Digital Commons Network^™

Development Of A Low-Cost Tool For The Compositional Measurement Of Gases Derived From Mineral Water Wells From The Eastern Carpathians, Szalay Roland, Kis Boglárka-Mercedesz

Studia UBB Geologia

The Eastern Carpathians host CO₂-rich, low temperature, dry gas vents, bubbling pools and wells/drillings, which were established for the extraction of mineral water and CO₂ for the bottling industry. These wells can provide important information on the structure of the geological deposits, the depths, and the source of the gases, because they are often located at important geologic/tectonic sites. Our aim was to test the applicability of a hand-made and low-cost tool in preselected wells/drillings, in order to measure the concentration of different gas species. This was challenging due to the high water and gas discharge of …

A Novel Conceptual Model Of Intrusion Related Gold Bearing Systems And Exploration Tools, Eugen Orlandea, Şerban-Nicolae Vlad

Studia UBB Geologia

Despite numerous debates conducted in the last two decades, the concept of intrusion related gold systems IRGS remains controversial and sometimes befuddling. The key issue drifts from case to case, i.e., initial to subsequent proposed classifications, presence of gold in reduced fluids-porphyritic environments, non-porphyry gold in orogenic terrains and participation of non-magmatic gold fluids in depositional processes. Trying to avoid atypical or particular aspects of certain deposits, a genuine metallogenetic depiction intends to enhance the intrusion related systems meaning. Gold is either a major constituent or a mere byproduct. A vertical metal zonation develops from surface to depth: Au, Ag …

Monographic Study Of The Late Cretaceous Representatives Of The Bolivinoidid Benthic Foraminifera, Marius Dan Georgescu

Studia UBB Geologia

A high resolution taxonomy and classification framework is developed for the representatives of the calcareous benthic foraminiferal family Bolivinoididae; this family consists of 24 species assigned to three genera. This new classification includes data pertaining of the test ultrastructure, ornamentation and porosity, which are obtained with the aid of careful and extensive study of the specimens under the scanning electron microscope. Two new taxa are described: Bolivinoides antiquum – n. sp. and Swiecickina – n. gen. A biostratigraphical framework consisting of eleven biozones based on bioevents given by species of the genera Bolivinoides and Swiecickina is developed for the middle …

Upper Cretaceous Planktic Foraminiferal Biostratigraphy, Marius Dan Georgescu

Studia UBB Geologia

A high-resolution biostratigraphical zonation based on planktic foraminifera is developed for the Upper Cretaceous. It consists of twenty-five biozones defined with the aid of serial and coiled planktic foraminiferal taxa and presents the highest resolution developed with planktic foraminifera for this Series. All the index species used in biozonation are part of the practical classification associated with the evolutionary classification. The new biozonation represents a first in using data directly derived from the Theory of Evolution and its evolutionary classification extension in an application of paleontology such as biostratigraphy. By this the Theory of Evolution becomes a direct provider of …

Paleocene "Flysch-Type" Agglutinated Foraminifera From The Northern Part Of The Eastern Carpathians (Romania), Raluca Bindiu-Haitonic, Sorin Filipescu

Studia UBB Geologia

Representative assemblages of agglutinated foraminifera from the Paleocene deposits of the Suha outcrop in the Tarcău Nappe (Eastern Carpathians, Romania) were analyzed using diversity indices, morphogroups and foraminiferal biofacies in order to describe the paleoenvironmental and palaeobathymetrical conditions of the studied area. The results suggest bathyal environments, close to the Carbonate Compensation Depth (CCD) and a flysch type biofacies. The assemblages are dominated by coarsely agglutinated flysch-type taxa: tubular (Nothia, Rhizammina, Rhabdammina), globular (Saccammina), flattened planispiral and streptospiral (Rzehakina) and flattened streptospiral forms (Paratrochamminoides and Trochamminoides). The agglutinated foraminifera morphogroups display variations …

Geochemical Investigation Of Neogene Volcaniclastic Rocks From The South-Eastern Part Of The Zărand Basin (Apuseni Mts., Romania) – Implications For Locating The Source Area, Luminiţa Zaharia, Nicolae Har, Marius Vlăzan

Studia UBB Geologia

A geochemical study of the Neogene volcaniclastic deposits from the south-eastern part of the Zărand Basin (Apuseni Mts., Romania) was performed. The investigated rocks are represented by medium-K calc-alkaline andesites. Their geochemical features are similar with those of other Neogene volcanic rocks from the Apuseni Mts. However, the investigated rocks also display a few particularities: limited variation of some major oxides and trace elements content, much lower content of Nb or of light REE. As for the other Neogene volcanic rocks from Apuseni area, the geochemical evidence supports a magma source located close to the boundary between crust and garnet-free …

