Marci M Robinson, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 54
Shelf ecosystems along the U.S. Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: Insights into the stratigraphic architecture Shelf ecosystems along the U.S. Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: Insights into the stratigraphic architecture
The Paleocene-Eocene Thermal Maximum (PETM) is the most pronounced global warming event of the early Paleogene related to atmospheric CO2 increases. It is characterized by negative δ18O and δ13C excursions recorded in sedimentary archives and a transient disruption of the marine biosphere. Sites from the U.S. Atlantic Coastal Plain show an additional small, but distinct δ13C excursion...
Authors
Monika Doubrawa, Peter Stassen, Marci M. Robinson, Tali Babila, James Zachos, Robert P. Speijer
Very high Middle Miocene surface productivity on the U.S. mid-Atlantic shelf amid glacioeustatic sea level variability Very high Middle Miocene surface productivity on the U.S. mid-Atlantic shelf amid glacioeustatic sea level variability
The Miocene Climatic Optimum (MCO) provides important insights into how the climate system operates under elevated temperatures and atmospheric CO2 levels. Few western North Atlantic paleotemperature or paleoecological records exist from the MCO, despite their importance for understanding both regional and global climate dynamics. Here we present quantitative MCO paleoecological data...
Authors
Marci M. Robinson, Harry J. Dowsett, Timothy D. Herbert
Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
The chronology of the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) remains disputed, hampering complete understanding of the possible trigger mechanisms of this event. Here we present an astrochronology for the PETM carbon isotope excursion from Howards Tract, Maryland a paleoshelf environment, on the mid-Atlantic Coastal Plain. Statistical evaluation of variations in calcium content...
Authors
Mingsong Li, Timothy J. Bralower, Lee R. Kump, Jean Self-Trail, James C. Zachos, William D. Rush, Marci M. Robinson
Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM) is recognized by a major negative carbon isotope (δ13C) excursion (CIE) signifying an injection of isotopically light carbon into exogenic reservoirs, the mass, source, and tempo of which continue to be debated. Evidence of a transient precursor carbon release(s) has been identified in a few localities, although it remains equivocal whether...
Authors
Tali L. Babila, Don E Penman, CD Standish, Monica Doubrawa, Tim J Bralower, Marci M. Robinson, Jean Self-Trail, Robert P. Speijer, Peter Stassen, Gavin L Foster, James C. Zachos
The Yorktown Formation: Improved stratigraphy, chronology and paleoclimate interpretations from the U.S. mid-Atlantic Coastal Plain The Yorktown Formation: Improved stratigraphy, chronology and paleoclimate interpretations from the U.S. mid-Atlantic Coastal Plain
The Yorktown Formation records paleoclimate conditions along the mid-Atlantic Coastal Plain during the mid-Piacenzian Warm Period (3.264 to 3.025 Ma), a climate interval of the Pliocene in some ways analogous to near future climate projections. To gain insight into potential near future changes, we investigated Yorktown Formation outcrops and cores in southeastern Virginia, refining the
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley, Timothy D. Herbert
Shallow marine ecosystem collapse and recovery during the Paleocene-Eocene Thermal Maximum Shallow marine ecosystem collapse and recovery during the Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM), the most well-studied transient hyperthermal event in Earth history, is characterized by prominent and dynamic changes in global marine ecosystems. Understanding such biotic responses provides valuable insights into future scenarios in the face of anthropogenic warming. However, evidence of the PETM biotic responses is largely biased towards...
Authors
Skye Y Tian, Moriaki Yasuhara, Huai-Hsuan M Huang, Fabien L. Condamine, Marci M. Robinson
Microfossils from Calvert Cliffs give us clues to the future warmer climate Microfossils from Calvert Cliffs give us clues to the future warmer climate
No abstract available.
Authors
Seth R Sutton, Marci M. Robinson, Stephen J. Culver, David J. Mallinson, Martin A Buzas, Harry J. Dowsett
Miocene neritic benthic foraminiferal community dynamics, Calvert Cliffs, Maryland, USA: Species pool, patterns and processes Miocene neritic benthic foraminiferal community dynamics, Calvert Cliffs, Maryland, USA: Species pool, patterns and processes
The presence/absence and abundance of benthic foraminifera in successive discrete beds (Shattuck “zones”) of the Miocene Calvert and Choptank formations, exposed at the Calvert Cliffs, Maryland, USA, allows for investigation of community dynamics over space and time. The stratigraphic distribution of benthic foraminifera is documented and interpreted in the context of sea-level change...
