Dissertations / Theses on the topic 'Cretaceous'
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Vaughan, Pamela Georgina. "Cretaceous Nerineacean gastropods." Thesis, Open University, 1988. http://oro.open.ac.uk/54369/.
Full textCrampton, James Scutts. "Palaeobiology of cretaceous inoceramid bivalves." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308302.
Full textMisaki, Akihiro. "Stratigraphy of mid-Cretaceous to upper Cretaceous system in the Aridagawa area, Wakayama, southwest Japan : implication of Cretaceous megafossil assemblages in the Aridagawa area." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136783.
Full textEhrendorfer, Thomas Wolfgang. "Late cretaceous (Maestrichtian) calcareous nannoplankton biogeography with emphasis on events immediately preceding the cretaceous/paleocene boundary." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/52958.
Full textVita.
Includes bibliographical references (leaves 205-218).
by Thomas Wolfgang Ehrendorfer.
Ph.D.
Morrison, Joan Olivia. "Cretaceous marine invertebrates: A geochemical perspective." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/7784.
Full textSöderblom, Fredrik. "Disparity of Early Cretaceous Lamniformes sharks." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256605.
Full textMorfologisk disparitet är ett mått på hur stor utsträckningen av morfologisk variation är. Detta mått räknas ut genom att jämföra landmärken utplacerade på bilder av föremål som ska undersökas. I detta projekt undersöktes den morfologiska dispariteten hos tänder från håbrandsartade hajar (Lamniformes) under tidig krita. Att just deras tänder undersöktes beror på att den större delen av hajars skelett är gjort av brosk vilket lätt bryts ned efter djuret avlidit. Deras tänder är dock gjorda av ben vilket har lättare att bli bevarat som fossil. Utöver detta så kan formen på tänder beskriva djurs födoval och levnadssätt. Gruppens tänder undersöktes därför även för att belysa eventuella förändringar i diet och ekologi under tidig krita. Resultatet av denna analys visar på en expansion av tandform under denna period från långa och smala tänder under Barremium till en större variation under Albium där även mer triangelformade och robusta tänder dyker upp. Detta har tolkats som en adaptiv artbildningsperiod för gruppen då både nya byten (t.ex. teleostfiskar och havs-sköldpaddor) diversifierade och uppkom samtidigt som vissa marina predatorer (ichthyosaurer och plesiosaurer) minskade i antal under denna tidsperiod. Detta ändrade troligen de selektiva trycken på håbrandsartade hajars tandmorfologi samt lämnade ekologiska nischer öppna som dessa kunde anpassa sig till vilket i sin tur ledde till expansioner i morfologisk disparitet, diet och ekologi.
Street, Christianne. "Palaeobiogeography of Early Cretaceous calcareous nannoplankton." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322002.
Full textHayes, Peta Angela. "Cretaceous angiosperm leaf floras from Antarctica." Thesis, University of Leeds, 1999. http://etheses.whiterose.ac.uk/21096/.
Full textPenny, J. H. J. "Early Cretaceous angiosperm pollen from Egypt." Thesis, University of Cambridge, 1986. https://www.repository.cam.ac.uk/handle/1810/273106.
Full textWitts, James David. "Marine biodiversity during the latest Cretaceous in Antarctica and the nature of the Cretaceous-Paleogene mass extinction." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/13742/.
Full textKiel, Steffen. "Taxonomy and biogeography of late Cretaceous gastropoda." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964103850.
Full textJeffery, Charlotte Hannah. "Echinoid evolution across the Cretaceous-Tertiary boundary." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8292.
Full textBata, Timothy Peter. "Geochemical consequences of Cretaceous sea level rise." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230129.
Full textAdams, D. P. M. "Cretaceous and Eocene geology of South Westland." Thesis, University of Canterbury. Geology, 1987. http://hdl.handle.net/10092/7117.
Full textGaylor, Jonathan. "40Ar/39Ar Dating of the Late Cretaceous." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-01017165.
Full textWoodfine, Richard Gareth. "Chemostratigraphy of Jurassic-cretaceous Italian carbonate platforms." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:03c84d34-a27d-46fd-89b0-d69a1501d888.
Full textWilson, Paul Alastair. "The evolution of Cretaceous Pacific Ocean guyots." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363102.
Full textCicchino, Alex. "Compaction of Cretaceous mudrocks offshore mid-Norway." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10639/.
Full textCraig, Robert S. "Western Australian Late Cretaceous and Cenozoic brachiopoda." Thesis, Curtin University, 1999. http://hdl.handle.net/20.500.11937/2320.
Full textCraig, Robert S. "Western Australian Late Cretaceous and Cenozoic brachiopoda." Curtin University of Technology, School of Applied Geology, 1999. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12043.
