T.N. Titus

Publications (3)31.2 Total impact

• Source

  Available from: M.R. Rosiek

  Article: Emplacement of the youngest flood lava on Mars: A short, turbulent story

  W L Jaeger, L P Keszthelyi, J A Skinner, M P Milazzo, A S Mcewen, T N Titus, M R Rosiek, D M Galuszka, E Howington-Kraus, R L Kirk
  [show abstract] [hide abstract]
  ABSTRACT: a b s t r a c t Recently acquired data from the High Resolution Imaging Science Experiment (HiRISE), Context (CTX) imager, and Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) onboard the Mars Recon-naissance Orbiter (MRO) spacecraft were used to investigate the emplacement of the youngest flood-lava flow on Mars. Careful mapping finds that the Athabasca Valles flood lava is the product of a single erup-tion, and it covers 250,000 km 2 of western Elysium Planitia with an estimated 5000–7500 km 3 of mafic or ultramafic lava. Calculations utilizing topographic data enhanced with MRO observations to refine the dimensions of the channel system show that this flood lava was emplaced turbulently over a period of only a few to several weeks. This is the first well-documented example of a turbulently emplaced flood lava anywhere in the Solar System. However, MRO data suggest that this same process may have operated in a number of martian channel systems. The magnitude and dynamics of these lava floods are similar to the aqueous floods that are generally believed to have eroded the channels, raising the intriguing possi-bility that mechanical erosion by lava could have played a role in their incision. Ó 2009 Published by Elsevier Inc.
  10/2009;
• Article: Response to Comment on "Athabasca Valles, Mars: A Lava-Draped Channel System"

  W. L. Jaeger, L. P. Keszthelyi, A. S. McEwen, T. N. Titus, C. M. Dundas, P. S. Russell
  [show abstract] [hide abstract]
  ABSTRACT: The recent geologic history of Athabasca Valles, Mars, is controversial. Some studies report ice-rich sediment in its channels, whereas others find only lava. Data from the High-Resolution Imaging Science Experiment camera now confirm that, although certain features exhibit a superficial similarity to ice-related landforms, solidified lava coats the entire channel system.
  Science 06/2008; 320(5883):1588-1588. · 31.20 Impact Factor
• Source

  Available from: M.R. Rosiek

  Article: Emplacement of the youngest flood lava on Mars: A short, turbulent story

  W.L. Jaeger, L.P. Keszthelyi, J.A. Skinner, M.P. Milazzo, A.S. McEwen, T.N. Titus, M.R. Rosiek, D.M. Galuszka, E. Howington-Kraus, R.L. Kirk
  [show abstract] [hide abstract]
  ABSTRACT: Recently acquired data from the High Resolution Imaging Science Experiment (HiRISE), Context (CTX) imager, and Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) onboard the Mars Reconnaissance Orbiter (MRO) spacecraft were used to investigate the emplacement of the youngest flood-lava flow on Mars. Careful mapping finds that the Athabasca Valles flood lava is the product of a single eruption, and it covers 250,000 km2 of western Elysium Planitia with an estimated 5000–7500 km3 of mafic or ultramafic lava. Calculations utilizing topographic data enhanced with MRO observations to refine the dimensions of the channel system show that this flood lava was emplaced turbulently over a period of only a few to several weeks. This is the first well-documented example of a turbulently emplaced flood lava anywhere in the Solar System. However, MRO data suggest that this same process may have operated in a number of martian channel systems. The magnitude and dynamics of these lava floods are similar to the aqueous floods that are generally believed to have eroded the channels, raising the intriguing possibility that mechanical erosion by lava could have played a role in their incision.
  Icarus.