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In this paper we present and elaborate one example when bauxite was the main target of investigation. During reprocessing and reinterpreting original input data from locality “Crvene stijene” near Jajce in Bosnia and Herzegovina, it was established that bauxite hanging wall and footwall rocks in fact present even more valuable mineral resources, dimension stone. This paper presents results of reprocessing and reinterpretation of original data with focus not only on primary resource, but on resources that are developed in footwall and hanging wall. Final goal of the research was to optimize the ratio between research and exploration cost and total profit by exploration of all available mineral resources in the area. For that purpose, new method of bauxite (primary resource) and associated deposits is developed and named “integrated approach”. Integrated, joint evaluation of bauxite and associated deposits (dimension stone), would give far greater significance to whole area. Finally, with this new method, the ratio between overall profit and cost will be maximized.

The paper presents the stratigraphy of Paleogene strata fromthe central part of carbonate Dinarides. The carbonate and the clasticrock units were stu died. Their contact with underlying Senonian limes toneis marked by unconformity as a result of Laramian tectonic phase.The unconformity is denoted by the abundance of bauxite deposits.The abundance of calcareous nanoplancton species as well asben tic foraminifera points at the sedimentation of Paleogene strataduring the Eocene period. The succession of sediments with easilyrecognizeable transgressive, inundation and regres sive features hasbeen established.Lithostratigraphical characteristics enabled the distinguishing oflarger lithofacies groups. The simultaneousness of carbonate rockswith lower part of clastic succession as well as the transitionallitho·facies have been approved. The simultaneous overburden of bauxitedeposits regardless of its lithology (carbonate of clastic) speaks infavour of the unite bauxitebearing phase.

Displacements of the Adriatic microplate, particularly of itssouthern part, are of crucial importance for the understanding ofrecent tectonic movements. Deformations of the structural fabric andthe resulting tectonic activity also encompass the studied area. Thereare four most active fault zones - Mosor-Biokovo, Zagvozd-Vrgorac-Metkoviæ, Trilj-Tihaljina-Èapljina and Imotski-Meðugorje-Popovopolje. In the explored area, these zones delimit the Imotsko polje.The calculated regional stress is oriented in the range between10-190¡ and 350-170¡. The relationship between the orientation ofstructural units and stress enables reverse displacements, most frequently in the direction of the south and south-east. The change instress orientation in the Mt. Biokovo hinterland makes the aforementioned fault zones surrounding the Imotsko polje favourably oriented in respect to the stress, thus enabling dextral horizontal tectonic transport of the structures in different fault blocks.In the two fault zones - Trilj-Tihaljina-Èapljina and Imotski-Meðugorje-Popovo polje, there are 98 outcrops suitable for the structuralgeology measurements. The obtained data on the local stress orientation and spatial displacement of structures are the most important.The character of faults and the most active fault sections are marked,as well as the local structures that are formed due to strong horizontalcomponent of structural displacement in the studied fault zones.Recent tectonic activity is confirmed by the occurrence of earthquakes.Spatial distribution of the earthquake epicentres depicts zonesof seismotectonic activity that are related to the aforementioned mostimportant fault zones. Two of the fault zones - Trilj-Tihaljina-Èapljinaand Imotski-Meðugorje-Popovo polje are especially well markedby earthquakes occurring at depths of between 3 and 15 km.

At the end of Pliensbachian or during the Toarcian, several carbonateplatforms were individualised by extensional tectonics in southernTethys, of which the Adriatic Carbonate Platform is one. As a uniqueand isolated shallow marine depositional system it existed until theend of the Cretaceous. In the Late Lias, the platform margins andslopes were formed by the individualisation processes. Due to thepresence of younger sedimentary cover and tectonic disruption fromthe Early Jurassic until the present, only small parts of the north-easternmargin and its slope are exposed at the surface.During the entire “life-span” of the platform, its NE margin andslope retained more or less the same palaeogeographic position – fromwestern to south-eastern Slovenia, through the central part of Croatia,western and central Bosnia, northern Herzegovina and Montenegroall the way to northern Albania. The region between Žumberak inCroatia and central Bosnia was the most dynamic part of the platformmargin during the Jurassic and Cretaceous. Shifts of the marginal andslope facies were recorded in Žumberak, where the platform area wasprogressively reduced during the period from the Lias to the Malm.At the same time, the platform was extended in central Bosnia andMontenegro. A more pronounced reduction of the platform in Cenomanian times marked the beginning of the process of disintegration.The end of the Cretaceous was also the end of the “life” of the AdriaticCarbonate Platform. It mostly became emergent, and the renewedshallow marine carbonate depositional environments in the Eocenewere short-lived and lacked the previous platform characteristics, aswell as the regional distribution and integrity.

Seismotectonically active zones are formed due to displacements of segments of the Adriatic micro-plate that differ in size and in their rate of movement, and by the resistance of the rock masses of the Dinarides. The spatial position of these zones can be determined through the locations of earthquake foci. The zones of seismotectonic activity are then correlated with the most important faults on the surface.The seismotectonically active zones are relatively steeply inclined in the shallowest 10-20 km, which is caused by the oblique contacts between the Adriatic micro-plate and the Dinarides. The zones are curved at depth in many cases, which reflects the compression of the area. Curved parts of the zones are characterised by the greatest pressures and also by the most frequent earthquakes. Mildly inclined zones reflect the reverse displacements in the area, also probably the activity on contacts between rock masses of different density, or the extension of the Adriatic micro-plate subduction. The southern part of the plate is the most active. The greatest pressures caused by these movements occur in the area between Mljet island and Dubrovnik. Therefore the majority of earthquakes, and notably the strongest ones, occur in the area between Split, Imotski, Hvar island and Dubrovnik, as well as along the Montenegro coast in a SE direction.

The extensively distributed bioclastic sedimentary bodies in the Podvrsko-Snjegavic Area, Mt. Psunj (Pozega Subdepression, Eastern Croatia) are mostly composed of fragments of bryozoans, echinoids, lamellibranchs and corallinaceans. Apart from this, a relatively compositionally uniform, but granulometrically variable bioclastic detritus occurs, which also contains a smaller proportion (5-30%) of siliciclastic grains of medium to coarse sand, as well as sporadic pebbles up to 60 mm in diameter. These sediments are characterised by remarkably large-scale cross-bedding with erosional surfaces clearly delimiting the sets. They are interpreted as shallow-marine shoreface subaqueous dunes, sand bars and barriers formed on the nearshore - mainly shoreface area during the Late Badenian in a high-energy depositional cycle with strong synsedimentary tectonics. With regard to the petroleum-geological reservoir characteristics, the described Middle Miocene cross-bedded biocalcarenites are compared with numerous large oil and gas pools globally, and in other localities in Croatia on the margins of inselberg massifs between the Drava and Sava rivers and south of the Sava river.

In this paper we present and elaborate one research example when bauxite was the main target of the investigation. During reprocessing and reinterpretation of the original data from the "Crvene stijene" locality near Jajce in Bosnia and Herzegovina, it was established that bauxite hanging wall and footwall rocks in fact represent an even more valuable mineral resource, as "dimension stone". The final goal of the research was to optimize the ratio between research and exploration costs and total profit by exploration of all available mineral resources in the area. For that purpose, a new research evaluation method encompassing both bauxite (primary resource) and associated deposits was developed and named the "integrated approach". Integrated, joint evaluation of bauxite and associated deposits (dimension stone), gives a far greater economic significance to whole area. Finally, with this new method, the ratio between overall profit and cost will be optimized which results in significant increase in profit because all available deposits are considered for exploitation. Also this method can be applied on abandoned mining sites if there is some secondary profitable mineral deposit in the mine area. [ABSTRACT FROM AUTHOR]