Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 19 of 19 for “"Dinoflagellate cysts"”.
-
Dinoflagellate cysts of the Gymnodiniaceae, Peridiniaceae, and Gonyaulacaceae from the Upper Cretaceous Monmouth Group, Atlantic Highlands, New Jersey
… paleoecology, and biostratigraphy of fossil dinoflagellate cysts belonging to three families (Gymnodiniaceae, Peridiniaceae, and Gonyaulacaceae) are investigated from the Campanian-Maestrichtian Mount Laurel Sand, Navesink Fonnation, and Sandy Hook Member of the Red Bank Sand of Atlantic …
-
Paleoceanography across the Pliocene–Pleistocene transition in the southern Bering Sea: dinoflagellate cysts and acritarchs from IODP Site U1341
… northern North Pacific has been analyzed for dinoflagellate cysts, acritarchs and other palynomorphs. Based on 86 samples, with a spacing equivalent to between 500 and 6000 years, this is the most stratigraphically detailed late Cenozoic marine palynological study yet undertaken in the Bering …
-
Western Pacific paleoceanography across the Early–Middle Pleistocene boundary (~773 ka, Marine Isotope Stage 19): Dinoflagellate cysts of the Chiba composite section, Japan.
… below the Matuyama– Brunhes boundary. A detailed dinoflagellate cyst (dinocyst) study from late Marine Isotope Stage (MIS) 20 to late MIS 19 provides information on paleoceanographic changes in the Western Pacific Ocean between 791 and 770 ka. During Termination IX, a decrease in heterotrophic …
-
Tracing hydrological millennial-scale cycles in the late Quaternary of the Cariaco Basin and the southern Gulf of Cádiz using coccoliths and dinoflagellate cysts
… present study demonstrates that coccoliths and dinoflagellate cysts are very useful as paleoclimatological indicators for the elucidation or a better understanding of the late Quaternary regional and global palaeoclimate. This study also reveals new insights in coccolithophore and dinoflagellate …
-
Palynological investigations of Cenomanian chalks and marls from England
… South Humberside, north-east England. The dinoflagellate cysts present accord well with previously described Cenomanian microplankton assemblages from western Europe, and are assignable to the established Litosphaeridium siphonophorum Zone of Davey (1970). Full descriptions of all …
-
Palynostratigraphy of Uppermost Albian to basal Coniacian (Cretaceous) sediments from the Western Anglo-Paris Basin
The distribution of dinoflagellate cysts in sediments of the mid Cretaceous from the western Anglo-Paris Basin are examined. Samples were collated from a range of facies types (i.e. basin margin-central basin), but particular emphasis was placed on those which represented deposition around the …
-
Palynological insights into the Mid Jurassic dinoflagellate radiation
Dinoflagellates are a diverse group of flagellated eukaryotes, the majority of which are marine plankton, and are one of the most important groups of primary producers in the world’s oceans. The dinoflagellate fossil record is based on their zygotic resting cysts; this record indicates that the …
-
Detailed studies of the Callovian and Oxfordian microplankton from the Warboys and Warlingham boreholes
… Chapter four concerns the taxonomy of dinoflagellate cysts and acritarchs in terms of morphology and terminology. Chapter five constitutes the systematic part. From a total of 48 microplankton genera, some 120 dinoflagellate species and 18 acritarch species are described. 9 species are …
-
Palynostratigraphy of the Eocene Little River Section, Grays Harbor County, Washington
… 32 were pollen and spores, 24 fungal remains, 18 dinoflagellate cysts, and 3 miscellaneous micro fossils.</p> <p>Based upon the stratigraphic distribution of 21 palynomorphs, three informal palynologic assemblage biozones were recognized. The oldest zone, Zone 1, of late early or early middle …
-
Dinoflagellate paleoecology and biostratigraphy of the Middle Eocene Tallahatta and Lisbon Formations from the Baldwin County, Alabama, Core
This study documents the occurrence of dinoflagellate cysts from the Middle Eocene Tallahatta and Lisbon Formations in the Baldwin County, Alabama, Core. This is part of a larger project being conducted by the ARCO Depositional Sequence Analysis Group to gather paleontological, sedimentological, …
-
The Aral Sea : a palaeoclimate archive
… palynological analyses, conducted on both dinoflagellate cysts assemblages and pollen grains, evidenced prominent environmental change in the Aral Sea and in the catchment area. The diversity and the distribution of dinoflagellate cysts within the assemblages characterized the sequence of …
-
Paleogene-Early Neogene palynomorphs from the Eastern Equatorial Atlantic and Southeastern Florida, USA: Biostratigraphy and paleoenvironmental implications
… were studied for their palynological contents. Dinoflagellate cysts were mainly utilized for age refinement and to detect subtle changes in paleoenvironment and paleoclimate during the Paleocene-Early Eocene (ODP Hole 959D and Alo-1 Well) and Late Eocene-Early Miocene (ODP Hole 959A and …
-
Applied palynology: Multidisciplinary case studies from Egypt, Gulf of Mexico and USA
… case studies, palynomorphs (spores, pollen, dinoflagellate cysts, and algae) have been utilized to define zones of hydrocarbon potential, reconstruct paleoenvironmental and paleoclimatic conditions, constrain the ages of the studied rock sequences, and express its potential as a replacement …
-
The petrology of clay-rich beds in the Turonian (Upper Cretaceous) of the Anglo-Paris Basin
… seems to reflect fluctuations in sea-level. Dinoflagellate cysts and the calcareous nannofauna do not appear to have been affected by marl band formation. In contrast, benthie foraminifera reflect the change in suface conditions with a marked decrease in the epifauna, and little change in the …
-
A palynological investigation of Upper Jurassic basal Cretaceous sediments from England, France and Iberia
… for sourcing oil. Microplankton assemblages (dinoflagellate cysts and acritarchs are recorded and described from the English and French sections which are well dated upon independent palaeontological evidence. The various taxa constituting the microplankton assemblages are - described and in …
-
The sedimentology, palaeoecology and stratigraphy of cretaceous rocks in N.W. Scotland
… Biostratigraphic evidence (based primarily on dinoflagellate cysts and foraminifera) indicates a latest-Albian to IVlid-Cenomanian age for the Morvern Greensand Formation; a Late Cenomanian age for the Gribun Chalk Formation, and an Early - IVliddle Turonian age for the Str2thaird Limestone …
-
Controls on the geometry, stratigraphic distribution and quality of coals of Middle to Upper Jurassic strata in eastern Australia
… of tidally-influenced facies, acritarchs and dinoflagellate cysts (a first for Jurassic-aged strata in the basin) indicate periods of brackish water conditions. Marine incursions may have come from the north and the east during time of high eustatic sea-level during the Jurassic. …
-
Dinoflagellate cyst record and paleoceanography through the Pliocene–Pleistocene transition at ODP Site 1143, southern South China Sea
… reveals a well preserved and relatively diverse dinoflagellate cyst (dinocyst) record. Generally, the cysts of phototrophic (gonyaulacoid) taxa increased during interglacials whereas those of heterotrophic (protoperidinioid) taxa increased during glacials, particularly around the pronounced …
-
Palynology, palynofacies and hydrocarbon potential of the Cretaceous rocks of northern Egypt
… spores, gymnosperm<br/>and angiosperm pollen and dinoflagellate cysts. Three new palynostratigraphically<br/>defined age divisions are described for the lower part of the Abu Tunis 1x<br/>succession, and a more refined biostratigraphy is made for the upper part of the<br/>sequence. In contrast, …