Authors
Stephen J. Culver, Seth R Sutton, David J. Mallinson, Martin A Buzas, Marci M. Robinson, Harry J. Dowsett
Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function
Stationarity of environmental preferences is a primary assumption required for any paleoenvironmental reconstruction using fossil materials based upon calibration to modern organisms. Confidence in this assumption decreases the further back in time one goes, and the validity of the assumption that species temperature tolerances have not changed over time has been challenged in Pliocene...
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley
Ostracod eye size: A taxonomy-free indicator of the Paleocene-Eocene Thermal Maximum sea level Ostracod eye size: A taxonomy-free indicator of the Paleocene-Eocene Thermal Maximum sea level
Deep-time sea-level changes associated with the Paleocene-Eocene Thermal Maximum (PETM) are of great interest to paleoceanographers and paleontologists, especially in shallow marine settings, like the Atlantic Coastal Plain PETM sections of the Eastern North American Continental Shelf. Accurate paleo-water depth reconstruction is essential to properly interpret and contextualize any PETM
Authors
Skye Y Tian, Moriaki Yasuhara, Marci M. Robinson, Huai-Hsuan M Huang
Planktic foraminiferal test size and weight response to the late Pliocene environment Planktic foraminiferal test size and weight response to the late Pliocene environment
Atmospheric carbon dioxide (pCO2atm) is impacting the ocean and marine organisms directly via changes in carbonate chemistry and indirectly via a range of changes in physical parameters most dominantly temperature. To assess potential impacts of climate change on carbonate production in the open ocean, we measured size and weight of planktic foraminifers during the late Pliocene at...
Authors
Chloe L. Todd, Daniela N. Schmidt, Marci M. Robinson, S. de Schepper
Mid-piacenzian of the north Atlantic Ocean Mid-piacenzian of the north Atlantic Ocean
The Piacenzian Age (Pliocene) represents a past climate interval within which frequency and magnitude of environmental changes during a period of past global warmth can be analyzed, climate models can be tested, and results can be placed in a context to better prepare for future change. Here we focus on the North Atlantic region, incorporating new and existing faunal assemblage and...
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley, Timothy D. Herbert, Bette L. Otto-Bliesner, Whittney Spivey
Science and Products
Filter Total Items: 54
Shelf ecosystems along the U.S. Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: Insights into the stratigraphic architecture Shelf ecosystems along the U.S. Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: Insights into the stratigraphic architecture
The Paleocene-Eocene Thermal Maximum (PETM) is the most pronounced global warming event of the early Paleogene related to atmospheric CO2 increases. It is characterized by negative δ18O and δ13C excursions recorded in sedimentary archives and a transient disruption of the marine biosphere. Sites from the U.S. Atlantic Coastal Plain show an additional small, but distinct δ13C excursion...
Authors
Monika Doubrawa, Peter Stassen, Marci M. Robinson, Tali Babila, James Zachos, Robert P. Speijer
Very high Middle Miocene surface productivity on the U.S. mid-Atlantic shelf amid glacioeustatic sea level variability Very high Middle Miocene surface productivity on the U.S. mid-Atlantic shelf amid glacioeustatic sea level variability
The Miocene Climatic Optimum (MCO) provides important insights into how the climate system operates under elevated temperatures and atmospheric CO2 levels. Few western North Atlantic paleotemperature or paleoecological records exist from the MCO, despite their importance for understanding both regional and global climate dynamics. Here we present quantitative MCO paleoecological data...
Authors
Marci M. Robinson, Harry J. Dowsett, Timothy D. Herbert
Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
The chronology of the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) remains disputed, hampering complete understanding of the possible trigger mechanisms of this event. Here we present an astrochronology for the PETM carbon isotope excursion from Howards Tract, Maryland a paleoshelf environment, on the mid-Atlantic Coastal Plain. Statistical evaluation of variations in calcium content...
Authors
Mingsong Li, Timothy J. Bralower, Lee R. Kump, Jean Self-Trail, James C. Zachos, William D. Rush, Marci M. Robinson
Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM) is recognized by a major negative carbon isotope (δ13C) excursion (CIE) signifying an injection of isotopically light carbon into exogenic reservoirs, the mass, source, and tempo of which continue to be debated. Evidence of a transient precursor carbon release(s) has been identified in a few localities, although it remains equivocal whether...
