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Articles 841 - 870 of 1881
Full-Text Articles in Earth Sciences
Study On The Diagenetic Calcareous Accumulations In A Soil Profile From Floresti (Cluj County, Romania), Horea Bedelean
Study On The Diagenetic Calcareous Accumulations In A Soil Profile From Floresti (Cluj County, Romania), Horea Bedelean
Studia UBB Geologia
The studied calcretes developed in two different levels (horizons) in the soil profile from Floreşti (Cluj County). The deposits outcropping in the area are represented by Bartonian-Priabonian sedimentary rocks (Ciuleni Member, Viştea Limestone) and the Quaternary horizon (terrace of Someşul Mic River, consisting of pebbles of different origin), which represent the parent rock of the soil. A detailed petrographical and mineralogical description of the calcretes is given below, based on macroscopic, microscopic and X-ray diffraction analysis. It led to the conclusion that the calcretes from the studied profile have a pedogenic origin. The calcretes consist of distinctive subhorizons within the …
Transport And Emplacement Of Ignimbrites And Resedimented Volcaniclastics From Gutai Mts., Eastern Carpathians, Romania, Alexandrina FüLöP
Transport And Emplacement Of Ignimbrites And Resedimented Volcaniclastics From Gutai Mts., Eastern Carpathians, Romania, Alexandrina FüLöP
Studia UBB Geologia
Gutâi Mts. had started to be built up in Middle Miocene, ca. 15.4 Ma ago. A series of explosive events developed starting with a major magmatic explosion and caldera collapse responsible for large volumes of ignimbrites. Successive explosions followed caldera collapse triggering a series of pyroclastic currents that underwent subsequent reworking. Mass flow has been the main transport mechanism recorded by the sedimentary structures of either ignimbrites or post-ignimbrites volcaniclastics. Multiple ignimbrite units resulted from subaerial mass flows, successively emplaced by progressive aggradation from the basal layer of a density-stratified pyroclastic current. The overlying sequence is composed of different volcaniclastics …
Mineralogy Of The Pollutant Products Formed In The Masca Exploration Area (Lower Iara Valley Basin, Cluj County, Romania), Lucreția Ghergari, Judit Gál
Mineralogy Of The Pollutant Products Formed In The Masca Exploration Area (Lower Iara Valley Basin, Cluj County, Romania), Lucreția Ghergari, Judit Gál
Studia UBB Geologia
In the present study the mineralogy of a tailing dam situated in the Maşca mining area is discussed. Our aim was to point out the physicochemical processes, which occur under the action of the exogenous factors. The studied samples were collected from different levels of the dam wall, from the Maşca mine and Iara river waters. The applied analytical methods are: transmission polarized microscopy, transmission electron microscopy, X-ray diffractometry, and atomic absorption spectrometry. The physicochemical parameters have been measured in situ and in the laboratory. The minerals present in the tailings are represented by: garnets (andradite-grossular and almandine series), diopside, …
Raman Spectroscopy On Gem-Quality Microcrystalline And Amorphous Silica Varieties From Romania, Dana Pop, Ciprian Constantina, Dan TăTar, Wolfgang Kiefer
Raman Spectroscopy On Gem-Quality Microcrystalline And Amorphous Silica Varieties From Romania, Dana Pop, Ciprian Constantina, Dan TăTar, Wolfgang Kiefer
Studia UBB Geologia
Previous micro-Raman investigations on a wide range of types of microcrystalline silica samples have evidenced the presence of a new silica polymorph, i.e. moganite, in virtually every sample. In order to test the ubiquity of moganite in such geological materials in Romania, micro-Raman measurements were performed on gem-quality microcrystalline quartz (chalcedony, including agate and jasper) and additionally on quasi-amorphous silica (opal, silicified wood) samples from different occurrences. All the studied materials, including the quasi-amorphous varieties contain moganite in variable amounts (from traces up to local concentrations of 75 wt. %). Establishing correlations between colour and texture of the chemically-“pure” micro-crystalline …
Mineralogy And Technological Properties Of Some Kaolin Types Used In The Ceramic Industry, Marcel Benea, Maria Gorea
Mineralogy And Technological Properties Of Some Kaolin Types Used In The Ceramic Industry, Marcel Benea, Maria Gorea
Studia UBB Geologia
