Download or read book Cenozoic Cosmopolitan Deep water Benthic Foraminifera written by Frank P. C. M. Van Morkhoven and published by . This book was released on 1986 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atlas of Benthic Foraminifera written by Ann Holbourn and published by John Wiley & Sons. This book was released on 2013-04-03 with total page 1115 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date atlas of an important fossil and living group, with the Natural History Museum. Deep-sea benthic foraminifera have played a central role in biostratigraphic, paleoecological, and paleoceanographical research for over a century. These single–celled marine protists are important because of their geographic ubiquity, distinction morphologies and rapid evolutionary rates, their abundance and diversity deep–sea sediments, and because of their utility as indicators of environmental conditions both at and below the sediment–water interface. In addition, stable isotopic data obtained from deep–sea benthic foraminiferal tests provide paleoceanographers with environmental information that is proving to be of major significance in studies of global climatic change. This work collects together, for the first time, new morphological descriptions, taxonomic placements, stratigraphic occurrence data, geographical distribution summaries, and palaeoecological information, along with state-of-the-art colour photomicrographs (most taken in reflected light, just as you would see them using light microscopy), of 300 common deep-sea benthic foraminifera species spanning the interval from Jurassic - Recent. This volume is intended as a reference and research resource for post-graduate students in micropalaeontology, geological professionals (stratigraphers, paleontologists, paleoecologists, palaeoceanographers), taxonomists, and evolutionary (paleo)biologists.

Download or read book Atlas of Paleogene Cosmopolitan Deep water Agglutinated Foraminifera written by Michael Anthony Kaminski and published by . This book was released on 2005 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlas is an excellent reference on deep-water agglutinated foraminifera not only for the Paleogene but the whole Cenozoic. Its 547 pages are loaded with high quality SEMs, drawings and detailed descriptions for each of the 130 species. The first 98 pages give most valuable and uptodate information on the understanding of deep-water agglutinated foraminifera: paleoecology, biostratigraphy and history of research. The book is well written and produced on high-quality, glossy paper as a hardcover in the big format of DINA4. The price is more than reasonable for such a publication. It should be part of any library on foraminifera.

Download or read book Atlas of Benthic Foraminifera from China Seas written by Yanli Lei and published by Springer. This book was released on 2016-11-30 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas gives a comprehensive account on the benthic foraminiferal fauna in the China Seas, especially on the Bohai and the Yellow Seas. Details of about 183 species, subjected to 5 orders, 52 families and 92 genera are included. For each species there is a brief description of the morphological characteristics, synonymised names, measurements and geographical distribution worldwide, as well as a top-level elegant plate illustrated the fossil and live specimens. It could be used as a reference book for researchers working at marine biology, marine geology, micropaleontology, paleoceanography, paleobiology and related fields.

