| 41. | Smyth's research was in the subfields of petrology, chemical geology, and economic geology.
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| 42. | In 1911 he relocated to the University of Halle as an associate professor of mineralogy and petrology.
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| 43. | They can be measured in numerous different ways, including surface heat flow, petrology, and seismology.
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| 44. | He also studied ancient and modern reef geology, carbonate petrology and diagenesis, carbonate reservoirs and stratigraphy.
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| 45. | He also studied mineralogy, geology, petrology, metallurgy, assaying, mechanical engineering and electrical engineering.
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| 46. | Petrology of the Freetown Layered Complex, Sierra Leone : Part II . Magma Evolution and Crystallisation Conditions.
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| 47. | They are usually studied in the context of igneous petrology, although they are sometimes described using sedimentological terms.
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| 48. | Their occurrence and petrology, however, are identical globally and should not be erroneously referred to as kimberlite.
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| 49. | This work is a part of petrology and helps to reveal the origin and evolution of the parent rock.
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| 50. | He published a leading work on petrology and a large number of papers in various journals as shown below.
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