Richard D. Norris
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View article: Identifying the Big Questions in paleontology: a community-driven project
Identifying the Big Questions in paleontology: a community-driven project Open
Paleontology provides insights into the history of the planet, from the origins of life billions of years ago to the biotic changes of the Recent. The scope of paleontological research is as vast as it is varied, and the field is constantl…
View article: Sensitivity of ocean circulation to warming during the Early Eocene greenhouse
Sensitivity of ocean circulation to warming during the Early Eocene greenhouse Open
Multiple abrupt warming events (“hyperthermals”) punctuated the Early Eocene and were associated with deep-sea temperature increases of 2 to 4 °C, seafloor carbonate dissolution, and negative carbon isotope (δ 13 C) excursions. Whether hyp…
View article: Foraminifera nitrogen isotopes and body size reveal an oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum (PETM)
Foraminifera nitrogen isotopes and body size reveal an oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum (PETM) Open
Ocean’s oxygen (O2) is essential to most marine life forms and represent a fundamental component of the biogeochemical cycling of nitrogen and carbon. Its inventory is declining in response to global warming. Contrasting predictions …
View article: Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum
Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum Open
The global ocean’s oxygen inventory is declining in response to global warming, but the future of the low-oxygen tropics is uncertain. We report new evidence for tropical oxygenation during the Paleocene-Eocene Thermal Maximum (PETM), a wa…
View article: All Aboard! Behind the Scenes of a Scientific Research Cruise
All Aboard! Behind the Scenes of a Scientific Research Cruise Open
From our climate to the air we breathe, the ocean influences the world around us. Scientists are always looking for new ways to explore and study the ocean. One way we do this is by going on specially designed ships that allow us to study …
View article: Orbital Forcing and Evolution of the Southern African Monsoon From Late Miocene to Early Pliocene
Orbital Forcing and Evolution of the Southern African Monsoon From Late Miocene to Early Pliocene Open
The late Miocene‐early Pliocene (7.4‐4.5 Ma) is a key interval in Earth's history where intense reorganization of atmospheric and ocean circulation occurred within a global cooling scenario. The Southern African monsoon (SAFM) potentially …
View article: Multi-phase ecological change on Indian subcontinent from the late Miocene to Pleistocene recorded in the Nicobar Fan
Multi-phase ecological change on Indian subcontinent from the late Miocene to Pleistocene recorded in the Nicobar Fan Open
Modern grasslands on the Indian subcontinent, North and South America, and East Africa expanded widely during the late Miocene – earliest Pleistocene, likely in response to increasing aridity. Grasses utilizing the C 4 photosynthetic pathw…
View article: North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth-Moon System.
North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth-Moon System. Open
Cyclostratigraphy and astrochronology are leading methods for determining geologic time. While this technique is dependent on the accuracy of astronomical calculations, the chaos of the solar system limits the confidence of these calculati…
View article: North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth‐Moon System
North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth‐Moon System Open
Cyclostratigraphy and astrochronology are now at the forefront of geologic timekeeping. While this technique heavily relies on the accuracy of astronomical calculations, solar system chaos limits how far back astronomical calculations can …
View article: Development of a Framework for the Sustainable Rivers Audit: A report to the Murray Darling Basin Commission
Development of a Framework for the Sustainable Rivers Audit: A report to the Murray Darling Basin Commission Open
"August 2001".Project Number: Development of a Framework for the Sustainable Rivers Audit - Project R2004.MDFRC item.Preamble The Sustainable Rivers Audit (Audit) is being established to overcome the lack of consistent and detailed informa…
View article: The Ocean as a Classroom: Considering the Roles of Equity, Diversity, and Justice in Oceanographic Knowledge Production to Promote Accessibility for Future Generations
