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Letteratura scientifica selezionata sul tema "Vincent Gulf Region Eocene"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 gennaio 2023

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Articoli di riviste sul tema "Vincent Gulf Region Eocene"

1

Sontag, Elżbieta, e Ryszard Szadziewski. "Biting midges (Diptera: Ceratopogonidae) in Eocene Baltic amber from the Rovno region (Ukraine)". Polish Journal of Entomology / Polskie Pismo Entomologiczne 80, n. 4 (1 dicembre 2011): 779–800. http://dx.doi.org/10.2478/v10200-011-0058-4.

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Biting midges (Diptera: Ceratopogonidae) in Eocene Baltic amber from the Rovno region (Ukraine) The paper presents the results of an examination of 714 biting midges (Diptera: Ceratopogonidae) preserved in Baltic amber from the Rovno deposits in Ukraine. A new species - Leptoconops rovnensis sp. n. - is described and illustrated. 29 of the fossil species reported here have already been described from other deposits of Baltic amber: 26 of these were also found in amber from the Gulf of Gdańsk and 18 in amber from Bitterfeld (Saxony). The most common genera of biting midges in Ukrainian amber are also found in amber from Bitterfeld and the Gulf of Gdańsk, and with very much the same frequencies. The results indicate that the faunas of Ceratopogonidae enclosed in amber from Rovno, Bitterfeld and the Baltic are very similar, showing that they inhabited similar palaeoenvironments in the same palaeogeographic region.

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2

Carreño, Ana Luisa, e Thomas M. Cronin. "Middle Eocene Ostracoda from Baja California Sur, Mexico". Journal of Micropalaeontology 12, n. 2 (1 dicembre 1993): 141–53. http://dx.doi.org/10.1144/jm.12.2.141.

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Abstract. One genus and six new species of ostracodes are described from the Bateque Formation on the Pacific Coast of Baja California Sur, Mexico. Planktonic foraminifers indicate a mid Eocene age and the whole assemblage is characteristic of a shallow warm-water environment. Paijenborchella mezquitalensis sp. nov. is the second record of the genus Paijenborchella from the Eocene of North America. Except for this species and the new genus Bajacythere, the ostracode association has strong affinities with those described from the lower Tertiary Gulf Coast region.

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3

Uhen, Mark D., e David Taylor. "A basilosaurid archaeocete (Cetacea, Pelagiceti) from the Late Eocene of Oregon, USA". PeerJ 8 (2 ottobre 2020): e9809. http://dx.doi.org/10.7717/peerj.9809.

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Background Basilosaurid archaeocetes are known from the Late Eocene of virtually all coastlines bearing coeval marine rocks except the North Pacific Basin, until now. Here we report on three consecutive posterior thoracic vertebrae of a large, basilosaurid archaeocete from a Late Eocene horizon in the Keasey Formation in Oregon. Methods These vertebrae were morphologically and morphometrically compared to other vertebrae of similar age from around the world. Results The specimens were determined to be different from all currently named species of fossil cetacean, but most similar to those found in the Gulf Coast region of North America. These vertebrae represent the first confirmed specimen of a Late Eocene basilosaurid from the North Pacific. These and other basilosaurids known only from vertebrae are reviewed here in the context of Late Eocene paleoceanography and cetacean evolution.

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4

Jiang, Mark M. "Middle Eocene through basal Miocene sequence bio-stratigraphy of the western Gulf Coast region". Marine and Petroleum Geology 14, n. 7-8 (novembre 1997): 855–66. http://dx.doi.org/10.1016/s0264-8172(97)00049-4.

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5

Scheibner, C., A. M. Marzouk e J. Kuss. "Maastrichtian-Early Eocene litho-biostratigraphy and palægeography of the northern Gulf of Suez region, Egypt". Journal of African Earth Sciences 32, n. 2 (febbraio 2001): 223–55. http://dx.doi.org/10.1016/s0899-5362(01)90005-3.

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6

Golubovskaya, E. V. "Specific features of the geochemistry of Eocene-Miocene rocks in the Perovskii Gulf, northern Aral region". Lithology and Mineral Resources 42, n. 3 (maggio 2007): 281–88. http://dx.doi.org/10.1134/s0024490207030078.

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7

Lin, Yani, Tianze Zhang e Kelly H. Liu. "Turbidite lobe deposits in a canyon-fill system". Interpretation 9, n. 2 (7 aprile 2021): C17—C21. http://dx.doi.org/10.1190/int-2020-0111.1.