Full textgenera from the Middle Miocene deposits of the South Shetland Islands Antarctica are common to New Zealand. Nine genera, identified from the La Meseta Formation, Seymour Island, Antarctic Peninsula, are also common to New Zealand. These genera are also found in Australia. This evidence has led to the proposal that in the Late Cretaceous there was a common shelf environment from the Antarctic Peninsula to the north-west coast of Western Australia. In this area, which formed the high latitude southern circum-Indo-Atlantic faunal province, brachiopods evolved different genera and species than those in the northern hemisphere. Many then dispersed into northern areas of the Indian, Atlantic and finally Pacific Oceans.When the material from the Middle to Late Eocene of the Bremer and Eucla Basin was examined, five genera were found to be common to the Early Tertiary of the Carnarvon Basin. When comparing the species from the south-western basins and those from the south- east it was evident that similar species occur in the Middle to Late Eocene of the Bremer, Eucla, St Vincent and Murray Basins. There are some fifteen species in common. Many of these species then occur in the Late Oligocene south-eastern basins near Victoria and Tasmania as the gap between the Australia mainland and Tasmania began to open. One species that occurs in the Late Eocene of Western Australia is also described from the Late Oligocene of New Zealand.In considering the distribution of the Cenozoic brachiopods, genera first appear in the north-west of Western Australia and they then appear in chronological order in the south-western basins and south-eastern basins of South Australia, then the south-eastern basins of Victoria and Tasmania and then New Zealand. By the Late Eocene, there was a shallow marine connection between the Bight and the Tasman Sea. By the Late Oligocene this had widened and ++
Australia was finally totally separated from Antarctica.The Proto-Leeuwin Current was responsible for the distribution of the brachiopods from the north-west of Western Australia to the southern coast. Possible mechanisms for the distribution of genera to New Zealand include rafting and an extended larval stage.It has been suggested that brachiopods in Australia are distributed according to the substrate on which they settle rather than any other factor. Using the information on the distribution of brachiopods in Western Australia throughout the Cenozoic this hypothesis is examined. It is suggested that avoidance of light in the photic zone and food availability with competition with bivalves are more important factors than substrate conditions.
Smith, Elizabeth T. Biological Earth & Environmental Sciences Faculty of Science UNSW. "Terrestrial and freshwater turtles of early cretaceous Australia." Awarded By:University of New South Wales. Biological, Earth & Environmental Sciences, 2009. http://handle.unsw.edu.au/1959.4/43808.
Full textChambers, Paul Martin. "Late Cretaceous and early Palaeocene marine diatom floras." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265772.
Full textJones, Charles Edward. "Strontium isotopes in Jurassic and Early Cretaceous seawater." Thesis, University of Oxford, 1992. http://ora.ox.ac.uk/objects/uuid:fe3733bd-8e31-4bba-a78b-6d8275a0075f.
Full textHart, Stephen Francis. "Palaeoceanography and sedimentology of a mid-Cretaceous Greensand." Thesis, University of Oxford, 1991. http://ora.ox.ac.uk/objects/uuid:ac7da904-aad1-4525-8d11-9c520fc131d3.
Full textHolbourn, Ann Elizabeth Lucette. "Lower cretaceous benthic formanifera of the Indian Ocean." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336285.
Full textLittler, K. "Climate and carbon-cycling in the Early Cretaceous." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1335899/.
Full textHowe, Jodie. "Mid Cretaceous fossil forests of Alexander Island, Antarctica." Thesis, University of Leeds, 2003. http://etheses.whiterose.ac.uk/295/.
Full textMcCord, Robert Dudridge 1955. "Late Cretaceous microherpetofaunas of the Kaiparowits Plateau, Utah." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282518.
Full textBeaumont, Hazel. "Cretaceous sedimentology of the Barmer Basin, Rajasthan, India." Thesis, Keele University, 2017. http://eprints.keele.ac.uk/3530/.
Full textShafik, Samir. "Late Cretaceous, early Tertiary calcareous nannofossils from Australia." Title page, contents and summary only, 1989. http://hdl.handle.net/2440/19212.
Full textSwinburne, Nicola Helga Margaret. "The extinction of the rudist bivalves." Thesis, Open University, 1990. http://oro.open.ac.uk/54415/.
Full textShellhouse, Kody. "The Cretaceous-Paleogene Boundary Deposit in LaSalle Parish, Louisiana." Thesis, University of Louisiana at Lafayette, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10287319.
Full textThe Cretaceous-Paleogene Boundary Deposit is an impact-induced sedimentary deposit across the Gulf of Mexico basin, deposited due to the catastrophic effects of the Chicxulub Impact. The purpose of this project was to determine what the lithology and sedimentology evidence found in the Justiss Louisiana Central IPNH No. 2 well core from LaSalle Parish, Louisiana, tells us about the depositional history of the end-Cretaceous deposit and how the formation of this deposit was influenced by the effects of the Chicxulub Impact over 1000 km to the south. Project objectives were to characterize the end-Cretaceous sediments found in LaSalle Parish, Louisiana, to determine their depositional history as it relates to the Chicxulub Impact in Yucatan, Mexico, and to relate these onshore sediments to the basin-wide Cretaceous-Paleogene Boundary Deposit. A full description of the core was made and 35 thin sections from throughout the core were created and analyzed. Sedimentology evidence suggests that the end-Cretaceous chalk was deposited by seismically-induced mass wasting and later tsunami activity as a direct result of the Chicxulub Impact, and that the previously-proposed thickness of the Cretaceous-Paleogene Boundary Deposit may be overestimated.
