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Journal articles on the topic "Callovian"

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Callomon, John H. "Callovian." Geobios 27 (December 1994): 757–60. http://dx.doi.org/10.1016/s0016-6995(94)80242-4.

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Courtinat, Bernard. "Review of the dinoflagellate cyst <i>Stephanelytron</i> Sarjeant 1961 emend." Journal of Micropalaeontology 18, no. 2 (December 1, 1999): 169–82. http://dx.doi.org/10.1144/jm.18.2.169.

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Abstract. The stratigraphic distribution of the Late Callovian to Early Oxfordian dinoflagellate cyst Stephanelytron Sarjeant 1961 emend provides new evidence pertaining to its evolution. Middle and Upper Callovian times favoured the development of speciations to a short-ranging Stephanelytron community with corona(s) in ventral–posterior position (Stephanelytron brontes, S. callovianum, S. ceto and S. tabulophorum) from eurytopic species with antapical coronas (S. caytonense, S. membranoidium, S. redcliffense and S. scarburghense). The former group of species (except S. tabulophorum) may represent an example of peripatric speciation from an unfavourable mutation. The reduced stratigraphic range gives the appearance of an endemic population. The genus Lagenadinium Piel, 1985 is a junior synonym of Stephanelytron Sarjeant, 1961. A new emendation of Stephanelytron, two new combinations (S. callovianum and S. membranoidium) and two new species (?S. brontes and S. ceto) are proposed.
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Hoelstad, Torsten. "Palynology of the Middle Jurassic Lower Graben Sand Formation of the U-1 well, Danish Central Trough." Danmarks Geologiske Undersøgelse Serie A 14 (December 1, 1986): 1–25. http://dx.doi.org/10.34194/seriea.v14.7033.

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Twentyone sidewall core samples from the lower 56 metres of the Lower Graben Sand Formation in the U-1 well are described with respect to their kerogen content and microflora in order to gain a better understanding of the depositional environment and the age relations. Based on e.g. the inconsistent dinoflagellate cyst occurrences, marginal marine conditions are concluded. The dinoflagellate cysts Pareodinia prolongata, Acanthaulax senta, Scriniodinium crystallinum, Energlynia acollaris, Wanaea thysanota and Hystrichogonyaulax cladophora and the recovered palynomorph assemblage in general permit an age determination as follows: 21 m Callovian undifferentiated, 7.9 m latest Middle Callovian - earliest Late Callovian, 6.1 m latest Late Callovian and 21 m latest Late Callovian? - earliest Early Oxfordian.
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Callomon, John H. "The ammonite succession in the Middle Jurassic of East Greenland." Bulletin of the Geological Society of Denmark 40 (June 3, 1993): 83–113. http://dx.doi.org/10.37570/bgsd-1994-40-03.

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The ammonite sequence in the Middle Jurassic of central East Greenland is the most complete and detailed known in the Arctic so far, and has become a standard of reference for the whole of the Bo real Faunal Province. It is made up of some 37 distinguishable assemblages that characterize a time-ordered succession of discrete faunal horizons. This succession has been pieced together from over 80 recorded sections in Jameson Land lying between Scoresby Sund and Kong Oscars Fjord (70-72°N). It forms the biostratigraphic basis for the regional chronostratigraphy. The faunal assemblages are listed and described by reference to published illustrations in the literature. Faunas 1-23 are of pre-Callovian age and have no elements in common with their contemporaries in the classical regions of Europe. They still cannot be correlated with the European standard pre-Callovian chronozonations. Most of them must be of Bathonian age, although the earliest of them could well be, and probably are, even still Upper Bajocian. The Bathonian-Callovian boundary most probably lies some­where in faunas 24-26, which closely resemble those of the keppleri horizon at the base of the Callovian. Faunas 27-35 span the rest of th􀁋 Lower Callovian, while faunas 36 and 37 are the only evidence of Middle and Upper Callovian. The ammonites from Jameson Land previously described by Spath (I 932) are revised and assigned to their correct horizons. Of 11 new species, only one is formally named: Kepp/erites vardekloeftensis sp. nov., of latest Bathonian age.
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Majidifard, Mahmoud Reza. "Callovian ammonites from Northeastern Iran." Revista Brasileira de Paleontologia 21, no. 1 (May 4, 2018): 17–46. http://dx.doi.org/10.4072/rbp.2018.1.02.

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Brovtsyn, A. K., and G. S. Chershneva. "Aerodynamic concentration of callovian clay." Refractories 37, no. 10 (October 1996): 358–61. http://dx.doi.org/10.1007/bf02238694.