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Geological feature: Turbidite lobe deposits in a canyon-fill system Seismic appearance: Isolated and irregularly shaped sandstone pods Alternative interpretations: Mid-channel bars in a braided channel system Features with similar appearance: Alluvial fans Formation: Lower Wilcox Group Age: Late Paleocene to Early Eocene Location: Shelf edge at the Central Gulf Coast Region of Texas Seismic data: Donated by a petroleum exploration company in Houston, Texas Analysis tools: Seismic attributes such as instantaneous phase, root-mean-square amplitude, and spectral decomposition

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8

Tucker, Annette B., e Rodney M. Feldmann. "Fossil decapod crustaceans from the lower Tertiary of the Prince William Sound Region, Gulf of Alaska". Journal of Paleontology 64, n. 3 (maggio 1990): 409–27. http://dx.doi.org/10.1017/s0022336000018643.

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Sixty-five fossil brachyuran crabs, collected from rocks of the Orca Group, Tokun Formation, and Poul Creek Formation, have been assigned to six species, five of which were described previously. One of these, Pilumnoplax hannibalanus, is reassigned to Neopilumnoplax. Morphologic descriptions of Raninoides vaderensis, Eumorphocorystes naselensis, Portunites alaskensis, and Branchioplax washingtoniana are emended. Orbitoplax plafkeri n. gen. and sp. is described from the Poul Creek Formation on Wingham Island. The diagnosis of age for the Orca Group has been problematic. However, the well-preserved brachyurans, Branchioplax washingtoniana, Neopilumnoplax hannibalanus, and Raninoides vaderensis, provide corroborative evidence for an Eocene or older age for the rocks. Alaskan decapods include species common to the entire Pacific coast north of California, as well as species endemic to Alaska.

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9

Carter, B. D., T. H. Beisel, W. B. Branch e C. M. Mashburn. "Substrate preferences of Late Eocene (Priabonian/Jacksonian) echinoids of the eastern Gulf Coast". Journal of Paleontology 63, n. 4 (luglio 1989): 495–503. http://dx.doi.org/10.1017/s0022336000019715.

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Thin sections and acetate peels of the sediment within, and adhering to the outsides of, tests of Late Eocene echinoids from the southeastern United States have proven to be useful checks on inferences from test morphology concerning substrate preference. Previous characterizations of species' sediment preferences have concentrated primarily on the functional morphology of spatangoids, and relied particularly heavily upon Recent relatives of nonspatangoids. Reassessment of the preferences of spatangoids has led to a few discrepancies between interpretations herein and those of previous workers. In addition, this study attempts a more thorough assessment of functional morphology of nonspatangoid irregular echinoids than has previously been tried.Carbonate sand-dwelling species from the Ocala Limestone (thin sections are clean grainstones) include Oligopygus, Echinolampas, Rhyncholampas, fibulariids, Durhamella, Neolaganum, Agassizia, Macropneustes, some species of Plagiobrissus and Periarchus, and most species of Eupatagus. All these have been interpreted previously as preferring clean sand. Species that preferred, or at least tolerated, significant carbonate mud in the substrate (thin sections are poorly washed grainstones and packstones) include all the regular echinoids and the irregular echinoids Schizaster, Ditremaster, Brissopsis, Brissopatagus, Amblypygus, Eurhodia, Weisbordella, Wythella, Paraster, some species of Periarchus and Plagiobrissus, and perhaps some species of Eupatagus. The last seven of these have previously been interpreted as sand-dwellers.In general, species preferring mud-rich sands are found in the upper Ocala of peninsular Florida and in the middle to upper Ocala equivalents in the rest of the Gulf Coast. Sand-dwellers are most often found in the lower Ocala strata of both regions and up into the middle Ocala in Florida. These generalizations are consistent with existing paleoenvironmental models for the region.

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10

Cotton, Laura J., Wolfgang Eder e James Floyd. "Larger foraminifera of the Devil's Den and Blue Hole sinkholes, Florida". Journal of Micropalaeontology 37, n. 1 (23 marzo 2018): 347–56. http://dx.doi.org/10.5194/jm-37-347-2018.

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Abstract. Shallow-water carbonate deposits are well-known from the Eocene of the US Gulf Coast and Caribbean. These deposits frequently contain abundant larger benthic foraminifera (LBF). However, whilst integrated stratigraphic studies have helped to refine the timing of LBF overturning events within the Tethys and Indo-Pacific regions with respect to global bio- and chemo-stratigraphic records, little recent work has been carried out in the Americas. The American LBF assemblages are distinctly different from those of Europe and the Indo-Pacific. It is therefore essential that the American bio-province is included in studies of LBF evolution, biodiversity and climate events to understand these processes on a global scale. Here we present the LBF ranges from two previously unpublished sections spanning 35 and 29 m of the upper Eocene Ocala limestone, as the early stages of a larger project addressing the taxonomy and biostratigraphy of the LBF of Florida. The study indicates that the lower member of the Ocala limestone may be Bartonian rather than Priabonian in age, with implications for the biostratigraphy of the region. In addition, the study highlights the need for multiple sites to assess the LBF assemblages and fully constrain ranges across Florida and the US Gulf and suggests potential LBF events for future integrated stratigraphic study.