Leier, Andrew. "The Cretaceous Evolution of the Lhasa Terrane, Southern Tibet." Diss., Tucson, Ariz. : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1340%5F1%5Fm.pdf&type=application/pdf.
Full textOakley, Daniel. "Cretaceous Angiosperm Woods; Insights into Svstematics, Ecology and Biogeography." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520229.
Full textIorio, Marina. "High resolution palaeomagnetic analyses of Cretaceous shallow water carbonates." Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/1931.
Full textMc, Cann Oonagh. "Weathering history of a late Cretaceous palaeosol, Northeast Ireland." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314014.
Full textGardner, Adele F. "An organic geochemical study of the Cretaceous/Tertiary boundary." Thesis, Open University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321559.
Full textBlonder, Benjamin, Dana L. Royer, Kirk R. Johnson, Ian Miller, and Brian J. Enquist. "Plant Ecological Strategies Shift Across the Cretaceous–Paleogene Boundary." Public Library of Science, 2014. http://hdl.handle.net/10150/621250.
Full textThe Chicxulub bolide impact caused the end-Cretaceous mass extinction of plants, but the associated selectivity and ecological effects are poorly known. Using a unique set of North Dakota leaf fossil assemblages spanning 2.2 Myr across the event, we show among angiosperms a reduction of ecological strategies and selection for fast-growth strategies consistent with a hypothesized recovery from an impact winter. Leaf mass per area (carbon investment) decreased in both mean and variance, while vein density (carbon assimilation rate) increased in mean, consistent with a shift towards ‘‘fast’’ growth strategies. Plant extinction from the bolide impact resulted in a shift in functional trait space that likely had broad consequences for ecosystem functioning.
Cook, Elizabeth. "Sedimentology and taphonomy of Wealden (Lower Cretaceous) bone accumulations." Thesis, University of Bristol, 1995. http://hdl.handle.net/1983/0cc7847c-1cd7-476f-a498-94fc76ad7847.
Full textUwins, Philippa Joanne Rashleigh. "Early to mid Cretaceous palynology of Cyrenaica, northeast Libya." Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU010065.
Full textSlipper, Ian Jeffrey. "Turonian (Late Cretaceous) Ostracoda from Dover, south-east England." Thesis, University of Greenwich, 1997. http://gala.gre.ac.uk/6302/.
Full textHildebrand, Alan Russell. "Geochemistry and stratigraphy of the Cretaceous/Tertiary boundary impact ejecta." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/186109.
Full textAyorinde, Adebayo O. "MINERALOGY AND GEOCHEMISTRY OF THE BAUXITE DEPOSITS (CRETACEOUS), WILKINSON COUNTY, GEORGIA." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/geosciences_theses/30.
Full textPahnke, P. D. "Characterization of Cretaceous Chalk Microporosity Related to Depositional Texture: Based Upon Study of the Upper Cretaceous Niobrara Formation, Denver-Julesburg Basin, Colorado and Wyoming." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5538.
Full textVaziri, Mohammad Reza. "Patterns of microfaunal occurrence across the Cenomanian-Turonian boundary in England." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363944.
Full textSHIN, JI-YEON. "TAXONOMIC DIVERSITY, FAUNAL ANALYSIS AND PALEOECOLOGY OF A MICROVERTEBRATE SITE IN THE LATE CRETACEOUS MEETEETSE FORMATION, NORTHERN WYOMING." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1118419811.
Full textMatthews, Kara. "Cretaceous Palaeogeography of Eastern Australia: Connecting the Deep Earth to Surface Processes." Thesis, School of Geosciences, 2009. http://hdl.handle.net/2123/5774.
Full textIvy, Robert. "Regional Subsurface Investigation of the Uppermost Cretaceous of Northern Louisiana." Thesis, University of Louisiana at Lafayette, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10272215.
Full textSeismic features on a seismic horizon at or near the Cretaceous-Paleogene boundary in northern Louisiana seen by Egedahl (2012), and then studied in greater depth by Strong (2013), resemble large subaqueous dunes or “mega-ripples.” Both Egedahl (2012) and Strong (2013) hypothesize that these features represent subaqueous dunes emplaced by tsunami waves caused by the Chicxulub Impact, the large bolide impact on the Yucatán Peninsula, that is widely agreed to be one of the contributing factors to the demise of the dinosaurs. Three hundred and eighteen well logs in northern Louisiana were analyzed to determine whether possible subaqueous dunes are evidenced at the Cretaceous-Paleogene boundary in this data set. These same well logs were used to develop a contour map of the top of Cretaceous and to determine the topography of the top of the Cretaceous in northern Louisiana at the time of the Chicxulub Impact. Further, the log facies of these logs were interpreted to deduce paleo-shoreline for this topography at the time of the Cretaceous-Paleogene boundary.
Smith, Robin James. "Biology and ontogeny of Cretaceous and Recent Cyprididae Ostracoda (Crustacea)." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/30470.
Full textRoss, Marcus R. "Richness trends of mosasaurs (diapsida, squamata) during the late Cretaceous /." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/dlnow/3248241.
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