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Larsen, Michael, and Finn Surlyk. "Shelf-edge delta and slope deposition in the Upper Callovian – Middle Oxfordian Olympen Formation, East Greenland." Geological Survey of Denmark and Greenland (GEUS) Bulletin 1 (October 28, 2003): 931–48. http://dx.doi.org/10.34194/geusb.v1.4695.

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The Upper Bajocian – Upper Volgian succession of the Jameson Land Basin in East Greenland forms an overall transgressive–regressive cycle. The Upper Callovian – Middle Oxfordian Olympen Formation represents the first regressive deposits after maximum flooding in the Middle to early Late Callovian. The formation was deposited during two southwards progradational phases separated by a major drowning event in the Early Oxfordian. The first phase was marked by incoming of massive slope and base-of-slope sand (Athene Member), but the delta front and top did not reach the area of present-day exposure. The second phase was initiated by deposition of a thick mud succession (Hades Member) indicating that the delta had shifted far to the north during the drowning event. Southwards progradation of the delta was heralded by gully erosion and the deposition of lenticular bodies of massive slope sand; on this occasion, medium- and largescale cross-bedded sand of the delta front and top (Zeus Member) reached the area. The boundary between Middle–Upper Callovian mudstones in the upper part of the underlying Fossilbjerget Formation and the Upper Callovian Athene Member sandstones formed at the turn-around point between sea-level rise and fall. The Athene Member sandstones are interpreted as an undifferentiated falling stage – lowstand systems tract and span a sequence boundary. The top of the Athene Member is the basinal correlative of the transgressive surface. The basal few metres of the overlying Hades Member mudstones represent the transgressive systems tract and a level with organic-rich mudstones is interpreted to represent the maximum flooding zone. The remainder of the Hades Member and the slope sandstones are assigned to the highstand systems tract. The succeeding cross-bedded delta front sandstones of the Zeus Member are placed in the falling stage systems tract and their sharp base is interpreted as a marine regressive surface of erosion. Comparison of this history with published sea-level curves suggests that the short term changes may be eustatic in origin including the Middle Callovian maximum flooding (K. jason – lower P. athleta Chronozones), Late Callovian regression (P. athleta – Q. lamberti Chronozones), latest Callovian – Early Oxfordian flooding (Q. mariae – C. cordatum Chronozones) and late Early – Middle Oxfordian regression (C. densiplicatum Chronozone).
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Walley, C. D. "Depositional history of southern Tunisia and northwestern Libya in Mid and Late Jurassic time." Geological Magazine 122, no. 3 (May 1985): 233–47. http://dx.doi.org/10.1017/s0016756800031447.

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AbstractThe good exposures of virtually undeformed Callovian and Oxfordian strata along the Djeffara escarpment of southern Tunisia and northwestern Libya have allowed analysis of regional depositional history during this time.A number of lithostratigraphic problems are considered. In Tunisia, the Foum Tatahouine Formation is subdivided into members and in Libya some of the stratigraphic issues are clarified. A correlation between the two sequences is proposed. The widely claimed aeolian origin for the Libyan Chameau Mort Sandstone is rejected.The depositional patterns of the Callovian and Oxfordian strata are described in the context of Mid and Late Jurassic sedimentation in the eastern Ghadames basin of the African craton. After a regressive Bathonian sequence, transgressive conditions commenced in Early Callovian time. In a series of continental–marine cycles, this transgressive sequence culminated in widespread shallow, restricted-marine micritic deposition. A regression in Late Callovian time resulted in emergence marked by a thin but widespread calcrete horizon. In Mid? Oxfordian time a renewed transgression brought in open marine, high-energy, shallow-water carbonates. Later, regressive conditions returned, leading to increasing restriction, and latest Jurassic time saw the first signs of the fluvio-deltaic deposition that was to dominate the region in Early Cretaceous time.
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Veenstra, E. "RIFT AND DRIFT IN THE DAMPIER SUB-BASIN, A SEISMIC AND STRUCTURAL INTERPRETATION." APPEA Journal 25, no. 1 (1985): 177. http://dx.doi.org/10.1071/aj84016.