Download or read book Cenozoic Deep water Agglutinated Foraminifera in the North Atlantic written by Michael Anthony Kaminski and published by . This book was released on 1987 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cenozoic (predominantly Paleogene) "flysch-type" agglutinated foraminiferal assemblages and their modern analogs in the North Atlantic and adjacent areas have been studied to provide an overview of their spatial and temporal distribution and utility for paleoenvironmental analysis. Over 200 species of agglutinated foraminifera have been recognized in Paleogene sediments from North Atlantic and Tethyan basins. This unified taxonomic data base enables the first general synthesis of biostratigraphic, paleobiogeographic and paleobathymetric patterns in flysch-type agglutinated assemblages from upper Cretaceous to Neogene sediments in the North Atlantic. The majority of taxa are cosmopolitan, but latitudinal, temporal and depth-related trends in diversity and species composition are observed among flysch-type assemblages. Modern deep-sea agglutinated foraminiferal faunas provide an analog to fossil flysch-type assemblages and serve as models for paleoecologic studies. Core-top samples from the Panama Basin, Gulf of Mexico and Nova Scotian continental rise were examined in order to determine the habitats of modern species of agglutinated foraminifera. The ecology of modern taxa provides constraints on the paleoenvironmental significance of fossil agglutinated assemblages in the North Atlantic, and their utility for paleoceanography. Towards this end, spade core samples from a 3912 m deep station in the Panama Basin were studied to determine abundance and microhabitat partitioning among living agglutinated foraminiferal populations and the preservation of dead assemblages. The genera Dendrophrya, Cribrostomoides and Ammodiscus have epifaunal habitats and the genus Reophax is predominantly infaunal. Species of Reophax are probably responsible for fine reticulate burrows observed in xradiographs. An experiment using recolonization trays in the Panama Basin was designed to identify opportunistic species of benthic foraminifera, and to assess the rate at which a population can colonize an abiotic substrate. The most successful colonizer at this site is Reophax, while Dendrophrya displays the lowest capability for dispersal. After nine months the abundance of living individuals in sediment trays was one-tenth to one-third that of background abundance, but the faunal diversity did not differ greatly from control samples. Recolonization by benthic foraminifera is more rapid than among macrofaunal invertebrates. Modern agglutinated assemblages from the Louisiana continental slope were examined to determine changes in species composition associated with hydrocarOrganic- bon seeps. rich substrates are characterized by a decrease in astrorhizids and an increase in trochamminids and textulariids. Highly organicenriched substrates with chemosynthetic macrofauna are dominated by Trochammina glabra and Glomospira charoides. The biostratigraphy of fossil agglutinated foraminifera in the North Atlantic is based on detailed analysis of 670 samples from 14 wells and one outcrop section, and examination of additional picked faunal slides from industry wells. Local biostratigraphic schemes are established for Trinidad, Northern Spain, the Labrador Sea, Baffin Bay, and the Norwegian-Greenland Sea. These schemes are compared with existing biostratigraphic frameworks from the Labrador Margin, the North Sea, and the Polish Carpathians. A number of species show utility for biostratigraphy in the North Atlantic. Lineages which contain stratigraphically useful species include the Haplophragmoides cf. glabra - Reticulophragmium group, Hormosina, and Karreriella. Significant faunal turnovers are observed at the Paleocene/Eocene, Ypresian/ Lutetian and Eocene/Oligocene boundaries. A reduction in diversity occurs at the Paleocene/Eocene boundary in all bathyal sections studied, and agglutinated forminifera disappear entirely from abyssal low-latitude DSDP sites. In the Gibraltar Arch, the Labrador Sea and the Norwegian-Greenland Sea, the Ypresian/Lutetian boundary is characterized by a Glomospira-facies. This is attributed to a rise in the lysocline associated with increased paleoproductivity and the NP14 sealevel lowstand. The Eocene/Oligocene boundary is delimited by another major turnover and the last occurrence of a number of important taxa. At Site 647, where recovery across the Eocene/Oligocene boundary was continuous, the change from an Eocene agglutinated assemblage to a predominantly calcareous assemblage in the early Oligocene took place gradually, over a period of about 4 m.y. The rate of change of the faunal turnover accelerated near the boundary. This faunal turnover is attributed to changes in the preservation of agglutinated foraminifera, since delicate species disappeared first. Increasingly poorer preservation of agglutinated foraminifera in the late Eocene to earliest Oligocene reflected the first appearance of cool, nutrient-poor deep water in the southern Labrador Sea. The approximately coeval disappearance of agglutinated assemblages along the Labrador Margin was caused by a regional trend from slope to shelf environments, accentuated by the "mid"--Oligocene sealevel lowstand. Paleobiogeographic patterns in flysch-type foraminifera were examined in the Paleogene of the North Atlantic. In the early Paleogene, general decrease in diversity is observed from low to high latitudes and from the continental slope to the deep ocean basins. The diversity of these microfossils declines in most studied sections throughout the Paleogene. The last common occurrence (LCO) of flysch-type foraminifera in the North Atlantic exhibits a pattern of diachrony with latitude and depth. Extinctions occurred first at abyssal depths and at low latitudes. Agglutinated assemblages disappeared from the northern Atlantic region in the early Oligocene. However, the deep Norwegian-Greenland Sea served as a refuge for many species, and agglutinated assemblages persisted there until the early Pliocene. The LCO of flysch-type foraminifera may have been related to the transition from a warm, sluggish deep sea environment to a cooler, more oxygenated, thermohaline-driven deep circulation pattern caused by bipolar cooling. The paleobathymetry of Paleogene agglutinated assemblages in the North Atlantic differs from Cretaceous patterns. Shallow-water assemblages of Paleogene age contain robust astrorhizids, loftusiids and coarse lituolids, whereas deep assemblages possess delicate tubular forms, ammodiscids, and smooth lituolids. At low latitudes, upper bathyal assemblages contain abundant calcareous ataxophragmiids. Paleocene paleobathymetric patterns in the North Atlantic compare well with patterns observed in the Carpathian troughs. The utility of agglutinated foraminifera in paleoceanography is illustrated by a study of the paleocommunity structure of fossil assemblages in ODP Hole 646B on the Eirik Ridge (Labrador Sea). The synecology of benthic foraminifera in Hole 646B places constraints on the history of Denmark Straits Overflow Water over that site. Below seismic horizon "R3", a Miocene assemblage contains smooth agglutinated species with abundant Nuttalides umbonifera, indicating corrosive bottom water and tranquil conditions. A coarse agglutinated assemblage with "NADW-type" calcareous benthics is observed above the seismic horizon. This faunal turnover at horizon "R3" reflects the onset (or renewal) of significant Denmark Straits overflow at -7.5 Ma. Agglutinated species disappear between reflector "R2", and the base of the sediment drift, indicating a change in deep-water properties associated with the re-opening of the Mediterranean. The onset of drift sedimentation at the Eirik Ridge is dated at -4.5 Ma. Drift formation ceased at -2.5 Ma, concomitant with the appearance of ice-rafted sediments.