A Middle Miocene Rhinoceros Find In Transylvania: 19Th Century Forgotten Correspondence, Vlad A. Codrea, Márton Venczel

Studia UBB Geologia

The single report in Romania of the Middle Miocene rhinoceros Brachypotherium brachypus, a rare species in our country or elsewhere in Europe, is from Petros locality in Hațeg basin. This find is an old one, nearly a century and half ago. A fragmentary letter written by the Hațeg naturalist Ádám Buda to Prof. Antal Koch retrieved in the Paleontological Museum of Babeș-Bolyai University Cluj-Napoca brings some light about this find. The letter was probably written around 1881-1882 and reveals the active exchanges of scientific data between the professor from Cluj and country people interested in natural sciences.

Review “A Memoir Of My Life And Work”, Bica Ionesi, Junimea Publishing House, Iaşi, 2015, Ioan Mârza

Studia UBB Geologia

No abstract provided.

Calcareous Nannofossils- And Ammonites-Based Biostratigraphy Of The Baghamshah Formation (Central Iran Basin, Iran), Mădălina-Elena Kallanxhi, Mostafa Falahatgar, Mojtaba Javidan, Mehdi Sarfi, Tahere Parvizi

Studia UBB Geologia

Middle Jurassic calcareous nannofossils and ammonite assemblages from the Baghamshah Formation are described here, cropping out east of Semnan locality (Central Iran Basin, Iran). Low diversity and abundance characterize the nannofossil assemblages, which are dominated by genera belonging to the Family Watznaueriaceae. The calcareous nannofossil assemblages lack the usual markers for the Callovian interval, making difficult the age attribution. Ammonite assemblages display low diversity and poor preservation. From a biostratigraphical point of view, nannofossil assemblages would suggest that the material studied belongs to the NJT12 Zone from the Tethyan / sub-Mediterranean province and to the NJ12b subzone - lower NJ13 …

Late Holocene Palaeohydrological Changes In A Sphagnum Peat Bog From Nw Romania Based On Testate Amoebae, Andrei-Cosmin Diaconu, Roxana Grindean, Andrei Panait, Ioan Tanţău

Studia UBB Geologia

This paper investigates the possibility of reconstructing the palaeohydrological changes in an active Sphagnum peat bog from north-western Romania using testate amoebae fauna and organic matter content determined by loss on ignition (LOI). In total 28 taxa of testate amoebae were identified of which 11 were frequent enough to present a remarkable ecological significance. Based on the relative abundance of these taxa nine zones were identified, crossing from very wet to dry climate conditions. The wet periods identified are characterized by taxa like Centropyxis cassis, Amphitrema flavum and Hyalosphenia papilio, while in the dry periods Difflugia pulex and …

Late Oligocene Calcareous Nannofossils From Albanian-Thessalian Intramontane Basin (Bozdovec Section, Albania) – A Quantitative Approach, Mădălina-Elena Kallanxhi, Stjepan Ćorić, Arben Koçiu

Studia UBB Geologia

Quantitative and semi-quantitative analyses of calcareous nannofossils were performed on samples collected from Bozdovec Section (Albanian-Thessalian intramontane basin, Albania). The calcareous nannofossil assemblages are dominated by: small reticulofenestrids, Cycligargolithus floridanus, Coccolithus pelagicus, Sphenolithus spp., Reticulofenestra scrippsae, Helicosphaera spp., Clausicoccus spp., Reticulofenestra bisecta, Cycligargolithus abisectus. Biostratigraphically, the studied outcrop is assigned to the Late Oligocene NP25 - Sphenolithus ciperoensis Zone. In the Mediterranean area, this interval can be correlated with the MNP25a - Sphenolithus ciperoensis Zone, while according to the zonation for low to middle latitudes the investigated material would belong to the CNO5 - Sphenolithus …

Foraminiferal Biostratigraphy And Paleoenvironments Of The Middle Eocene Deposits From The Northern Part Of The Tarcău Nappe (Eastern Carpathians, Romania), Raluca Bindiu, Sorin Filipescu

Studia UBB Geologia

Middle Eocene foraminiferal assemblages have been analyzed from three representative sections of bathyal deposits cropping out along the Brodina Valley and Voroneţ Valley in the northern part of the Tarcău Nappe (Eastern Carpathians, Romania). The foraminiferal assemblages are dominated by agglutinated species with tubular forms (Psammosiphonella cylindrica, Nothia spp., Bathysiphon sp.), globular (Saccammina spp., Psammosphaera spp.), coiled (Recurvoides spp., Reticulophragmium spp.) and flattened streptospiral (Paratrochamminoides spp., Trochamminoides spp.). Coarsely agglutinated taxa are characteristic for the “flysch – type” agglutinated foraminiferal biofacies. The depositional setting was probably upper to middle bathyal, as suggested by the …

New Data On The Early - Middle Badenian Transition In The Nw Transylvanian Basin (Romania) Revealed By The Planktonic Foraminifera Assemblages, Rodica Filipescu, Sorin Filipescu

Studia UBB Geologia

The planktonic foraminifera assemblages recovered from two cores drilled in Cluj-Napoca (NW Transylvanian Basin) demonstrate connections of the basin to the open seas before the middle Badenian evaporite deposition. Assemblages suggest clear changes in the environments, with an initial transgressive trend, followed by a decrease in the rate of sea-level rise, and finally a sea-level fall. The occurrence of planktonic foraminifera (mainly Globorotalia) offers a good potential for correlation of the pre-evaporitic interval with the uppermost Langhian and can be used for tracing the early-middle Badenian boundary.

Middle To Late Holocene Vegetation Shifts In The Nw Transylvanian Lowlands (Romania), Roxana Grindean, Ioan Tanţău, Sorina Fărcaş, Andrei Panait

Studia UBB Geologia

The Iaz peat bog, located in northwestern Transylvania at 300 m a.s.l., was cored to study the Middle to Late Holocene vegetation shifts in the area. The pollen record is supported by seven ¹⁴C datings. The base of the sequence starts in the Middle Holocene, when the outer woodlands were dominated by Corylus avellana together with other components of the Quercetum mixtum. The local establishment of Carpinus betulus occurred at 5700 cal. yr BP with maximum values at around 4900 cal. yr BP. At 4800 cal. yr BP, Fagus sylvatica became locally established and expanded, possibly as a …

Dasycladalean Algae From Upper Jurassic–Lower Cretaceous Limestones Of Piatra Craiului Massif (South Carpathians, Romania) And Their Relationship To Paleoenvironment, Cristian Victor Mircescu, Ioan I. Bucur, Emanoil Săsăran

Studia UBB Geologia

The Mesozoic limestones of Piatra Craiului Massif were deposited in the Dâmbovicioara sedimentary area, at the eastermost part of the Getic carbonate platform. In order to study the microfacies and to provide a more detailed biostratigraphy, we sampled the carbonate succession from Piatra Craiului Massif along several sections. The identified microfacies point to reef slope, carbonate platform margin or restrictive, lagoon-type internal depositional environments. Some of the identified microfossils are biostratigraphic markers for the Tithonian-Lower Valanginian. The calcareous algae form associations typical for reef slopes and internal platforms. The latter can be subdivided into: (1) restrictive environments (low-energy subtidal-intertidal), dominated …

In Memoriam: Academician Prof. Dr. Doc. Radu Dimitrescu, Ioan MâRza

Studia UBB Geologia

No abstract provided.

Historical Romanian Meteorites: Emendations Of Official Catalogue Records, Dana Lüttge-Pop, Razvan A. Andrei, Nicolae Har

Studia UBB Geologia

With its more than 50,000 valid official and provisory meteorite entries, the online catalogue of The Meteoritical Society, i.e., the Meteoritical Bulletin Database (MBDB) represents the most authorized and primary source of information in the field. Unfortunately, this official reference contains some erroneous geographical information in the case of five historical Romanian meteorites. For Zsadany, the current country information is “Hungary, Bekes county” instead of Romania, Timiş County. For Mezö-Madaras and Tauti, the county affiliations “Harghita” and respectively “Cluj” have to be corrected into Mureş and Arad, respectively. Geographical coordinates for Kakowa and Ohaba require minor corrections, only.

The …

Sedimentary Deposition Of Bozeş Formation (Apuseni Mts., Romania) – Detrital Zircon Dating And Micropaleontological Ages, Ramona Bălc, Luminiţa Zaharia

Studia UBB Geologia

In order to establish the age of the Bozeş Formation, which crops out in the SE Apuseni Mts., calcareous nannofossils investigations and U-Pb detrital zircon dating were performed on Stăuinii Valley deposits. The results were correlated, and further compared with previous fossil age data. The U-Pb detrital zircon age spectrum reveals a consistent Upper Cretaceous grain population, which yielded an age of 83 Ma (concordia age of 82.87±0.59 Ma), interpreted as the maximum deposition age, thus, marking the Lower Campanian as the initiation of sediment deposition. Based on the presence of some important taxa in the calcareous nannofossils assemblage, the …

Bioerosive Structures In Orbitolinid Foraminifera: Examples From The Lower Cretaceous Of Central Iran, Felix Schlagintweit, Ioan I. Bucur, Koorosh Rashidi, Behnam Saberzadeh

Studia UBB Geologia

Lower Cretaceous orbitolinid assemblages from Central Iran yield various bioerosional structures. The omnipresent traces of different boring taxa and groups (e.g., sponges, calcimicrobes, incertae sedis) represent a characteristic feature of the investigated thin-section material. The assemblage can be attributed to the Entobia ichnofacies dominated by borings assigned to the activity of sponges. The boring galleries are often concentrated in a plane parallel to the test surface, along the boundary of the marginal and the central zone of the orbitolinid tests. The borings are observed in foraminiferan-dasycladalean wackestones to poorly washed-out packstones, which can be referred to a subtidal …

Sedimentology And Biostratigraphy Of The Early-Middle Miocene Transition In Nw Transylvanian Basin (Pâglişa And Dej Sections), Claudia Beldean, Răzvan Bercea, Sorin Filipescu

Studia UBB Geologia

The Early - Middle Miocene transition can be studied in several sections from the north-western Transylvanian Basin, across the boundary between the Hida and Dej Formations. The Pâglişa and Râpa Dracului (Dej locally outcrop) sections offer a very good record of the changes in the sedimentary facies and micropaleontological content across the boundary. The lower parts of the sections display the upper Hida Formation with prodelta fine grained sediments covered by coarser grained sediments related to a delta front progradation. Four sedimentary facies associations have been separated based on grain size and associated sedimentary structures. Micropaleontological assemblages are moderately to …

Facies Analysis And Sequence Stratigraphy Of The Asmari Formation In The Northern Area Of Dezful Embayment, South-West Iran, Fateme Zabihi Zoeram, Mohammad Vahidinia, Asadollah Mahboubi, Hasan Amiri Bakhtiar

Studia UBB Geologia

This paper concerns the sequence stratigraphy of the Oligocene (Rupelian–Chattian)–Early Miocene (Burdigalian) Asmari Formation based on microfacies analysis of the sediments in the Ghale Nar Oilfield, central area of Zagros fold-thrust belt. Fourteen facies types typical for upward shallowing trend from open marine (MF 1–3), to shoal (MF 4-5), semi-restricted and restricted lagoon (MF 6–12) and finally to near-shore lagoon (MF 13-14) depositional environments were identified. Based on the environmental interpretations, we reconstructed a homoclinal ramp mainly represented by its inner and middle sectors. Facies types MF 4–14 are characterized by the occurrence of large and small porcelaneous benthic foraminifera …

Benthic Foraminifera And Calcareous Algae From The Anisian−Norian Succession In The Tatras (Poland, Slovakia): New Data From High−Tatric And Krížna Units, Tomasz Rychliński, Daria K. Ivanova, Piotr Jaglarz, Ioan I. Bucur

Studia UBB Geologia

The paper is focused on new micropalaeontological data from the Triassic succession of Krížna and High-Tatric units in the Tatra Mts. Benthic foraminifera species were determined from the Anisian−Norian succession of the Krížna Unit and the Anisian succession of the High-Tatric Unit. In the later, calcareous algae species were also found. In mentioned Triassic successions, most of genera were described for the first time, while the others were found in new locations. A few of them belong to index fossils. Based on the assemblage containing calcareous algae Oligoporella species, characteristic for the Oligoporella pilosa – Phisoporella pauciforata zone, as well …

Baseline Physicochemical Investigations On Waters From Three Blue Holes, San Salvador Island, Bahamas, Jacqueline Sampson, Ken Guilbeault

Studia UBB Geologia

Physicochemical parameters have been studied in the water column of Inkwell, Church, and Watling’s Blue Holes (San Salvador Island, Bahamas). Water samples were collected from multiple depths at the three blue holes to identify and characterize changes of physical and chemical parameters. The values were compared to the average ocean concentrations in order to assess how connectivity to the ocean, evaporation, freshwater input, and bacterial activity influence water rock interactions. The salinity concentrations vary between the surface and ~ -4 m in each blue hole before stabilizing to rather similar values (~19.6‰). Mixing processes in the water column at Inkwell …