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Quality improvements in marine reflection seismic data over recent years have lead to a better understanding of the relationships between seismo-stratigraphical sequences present in the Dampier Sub-basin and those in adjacent areas. The "drift-onset" unconformity, which separates the syntectonic rift sequence from the post-tectonic drift sequence, can now be seismically recognised as a single unfaulted surface. Previously this unconformity was interpreted to be faulted. In places this surface had some 2400 m of palaeotopography in the form of an escarpment. This escarpment was formed by tectonic movements and subsequent erosion some time in the Callovian, probably as a consequence of the opening of the Indian Ocean.The presence of Callovian and Upper Jurassic marine sands on the Rankin Platform shows that the Rankin Platform was in places submerged during Callovian and Upper Jurassic times. Furthermore, the Dampier Sub- basin must have been more than 2000 m deep immediately following the causal tectonic event. The escarpment was rapidly buried, with 1200 m of sediments locally deposited by the end of the Callovian and was finally buried by Neocomian times. Thereafter the Rankin Platform and Dampier Sub-basin have subsided.
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Halder, K., and S. Bardhan. "The fleeting genus Cymatonautilus (Nautiloidea): new record from the Jurassic Charl Formation, Kutch, India." Canadian Journal of Earth Sciences 33, no. 7 (July 1, 1996): 1007–10. http://dx.doi.org/10.1139/e96-076.

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Cymatonautilus is a new record from Kutch with precise stratigraphic background. Being a temporally restricted but geographically widely distributed genus, Cymatonautilus is considered as a fleeting taxon. It cryptically appeared during the latest early Callovian and survived only up to the middle Callovian, but dispersed rapidly through a long belt on both sides of the Tethys. Its systematic position is revised, and derivation from paracenoceratid lineage is suggested.
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Dissertations / Theses on the topic "Callovian"

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Page, K. N. "The stratigraphy and ammonites of the British Lower Callovian." Thesis, University College London (University of London), 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535646.

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Labelle, Daniel G. P. "Allostratigraphic analysis of the Upper Jurassic, Callovian-Oxfordian, Roseray Formation, southwestern Saskatchewan." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ30496.pdf.

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Noe`, Leslie Francis. "A taxonomic and functional study of the Callovian (Middle Jurassic) Pliosauroidea (Reptilia, Sauropterygia)." Thesis, University of Derby, 2001. http://hdl.handle.net/10545/211770.

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The short-snouted Callovian pliosaurs, Liopleurodon ferox SAUVAGE 1873, Simolestes vorax ANDREWS 1909 and Pachycostasaurus dawni CRUICKSHANK, MARTILL and NOE 1996, of the Peterborough Member, Oxford Clay Formation are of considerable palaeontological importance. The restricted geographical and temporal range, exceptional preservation, relative abundance, and easy removal of matrix, make the Callovian pliosaurs excellent subjects for detailed study. Skull material is known from all Callovianpliosaurs, but has been little studied, and much excellent material remains undescribed. The taxonomy of the short-snouted Callovian pliosaurs is thus in need of critical revision. Cranial functional morphology goes largely undiscussed, and the palaeoecological position of the short-snouted genera is poorly understood. The taxonomy of the short-snouted Callovian pliosaurs is critically revised, and the genera Liopleurodon, Simolestes and Pachycostasaurus shown to be monospecific and taxonomically valid. The holotype material for Liopleurodon ferox is poor (a single tooth) but exhibits sufficient characteristics for taxonomic definition. The holotype material of Simolestes vorax and Pachycostasaurus dawni, an incomplete skull and postcranial skeleton in each case, is taxonomically robust. Never before attempted cranial reconstructions, in multiple views, are presented for each genus. Detailed cranial, mandibular and dental descriptions of Liopleurodon and Simolestes are presented, with description of many new, newly recognised and previously unfigured specimens. The presence of nasals is definitively demonstrated for the first time in any pliosaur genus. The likely presence of a lacrimal in Liopleurodon indicates the relatively plesiomorphic position of the pliosaurs within the Plesiosauria. The skull ofPachycostasaurus is described for the first time, although in less detail than the other two genera due to relatively poor preservation. The teeth of all three genera are described in detail, and a number of new parameters, such as crown stoutness and crown curvature, presented. A comprehensive structural and functional analysis indicates the skull is highly akinetic, and firmly internally braced. The superficial sutural pattern is adapted to resist deformation imposed by muscular action, particularly when feeding. The inference of strongly procumbent teeth in the short-snouted Callovian pliosaurs is shown to be based on the incorrect interpretation of badly crushed specimens. The skull musculature is reconstructed for the first time in a Callovian pliosaur, and an analysis of the lever systems exhibited by the jaws and muscles is presented. The adductor musculature is interpreted as a `geared' system providing mechanical advantage no matter where the teeth strike the prey, rather than the `snap and hold system' previously interpreted in non-Callovian pliosaurs. An analysis of tooth form, preserved stomach contents, and comparison with an existing model allows interpretation of prey preference and ecological position. Liopleurodon, and possibly Pachycostasaurus, are interpreted as shake and bolt feeding, high order predators of large boned, vertebrate prey. Simolestes is reinterpreted as an invertebrate feeder, possibly twist feeding, with a short, wide, high skull and a powerful bite. Comparison is made to the long-snouted genus Peloneustes which is considered ichthyophagous. The potential problems associated with a predominantly invertebrate diet are explored. Simolestes is interpreted as gaining a considerable electrolyte load through a diet of invertebrates. To avoid physiological problems Simolestesp robably possessedla rge, orbitally positioned, cephalic salt secreting glands. All Callovian pliosaur genera probably also possessed salt secreting glands, but of smaller size
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Williams, Ann Cerys. "Palaeoecological and palaeoenvironmental variations in the Callovian, Oxfordian and Kimmeridgian (Jurassic) of Britain." Thesis, University of Leicester, 1988. http://hdl.handle.net/2381/34984.