Three different kaolin types used in ceramic industry were analyzed by different methods in order to obtain a complete mineralogical and technological characterisation. Studies were carried out by using a combination of analyses (XRD, SEM, methylene blue absorption, particle size distribution) of both the bulk sample, and the fine fraction. The main technological characteristics (drying and firing shrinkage, Pfefferkorn plasticity index, rheology, resistance, and colour after firing) of the ceramic masses prepared by using the analyzed kaolin types were also established. As a result, a direct relationship between the mineralogical composition and particle size distribution of different kaolin types vs. …
Metallogeny Of The Gold Quadrilateral: Style And Characteristics Of Epithermal - Subvolcanic Mineralized Structures, South Apuseni Mts., Romania, Șerban-Nicolae Vlad, Eugen Orlandea
Metallogeny Of The Gold Quadrilateral: Style And Characteristics Of Epithermal - Subvolcanic Mineralized Structures, South Apuseni Mts., Romania, Șerban-Nicolae Vlad, Eugen Orlandea
Studia UBB Geologia
The Romanian territory contains numerous ore deposits mined since pre-Roman times. An assessment of historical gold production of the Gold Quadri-lateral (GQ) yielded a total estimate of 55.7 Moz of gold throughout an area of 2400 km2. Interpreted in terms of mineralization density this is 23,208 oz of gold/ km2. The geological setting of the GQ is represented mainly by Tertiary (14.7 My to 7.4 My) calc-alkaline volcano-plutonic complexes of intermediate character in sedimentary basins of molasse type. These basins are tectonically controlled by NW-SE lineation across early Alpine magmatic products, i.e. subduction related Jurassic-Lower Cretaceous igneous association (island arc …
Proceedings And Abstracts Of The 6th International Symposium On Mineralogy - Cluj-Napoca ─ Romania, September 18-21, 2003, Editor: Corina Ionescu, Editor: Volker Hoeck
Proceedings And Abstracts Of The 6th International Symposium On Mineralogy - Cluj-Napoca ─ Romania, September 18-21, 2003, Editor: Corina Ionescu, Editor: Volker Hoeck
Studia UBB Geologia
No abstract provided.
The Ivth Symposium Of The Romanian Society Of Palaontologists: Cluj-Napoca, September 5-7, 2003, Vlad Codrea, Ovidiu Barbu
The Ivth Symposium Of The Romanian Society Of Palaontologists: Cluj-Napoca, September 5-7, 2003, Vlad Codrea, Ovidiu Barbu
Studia UBB Geologia
No abstract provided.
Coptocampylodon Pantici N. Morpho Sp. From The Turonian Of Nw Serbia, Darivojka Ljubović-Obradović, Rajka RadoičIć
Coptocampylodon Pantici N. Morpho Sp. From The Turonian Of Nw Serbia, Darivojka Ljubović-Obradović, Rajka RadoičIć
Studia UBB Geologia
This note describes Coptocampylodon pantici, a new morpho species from Upper Cretaceous outcrops of the Poćuta region (NW Serbia). Based on the rudists in superincumbent calcarenites and planktonic foraminifers of the D. concavata Zone overlying the calcarenites, the shallow water “Poćuta limestone” is dated Turonian. The genus Coptocampylodon Elliott is emended.
Fanthalamia Kadiri N. Sp., A New "Sphinctozoan" Sponge From The Triassic (Carnian) Of Turkey, Baba Senowbari-Daryan, Michael Link, Diego C. García-Bellido
Fanthalamia Kadiri N. Sp., A New "Sphinctozoan" Sponge From The Triassic (Carnian) Of Turkey, Baba Senowbari-Daryan, Michael Link, Diego C. García-Bellido
Studia UBB Geologia
A new sphinctozoid sponge - Fanthalamia kadiri - is described from the Upper Triassic (Carnian) of the Antalya area, southern Turkey. This is the second species of the genus Fanthalamia found in Upper Triassic rocks of Turkey.
Upper Triassic (Norian-Rhaetian) New Thalamid Sponges From Northern Calabria (Southern Italy), Baba Senowbari-Daryan, Valeria Zamparelli
Upper Triassic (Norian-Rhaetian) New Thalamid Sponges From Northern Calabria (Southern Italy), Baba Senowbari-Daryan, Valeria Zamparelli
Studia UBB Geologia
Two new “sphinctozoan” sponges, Calabrisiphonella labyrinthica nov. gen., nov. sp. and Calabrispongia globosa nov. gen., nov. sp., are described from reef boulders derived from Triassic dolomites (“Dolomia principale“) of the Argentino valley in Northern Calabria (Southern Italy). Calabrisiphonella is an Amblysiphonella-type sponge characterized by having a complicated canal system (labyrinth-like) within the chamber walls. The structure of Calabrispongia is similar to some Paleozoic or Jurassic "Stromatoporoidea“, which are attributed to the sponges. The systemtic position of both sponges, described here, is discussed. The age of the sponge-bearing reefs represented in the boulders is Norian-Rhaetian.