Download or read book Cenozoic Foraminifera and Calcareous Nannofossil Biostratigraphy of the Niger Delta written by Oluwafeyisola Sylvester Adegoke and published by Elsevier. This book was released on 2016-11-25 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cenozoic Foraminifera and Calcareous Nannofossil Biostratigraphy of the Niger Delta is available just as exploration and production activities are moving into the little known deep water terrain of the Niger Delta. A thorough understanding of the Cenozoic Niger Delta will improve understanding and exploration of the evolution of deeper offshore belts, help researchers strengthen and refine existing Neogene nannofossil biostratigraphic schemes for the Niger Delta region, and gain a better understanding of the relationship between nannofossil assemblage variations and paleoenvironments. The hydrocarbon reserves of the Niger Delta are an extremely valuable natural resource. Biostratigraphy and Correlation play important roles in the discovery, development and maturing of hydrocarbon fields. Calcareous nannofossils have been important tools for the stratigraphers in the Niger Delta and in recent years exploration has moved into deeper offshore areas where nannofossils are more abundant and diverse. Little has been published about the calcareous nannofossil chronostratigraphy of the Niger delta. Cenozoic Foraminifera and Calcareous Nannofossil Biostratigraphy of the Niger Delta fills the gap for earth scientists and those working in the oil and gas industry. Showcases the phylogenetic relationships of some of the principal Niger Delta marker species and their biostratigraphic and biochronologic significance Features photographs of index benthonic foraminifera and their equivalent planktonic datums as well as environmentally sensitive species used in paleobathymetric reconstruction Includes information and research that has, until now, been in the private archives of operational companies Companion website features 20+ full color stratigraphic charts and maps

Download or read book Studies in Benthic Foraminifera written by Y. Takayanagi and published by . This book was released on 1992 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lower Cretaceous Deep water Benthic Foraminifera of the Indian Ocean written by Ann E. L. Holbourn and published by . This book was released on 1997 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PaleoBase Deep Sea Benthic Foraminifera written by Ann Holbourn and published by Wiley-Blackwell. This book was released on 2012-01-24 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Benthic foraminifera have played a central role in deep-sea biostratigraphic, paleoecological, and paleoceanographical research over the last thirty years. These single-celled marine protists are important because of their geographic ubiquity, their abundance and diversity in Cretaceous to Recent deep-sea sediments, because of the relationship between occurrence of many modern species and particular water masses, and because of their utility as indicators of environmental conditions both at and below the sediment-water interface. In addition, stable isotopes obtained from deep-sea benthic foraminiferal tests provide paleoceanographers with environmental information that is proving to be of major significance in studies of global climatic change. PaleoBase: Deep-Sea Benthic Foraminifera presents the latest taxonomic revision for 300 species in the form of an illustrated, state-of-the-art relational database. Relying primarily on material collected by the Deep-Sea Drilling Project (DSDP) and Ocean Drilling Programme (ODP) for examples of characteristic deep-sea species, and containing over 1,000 colour, digital composite illustrations of unprecendented accuracy, this database represents a significant step forward in the presentation of systematic information in general, and microfossil systematics in particular. For this first time, consistent and reliable information for each species morphology, taxonomy, synonymy, bathymetery, paleoecology, chronostratigraphy, biostratigraphy is summarized in one place and in a searchable format. In addition, the database contains a morphological key for each species and citations to over 350 references from the primary scientific literature. PaleoBase: Deep-Sea Benthic Foraminifera provides earth scientists effectively instant access to all the information necessary to make accurate biostratigraphic, palaeoceanographical and palaeoecological interpretations based on benthic foraminiferal data in a structured, easy-to-use manner. The database will be invaluable to professional micropaleontologists, researchers, and students of micropalaeontology. Approximately 350 foram genera. 1000 stunning high resolution images, including SEMs. Fully searchable data on ecology, range, synonomy, biogeography etc. Full references.

