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The Planktonic Foraminiferal Response To The Paleocene Eocene Thermal Maximum On The Atlantic Coastal Plain
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Book Synopsis The Planktonic Foraminiferal Response to the Paleocene Eocene Thermal Maximum on the Atlantic Coastal Plain by : Caitlin Livsey
Download or read book The Planktonic Foraminiferal Response to the Paleocene Eocene Thermal Maximum on the Atlantic Coastal Plain written by Caitlin Livsey and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cores on the Atlantic Coastal Plain contain an expanded record of the onset of the Paleocene Eocene Thermal Maximum (PETM), an abrupt global warming event occurring 55 mya. Though a seemingly well-studied event, details about what exactly occurred during the PETM are still lacking due to differential local effects, absence of precise time resolution, and considerable dissolution of deep sea carbonates at the onset of the event. Here we present high-resolution planktonic foraminiferal assemblage data from cores from Maryland and New Jersey that show significant changes in surface ocean habitats immediately before and during the onset of the event. Assemblages immediately below the PETM show evidence for environmental stress including oligotrophy, while marked changes in assemblages at the onset of the event reflect an increase in stratification. An anomalously high abundance of the stress indicating triserial/biserial planktonic foraminifera in the late Paleocene support the increase in environmental stress directly prior to the event on the coastal plain. We observe Acarinina sibaiyaensis, a species previously thought to have originated during the PETM, below the event at both sites. The appearance of A. sibaiyaensis prior to the PETM in the Atlantic Coastal Plain suggests that it evolved on the shelf in response to oligotrophy and tracked these conditions to the open ocean during the event. Planktonic foraminifera diversified on the shelf during the PETM likely due to a combination of sea level rise, warming of the coastal waters, and consequent increased stratification, which provided new habitats. We present the occurrence of variant morphologies of several planktonic foraminifera near the peak of the carbon isotope excursion at Bass River, which may signal the response of the assemblage to environmental perturbation. These high-resolution records of planktonic foraminifera from before and during the onset of the PETM offer insights into how the local environment shifted across the event, and what that meant for the evolution of Acarinina sibaiyaensis.
Book Synopsis The Environmental Impact of the Paleocene-eocene Thermal Maximum on the Coastal Ocean by : Thomas G. Quattlebaum (Jr.)
Download or read book The Environmental Impact of the Paleocene-eocene Thermal Maximum on the Coastal Ocean written by Thomas G. Quattlebaum (Jr.) and published by . This book was released on 2004 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Planktonic Foraminifera Shell Response to the Paleocene-Eocene Thermal Maximum by : Timothy Logan Lindemann
Download or read book Planktonic Foraminifera Shell Response to the Paleocene-Eocene Thermal Maximum written by Timothy Logan Lindemann and published by . This book was released on 2013 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Paleocene-Eocene Thermal Maximum Marine Response by : Tina M. J. Nielsen
Download or read book The Paleocene-Eocene Thermal Maximum Marine Response written by Tina M. J. Nielsen and published by . This book was released on 2008 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Correlation of the Gulf and Atlantic coastal plain Paleocene and lower Eocene formtions by means of planktonic foraminifera by : Alfred R. Loeblich
Download or read book Correlation of the Gulf and Atlantic coastal plain Paleocene and lower Eocene formtions by means of planktonic foraminifera written by Alfred R. Loeblich and published by . This book was released on 1957 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Paleoecology of Planktonic and Benthic Foraminifera During the Paleocene-eocene Thermal Maximum (PETM) at San Agustin, Cuba by : Christina R. Spielbauer
Download or read book Paleoecology of Planktonic and Benthic Foraminifera During the Paleocene-eocene Thermal Maximum (PETM) at San Agustin, Cuba written by Christina R. Spielbauer and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 55 million years ago (ma) the Earth experienced an abrupt 4-8°C global temperature increase known as the Paleocene Eocene Thermal Maximum (PETM). The preservation of the PETM interval within the rock record is limited and one of the best examples within the Caribbean region is the San Agustin section in northwestern Cuba. Previous work on the San Agustin section included studies of the calcareous nannofossils as well as the planktonic foraminifera, this research expands on the original work to include benthic foraminifera. In the San Agustin section planktonic foraminiferal biostratigraphy shows a range from P4c due to the occurrence of Globanomalina pseudomenardii in the earliest samples and into E2 due to the occurrence of Globorotaloides quadrocameratus in the latest sample. This extends the planktonic foraminiferal biostratigraphy earlier than previously thought. Utilizing the identified species at the San Agustin section and Planktonic/Benthic (P/B) ratio data collected an understanding of aspects of the paleoenvironment were deduced. The San Agustin data shows a distinct increase in water depth at the site correlating with the Paleocene Eocene Thermal Maximum. Rock samples also occurred which contained very low to no foraminiferal return. In the western region of Cuba during the late Paleocene into the early Eocene the North American plate collided with the Greater Antillean Volcanic Arc. It is theorized that the low foraminiferal return is due to the active tectonics causing uplift and creating a lowstand, which lead to sediment shedding, and diluted the foraminifera within the sediments. This process of uplift and increased erosion appears to have occurred in the region multiple times before and after the PETM acting as the driving force of paleobathymetry. The exception to which is during the sea-level rise caused by the PETM warming which obscured the regional tectonics effect on the paleobathymetry.