Hirundoporella Dachsteinensis N. Gen., N. Sp., A New Problematic Dasycladale (Green Alga) From Upper Triassic Of The Northern Calcareous Alps, Austria, Felix Schlagintweit, Harold Lobitzer, Oskar Ebli
Hirundoporella Dachsteinensis N. Gen., N. Sp., A New Problematic Dasycladale (Green Alga) From Upper Triassic Of The Northern Calcareous Alps, Austria, Felix Schlagintweit, Harold Lobitzer, Oskar Ebli
Studia UBB Geologia
A new problematic dasycladale is described as Hirundoporella dachsteinensis nov. gen., n. sp. from the Upper Triassic bedded Dachstein Limestone of Mount Dachstein, Austria. It is characterized by individualized phloiophorous laterals, open at the ends and secondary laterals of low number arising in the middle part of the primaries. Nothing is known about the obviously thin and poorly calcified main-axis and the overall arrangement of the primaries. The microfacies is represented by a wackestone composed to about 70 % of dismembered laterals of Hirundoporella dachsteinensis n. sp.
Correlations Between The Air Pollution And The Rainfall Composition In Jiului Valley Area, Eugen Traistă, MăDăLina Ionică, Vlad Codrea, Ovidiu Barbu
Correlations Between The Air Pollution And The Rainfall Composition In Jiului Valley Area, Eugen Traistă, MăDăLina Ionică, Vlad Codrea, Ovidiu Barbu
Studia UBB Geologia
Rainfall composition is conditional on the air quality. If the air is polluted, the rainfall will be also polluted. In fact, rainfall contains the same compounds like the air as nitrites, nitrates, sulphites, sulphates, ammonia etc. Some cations like calcium, magnesium, sodium and potassium are present in rainfall because of dust. This paper presents the air qualities and the soil composition influenced by the rainfall in one of the most polluted mining areas from our country, Jiului Valley.
Facies Analysis Of The Late Cretaceous Deposits From Corni Quarry (North-Eastern Border Of Gilău Mountains), Emanoil SăSăRan, Liana SăSăRan
Facies Analysis Of The Late Cretaceous Deposits From Corni Quarry (North-Eastern Border Of Gilău Mountains), Emanoil SăSăRan, Liana SăSăRan
Studia UBB Geologia
The Late Cretaceous deposits outcropping along the northeastern border of Gilău Mountains form a NW-SE-oriented crest. The crest is delimited westwards by the crystalline formations of Baia de Arieş Nappe. Within these deposits, two distinctive sedimentary complexes could be separated: a) The Gosau-type facies formation, that can be correlated to the “Lower Gosau Subgroup” (Wagreich & Faupl, 1994), represented by alluvial/fluvial fans and shallow marine deposits; b) The flysch-type formation, that is similar with the “Upper Gosau Subgroup” (Wagreich & Faupl, 1994) and includes deep sea deposits (hemipelagites/turbidites).The syndepositional and postdepositional tectonics controlled the sedimentation and facies distribution; the shallow …
The Miocene Calcareous Nannofossils From Bistriţa Area (Transylvania, Romania), Carmen Chira, Ana-Maria Vulc
The Miocene Calcareous Nannofossils From Bistriţa Area (Transylvania, Romania), Carmen Chira, Ana-Maria Vulc
Studia UBB Geologia
The Middle Miocene (Badenian, Sarmatian and Pannonian) deposits from the region of Bistriţa, between the localities: Susenii Bârgăului, Livezile, Bistriţa, Sărata, Sărăţel, Budacu de Sus (Transylvanian Basin) have been analysed from the nannofloral point of view. The nannofossils are relatively scarce, excepting the ones related to Lower Badenian deposits. Only the fossil index for NN5 Zone – Sphenolithus heteromorphus, and for NN6 Zone – Discoaster exilis have been identified.
