Mark B. Longacre

BS ’78 Geology, University of Wisconsin – Milwaukee
MS ’82 Geophysics, Purdue University
(Nominated by: Earth, Atmospheric, and Planetary Sciences)

"My thesis advisor was Dr. William Hinze, one of the most highly recognized and admired scholars in the world of gravity and magnetics. His knowledge, guidance and passion were, and still are, an inspiration to me. I am proud and honored to call him a mentor and a friend."

Mark Longacre has been a professional geophysicist for the past 35 years, working exclusively as a gravity and magnetic specialist for the oil and gas exploration industry. He started his career in San Francisco with Sohio Petroleum in 1981 as a potential field geophysicist in the special projects group.

After transfers to Dallas, where Longacre earned an MBA degree in Technical Management from the University of Dallas, and then Denver in 1985, he joined Aqua Terra International, a gravity and magnetic consulting company, as manager of U.S. operations.

In 1991, Longacre started MBL, Inc., a gravity and magnetics consulting company in Denver. MBL specializes in the acquisition, processing, and integrated interpretation of gravity and magnetic data for the oil and gas exploration industry. In 1999, he opened a second office in London.

Over the past 26 years with MBL, Longacre has traveled to more than 60 countries doing a variety of specialized gravity and magnetic projects for the oil and gas exploration industry.


  • 2013 - Began teaching for the Purdue Department of Earth, Atmospheric, and Planetary Sciences
  • 2011 - Became member of the Department of Earth, Atmospheric, and Planetary Sciences Advisory Board
  • 2002-2007 - Worked on Tectonic Interpretation and Reconstruction of the Arctic project with British Petroleum
  • 1991 - Started MBL, Inc
  • 1985-1991 - Manager of U.S. operations, Aqua Terra International

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