The Ocean as a Classroom: Considering the Roles of Equity, Diversity, and Justice in Oceanographic Knowledge Production to Promote Accessibility for Future Generations Open
Understanding the history of how we studied our ocean in the past and how we study it now will help us develop approaches to make future oceanographic knowledge production more diverse, accessible, and inclusive. The motto of the UN Decade…
View article: Historical declines in parrotfish on Belizean coral reefs linked to shifts in reef exploitation following European colonization
Historical declines in parrotfish on Belizean coral reefs linked to shifts in reef exploitation following European colonization Open
Humans have utilized the Mesoamerican Reef (MAR) for millennia but the effects of prehistorical and historical fishing on this ecosystem remain understudied. To assess the long-term coupling of reef ecosystem and human dynamics in this reg…
View article: Holocene sea-level rise and coastal aquifer interactions: Triggering mechanisms for environmental change and impacts on human settlement patterns at Dor, Israel
Holocene sea-level rise and coastal aquifer interactions: Triggering mechanisms for environmental change and impacts on human settlement patterns at Dor, Israel Open
Future sea-level rise is expected to affect coastal aquifers and environments and have significant impacts on coastal communities. Here, we describe the impact of early to late Holocene sea-level variations on the coastal environment and h…
View article: North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth-Moon System
North Atlantic Drift Sediments Constrain Eocene Tidal Dissipation and the Evolution of the Earth-Moon System Open
Cyclostratigraphy and astrochronology are now at the forefront of geologic timekeeping. While this technique heavily relies on the accuracy of astronomical calculations, solar system chaos limits how far back astronomical calculations can …
View article: Persistent influence of precession on northern ice sheet variability since the early Pleistocene
Persistent influence of precession on northern ice sheet variability since the early Pleistocene Open
Prior to ~1 million years ago (Ma), variations in global ice volume were dominated by changes in obliquity; however, the role of precession remains unresolved. Using a record of North Atlantic ice rafting spanning the past 1.7 million year…
View article: Paleo-diatom composition from Santa Barbara Basin deep-sea sediments: a comparison of <i>18S-V9</i> and <i>diat-rbcL</i> metabarcoding vs shotgun metagenomics
Paleo-diatom composition from Santa Barbara Basin deep-sea sediments: a comparison of <i>18S-V9</i> and <i>diat-rbcL</i> metabarcoding vs shotgun metagenomics Open
Sedimentary ancient DNA (sedaDNA) analyses are increasingly used to reconstruct marine ecosystems. The majority of marine sedaDNA studies use a metabarcoding approach (extraction and analysis of specific DNA fragments of a defined length),…
View article: Quantitative visual analysis of marine barite microcrystals: Insights into precipitation and dissolution dynamics
Quantitative visual analysis of marine barite microcrystals: Insights into precipitation and dissolution dynamics Open
The accumulation rate of authigenic barite (BaSO 4 ) in marine sediments is a promising proxy for reconstructing marine export production, but many aspects of barite precipitation and dissolution in the water column remain unknown. Here, w…
View article: Changing environments and human interaction during the Pleistocene–Early Holocene from the shallow coastal area of Dor, Israel
Changing environments and human interaction during the Pleistocene–Early Holocene from the shallow coastal area of Dor, Israel Open
The protected Tel-Dor coastal embayment in the eastern Mediterranean preserves an unusually complete stratigraphic record that reveals human–environmental interactions throughout the Holocene. Interpretation of new seismic profiles collect…
View article: ODP Leg 207, Hole 1257A - Well Logging Data
ODP Leg 207, Hole 1257A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 207, Hole 1258C - Well Logging Data
ODP Leg 207, Hole 1258C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 207, Hole 1260B - Well Logging Data
ODP Leg 207, Hole 1260B - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 207, Hole 1260B - Well Logging Data
ODP Leg 207, Hole 1260B - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 207, Hole 1261B - Well Logging Data
ODP Leg 207, Hole 1261B - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 207, Hole 1258C - Well Logging Data
ODP Leg 207, Hole 1258C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …