• Publications
  • Influence
Hotspots and Mantle Plumes' Some Phenomenology
The available data, mainly topography, geoid, and heat flow, describing hotspots worldwide are examined to constrain the mechanisms for swell uplift and to obtain fluxes and excess temperatures ofExpand
  • 1,003
  • 106
  • PDF
The habitat and nature of early life
Earth is over 4,500 million years old. Massive bombardment of the planet took place for the first 500–700 million years, and the largest impacts would have been capable of sterilizing the planet.Expand
  • 693
  • 72
  • PDF
Isostasy and Flexure of the Lithosphere
Preface Acknowledgments Notation 1. Historical development of the concept of isostasy 2. Isostasy and flexure of the lithosphere 3. Theory of elastic plates 4. Geological examples of the flexureExpand
  • 279
  • 67
Carbon dioxide cycling and implications for climate on ancient Earth
The crustal Urey cycle of CO2 involving silicate weathering and metamorphism acts as a dynamic climate buffer. In this cycle, warmer temperatures speed silicate weathering and carbonate formation,Expand
  • 403
  • 40
  • PDF
Annihilation of ecosystems by large asteroid impacts on the early Earth
Large asteroid impacts produced globally lethal conditions by evaporating large volumes of ocean water on the early Earth. The Earth may have been continuously habitable by ecosystems that did notExpand
  • 412
  • 39
  • PDF
Cenozoic magmatism throughout east Africa resulting from impact of a single plume
The geology of northern and central Africa is characterized by broad plateaux, narrower swells and volcanism occurring from ∼45 Myr ago to the present. The greatest magma volumes occur on theExpand
  • 653
  • 37
  • PDF
Emergence of a Habitable Planet
Abstract We address the first several hundred million years of Earth’s history. The Moon-forming impact left Earth enveloped in a hot silicate atmosphere that cooled and condensed over ∼1,000 yrs. AsExpand
  • 250
  • 27
  • PDF
No climate paradox under the faint early Sun
Environmental niches in which life first emerged and later evolved on the Earth have undergone dramatic changes in response to evolving tectonic/geochemical cycles and to biologic interventions, asExpand
  • 200
  • 25
  • PDF
Habitable zone limits for dry planets.
Most discussion of habitable planets has focused on Earth-like planets with globally abundant liquid water. For an "aqua planet" like Earth, the surface freezes if far from its sun, and the waterExpand
  • 174
  • 25
H2-rich fluids from serpentinization: geochemical and biotic implications.
Metamorphic hydration and oxidation of ultramafic rocks produces serpentinites, composed of serpentine group minerals and varying amounts of brucite, magnetite, and/or FeNi alloys. These mineralsExpand
  • 378
  • 23
  • PDF