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Carbon and oxygen stable isotope analyses have been performed on well preserved calcareous fossils from Callovian, Oxfordian and Kimmeridgian (Jurassic) mudrock facies of Britain. Assemblages of ammonites, bivalves and belemnites have been sampled from the Lower Oxford Clay of the English Midlands, the Kimmeridge Clay of Wiltshire and the Dorset coast, and the Staffin Shale Formation of Skye. In this way it was hoped to cover a wide stratigraphic and geographic range. Carbon isotope stratigraphy reveals a positive excursion in the Callovian, which is interpreted as an oceanic anoxic event. On the basis of palaeontological and sedimentological evidence, the Callovian has long been viewed as a time of oxygen deficiency. These views are supported by this, the first detailed isotopic study of the stage. A comparison of the 613 C values of the ammonites and infaunal bivalves reveals a major anomaly, in that the latter show very positive values. Tentative suggestions are put forward to account for this. Oxygen isotope (and hence palaeotemperature) stratigraphy reveals a cooling through the Upper Callovian and Oxfordian, consistant with the "Boreal spread" of Arkell (1956), with a warming into the Lower Kimmeridgian. Palaeotemperature variations within individual assemblages raise important questions about palaeoecology. On the basis of this data, it appears that bivalves previously considered to be nekto - or pseudoplanktonic did not occupy the upper reaches of the water column. Suggestions have been made that ammonites were benthic rather than nektonic, but the evidence presented here implies that this was not the case. Relative to the rest of the assemblage, belemnite temperatures tend to be low, highlighting their migratory nature. Boreal ammonites are found to precipitate their shells in cooler waters than those from the Tethyan Realm. The significance of this, and other factors, in terms of controls on provinciality are discussed.
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Collin, Pierre-Yves. "Environnements, géochimie et processus de formation de séries condensées au Callovo-Oxfordien : du Bassin de Paris à des considérations globales." Dijon, 2000. http://www.theses.fr/2000DIJOS092.

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Toland, Christopher. "A sequence stratigraphic framework for the Upper Callovian-Lower Valanginian of the Arabian Plate." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241880.

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Multidisciplinary analysis of 10 newly-designated sequence stratigraphic reference sections has led to the recognition of 14 candidate bounding surfaces in the Upper Callovian - Lower Valanginian of the Arabian Plate. The spinosum Subzone, upper Remane Zone-B and late Early Valanginian bounding surfaces define two megasequences, within which 3rd Order depositional sequences can be identified and locally correlated. Across the Arabian platform most 3rd Order sequences comprise transgressive-regressive couplets bounded by Type I disconformities. Lowstand deposits are confined to relatively minor lowstand wedges, incised valley-fills and secondary condensed sections. Platform aggradation:progradation ratios are in the order of 1:4, reflecting limited on-shelf accommodation and prolific highstand shedding. The interplay between 2nd and 3rd Order sealevel changes has had a profound impact on sequence architecture. 3rd Order sequences deposited during 2nd Order sealevel rise are characterised by enhanced transgressive systems tracts (TST), well-developed MFS's and starved highstand systems tracts (HST); the associated lowstand systems tracts (LST) are represented by cryptic non-karstified palaeoexposure surfaces across the interfluves, lowstand wedges along the flanks of intra-shelf depressions and secondary condensed sections along the former platform slope. In contrast, 3rd Order sequences deposited during 2nd Order sealevel fall have starved TST's, subdued MFS's and enhanced TST's; the associated LST's are represented by mature paleokarsts across the interfluves, and major incised valley-fills along the former shelf break. MFS's have been dated using ammonites, capionellids and calcareous dinocysts. These datums have been used to constrain the age of genetic sequences and their associated (benthic) biotas. This has resulted in revised stratigraphic ranges for several key taxa.
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Jennings, George R. III. "Facies Analysis, Sequence Stratigraphy and Paleogeography of the Middle Jurassic (Callovian) Entrada Sandstone: Traps, Tectonics, and Analog." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4083.