Download or read book Cenozoic Record of Elongate Cylindrical Deep sea Benthic Foraminifera in the Southern and North Pacific Oceans and the Impact of the Early Eocene Global Warming Events written by Liesbeth Marie-Thérèse Karel Van Kerckhoven and published by . This book was released on 2014 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken as a contribution to trying to determine the causes of the late Pliocene-middle Pleistocene extinction of a group of elongate deep-sea benthic foraminifera with specialised apertures (the “Extinction Group”, EG). The full Cenozoic evolutionary history of the EG was documented in the Southern and North Pacific Oceans in an attempt to identify palaeoenvironmental drivers of evolution of this group. A second objective was to assess whether the EG species were impacted by the late Palaeoecene-early Eocene warm events, like the ~30 % of deep-sea benthic foraminifera that became extinct during the Palaeocene/Eocene thermal maximum (PETM). The EG consists of the families Chrysalogoniidae, Glandulonodosariidae, Stilostomellidae, Ellipsoidinidae, Pleurostomellidae, Plectofrondiculariidae and several species from the Family of Nodosariidae. In this study, I recorded 102 species of the EG, including 15 taxa that had not been recognised previously. Five of these have now been formerly described as new species – Anastomosa boomgaarti Hayward and Van Kerckhoven, 2012; Anastomosa loeblichi Hayward and Van Kerckhoven, 2012; Siphonodosaria robertsoni Hayward and Van Kerckhoven, 2012; Ellipsoidella tappanae Hayward and Van Kerckhoven, 2012; Nodosarella kohli Hayward and Van Kerckhoven, 2012. Census counts on 98 EG species in 211 faunal samples (>63 mm) between the early Palaeocene (~65.5 Ma) and middle Eocene (~40 Ma) in Southern Ocean ODP Sites 689 and 690, and North Pacific Ocean ODP Site 865 indicated that there were no extinctions of these taxa during the PETM, and only three EG species had their global lowest occurrences within 0.5 myr of the PETM. However, this extreme warm event did impact on EG faunal composition on a global scale, with Strictocostella spp. becoming less dominant to the advantage of pleurostomellids and several other EG taxa. In terms of abundances and species richness, the EG was not or only slightly impacted by the PETM, and impacts differed between regions. The increase in species richness at the start of the PETM in the Southern Ocean possibly reflects a survival mechanism of the EG to the changing environmental conditions. Census counts on 92 EG species in 160 faunal samples between the late Cretaceous (~67.9 Ma) and Pleistocene (~0.5 Ma) in Southern Ocean ODP Site 689 and North Pacific Ocean ODP Site 1211 confirmed the EG thrived during the middle Eoceneearly Oligocene and went through periods of enhanced turnover and faunal composition changes during the rapid Eocene/Oligocene cooling event and the middlelate Miocene coolings. The Oligocene announced the start of the “Tweenhouse World” during which relative abundances of the EG in the benthic foraminiferal fauna started to decrease. However, EG diversity remained high during the Oligocene worldwide, possibly as a survival mechanism to compete with the benthic foraminiferal species with new ecological strategies (phytodetritus-feeding). Miocene decreases in EG relative abundances were mostly marked at the abyssal location, where EG faunal composition also went through major changes at ~10 Ma. Both locations, at opposite sides of the world, had 52 EG species in common, including most of the most common species. Average EG species duration was ~25 myrs in the Southern Ocean, and ~27 myrs in the North Pacific Ocean, concurring with findings of previous Cenozoic studies on the EG. From these studies, I conclude that the EG was affected by both warming and cooling extreme events in the deep-sea, possibly indirectly via their food source, to which they were highly adapted with specialised apertural modifications. The repeated preferred targeting of the usually highly successful stilostomellids, suggests species from this family were most specialised and also more vulnerable to extreme changes in environmental conditions. The decline in EG abundance and diversity during the “Tweenhouse” and “Icehouse World” oceans and their eventual extinction during the Mid-Pleistocene Transition were likely related to progressive and episodic global cooling impacting on the food source of this specialised group of deep-sea benthic foraminifera.

Download or read book Pliocene and Pleistocene Benthic Foraminifera from the Central Arctic Ocean written by Brian J. O'Neill and published by . This book was released on 1979 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Late Cretaceous and Cenozoic Larger Benthic Foraminifera in Puctuated Carbonate Paleo environments of Central America and the Caribbean written by Claudia Baumgartner-Mora and published by . This book was released on 2016 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thèse. Géosciences. Environnement. 2016

Download or read book Paleocene Eocene Bathyal and Abyssal Benthic Foraminifera from the Atlantic Ocean written by R. C. Tjalsma and published by . This book was released on 1983 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alpine Late Mesozoic and Early Cenozoic Deep water Sequences and Their Agglutinated Foraminifera written by and published by . This book was released on 1989 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lagoon to Deep water Foraminifera and Ostracods from the Plio Pleistocene Kallithea Bay Section Rhodes Greece written by Tine L. Rasmussen and published by . This book was released on 2005 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Key to Cenozoic Foraminiferal Families and Genera of the Gulf Coastal Plain Province written by Harold Veral Andersen and published by . This book was released on 1971 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Late Cenozoic Benthic Forminifera written by Hans Petter Sejrup and published by . This book was released on 1994 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: