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Articles 31 - 60 of 211
Full-Text Articles in Physical Sciences and Mathematics
Tabasosphaera Pustulosa Nov. Gen., Nov. Sp., A Microproblematicum (Foraminifer?) From The Upper Triassic (Norian-Rhaetian) Reef Limestone Of Nayban Formation (Ne Iran), Baba Senowbari-Daryan
Tabasosphaera Pustulosa Nov. Gen., Nov. Sp., A Microproblematicum (Foraminifer?) From The Upper Triassic (Norian-Rhaetian) Reef Limestone Of Nayban Formation (Ne Iran), Baba Senowbari-Daryan
Studia UBB Geologia
A microproblematicum with calcaerous test, Tabasosphaera pustulosa nov. gen., nov. sp., a hollow spherical microfossil with pustule-like elements on the outer surface, is described from Upper Triassic (Norian-Rhaetian) reef limestones exposed near the town of Ali-Abad, south of Tabas (northeast Iran). Tabasosphaera is an endobiotic organism living within the cavities of other organisms, such as brachiopods, worm tubes, or in sponge spongocoels. The systematic position of Tabasosphaera, its interspecific association and the fossil assemblage of which it makes part is discussed. Most probably Tabasosphaera represents a foraminifer belonging to the group Lagenina.
Comparison Of Some Morpho-Anatomical Features At Fossil Vegetal Species And Their Actual Correspondent Species, Gabriel C. Corneanu, Mihaela Corneanu, Rodica Bercu
Comparison Of Some Morpho-Anatomical Features At Fossil Vegetal Species And Their Actual Correspondent Species, Gabriel C. Corneanu, Mihaela Corneanu, Rodica Bercu
Studia UBB Geologia
The values of some morpho-anatomical features (the size and shape of the epidermic cells of the leaves, as well as the size and features of the stomata) recorded in some fossil vegetal species and their actual correspondent species were analysed. These differences offer information about the evolution process. In the case of the analysed species (Ginkgo sp., Taxus sp., Magnolia sp. and Buxus sempervirens), two hypotheses concerning the genetic mechanisms involved in evolution and in the speciation processes or in the adaptation to the environmental conditions can be considered. These genetic mechanisms are: the multiplication of genomes and the process …
Upper Cretaceous Rudist-Bearing Deposits From The Eastern Border Of The Gilau Mountains (Corni Section, Hasdate): Palaeoecological Remarks, Liana SăSăRan, Emanoil SăSăRan, Ioan I. Bucur
Upper Cretaceous Rudist-Bearing Deposits From The Eastern Border Of The Gilau Mountains (Corni Section, Hasdate): Palaeoecological Remarks, Liana SăSăRan, Emanoil SăSăRan, Ioan I. Bucur
Studia UBB Geologia
Along the eastern border of the Gilău Mountains crop out carbonate deposits which were formed during the Late Cretaceous (Santonian-Campanian). These deposits are characterized by a significant presence of rudists and were formed on the border of a narrow marine shelf. The typical feature is represented by the dominance of the coral-rudist associations. The paleontological study of these deposits revealed the presence of four evolutionary stages when corals, rudists and red calcareous algae stabilised and colonised the sediment depending on the relative sea level evolution. All the evolutionary stages have been included into an idealised ecological sequence.
Lower Cretaceous Limestones From The Northern Part Of Padurea Craiului (Osoiu Hill And Subpiatra Sections): Biostratigraphy And Preliminary Data On Microbial Structures, Hyam Daoud, Ioan I. Bucur, Emanoil SăSăRan, Ioan Cociuba
Lower Cretaceous Limestones From The Northern Part Of Padurea Craiului (Osoiu Hill And Subpiatra Sections): Biostratigraphy And Preliminary Data On Microbial Structures, Hyam Daoud, Ioan I. Bucur, Emanoil SăSăRan, Ioan Cociuba
Studia UBB Geologia
Two sections have been measured within the Lower Cretaceous deposits from the northern part of Pădurea Craiului: Osoiu Hill section and Subpiatră section. Thin sections representing more than 180 samples allowed us to present some results on the biostratigraphy, facies succession and the role of microbial structures in the genesis of these limestones. The Osoiu Hill section is dominated by fenestral limestones formed in the intertidal or in the shallow subtidal zone. Their formation is dominantly related to microbial mats. Based on foraminiferal assemblages we attribute a Lower Barremian age to these limestones. The succession in the Subpiatra section is …
The Mesozoic Carbonate Deposits From The Borehole 6042 Deleni (Transylvanian Depression), Ioan I. Bucur, Marcel-Adrian Piteiu, Emanoil SăSăRan
The Mesozoic Carbonate Deposits From The Borehole 6042 Deleni (Transylvanian Depression), Ioan I. Bucur, Marcel-Adrian Piteiu, Emanoil SăSăRan
Studia UBB Geologia
The borehole 6042 Deleni is among the few wells located in the central part of the Transylvanian Depression that crossed the rocks in the basement. Among these, the Mesozoic deposits were cross-cut along 916 m. Based on the investigations carried out on core samples from the Mesozoic deposits three carbonate units attributed to the Late Oxfordian -Tithonian (?Neocomian) have been separated. A preliminary evaluation of the terrigenous and carbonate-terrigenous deposits overlaying the carbonate ones indicated an Aptian-Albian, respectively Senonian age. Considerations on the paleoenvironment of the Mesozoic deposits studied are also presented.
