic data , an interpre tat ion is 
sugges ted ror the two remaini ng partially unex plored 
areas in the Kruja and Ion ian tectonic zone in Alban ia. 

The Pck isht -Pcqin-Galush zone is located to the 
wes t o r the Dunnca Diapir and extends 15 km in the 
meridian d irec tion covering an a rea of approx imate ly 
100 kill:!. The Tortonian and Palaeogene limestone 
de posi ts re present the main objects for exp loration. Tn 
the Pck isht zone the re arc oil pool s at depths of approx­
imat e ly 1000 Ill. A number or exploratory wells a lso 
ex is t, with an average depth of 3000 J11 bu t these were 
Ilot s ited in adequate and/or favourable struc tural condi ­
tions. The Molasse and Palaeogene deposi ts continue to 
the cas t and west in a tongue-like form with pinch-o Lit s 
and bays producing fa vourabl e condi tions 1'01' o il accu­
mulation. Thcsc depos its arc eilher transgressive o r or 
tecton ic origi n and a rc cons idered to have significant 
potential for accum ulation of oi l. The inte rpretat ion or 
the seismic proriles clearly confi rms the ovenhrust ing 
o r the DUlllrea Di api r in a westward direc ti on. T his 
ove rth rus ting wit h a magnitude of severa l kilo me tres 
ha~ caused the masking of st ructures of the Ionian zone. 
Decreasing thickness or the Molasse dcposit s is reg is­
tered cas t ward. The possibil ity of hydrocarbon accu mu­
lation in tlte flanks of the diapiric sa lt domes IllLlSt also 
be considered . The se ism ics in thi s zone wl;rc shot 
be tween 1989 and 1992 as part of an extensive study or 
the DUlllrca Diapir. Thc lines arc comparatively short, 
very di s tant from each other and with no intersec ti ons 

A lbsics, A lbpclrol. ri cr , A lbania. 

PROCEEDINGS 

whi ch, together with the varia tion o r the weathe r ing 
parameters, makes interpretat ion very difficult. 

The Paper-Rove-Y1ezezi zone is located to the north 
of the DUlllrea D iapir and is composed of th rust be lts 
wit h fl ysch, fol ding wes twa rd. The ca rbonate mo un­
tains are exposed in the eas tern pnrt of the mea. The 40 
km long zone ex te nd s in a me ridi onal direction and 
covers an area of 300 km 2

. A few wells arc drilled , but 
were located outside thc prospect zones . Apa rt from 
these wells, the area can be cons ide red to be st ill rela­
tive ly unexplored, with poss ibilities J"or the discovery of 
oil and gas pools. The structures arc tectonically super­
imposed and the outcroppin g Neogene depos it s are 
overlying the older st rata. The acquisi ti on or seismic 
data in thi s a rea bega n in 1970. The rugged terrain , 
togethe r wit h variations of the wcnthering zone parame­
ters, ncgative ly influenced the quali ty or the recorded 
data. It was main ly the magnetic record ing sys tem that 
was used (95% of the profiles) and on ly a number of 
more recently shot lincs (5%) arc in a d ig ital recorded 
form . There fore, the desc ribcd system is not only char­
ac te ri sed by irregul a r coverage, but is also no t a un i­
rOfm one. 

Three conclusions may be d raw n. Firs tl y, both 
zones a rc in adequate ly covered by se ismi c elata. Sec­
ond ly, st rong lateral and verti ca l velocity g radi e nts 
ex ist , and thirdly , one Can not overcll1phasise the impor­
tancc of reprocessing of the seismic I inc. 



Geologia Cro:ltica 49(2