Considerations On The Parent Material In The Soil Developed On The Evaporite Deposits From Stana (Cluj District), Horea Bedelean
Considerations On The Parent Material In The Soil Developed On The Evaporite Deposits From Stana (Cluj District), Horea Bedelean
Studia UBB Geologia
This research concerned three profiles developed on Eocene (Priabonian) gypsum parent material from Stana (Cluj district) in order to investigate their properties. The soil and parent material samples were collected from individual horizons in each profile. Both the mineralogical and structural-textural features of the parent material (evaporitic deposits) reflect the depositional context. From a mineralogical point of view, the deposits are represented by gypsum, and anhydrite. Typical sulfate facies are present: laminitic, nodular, gypscretic, and entherolitic. Physical and mineralogical properties of the soil layers were determined in the laboratory. The field observations and the results of the analyses allowed us …
Identification Of The Source Areas For The Paleogene Turbiditic Deposits Of The Pienidian Units In Maramures, Carlo Aroldi
Identification Of The Source Areas For The Paleogene Turbiditic Deposits Of The Pienidian Units In Maramures, Carlo Aroldi
Studia UBB Geologia
The Pienides are structural units formed almost exclusively of deep-water siliciclastic deposits, Middle Jurassic-Oligocene in age, belonging of an oceanic crust-bearing domain. The Pienides form an elongate belt extending from Western Carpathians to Poiana Botizei (Maramureş, northern Romania), which represents the easternmost outcrop of these units in the Eastern Carpa-thians. Petrographic analyses on sandstones of different nappes combined with sedimentologic studies (depositional systems, palaeocurrents) allow to con-sider the Inner Dacides (forming the pre-Apulian continental margin) the most probable source unit for most of the siliciclastic successions of the Pienides. The present arrangement of the structural units, geophysical and subsurface data …
Palynology Of The Late Neogene, Intercepted In A Borehole From Cerneţi (East Of Turnu Severin), Iustinian Petrescu, Nicoleta Bican-Brișan, Cornel Meilescu, Liana Tunsoiu
Palynology Of The Late Neogene, Intercepted In A Borehole From Cerneţi (East Of Turnu Severin), Iustinian Petrescu, Nicoleta Bican-Brișan, Cornel Meilescu, Liana Tunsoiu
Studia UBB Geologia
The paper presents the results of the palynologic studies carried on the samples recovered the W1 well from Cerneţi. These rocks were assigned to Meotian and Pontian deposits. The Meotian deposits, 40 m thick are characterized by a paly-nological spectrum consisting from: Ferns (3-4%), Conifers (56-62%), Monocotyledon-ous Angiosperms (1-2%), Dicotyledonous Angiosperms (33-40%). The microflora was compared with the pollinic spectrum from the Late Meotian deposits between Teleajen and Dâmboviţa (Cioflică, 1969). The Pontian intercepted between m 112 and m 36 keeps a relatively uniform microflora: Ferns (5%), Conifers (60%), Monocotyledonous Angiosperms (1%), Dicotyledonous Angiosperms (34%). This microflora was compared with …
A Study On The Geology Of The Ţaga Region (Cluj District), Ioan MâRza
A Study On The Geology Of The Ţaga Region (Cluj District), Ioan MâRza
Studia UBB Geologia
The geological formations from Ţaga area (Cluj District) are Sarmatian in age (in outcrops) and Badenian (under surface). Lithologically, they are represented mainly by sands and sometimes fine sediments (clays, marls), interbedded with volcanic tuffs a low fossil content. The Badenian is the host of gas accumulations, concentrated in dome structures.
Aspects De L'Histoire De La Végétation Tardiglaciaire Et Holocène Dans La Région Des Subcarpates De La Courbure (Subcarpates De Buzau), Ioan TanțăU, Maurice Reille, Sorina FăRcaș, Jacques-Louis De Beaulieu
Aspects De L'Histoire De La Végétation Tardiglaciaire Et Holocène Dans La Région Des Subcarpates De La Courbure (Subcarpates De Buzau), Ioan TanțăU, Maurice Reille, Sorina FăRcaș, Jacques-Louis De Beaulieu
Studia UBB Geologia
A Late Glacial - Holocene sequence from the Bisoca peat bog (Buzăului Subcarpathians) was studied from palynological point of view. The vegetation history, supported by 12 14C dates is described since the end of the Late Glacial. At the onset of the Holocene Ulmus became established by around 9,700 B.P.; Quercus, Fraxinus, Tilia, Corylus became established almost simultaneously by around 9,500 B.P. The local establishment of Carpinus is about 6,200 B.P. Its maximum occurred since 5,000 B.P. Fagus pollen is regularly recorded since 7,000 B.P. Its absolute dominance took place at about 2,000 B.P.