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Più fonti

Tesi sul tema "Vincent Gulf Region Eocene"

1

Ye, Dong-Ping. "Gasification of South Australian lignite /". Title page, summary and contents only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09phy37.pdf.

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2

Schmidt, Rolf 1972. "Eocene bryozoa of the St Vincent Basin, South Australia - taxonomy, biogeography and palaeoenvironments". 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phs3491.pdf.

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Includes Publication list by the author as appendix A. "July 2003." Includes bibliographical references (leaves 308-324) A stratigraphically detailed taxonomic study of fossil bryozoans within the Late Eocene sediments of the St Vincent Basin, South Australia. These taxa are compared with existing knowledge of fossil and recent faunas in Australia and other regions to enhance understanding of bryozoan evolution and dispersal. Bryozoan taxa and growth forms are used to interpret the palaeoenvironments of the Eocene Vincent Basin.

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3

Schmidt, Rolf. "Eocene bryozoa of the St Vincent Basin, South Australia - taxonomy, biogeography and palaeoenvironments". Thesis, 2003. http://hdl.handle.net/2440/22001.

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Abstract (sommario):

Includes Publication list by the author as appendix A.
Includes bibliographical references (leaves 308-324)
xi, 324, [36] leaves, 61 leaves of plates : ill (some col.), maps ; 30 cm.
A stratigraphically detailed taxonomic study of fossil bryozoans within the Late Eocene sediments of the St Vincent Basin, South Australia. These taxa are compared with existing knowledge of fossil and recent faunas in Australia and other regions to enhance understanding of bryozoan evolution and dispersal. Bryozoan taxa and growth forms are used to interpret the palaeoenvironments of the Eocene Vincent Basin.
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2003?

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4

Springbett, Gavin. "Coal facies and palaeoenvironments of the middle eocene to early oligocene Bowmans and Lochiel deposits, Northern St. Vincent Basin, South Australia". 2007. http://hdl.handle.net/2440/57411.

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Title page, table of contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library.
The middle eocene to early oligocene Bowmans and Lochiel coal deposits of the northern St. Vincent Basin, South Australia have been studied to elucidate their depositional environments. These coals occur within predominantly fluvio-lacustrine transgressive system tract sequences that formed during the initial phase of basin infill. The aforementioned facies are unevenly distributed and their stratigraphic succession highlights evolutionary changes in local palaeoenvironments. Within individual seams the transition from subaquatic to topogenous forest swamps and ultimately ombrogenous conditions is most common. However, over the coal sequence as a whole, conditions evolved from exclusively terrestrial through mixed terrestrial and subaquatic to open water. Also detected were multiple rapid reversals of the water table, especially higher in the sequence, and cyclic patterns reflecting a brief basal subaquatic phase prior to the onset of sustained terrestrial conditions. These patterns suggest a fluctuating, although progressively rising, water table and a balance between accommodation and accumulation.
http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1280880
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2007

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5

Springbett, Gavin. "Coal facies and palaeoenvironments of the middle eocene to early oligocene Bowmans and Lochiel deposits, Northern St. Vincent Basin, South Australia". Thesis, 2007. http://hdl.handle.net/2440/57411.

Testo completo

Abstract (sommario):

The middle eocene to early oligocene Bowmans and Lochiel coal deposits of the northern St. Vincent Basin, South Australia have been studied to elucidate their depositional environments. These coals occur within predominantly fluvio-lacustrine transgressive system tract sequences that formed during the initial phase of basin infill. The aforementioned facies are unevenly distributed and their stratigraphic succession highlights evolutionary changes in local palaeoenvironments. Within individual seams the transition from subaquatic to topogenous forest swamps and ultimately ombrogenous conditions is most common. However, over the coal sequence as a whole, conditions evolved from exclusively terrestrial through mixed terrestrial and subaquatic to open water. Also detected were multiple rapid reversals of the water table, especially higher in the sequence, and cyclic patterns reflecting a brief basal subaquatic phase prior to the onset of sustained terrestrial conditions. These patterns suggest a fluctuating, although progressively rising, water table and a balance between accommodation and accumulation.
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2007

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6

Ye, Dong-Ping. "Gasification of South Australian lignite / by Dong-Ping Ye". Thesis, 1994. http://hdl.handle.net/2440/21498.

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