Question: What city is the school, from which Kenneth S. Deffeyes earned a B.S. in petroleum geology, located in?
Context: Petroleum engineering is a field of engineering concerned with the activities related to the production of hydrocarbons, which can be either crude oil or natural gas.  Exploration and Production are deemed to fall within the "upstream" sector of the oil and gas industry.  Exploration, by earth scientists, and petroleum engineering are the oil and gas industry's two main subsurface disciplines, which focus on maximizing economic recovery of hydrocarbons from subsurface reservoirs.  Petroleum geology and geophysics focus on provision of a static description of the hydrocarbon reservoir rock, while petroleum engineering focuses on estimation of the recoverable volume of this resource using a detailed understanding of the physical behavior of oil, water and gas within porous rock at very high pressure. In petroleum geology, source rock refers to rocks from which hydrocarbons have been generated or are capable of being generated.  They form one of the necessary elements of a working petroleum system.  They are organic-rich sediments that may have been deposited in a variety of environments including deep water marine, lacustrine and deltaic.  Oil shale can be regarded as an organic-rich but immature source rock from which little or no oil has been generated and expelled.  Subsurface source rock mapping methodologies make it possible to identify likely zones of petroleum occurrence in sedimentary basins as well as shale gas plays. Marine and Petroleum Geology is a peer-reviewed scientific journal covering marine and petroleum geology.  It was established in 1984 and is published by Elsevier.  The editor-in-chief is Massimo Zecchin (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale). Kenneth S. Deffeyes is a geologist who worked with M. King Hubbert, the creator of the Hubbert peak theory, at the Shell Oil Company research laboratory in Houston, Texas.  Deffeyes holds a B.S. in petroleum geology from the Colorado School of Mines and a Ph.D. in geology from Princeton University, studying under F.B. van Houten.  In 1967 he began teaching at Princeton, where he is now professor emeritus.  He claims Chickasaw ancestry. Colorado School of Mines, also referred to as "Mines", is a public teaching and research university in Golden, Colorado, devoted to engineering and applied science, with special expertise in the development and stewardship of the Earth's natural resources.  Mines placed 82nd in the 2017 "U.S. News & World Report" "Best National Universities" ranking.  In the 2016–17 QS World University Rankings by subject, the university was ranked as the top institution in the world for mineral and mining engineering. A petroleum geologist is an earth scientist who works in the field of petroleum geology, which involves all aspects of oil discovery and production.  Petroleum geologists are usually linked to the actual discovery of oil and the identification of possible oil deposits or leads.  It can be a very labor-intensive task involving several different fields of science and elaborate equipment.  Petroleum geologists look at the structural and sedimentary aspects of the stratum/strata to identify possible oil traps. Grant Mossop (1948 - 7 October 2005) was a geologist from Canada.  He earned a B.Sc.  in 1970 and an M.Sc.  in 1971 from the University of Calgary followed by a Ph.D. in geology from the University of London.  He served as the Director of the Institute of Sedimentary and Petroleum Geology, Geological Survey of Canada Calgary.  A graduate scholarship in his name was established in 2009. Marion King Hubbert (October 5, 1903 – October 11, 1989) was an American geologist and geophysicist.  He worked at the Shell research lab in Houston, Texas.  He made several important contributions to geology, geophysics, and petroleum geology, most notably the Hubbert curve and Hubbert peak theory (a basic component of peak oil), with important political ramifications.  He was often referred to as "M. King Hubbert" or "King Hubbert". Wang Tieguan ()is a Chinese noted geologist,Academician of the Chinese Academy of Sciences,Professor of China University of Petroleum,PhD Tutor born in December,1937,born in Shanghai City,People's Republic of China in December,1937, graduated from Beijing Petroleum Geology School(predecessor of Yangtze University)in 1956 and from Beijing Petroleum Institute in 1965. An isopach map illustrates thickness variations within a tabular unit, layer or stratum.  Isopachs are contour lines of equal thickness over an area.  Isopach maps are utilized in hydrographic survey, stratigraphy, sedimentology, structural geology, petroleum geology and volcanology.
Answer: Golden, Colorado