Anomalinoides Dividens Bioevent At The Badenian/Sarmatioan Boundary – A Response To Paleogeographic And Paleoenvironmental Chnages, Sorin Filipescu
Anomalinoides Dividens Bioevent At The Badenian/Sarmatioan Boundary – A Response To Paleogeographic And Paleoenvironmental Chnages, Sorin Filipescu
Studia UBB Geologia
Recent investigations on the microfauna at the Badenian / Sarmatian boundary (Middle Miocene) showed interesting characters of the Anomalinoides dividens foraminifera assemblages. Several taxonomic aspects are considered in order to clarify the meaning of different stratigraphic approaches. A possible planktonic or pseudo-planktonic life of the species is suggested by micropaleontologic, paleogeographic and paleoenvironmental data.
Nouvelles Contributions A La Connaisance De L'Histoire De La Vegetation Holocene Des Monts Rodnei (Carpates Orientales), Ioan TanțăU
Nouvelles Contributions A La Connaisance De L'Histoire De La Vegetation Holocene Des Monts Rodnei (Carpates Orientales), Ioan TanțăU
Studia UBB Geologia
New Contributions to the Knowledge of the Holocene Vegetation History of Rodnei Mountains. Two sequences originating from one peat bog in Poiana Ştiol (Rodnei Mts.) were pollen analyzed. The vegetation history is described since the Atlantic period. In this period the vegetation is dominated by Picea together with Corylus, Ulmus and Alnus viridis. The components frequencies of the Quercetum mixtum (Quercus, Fraxinus, Tilia, Corylus) rarely exceed 10%. The vegetation of the Subboreal period is dominated by the Carpinus and that of the Subatlantic is dominated by Fagus. Picea pollen is well represented belong the entire sequences.
A Middle Miocene Dolphin From Domasnea (Caransebes-Mehadia Miocene Basin), Vlad Codrea, Vasile Serețan
A Middle Miocene Dolphin From Domasnea (Caransebes-Mehadia Miocene Basin), Vlad Codrea, Vasile Serețan
Studia UBB Geologia
A small-sized dolphin humerus originating from a drill core sample collected from a borehole located at Domaşnea (Middle Miocene Caransebeş-Mehadia Basin, South Carpatians) was found. This dolphin is assigned to Kentriodontidae family. The level the fossil originated from is Late Volhynian-Early Bessarabian (Sarmatian s. str.), probably located either to the top of Globu Craiovei Formation, or to the lowermost Petnic Formation succession. The bone is comparable with similar discoveries reported from Tăşad and Cluj-Napoca, both located in the inner Carpatian area. This new Kentriodontidae locality proves the large geographic extension of these dolphins in the Sarmatian Paratethys.
Vashegyite From The Gaura Cu Musca Cave (Locvei Mountains, Romania): A New And Rare Phosphate Occurrence, B.P. Onac, J. Kearns, L. Zaharia
Vashegyite From The Gaura Cu Musca Cave (Locvei Mountains, Romania): A New And Rare Phosphate Occurrence, B.P. Onac, J. Kearns, L. Zaharia
Studia UBB Geologia
No abstract provided.
Note On A Meteor Fall Near The Oradea Fortress At The End Of The Xviith Century, Mihai Georgița
Note On A Meteor Fall Near The Oradea Fortress At The End Of The Xviith Century, Mihai Georgița
Studia UBB Geologia
During the preparation of a new siege of the Austrian imperial army upon the Oradea fortress - still occupied by the Turks, an astronomical event was noticed by the high rank officers. At the end of a long war report forwarded by general Veterani to Emperor Leopold II on the 20th of April 1692, a brief version of a note by general Auersperg on this meteor fall was also included. There he mentioned about a “fire ball” that was noticed in the skies on April 8th around 10 p.m., that went beyond the blockade, fortress and the army forefront, and …
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.