Cenozoic Cosmopolitan Deep Water Benthic Foraminifera
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Cenozoic Cosmopolitan Deep Water Benthic Foraminifera
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Author : Frank P. C. M. Van Morkhoven
language : en
Publisher:
Release Date : 1986
Cenozoic Cosmopolitan Deep Water Benthic Foraminifera written by Frank P. C. M. Van Morkhoven and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Benthos categories.
Cenozoic Cosmopolitan Deep Water Benthic Foraminifera
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Author : Frank P. C. M. Van Morkhoven
language : en
Publisher:
Release Date : 1983
Cenozoic Cosmopolitan Deep Water Benthic Foraminifera written by Frank P. C. M. Van Morkhoven and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Benthos categories.
Atlas Of Benthic Foraminifera
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Author : Ann Holbourn
language : en
Publisher: John Wiley & Sons
Release Date : 2013-04-03
Atlas Of Benthic Foraminifera written by Ann Holbourn and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-03 with Science categories.
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.
Cenozoic Deep Water Agglutinated Foraminifera In The North Atlantic
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Author : Michael Anthony Kaminski
language : en
Publisher:
Release Date : 1987
Cenozoic Deep Water Agglutinated Foraminifera In The North Atlantic written by Michael Anthony Kaminski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Foraminifera categories.
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.
Atlas Of Paleogene Cosmopolitan Deep Water Agglutinated Foraminifera
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Author : Michael Anthony Kaminski
language : en
Publisher:
Release Date : 2005
Atlas Of Paleogene Cosmopolitan Deep Water Agglutinated Foraminifera written by Michael Anthony Kaminski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
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.
Proceedings Of The Ocean Drilling Program
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Author : Ocean Drilling Program
language : en
Publisher:
Release Date : 1991
Proceedings Of The Ocean Drilling Program written by Ocean Drilling Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Borings categories.
Lower Cretaceous Deep Water Benthic Foraminifera Of The Indian Ocean
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Author : Ann E. L. Holbourn
language : en
Publisher:
Release Date : 1997
Lower Cretaceous Deep Water Benthic Foraminifera Of The Indian Ocean written by Ann E. L. Holbourn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Nature categories.
Evolution And Environment In Tropical America
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Author : Jeremy B. C. Jackson
language : en
Publisher: University of Chicago Press
Release Date : 1996-12-15
Evolution And Environment In Tropical America written by Jeremy B. C. Jackson and has been published by University of Chicago Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-12-15 with Science categories.
How were the tropical Americas formed? This ambitious volume draws on extensive, multidisciplinary research to develop new views of the geological formation of the isthmus linking North and South America and of the major environmental changes that reshaped the Neotropics to create its present-day marine and terrestrial ecosystems. Recent discoveries show that dramatic changes in climate and ocean circulation can occur very quickly, and that ecological communities respond just as rapidly. Abrupt changes in the composition of fossil assemblages, formerly dismissed as artifacts of a poor fossil record, now are seen as accurate records of swift changes in the composition of ocean communities. The twenty-four contributors use current work in paleontology, geology, oceanography, anthropology, ecology, and evolution to paint this challenging portrait of rapid environmental and evolutionary change. Their conclusions argue for a revision of existing interpretations of the fossil record and the processes—including invading Eurasian peoples—that have produced it.
Atlas Of Benthic Foraminifera From China Seas
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Author : Yanli Lei
language : en
Publisher: Springer
Release Date : 2016-11-30
Atlas Of Benthic Foraminifera From China Seas written by Yanli Lei and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-30 with Science categories.
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.
Mesozoic Biotas Of Scandinavia And Its Arctic Territories
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Author : B.P. Kear
language : en
Publisher: Geological Society of London
Release Date : 2016-06-02
Mesozoic Biotas Of Scandinavia And Its Arctic Territories written by B.P. Kear and has been published by Geological Society of London this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-02 with Science categories.
Scandinavia and its Arctic territories of Svalbard and Greenland represent geographical regions with a long history of Mesozoic palaeontology. However the last few decades have witnessed a surge of new discoveries, especially from the famous Triassic and Late Jurassic Lagerstätten of East Greenland and Spitsbergen in the Svalbard Archipelago, together with the Late Cretaceous strata of southern Sweden and UNESCO World Heritage locality at Stevns Klint in Denmark; the latter recording one of the most complete terminal Mesozoic rock successions known globally. Collectively, these deposits encompass the spectrum of Mesozoic biotic evolution from the explosive radiation of marine faunas after the Permian-Triassic extinction and seminal specialization of amniotes for life in the sea, to the Late Triassic–Jurassic domination of the land by dinosaurs and Cretaceous development of modern terrestrial floras and marine ecosystems. This volume authored by leading experts in the field encapsulates key aspects of the latest research, and will provide a benchmark reference for future investigations into the Scandinavian Mesozoic world.