Authors
Tali L. Babila, Don E Penman, CD Standish, Monica Doubrawa, Tim J Bralower, Marci M. Robinson, Jean Self-Trail, Robert P. Speijer, Peter Stassen, Gavin L Foster, James C. Zachos
The Yorktown Formation: Improved stratigraphy, chronology and paleoclimate interpretations from the U.S. mid-Atlantic Coastal Plain The Yorktown Formation: Improved stratigraphy, chronology and paleoclimate interpretations from the U.S. mid-Atlantic Coastal Plain
The Yorktown Formation records paleoclimate conditions along the mid-Atlantic Coastal Plain during the mid-Piacenzian Warm Period (3.264 to 3.025 Ma), a climate interval of the Pliocene in some ways analogous to near future climate projections. To gain insight into potential near future changes, we investigated Yorktown Formation outcrops and cores in southeastern Virginia, refining the
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley, Timothy D. Herbert
Shallow marine ecosystem collapse and recovery during the Paleocene-Eocene Thermal Maximum Shallow marine ecosystem collapse and recovery during the Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM), the most well-studied transient hyperthermal event in Earth history, is characterized by prominent and dynamic changes in global marine ecosystems. Understanding such biotic responses provides valuable insights into future scenarios in the face of anthropogenic warming. However, evidence of the PETM biotic responses is largely biased towards...
Authors
Skye Y Tian, Moriaki Yasuhara, Huai-Hsuan M Huang, Fabien L. Condamine, Marci M. Robinson
Microfossils from Calvert Cliffs give us clues to the future warmer climate Microfossils from Calvert Cliffs give us clues to the future warmer climate
No abstract available.
Authors
Seth R Sutton, Marci M. Robinson, Stephen J. Culver, David J. Mallinson, Martin A Buzas, Harry J. Dowsett
Miocene neritic benthic foraminiferal community dynamics, Calvert Cliffs, Maryland, USA: Species pool, patterns and processes Miocene neritic benthic foraminiferal community dynamics, Calvert Cliffs, Maryland, USA: Species pool, patterns and processes
The presence/absence and abundance of benthic foraminifera in successive discrete beds (Shattuck “zones”) of the Miocene Calvert and Choptank formations, exposed at the Calvert Cliffs, Maryland, USA, allows for investigation of community dynamics over space and time. The stratigraphic distribution of benthic foraminifera is documented and interpreted in the context of sea-level change...
Authors
Stephen J. Culver, Seth R Sutton, David J. Mallinson, Martin A Buzas, Marci M. Robinson, Harry J. Dowsett
Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function
Stationarity of environmental preferences is a primary assumption required for any paleoenvironmental reconstruction using fossil materials based upon calibration to modern organisms. Confidence in this assumption decreases the further back in time one goes, and the validity of the assumption that species temperature tolerances have not changed over time has been challenged in Pliocene...
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley
Ostracod eye size: A taxonomy-free indicator of the Paleocene-Eocene Thermal Maximum sea level Ostracod eye size: A taxonomy-free indicator of the Paleocene-Eocene Thermal Maximum sea level
Deep-time sea-level changes associated with the Paleocene-Eocene Thermal Maximum (PETM) are of great interest to paleoceanographers and paleontologists, especially in shallow marine settings, like the Atlantic Coastal Plain PETM sections of the Eastern North American Continental Shelf. Accurate paleo-water depth reconstruction is essential to properly interpret and contextualize any PETM
Authors
Skye Y Tian, Moriaki Yasuhara, Marci M. Robinson, Huai-Hsuan M Huang
Planktic foraminiferal test size and weight response to the late Pliocene environment Planktic foraminiferal test size and weight response to the late Pliocene environment
Atmospheric carbon dioxide (pCO2atm) is impacting the ocean and marine organisms directly via changes in carbonate chemistry and indirectly via a range of changes in physical parameters most dominantly temperature. To assess potential impacts of climate change on carbonate production in the open ocean, we measured size and weight of planktic foraminifers during the late Pliocene at...
Authors
Chloe L. Todd, Daniela N. Schmidt, Marci M. Robinson, S. de Schepper
Mid-piacenzian of the north Atlantic Ocean Mid-piacenzian of the north Atlantic Ocean
The Piacenzian Age (Pliocene) represents a past climate interval within which frequency and magnitude of environmental changes during a period of past global warmth can be analyzed, climate models can be tested, and results can be placed in a context to better prepare for future change. Here we focus on the North Atlantic region, incorporating new and existing faunal assemblage and...
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley, Timothy D. Herbert, Bette L. Otto-Bliesner, Whittney Spivey