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The late Middle Jurassic (Callovian) Entrada Sandstone has been divided into two general facies associations consisting primarily of eolian sandstones in eastern Utah and "muddy" redbeds in central Utah. Sedimentary structures within the redbed portion are explained by the interfingering of inland sabkha, alluvial, and eolian depositional systems. A complete succession from the most basinward facies to the most terrestrial facies in the Entrada Sandstone consists of inland sabkha facies overlain by either alluvial or eolian facies. Where both alluvial and eolian facies interfinger, alluvial facies overlain by eolian facies is considered a normal succession. Sequence boundaries, often identified by more basinward facies overlying more landward facies, are observed in the Entrada Sandstone and are extrapolated for the first time across much of Utah, including both the eolian-dominated and redbed-dominated areas. Using these sequence boundaries as well as recent tephrochronologic studies, three time correlative surfaces have been identified in the Entrada. Based on the facies interpretations at each surface, five paleogeographic reconstructions and five isopach maps have been created, illustrating two major intervals of erg expansion and the location of the Jurassic retroarc foreland basin's potential forebulge. Eolian (erg-margin) sandstones pinch-out into muddy redbeds creating combination traps, as evidenced by dead oil (tar) and bleached eolian sandstone bodies within the Entrada. The Entrada Sandstone is a world-class analog for similar systems, such as the Gulf of Mexico's Norphlet Sandstone, where eolian facies grade into muddy redbed facies.
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Sabau, Andrea. "Mécanismes d’interaction du nickel et de l´europium avec la calcite." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4003/document.

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Dans le contexte de l’évaluation de la sûreté d’un stockage de déchets radioactifs en site géologique profond, les réactions de sorption sont un des principaux processus à prendre en compte pour prédire la migration des radionucléides. Ce travail est axé sur deux éléments: l´Eu(III) comme analogue des certains actinides trivalents et le Ni(II) en tant que produit d’activation. La calcite a été choisie comme solide d´étude en tant que composant des argilites du Callovo-Oxfordien. Notre étude combine des expériences de type batch avec des techniques spectroscopiques (SLRT, RBS et MEB-EDXS) pour élucider les mécanismes qui se produisent à l’interface Eu(III) / Ni(II) – calcite. Pour obtenir une meilleure compréhension des systèmes, avant de commencer les expériences de sorption, la chimie en solution de l’Eu(III) et du Ni(II) a été systématiquement étudiée. La calcite a montré une forte rétention de l'Eu(III), quelle que soit la concentration initiale, le temps de contact et la pression partielle de CO2. Ni(II) est également aisément retenu par la calcite, mais la rétention est dépendante de ces deux paramètres. Les résultats de désorption indiquent une réversibilité partielle pour Ni(II). La SLRT a montré l’influence de la concentration et du temps de contact sur l’interaction de l’Eu(III) avec la calcite. Avec l’aide de la RBS et de la MEB/EDX, elle a permis de discriminer entre différents mécanismes tels que la précipitation de surface, la formation de complexes de surface de sphère interne et l'incorporation. La RBS a démontré l'incorporation de l'Eu(III) dans la calcite jusqu’à une profondeur de 250 nm, contrairement au Ni(II) qui lui reste situé en surface
In the context of the safety assessment of an underground repository for nuclear waste, sorption reactions are one of the main processes to take into account to predict the migration of the radionuclides. This work is focused on two elements: Eu(III) as an analogue of trivalent actinides and Ni(II) as activation product. Calcite was chosen as adsorbent due to its presence in Callovian-Oxfordian argillites. Our study combines batch experiments with spectroscopic techniques (TRLFS, RBS and SEM-EDXS) to elucidate the mechanisms occurring at Eu(III)/Ni(II) calcite interface. To obtain a better understanding on the systems, before starting sorption experiments, aqueous chemistry of Eu(III) and Ni(II) was carefully investigated. Macroscopic results showed a strong retention of Eu(III) on calcite, no matter the initial concentration, contact time and CO2 partial pressure. Ni(II) was also readily sorbed by calcite, but the retention was influenced by contact time and concentration. Time-dependent sorption experiments showed a marked and slow increase of retention upon a long time range (up to 4 months).Desorption results indicated a partly reversible sorption for Ni(II). TRLFS highlighted the influence of initial concentration and contact time on the interaction of Eu(III) with calcite. With the help of RBS and SEM-EDXS, it enabled to discriminate between different mechanisms like surface precipitation, inner-sphere complexation and incorporation. RBS showed incorporation of Eu(III) into calcite up to 250 nm, contrary to Ni(II) which was located at the surface
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Dossett, Toby S. "The First 40Ar/39Ar Ages and Tephrochronologic Framework for the Jurassic Entrada Sandstone in central Utah." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5315.