Book Synopsis Field Excursions to the Northern Sierra Nevada of California, the Mining Districts of the Sierra Nevada, and Cretaceous and Paleocene Sediments in Maryland, USA by : Harvey Kelsey
Download or read book Field Excursions to the Northern Sierra Nevada of California, the Mining Districts of the Sierra Nevada, and Cretaceous and Paleocene Sediments in Maryland, USA written by Harvey Kelsey and published by Geological Society of America. This book was released on 2023-05-24 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Case Studies in Isotope Stratigraphy by : Michael Montenari
Download or read book Case Studies in Isotope Stratigraphy written by Michael Montenari and published by Academic Press. This book was released on 2019-11-10 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Case Studies in Isotope Stratigraphy, Volume Four in the Advances in Sequence Stratigraphy series, covers current research across many stratigraphic disciplines, providing information on the most recent developments for the geoscientific research community. This fully commissioned review publication aims to foster and convey progress in stratigraphy, including geochronology, magnetostratigraphy, lithostratigraphy, event-stratigraphy, isotope stratigraphy, astrochronology, climatostratigraphy, seismic stratigraphy, biostratigraphy, ice core chronology, cyclostratigraphy, paleoceanography, sequence stratigraphy, and more. Contains contributions from leading authorities in the field Informs and updates on all the latest developments in the field Aims to foster and convey progress in stratigraphy, including geochronology, magnetostratigraphy, lithostratigraphy, event-stratigraphy, and more
Book Synopsis Biostratigraphy, Phylogeny and Systematics of Paleocene Trochospiral Planktic Foraminifera by : William A. Berggren
Download or read book Biostratigraphy, Phylogeny and Systematics of Paleocene Trochospiral Planktic Foraminifera written by William A. Berggren and published by . This book was released on 1997 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Timing and Depositional History of Eustatic Sequences by : Charles A. Ross
Download or read book Timing and Depositional History of Eustatic Sequences written by Charles A. Ross and published by . This book was released on 1987 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biostratigraphic and Geological Significance of Planktonic Foraminifera by : Marcelle K. BouDagher-Fadel
Download or read book Biostratigraphic and Geological Significance of Planktonic Foraminifera written by Marcelle K. BouDagher-Fadel and published by UCL Press. This book was released on 2015-10-02 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of fossil planktonic foraminifera as markers for biostratigraphical zonation and correlation underpins most drilling of marine sedimentary sequences and is key to hydrocarbon exploration. The first - and only - book to synthesise the whole biostratigraphic and geological usefulness of planktonic foraminifera, Biostratigraphic and Geological Significance of Planktonic Foraminifera unifies existing biostratigraphic schemes and provides an improved correlation reflecting regional biogeographies.Renowned micropaleontologist Marcelle K. Boudagher-Fadel presents a comprehensive analysis of existing data on fossil planktonic foraminifera genera and their phylogenetic evolution in time and space. This important text, now in its Second Edition, is in considerable demand and is now being republished by UCL Press.
Book Synopsis The Paleocene Eocene Thermal Maximum in the Southern Indian Ocean by : Laura Jean Mitchell
Download or read book The Paleocene Eocene Thermal Maximum in the Southern Indian Ocean written by Laura Jean Mitchell and published by . This book was released on 2007 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Late Paleocene-early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records by : Marie-Pierre Aubry
Download or read book Late Paleocene-early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records written by Marie-Pierre Aubry and published by Columbia University Press. This book was released on 1998 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive collection of the best scholarship available on the transition between the Paleocene and Eocene epochs--when the earth experienced the warmest climatic episode of the Cenozoic era. These 21 contributions detail the major turnover among marine and terrestrial organisms that resulted from sudden global warming.
Book Synopsis Sea-surface Temperature Estimation by : C. J. Van Vliet
Download or read book Sea-surface Temperature Estimation written by C. J. Van Vliet and published by . This book was released on 1967 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: An autocorrelation analysis of six temperature records from the North Pacific and North Atlantic up to 40 years in length showed the existence of an oscillatory function with period 1 year for all the stations studied, and of another oscillatory function with period 0.5 year for most of the stations. A regression model containing annual and semiannual oscillatory terms was found to provide a good statistical fit to the observed daily temperatures. No long-term trends were detected in the sequences of annual mean temperatures, but there were significant differences among these temperatures. (Author).
Book Synopsis Deep-time Perspectives on Climate Change by : Mark Williams
Download or read book Deep-time Perspectives on Climate Change written by Mark Williams and published by Geological Society of London. This book was released on 2007 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Ecosystem Perturbations by : Simonetta Monechi
Download or read book Large Ecosystem Perturbations written by Simonetta Monechi and published by Geological Society of America. This book was released on 2007-01-01 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Changes on the North American Mid-Atlantic Shelf During the Paleocene Eocene Thermal Maximum by : Edward A. Ballaron
Download or read book Environmental Changes on the North American Mid-Atlantic Shelf During the Paleocene Eocene Thermal Maximum written by Edward A. Ballaron and published by . This book was released on 2018 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Changes on the North American Mid-Atlantic Shelf During the Paleocene Eocene Thermal Maximum Edward A. Ballaron The Paleocene-Eocene Thermal Maximum (PETM), a large hyperthermal during the Cenozoic (& sim;56 Ma) is characterized by a massive injection of depleted carbon into global reservoirs as indicated by a large negative carbon isotope excursion (CIE) of 3 & permil;-5 & permil; in marine and terrestrial sedimentary records. Previously studied open ocean (i.e., pelagic) cores have provided evidence for abrupt sea surface warming (5-10 & deg;C) and bottom water warming (4-5 & deg;C) as well as ocean acidification at the onset of the CIE. However, due to low sedimentation rates and truncation of pelagic sections via dissolution at the CIE, pelagic cores appear condensed or incomplete. Sites on the North American mid-Atlantic margin, provide a unique opportunity to examine both marine and terrestrial responses to a large magnitude climatic perturbation. Rapid and abrupt increases in the flux of siliciclastics including kaolinite to the shelf at the onset of the PETM, indicative of an enhanced hydrologic cycle, result in expanded PETM intervals allowing for higher resolution isotopic sampling. Stable isotopic and trace metal data from New Jersey sections (Millville, Ancora, Bass River and Wilson Lake) have also documented rapid warming, coastal ocean acidification and a freshening event at the onset of the CIE in agreement with evidence for an enhanced hydrologic cycle during the PETM. Maryland sections to the south (South Dover Bridge and Cambridge-Dorchester) studied here, are more proximal to the main drainage system in the Salisbury Embayment and therefore should have experienced environmental changes (salinity) to a greater degree than New Jersey sites. Here we present coupled stable isotopic (carbon and oxygen) and trace metal data (Mg/Ca) to constrain both changes in temperature as well as salinity on the Maryland mid-Atlantic shelf during the PETM. Data presented here shows a temperature increase at SDB and Cam-Dor of & sim;4-5 & deg;C for planktonic foraminifera and & sim;5-9 & deg;C for benthic foraminifera with oxygen derived temperatures being consistently larger than Mg/Ca derived temperatures. This indicates some salinity contribution to delta18O, artificially lowering oxygen derived temperatures. This is further supported by salinity calculations which display a freshening event at the onset of the CIE due to increased runoff. Also observed in this data set is a slight weakening in delta13C and delta18O depth gradients on the shelf. Changes in delta18O gradients can perhaps be attributed to greater warming at depth and a destabilization of the thermal stratification of the water column, similar to observations from New Jersey sites Millivlle and Ancora. The breakdown in vertical delta13C gradients was perhaps due to the vertical migration of mixed layer foraminifera taxa seeking refuge from warming surface waters. Another possible explanation for the change in vertical delta13C gradients is a change in upwelling patterns driven by hyperpycnal flow or changes in wind patterns driving coastal upwelling and bringing depleted delta13C to the surface.