Microbial Structures And Microencrusters In The Upper Jurassic - Lower Cretaceous Deposits From Buila-Vânturariţa Massif (South Carpathians), Andreea Ut̡A, Ioan I. Bucur
Microbial Structures And Microencrusters In The Upper Jurassic - Lower Cretaceous Deposits From Buila-Vânturariţa Massif (South Carpathians), Andreea Ut̡A, Ioan I. Bucur
Studia UBB Geologia
The Upper Jurassic – Lower Cretaceous limestones from Buila-Vânturariţa massif partly consisting of reef build-ups, are characterised by an important component of microbial organisms. This paper describes and illustrates some of the most important structures interpreted as having a microbial nature: “Tubiphytes” and Bacinella-type structures, cyanobacterial structures, micritic crusts, and peloidal structures. Most of these structures are related to different shallow-water environments, from intertidal, high-energy environment, to protected low energy subtidal environment.
Banatitic Magmatic And Metallogenetic Belt: Metallogeny Of The Romanian Carpathians Segment, Șerban-Nicolae Vlad, Tudor Berza
Banatitic Magmatic And Metallogenetic Belt: Metallogeny Of The Romanian Carpathians Segment, Șerban-Nicolae Vlad, Tudor Berza
Studia UBB Geologia
The Romanian Carpathians sector of the Late Cretaceous Banatitic Magmatic and Metallogenetic belt (BMMB) contains 1) plutons and volcano-plutonic complexes, i. e. calc-alkaline, I-type granitoids, with related ores; 2) shoshonitic plutons that lack economic interest. Two provinces have been delineated: the Apuseni Mts. Province in the North and the Western South Carpathians in the South. Apuseni Mts. Province is a non-porphyry environment related to more evolved (granodioritic-granitic) magmatism. It is subdivided into three zones: Vlădeasa (Pb-Zn ores of restricted metallogenetic potential); Gilău-Bihor (Fe, Bi, Mo, Cu, W, Au, Ni, Co, Pb, Zn, Ag, U, B ores / conspicuous peri-batholitic arrangement) …
The Mineralogical Characteristics Of The Hydrothermal Types Alteration From Nistru Ore Deposit, Baia Mare Metallogenetic District, Floarea Damian
The Mineralogical Characteristics Of The Hydrothermal Types Alteration From Nistru Ore Deposit, Baia Mare Metallogenetic District, Floarea Damian
Studia UBB Geologia
The hydrothermal alteration types, which have affected intrusive and volcanic rocks from Nistru ore deposit, are related to fluids composition varied in their evolution within hydrothermal systems. The early stage of the hydrothermal activity has produced extensive propylitisation and potassic alteration (orthoclase, biotite, sericite) associated with the central part of the quartz-micromonzodioritic porphyry stock. The late stage of the fluids differentiation is determined by the hydrogen-ion metasomatism (phyllic alteration, argillic alteration), characterized by a large vertical variation. The hydrogen-ion metasomatism is associated with the bor metasomatism, generated by acid solutions and at a high temperature. The vertical and lateral zoning …
The Genesis Of The Base Metal Ore Deposit From Herja, Gheorghe Damian
The Genesis Of The Base Metal Ore Deposit From Herja, Gheorghe Damian
Studia UBB Geologia
The Herja ore deposit is one of the most known of the Baia Mare Neogene metallogenetic district and is associated with a complex stock of Pannonian age. The hydrothermal alterations associated with the mineralizations are represented by: the propylitization, the argillization, the phyllic and potassic alteration. The monoascenedant character of the mineralizations is predominant. The magmatic intrusions have been sequential placed and have represented the heat, metals and hydrothermal solutions source. In the first stages of mineralization the hydrothermal solutions contain predominantly magmatic water and in the final stages the water is of connate and meteoric origin. According to the …
Preliminary Studies Of Airborne Particulate Emmisions From The Ampellum S.A. Copper Smelter, Zlatna, Romania, Ben J. Williamson, Nicolae Har, William O. Purvis, Ana Maria Rusu
Preliminary Studies Of Airborne Particulate Emmisions From The Ampellum S.A. Copper Smelter, Zlatna, Romania, Ben J. Williamson, Nicolae Har, William O. Purvis, Ana Maria Rusu
Studia UBB Geologia
Preliminary studies have been carried on the characterization of particulate emissions from the Ampellum S.A. copper smelter in the town of Zlatna, Romania. The particulates studied were collected on polycarbonate filters using air pump apparatus and on the surfaces of lichens. Mass of total suspended particulates (TSP) and PM10 varied from 19 to 230 μg/m3 and 3 to 146 μg/m3, respectively (PM10/TSP = 0.14 to 1.0), depending on wind direction and proximity to the smelter. Particulates on collection filters from a site directly downwind from the smelter have a mean equivalent spherical diameter (ESD) of 0.94 μm (s.d. 1.1) and …
Hydrothermal Breccia Pipe Structures: General Features And Genetic Criteria - Ii Phreatic Breccia, CăLin G. TăMaș, Jean-P. Milési
Hydrothermal Breccia Pipe Structures: General Features And Genetic Criteria - Ii Phreatic Breccia, CăLin G. TăMaș, Jean-P. Milési
Studia UBB Geologia
Phreatic and phreatomagmatic breccias are the two end-member styles of hydromagmatic breccias. A previous contribution deals with phreatomagmatic breccias with an emphasis on their general features and those genetic criteria that allow an accurate and rapid recognition. Phreatic breccias are presented here. Their general features, i.e. environment/ depth of formation, general form/geometry, dimensions, contacts with the host rocks, fragments, matrix, alteration, mineralization, surface connection, fluidization and facies changes were examined. Furthermore, genetic criteria, very useful in phreatic breccia recognition are summarized.
