We hypothesize that the rapid onset of the carbon isotope excursion (CIE) at the Paleocene/Eocene boundary (V55 Ma) may have resulted from the accretion of a significant amount of 12C-enriched carbon from the impact of a V10 km comet, an event that would also trigger greenhouse warming leading to the Paleocene/Eocene thermal maximum and, possibly, thermal dissociation of seafloor methane hydrate. Indirect evidence of an impact is the unusual abundance of magnetic nanoparticles in kaolinite-rich shelf sediments that closely coincide with the onset and nadir of the CIE at three drill sites on the Atlantic Coastal Plain. After considering various alternative mechanisms that could have produced the magnetic nanoparticle assemblage and by analog...
Geochemical anomalies at the Cretaceous-Tertiary boundary include (1) decrease in CaCO sub(3)-conten...
Two long-lived peaks in extraterrestrial ^3He flux have been identified in the sedimentary record of...
Thesis: Ph. D., Joint Program in Chemical Oceanography (Massachusetts Institute of Technology, Depar...
We hypothesize that the rapid onset of the carbon isotope excursion (CIE) at the Paleocene/Eocene bo...
The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a threshold event ...
The Paleocene–Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon-isotope excursi...
The onset of the Paleocene/Eocene thermal maximum (PETM) and associated carbon isotope excursion (CI...
Abstract The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a thresho...
The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a threshold event ...
We investigate whether an extraterrestrial impact could produce changes in atmospheric chemistry suf...
The Paleocene–Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon-isotope excursi...
The onset of the Paleocene–Eocene thermal maximum (PETM) and associated carbon isotope excursion (CI...
previously been proposed either cannot explain all of these features or would require some sort of h...
Contrary to Dickens and Francis’s claim that we ‘challenge the idea of a massive CH4 re- lease durin...
At the boundary between the Palaeocene and Eocene epochs, about 55 million years ago, the Earth expe...
Geochemical anomalies at the Cretaceous-Tertiary boundary include (1) decrease in CaCO sub(3)-conten...
Two long-lived peaks in extraterrestrial ^3He flux have been identified in the sedimentary record of...
Thesis: Ph. D., Joint Program in Chemical Oceanography (Massachusetts Institute of Technology, Depar...
We hypothesize that the rapid onset of the carbon isotope excursion (CIE) at the Paleocene/Eocene bo...
The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a threshold event ...
The Paleocene–Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon-isotope excursi...
The onset of the Paleocene/Eocene thermal maximum (PETM) and associated carbon isotope excursion (CI...
Abstract The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a thresho...
The standard paradigm that the Paleocene/Eocene thermal maximum (PETM) represents a threshold event ...
We investigate whether an extraterrestrial impact could produce changes in atmospheric chemistry suf...
The Paleocene–Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon-isotope excursi...
The onset of the Paleocene–Eocene thermal maximum (PETM) and associated carbon isotope excursion (CI...
previously been proposed either cannot explain all of these features or would require some sort of h...
Contrary to Dickens and Francis’s claim that we ‘challenge the idea of a massive CH4 re- lease durin...
At the boundary between the Palaeocene and Eocene epochs, about 55 million years ago, the Earth expe...
Geochemical anomalies at the Cretaceous-Tertiary boundary include (1) decrease in CaCO sub(3)-conten...
Two long-lived peaks in extraterrestrial ^3He flux have been identified in the sedimentary record of...
Thesis: Ph. D., Joint Program in Chemical Oceanography (Massachusetts Institute of Technology, Depar...