Thaumatoporella Ladders Unraveled, Felix Schlagintweit

Studia UBB Geologia

Thaumatoporella (incertae sedis) represents a widespread constituent in Middle Triassic–Cretaceous shallow-marine carbonates of the Tethyan realm and exhibit a wide morphological variability. Seemingly monostromatic cell-layers intermingled with and incorporated into bacinellid crusts (“Bacinella irregularis”) were described as Thaumatoporella bridges or ladders in the literature. This appearance of Thaumatoporella also accounted for the creation of the genus Polygonella ELLIOTT and its misleading comparison with single-layered crustose corallinacean alga, e.g., genus Lithoporella. In fact, these “ladders” belong to the roof part of thaumatoporellaceans encrusting microbial crusts that subsequently became overgrown and thus incorporated. Often a rudimentary thin basal layer …

"Rosalina" Marginata Reuss 1845 (Foraminifera) And Its Taxonomic Position, Theodor Neagu

Studia UBB Geologia

The central idea of this article is the obligation of a micropaleontologist to respect without any doubt the rules and demands stipulated by the International Commission on Zoological Nomenclature (ICZN), in order to avoid taxonomical mistakes. An unusual example of confusion generated by disregard for the ICZN Code rules is the case of Rosalina marginata REUSS. The species Rosalina marginata REUSS, 1845 emend. REUSS, 1854 is here transferred to the genus Dicarinella. Other specimens illustrated as “Marginotruncana marginata” for example the “neotype” established by Jirova (1956) are placed in the new species Marginotruncana pseudomarginata nom. novum.

Deep-Marine Channel Deposits Of Cotumba-Sita-Tǎtaru Sandstones, Teleajen Valley, Romania (East Carpathian Flysch Zone), Lubomir Strba

Studia UBB Geologia

The Cotumba-Sita-Tǎtaru Sandstones of Teleajen Unit (Upper Aptian – Albian) are relatively well exposed in the Teleajen Valley (Prahova County, Romania), as predominantly thick and massive sandstone beds. Other facies occurring in the study area include sandstones with several sedimentary structures (e.g., parallel lami- nation, ripples, convolution), siltstones and mudstones. Almost 200 m long outcrop gives great opportunity for sedimentological study focusing on deep-marine facies and interpretation of exposed deposits. A sedimentological study of the facies and stacking patters suggest that these rocks were deposited in relatively shallow depositional channels with levees and interchannel areas.

New Insights Into Troglotella Incrustans Wernli & Fookes, 1992, A Fascinating Upper Jurassic-Upper Cretaceous Foraminifer, Felix Schlagintweit

Studia UBB Geologia

New data about the highly variable test morphology of the benthic foraminifer Troglotella incrustans WERNLI & FOOKES (Oxfordian-Lower Cenomanian) are presented, permitting an emended species/genus diagnosis. This concerns mainly the existence of a large final chamber with fistulose extensions that may follow the uniserial or the irregular-branching test part. The way of life of T. incrustans (cryptoendolithic vs. euendolithic) is discussed against the background of different existing models in the literature. The study is based on material (thin-sections and provided photographs) mainly from the Upper Jurassic of Austria, Italy, Romania, Ukraine, and also the type-locality of France.

Origin, Evolutionary Classification, And Biostratigraphic Significance Of The Late Cretaceous Planktic Foraminiferal Directional Lineage Bollitruncana O.A. Korchagin, 2001, Marius Dan Georgescu

Studia UBB Geologia

Taxonomic revision of the genus Bollitruncana O.A. Korchagin, 2001 shows that it accommodates a directional lineage, which consists of two species: B. carpathica (Scheibnerová, 1963) and B. posthelvetica (Hanzliková, 1963). Bollitruncana directional lineage is restricted to Turonian. A new planktic foraminiferal biozone is recognized in the Turonian, namely the Bollitruncana carpathica Biozone.

Proceedings Of The European Society For Isotope Research - Esir Ix, Editor: Bogdan P. Onac, Editor: Ioan I. Bucur

Studia UBB Geologia

No abstract provided.

In Memoriam - Dr. De̒Nes Ja̒Nossy, László Kordos

Studia UBB Geologia

No abstract provided.