The Late Cre ta ceous to Oligocene strata of the Dukla Nappe, which is a part of the accretionary wedge formed in front of the Carpathian orogen, re cord a his tory of the ba sin de vel op ment from rem nant to fore land ba sin stages. The lower part of the suc ces sion in di cates the first stage of ba sin evo lu tion char ac ter ized by turbidite sys tems fed from the E (NE) to W (SW). The sys tem en com passes de pos its of the £upków and Cisna for ma tions de pos ited in a chan nel-lobe tran si tion (£upków Fm.) and in sand stone-rich channelized lobes (Cisna Fm.) The tran si tional phase is rep re sented by de pos its of the Submenilite For ma tion de rived from two dif fer ent sources (SE and N) and de posited in a sub ma rine slope/ramp en vi ron ment. The third stage of ba sin evo lu tion is marked by the ad vanc ing front of the Carpathian orogen re sult ing in pe riph eral fore land ba sin de vel op ment. In creased tec tonic ac tiv ity led to a switch in sed i ment source from the SE to the NW, more com plex to pog ra phy of the ba sin and a change in sed i ment dis tri bu tion. The ini tial phase of this stage is char ac ter ized by low-density turbidites and sus pen sion fallout sed i ments of the Menilite Fm. Dis crete tec tonic pulses are re corded by the thick Cergowa sandstones, mostly de pos ited by hy brid flows and high-den sity tur bid ity cur rents. A de crease in tec tonic ac tiv ity is sug gested by heterolithic de pos its of the Krosno Fm. cap ping the sed i men tary suc ces sion.
Abstract:In structurally complicated terranes with outcrops limited in number and extent, additional methods for interpreting depositional environments are required. Statistical analysis of bed thicknesses, in addition to conventional sedimentological analysis, is a quantitative way to refine environmental interpretations, interpretations that can be useful in predicting reservoir architecture. We analysed Paleogene deep-water sediments belonging to the Cisna, SubMenilite, and Menilite Formations of the Dukla Unit, Outer Carpathian Flysch Zone and, using two independent quantitative methods, tried to define their depositional environments. As a first approach we used Carlson & Grotzinger's model (2001), which suggests power law distribution of turbidite bed thicknesses. The second one is the lognormal mixture model of Talling (2001). Based on a quantitative approach, we suggest deposition of the lowermost Cisna Formation in the channel-levee environment. The overlying sediments of the Sub-Menilite Formation were deposited in a more distal, probably outer lobe environment. The uppermost Menilite Formation is interpreted as deposits from an outer lobe/basin plain environment.
Recently, negative effects of the blasting operations and quantification of the seismic safety are regarded as very important technical problem in quarries. The impact of blasting operations is accompanied by both positive and negative seismic effects. For example, vibrations generated by explosion create very positive effect − when help to break the rocks, but, on the other hand, also result in negative effect − when affect constructions and natural environment in the vicinity of a blasting works site. If the vibrations are large enough, then the nearby objects could be damaged or destroyed. This article highlights the results of the blasting operation monitoring in limestone Lopušné Pažite quarry on Slovakia, which based on the rule that the negative effects depend on their range and strength. This method is applied in all quarries in Slovakia, which are close to settlements.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.