Secondary Sulfates Found In An Old Adit From Rosia Montana, Romania, Bogdan P. Onac, Daniel Vereș, Joe Kearns, Mirona Chirienco, Adrian Minuț, Radu Breban
Secondary Sulfates Found In An Old Adit From Rosia Montana, Romania, Bogdan P. Onac, Daniel Vereș, Joe Kearns, Mirona Chirienco, Adrian Minuț, Radu Breban
Studia UBB Geologia
Recent investigation on several secondary minerals formed in old mining galleries in the Cârnic district (Roşia Montană, Romania) enabled us to characterize ten minerals. Out of these ten identified minerals, the discovery of jokokuite is the first reported occurrence in the Carpathians. A second mineral identified as apjohnite represents a new occurrence in Romania. Along with these two rare minerals, some other species of the halotrichite group (pickeringite, halotrichite, apjohnite, and dietrichite), iron sulfates, and K-Al sulfates were identified. Minerals were identified using light microscopy, X-ray diffraction, infrared, and scanning electron microscopy with energy dispersive spectroscopy. The chemical composition of …
Petrology Of Badenian Ignimbrites, Gutai Mts. (Eastern Carpathians), Alexandrina FüLöP, Marinel Kovacs
Petrology Of Badenian Ignimbrites, Gutai Mts. (Eastern Carpathians), Alexandrina FüLöP, Marinel Kovacs
Studia UBB Geologia
Gutâi Mts., part of inner Carpathians volcanic arc, consist of products of felsic and intermediate volcanism. The previously known “Badenian Rhyodacitic Formation”, expression of the felsic explosive volcanism, is composed of a well-defined basal unit of ignimbrites, overlain by a sequence of resedimented volcaniclastics of similar origin, interlayered with mudstones. The petrography of ignimbrites shows matrix-supported lapilli tuffs having a heterogeneous composition with insignificant lateral variations. The juvenile components, pumice, glass shards and crystals of plagioclase, quartz and biotite are predominant; cognate nonvesicular glassy clasts are rare, unlike accidental clasts of sedimentary and metamorphic rocks which are abundant. Pyroxene andesite …
Evoluţia Omului În Cuaternar, Bogdan P. Onac, Iosif Viehmann
Evoluţia Omului În Cuaternar, Bogdan P. Onac, Iosif Viehmann
Studia UBB Geologia
No abstract provided.
The First Late Cretaceous (Maastrichtian) Dinosaur Footprints From Transylvania (Romania), Matei Vremir, Vlad A. Codrea
The First Late Cretaceous (Maastrichtian) Dinosaur Footprints From Transylvania (Romania), Matei Vremir, Vlad A. Codrea
Studia UBB Geologia
An Uppermost Cretaceous (Maastrichtian) site exposing dinosaur footprints is reported from the Sebes̡ area (Transylvanian Depression). This is the first dinoturbated layer discovered in our country, containing also numerous bones belonging to various dinosaurs. The track-site is located near Lancrăm village and provides only two quite well preserved footprints (one track). The medium sized (FL = 23,3 cm; FW = 17,8 cm; pace = 103 cm; ST = 200 cm) plantigrad-tridactyle footprints belong to Ornithopedoidei, according to their morphology. An assignment to the Iguanodontichnus CASAMIQUELA & FASOLA, 1968 group seems to be appropriate (tentatively, associated to the “Rhabdodon” iguanodontian dinosaur). …