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The first 40Ar/39Ar ages of the Middle Jurassic Entrada Sandstone were derived from tephra beds found in central Utah. Eight air fall ash beds in the Entrada Sandstone, with 40Ar/39Ar biotite ages ranging from 168.1 ± 0.2 to 160.8 ± 0.2 Ma, help to establish the age of Entrada deposition. They were also used to create the first chronostratigraphic divisions within the mudstone-dominated Entrada Sandstone. Statistical cluster analysis of chemical data from electron microprobe analyses of phenocrysts were used as a second line of evidence to test absolute age and stratigraphic correlations. The first direct correlations of two distinct air fall ash beds within Jurassic rocks were correlated using three criteria: (1) stratigraphic position, (2) absolute ages, and (3) mineral chemistry. These tephra beds were identified and correlated across significant lateral distances (~40 km) of the San Rafael Swell in central Utah, and one can be correlated farther southwest to Cannonville, Utah (~160 km) using absolute age relationships. This latter tephra bed allows for stratigraphic correlation across significant facies and thickness changes thereby establishing a regional framework that future studies can use to make more accurate and precise litho- and sequence stratigraphic correlations. Absolute ages from a tephra bed ~20 m below the J-3 unconformity provide a lower age boundary for formation of the J-3 surface. Mega- and microfossil assemblages in the overlying Curtis Formation together with the radiometric ages reported in this study indicate that the age of the Callovian-Oxfordian boundary in the 2004 geologic time scale (161.2 ± 4.0 Ma) is more correct than the current boundary age (163.5 ± 1.1 Ma) in the 2012 geologic time scale.
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Cook, Preston Scott. "Sedimentology and Stratigraphy of the Middle Jurassic Preuss Sandstonein Northern Utah and Eastern Idaho." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6206.

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The purpose of this study is to analyze the sedimentology and stratigraphy of the Middle Jurassic Preuss Sandstone and re-evaluate past sedimentological interpretations. The Preuss is located in northern Utah, western Wyoming and eastern Idaho and is stratigraphically equivalent to the Entrada Sandstone, which is Callovian in age (Dossett et al., 2014). This study is the first attempt at 1) a sequence stratigraphic framework, 2) a petroleum system analysis and 3) an extraterrestrial analog study for the Preuss. This study frames the Preuss within three broad facies groups: marine, coastal and terrestrial. The marine group includes the open marine and restricted marine facies with associated subfacies, the coastal group includes coastal sabkha and associated subfacies, and the terrestrial group includes alluvial, inland sabkha and eolian facies with associated subfacies. Three sections in northern Utah and one section in eastern Idaho compromise the focus of this study. The three Utah sections were measured and described, and samples were collected from two Utah sections and the Idaho section. The Preuss Sandstone was deposited in an asymmetrical retroarc basin, consequently the Preuss thickens from the east towards west-central Utah and the Jurassic Elko highlands. The deposits are mostly terrestrial, which is in accord with recent sedimentological interpretations, but at odds with the old paradigm, which postulates that the Entrada and Preuss were largely tidal in origin. There are marine transgressions within the trough of the retroarc basin, and the transgressions affect terrestrial sedimentary patterns. During marine incurstions, alluvium shed off the highlands is confined west of the seaway, and does not prograde east of the trough until all the available accommodation is filled. The Preuss was deposited during a complete third-order sequence-stratigraphic cycle that lies within the Lower Zuni II second-order lowstand. The Preuss Sandstone can be used as an outcrop analog for ancient and modern environments both here on Earth and on other planetary bodies. The petroliferous Norphlet Formation along the U.S. Gulf Coast was deposited in an environment very similar to the Preuss, but the Waltherian succession of facies might be slightly different. Likewise, the facies present in the Preuss are analogous to modern arid environments, such as the Persian Gulf. Furthermore, the alluvial, sabkha, eolian and shallow marine facies of the Preuss are highly similar to facies observed in ancient Martian environments and modern environments on Saturn's moon, Titan.
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Books on the topic "Callovian"

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Cox, B. M. English Callovian (Middle Jurassic) perisphinctid ammonites. London: Palaeontographical Society, 1988.

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Cox, B. M. English Callovian (Middle Jurassic) perisphinctid ammonites. London: Palaeontographical Society, 1988.

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Witte, L. J. Ostracods from Callovian to Ryazanian strata ("Upper Jurassic") in the Central North Sea Graben (Netherlands offshore). Haarlem, The Netherlands: Rijks Geologische Dienst, 1994.

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Poulton, T. P. Zonation and correlation of Middle Boreal Bathonian to Lower Callovian (Jurassic) ammonites, Salmon Cache Canyon, Porcupine River, Northern Yukon. Ottawa, Canada: Geological Survey of Canada, 1987.

