Resume

• 1987

  University of Houston

  same as above

  University of Houston

• 1980

  University of Houston

  same as above

  University of Houston

  University of Houston

  Houston

  Texas

  I am currently a professor of geology in the Department of Earth and Atmospheric Sciences at the University of Houston. I served as Chairman from 1999-2013 and have since concentrated on research developing my ICP Lab with LA-ICP-MS

  QQQ-ICP-MS

  and ICP-OES and developing and using major

  trace

  and ultra trace element and isotopic analytical methods for analysis of igneous

  metamorphic and sedimentary rocks

  minerals

  glasses

  natural waters

  organic matter

  and crude oil. I conduct field work in Newfoundland in the Bay of Islands region

  at mid-ocean ridges

  in Texas at Big Bend National Park and in the Eagle Ford Shales

  as well other regions of the world including the China

  Turkey

  the Caribbean

  etc.

  Professor of Geology

  Houston Texas

  I am a Professor of Geology

  Director of the ICP-MS Lab and Co-Director of the Agillent Center of Excellence in Geochemistry at the University of Houston. I teach Field Methods

  Structural Geology

  Plate Tectonics

  and Igneous Petrogenesis and Plate Tectonics. I supervise graduate students conducting research on Mid-Ocean Ridges

  Ophiolite Belts

  Geochemistry

  Geochronology of Siliciclastic and Igneous Rocks

  Structural Geology and Plate Tectonics.

  Chairman of the Department of Earth and Atmospheric Sciences

  University of Houston

• 1975

  Ph.D.

  Geology

  American Geophysical Union\nGeological Society of America

• 1970

  Geology

• Stratigraphy

  Structural Geology and Tectonics

  Characterization

  Earth Science

  Science

  Geology

  Sedimentology

  Geophysics

  Sequence Stratigraphy

  Seismology

  Mineral Exploration

  Geochronology

  Reservoir Management

  Petrel

  Structural Geology

  Tectonics

  Geological Mapping

  Geochemistry

  Petroleum Geology

  Petrophysics

  Davidson

  M.

  Casey

  J.

  Lapen

  T.

  2013. Regional Variation in the Timing of Cessation of Laramide Folding

  Uplift

  and Post Flat-Slab Ignimbrite Flare Ups in West Texas (Abstract ID: 1817922).

  Tertiary volcanism in the Trans-Pecos region of West Texas is thought to be related to: 1) a major Farallon buoyant object-related slab flattening period resulting in early arc volcanic activity progressively shifting eastward to New Mexico and West Texas

  2) a subsequent slab-steepening/roll back or slab break away period resulting in renewed and extensive volcanism and ignimbrite flare ups across the region

  and 3) final minor volcanism related to Basin and Range extension. Evidence for these tectonic induced volcanic periods can be observed in volcanic compositional variation and the timing and style of volcanism and deformation. This includes highly varied pre-folding mafic alkaline and calc-alkaline volcanic and intrusive rocks from ~46Ma (Eocene) to ~32Ma (Oligocene). This is followed by broadly distributed

  post-folding calc-alkaline volcanism with subsidiary alkaline mafic volcanism during subsequent regionally varying slab steepening or break away periods (38Ma to 28Ma). Later

  smaller-scale

  almost exclusively mafic volcanism is associated with Basin and Range extension that occurred between 25 to 2Ma (Barker

  1987). \nThis study attempts to refine regional differences in the cessation of Laramide folding and episodic slab-asthenosphere influenced volcanism in West Texas by utilizing LA-ICP-MS U/Pb zircon geochronology. Ages have been measured for volcanic rock samples that occur both above and below the angular unconformity. In addition

  ages for detrital zircons have been obtained in silicilastics below the unconformity. Based on our preliminary results

  we suggest cessation of shortening associated with Laramide-style deformation and uplift in the northern Trans-Pecos region ceased by ~38 Ma (Eocene) and persisted in the south e.g.

  in the Big Bend region until ~31 Ma (Oligocene). These differences may be explained by fundamental changes in the North American plate basal lithospheric structure from north to south in the region.

  John F.

  University of Houston