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5

Chevet, P. Les oursins fossiles du Callovien de la Sarthe et des confins de l'Orne. Le Mans: Section minéralogique du C.E. Renault, 1989.

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Enay, R. Les faunes d'ammonites de l'oxfordien au tithonien et la biostratigraphie des Spiti-shales (callovien supérieur-tithonien) de Thakkhola, Népal Central. Villeurbanne: U.F.R. des Sciences de la Terre, Université Claude-Bernard-Lyon 1, 2009.

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Cariou, Elie. Les Reineckeiidae (Ammonitina, Callovien) de la Téthys occidentale: Dimorphisme et évolution : étude à partir des gisements du centre-ouest de la France. Villeurbanne: Département des sciences de la terre, Universite Claude-Bernard, 1985.

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A, Vadet, Nicolleau P, Pineau J. P, and Société d'histoire naturelle du Boulonnais., eds. Echinedes du Callovien de la Sarthe et de l'Orne. Boulogne-sur-mer: La Société, 1996.

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Book chapters on the topic "Callovian"

1

Bansal, Udita, Santanu Banerjee, Gaurav Chauhan, Maxim Rudmin, Dipima Borgohain, and Anjali Upadhyay. "Geochemistry of Callovian Ironstone in Kutch and Its Stratigraphic Implications." In Mesozoic Stratigraphy of India, 215–39. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71370-6_7.

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Hirsch, Francis, Howard R. Feldman, Fayez Ahmad, Mena Schemm-Gregory, and Mark A. Wilson. "Correlation of the Middle Jurassic (Callovian) Formations Across the Dead Sea Rift." In Springer Geology, 659–63. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_126.

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Larson, Neal L. "Deformities in the Late Callovian (Late Middle Jurassic) Ammonite Fauna from Saratov, Russia." In Cephalopods Present and Past: New Insights and Fresh Perspectives, 344–74. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6806-5_16.

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Pellenard, Pierre, Romain Tramoy, Marine Cornuault, Emmanuelle Pucéat, Anna-Chiara Bartolini, Emilia Huret, Mathieu Martinez, Dominique Fortwengler, Didier Marchand, and Jacques Thierry. "Carbon and Oxygen Isotope Signals from the Callovian–Oxfordian in French Sedimentary Basins." In Springer Geology, 865–67. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_163.

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Ahmad, Sajjad, Abdul Wahab, Suleman Khan, Muhammad Sadiq, Kamil Qureshi, and Zaid Khan. "Integrated Sequence Stratigraphy of the Middle Jurassic (Bajocian-Callovian) Chiltan Formation in the Lower Indus Basin, Pakistan." In Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas, 167–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01452-0_40.

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Touahria, Abdia, and Abbes Sebane. "Paleobathymetric Influence on the Distribution of Ammonite and Foraminifer Settlements in the Callovian of the Saïda Region (Western Algeria)." In Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas, 75–78. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01452-0_18.

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Xing, Yu-zhong, Chun-qiu Guo, Mu-wei Cheng, Hui-ting Yang, Hai-dong Shi, and Peng-yu Chen. "Flow Unit Classification and Characterization of Callovian-Oxfordian Carbonate Reservoir: Bereketli-Pirgui Gas Field, the Right Bank of Amu Darya." In Springer Series in Geomechanics and Geoengineering, 2328–37. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_211.

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Fortwengler, Dominique, Didier Marchand, Jacques Thierry, and Pierre Pellenard. "Thuoux and Saint-Pierre d’Argençon Sections (Subalpine Basin, Southeastern France): Case Studies of Ammonite Biostratigraphy for the Potential Candidate Callovian–Oxfordian GSSP." In Springer Geology, 243–46. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_49.

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Gardin, Silvia. "Calcareous Nannofossil Biochronology Around the Callovian–Oxfordian Boundary of Three Potential GSSP Candidate Sections: Thuoux, Savournon, and Saint-Pierre d’Argençon (Southeastern France)." In Springer Geology, 247–50. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_50.

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Cheng, Mu-wei, Yu-zhong Xing, Chun-qiu Guo, Hai-dong Shi, and Peng-yu Chen. "Determination of Cutoff of Effective Porosity of Callovian-Oxfordian Carbonate Rocks in Central Block B in the Amu Darya Right Bank Area." In Springer Series in Geomechanics and Geoengineering, 2041–52. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0761-5_193.

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Conference papers on the topic "Callovian"

1

Vahrenkamp, V., and A. Al Mansoori. "Callovian to Valanginian Chemostratigraphy of the Eastern Arabian Plate Margin." In Fourth Arabian Plate Geology Workshop. Netherlands: EAGE Publications BV, 2012. http://dx.doi.org/10.3997/2214-4609.20142777.

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Patel, Satish, and Jaquilin Joseph. "Deepening upward sequence of Callovian-Oxfordian Gangta bet, Wagad, Eastern Kachchh, India." In 1st Annual International Conference on Geological & Earth Sciences. Global Science Technology Forum, 2012. http://dx.doi.org/10.5176/2251-3361_geos12.14.

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"Siberian Late Bathonian and Callovian Cardioceratids (Ammonoidea) Shell Shape and Rib Style Ontogeny." In Interexpo GEO-Siberia. Siberian State University of Geosystems and Technologies, 2018. http://dx.doi.org/10.18303/2618-981x-2018-2-128-135.

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Shamonin, Egor S., Oksana S. Dzyuba, Valery G. Knyazev, Olga S. Urman, Boris N. Shurygin, Egor K. Metelkin, and Petr A. Yan. "The upper boundary of the chekurovskii formation in the stratoregion (Lena river lower reaches): litho– and biostratigraphic criteria." In Недропользование. Горное дело. Направления и технологии поиска, разведки и разработки месторождений полезных ископаемых. Экономика. Геоэкология. Федеральное государственное бюджетное учреждение науки Институт нефтегазовой геологии и геофизики им. А.А. Трофимука Сибирского отделения Российской академии наук, 2020. http://dx.doi.org/10.18303/b978-5-4262-0102-6-2020-027.

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Abstract:
New paleontological and lithological data characterizing the upper boundary of the Chekurovskii Formation are considered for the stratoregion located in the lower reaches of the Lena River, northern Siberia. We propose to accept this boundary at the bottom of a sandy bed with pebbles, considering the latter to be basal sandstones of an overlying transgressive sequence. Taking into account ammonite records, we can conclude that the boundary corresponds to a level within the Upper Bathonian Catacadoceras barnstoni Zone. The predominantly silt–sized sediments lying above (uppermost Bathonian? – Lower Callovian) can be treated an analogue of a lower part of the Innokent’evka Formation recognized in adjacent facial region.
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Shkor, A., V. M. Shcherbanenko, O. L. Yakovlev, and K. N. Zverinskiy. "Prediction of Geological Structure Callovian Upper- Jurassic Deposits on the Basic of 3D Seismic Data." In 2nd EAGE St Petersburg International Conference and Exhibition on Geosciences. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609-pdb.20.p107.

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Eltom, Hassan, Luis A. Gonzalez, Eugene C. Rankey, Stephen T. Hasiotis, and Dave Cantrell. "MIDDLE – UPPER JURASSIC (UPPER CALLOVIAN TO LOWER KIMMERIDGIAN) CARBON ISOTOPE CHEMOSTRATIGRAPHY FROM CENTRAL SAUDI ARABIA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-286324.

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El Asmi, K., M. Soussi, H. Ben Ismail, P. Hantzpergue, R. Enay, and C. Mangold. "Mesozoic Sedimentary Record of Southern Tunisia and Sea-Lavel Change – The Late Callovian Ghomrassen Carbonate Platform." In 1st EAGE North African/Mediterranean Petroleum & Geosciences Conference & Exhibition. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.8.t045.

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M. Kalinina, L., V. A. Kontorovich, and M. V. Solovyev. "Key sections of Callovian-Volgian deposits in the junction zone of Kaymysov arch and the Nyurolka megadepression." In 5th EAGE International Scientific and Practical Conference and Exhibition on Engineering and Mining Geophysics. European Association of Geoscientists & Engineers, 2009. http://dx.doi.org/10.3997/2214-4609.20147284.

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Koliabina, I., V. Shestopalov, and N. Kasteltseva. "Anomalous groundwater-rocks interactions for conditions of the Cenomanian-Callovian aquifer exploited by the Obolon water intake wells in Kyiv." In Geoinformatics. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.20215521027.

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Koshliakova, T., O. Koshliakov, O. Dyniak, and I. Koshliakova. "Tritium content as indicator of Cenomanian-Callovian groundwater complex state changes as a result of long-term operation within Kyiv city." In Geoinformatics. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.20215521053.

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Reports on the topic "Callovian"

1

Wilhem, Caroline. Maps of the Callovian and Tithonian Paleogeography of the Caribbean, Atlantic, and Tethyan Realms: Facies and Environments. Geological Society of America, February 2014. http://dx.doi.org/10.1130/2014.dmch017.

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Poulton, T. P. Zonation and correlation of middle boreal bathonian to lower callovian (jurassic) ammonites, Salmon Cache Canyon, Porcupine River, northern Yukon. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/122457.

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