Dennis Lewis Brown Marsh
My research interests lie in the general area of mountain building processes. Within this broad theme, I focus on studying processes of arc-continent collision, the structure and kinematics of foreland thrust and fold belts, and the crustal-scale structure and geodynamics of collisional orogens. Since the early 1990’s my research into arc-continent collision has mostly revolved around the Uralide Orogen of Russia, where perhaps one of the best preserved examples of a Paleozoic arc-continent collision zone outcrops in the southern Urals. More recently, I have expanded this research to include the active arc-continent collision that is taking place in Taiwan. This work has involved detailed, field-based structural geology and sedimentology observations that are integrated with reflection and refraction seismic experiments, geochemistry of arc volcanics, and the petrology of high-pressure rocks to develop process-oriented models for arc-continent collision. This multidiscplinary approach has meant working with scientists from many other areas of Earth Science. Since zones of arc-continent collision are producers of much of the world’s primary economic wealth, especially in the form of minerals, my research has also resulted in a close working relationship with scientists who are interested in integrating the process-oriented models for arc-continent collision with geodynamic models being constructed for the development of massive sulfide deposits. My research interests are also focused on the crustal-scale structure and geodynamic processes of collisional orogenic belts. This interest is particularly centered around the processes of thrust belt evolution, including fold - fault interactions, kinematics, mechanics, the effect of pre-existing basement structures on the structural style, and on the syndeformational sedimentary record. My work integrates fieldwork with reflection and refraction seismic profiling, as well as potential field data to build a 3D crustal model from which a kinematic model is iteratively developed. The integration of different geophysical techniques with field geology is especially important in this work, and I am actively collaborating with geophysicists on various projects from a crustal scale, to high resolution seismics, and petrophysical experiments.
Brown, D., J. Alvarez-Marron, M. Schimmel, Y. M. Wu, and G. Camanni (2012a), The structure and kinematics of the central Taiwan mountain belt derived from geological and seismicity data, Tectonics, 31(5), doi: 10.1029/2012TC003156.
Brown, D., X. Zhang, I. Palomeras, F. Simancas, R. Carbonell, C. Juhlin, and M. Salisbury (2012b), Petrophysical analysis of a mid-crustal reflector in the IBERSEIS profile, SW Spain, Tectonophysics, 550-553, 35-46, doi: 10.1016/j.tecto.2012.05.004.
Llana-Fúnez, S., and D. Brown (2012), Contribution of crystallographic preferred orientation to seismic anisotropy across a surface analog of the continental Moho at Cabo Ortegal, Spain, Bulletin of the Geological Society of America, 124(9-10), 1495-1513, doi: 10.1130/B30568.1.
Brown, D., R. J. Herrington, and J. Alvarez-Marron (2011a), Processes of arc-continent collision in the uralides, edited, pp. 311-340.
Brown, D., and P. D. Ryan (Eds.) (2011), Arc-continent collision, Frontiers in Earth Sciences, Springer, doi: 10.1007/978-3-540-88558-0.
Brown, D., P. D. Ryan, J. C. Afonso, D. Boutelier, J. P. Burg, T. Byrne, A. Calvert, F. Cook, S. Debari, J. F. Dewey, T. V. Gerya, R. Harris, R. Herrington, E. Konstantinovskaya, T. Reston, and A. Zagorevski (2011b), Arc-continent collision: The making of an orogen, in Arc-continent collision, edited by D. Brown and P. D. Ryan, pp. 477-493, Springer.
Camanni, G., D. Brown, J. Alvarez-Marron, M. Schimmel, and Y. M. Wu (2011), Deformation partitioning in Central Taiwan: New insights from surface geology, earthquake focal mechanisms, seismic energy release and GPS measurements along the shuilikeng transpressive fault system, Rendiconti Online Societa Geologica Italiana, 15, 17-19.
Herrington, R. J., and D. Brown (2011), The generation and preservation of mineral deposits in arc-continent collision environments, in Arc-continent collision, edited by D. Brown and P. D. Ryan, pp. 145-159, Springer.
Palomeras, I., R. Carbonell, P. Ayarza, D. Martí, D. Brown, and J. F. Simancas (2011), Shear wave modeling and Poisson's ratio in the Variscan Belt of SW Iberia, Geochemistry, Geophysics, Geosystems, 12(7), doi: 10.1029/2011GC003577.
Zhang, X., D. Brown, and Y. Deng (2011), Crustal composition model across the Bangong-Nujiang suture belt derived from INDEPTH III velocity data, Journal of Geophysics and Engineering, 8(4), 549-559, doi: 10.1088/1742-2132/8/4/007.
Brown, D. (2009), The growth and destruction of continental crust during arc-continent collision in the Southern Urals, Tectonophysics, 479(1-2), 185-196, doi: 10.1016/j.tecto.2009.01.011.
Brown, D., and C. Y. Huang (2009), An introduction to the Tectonophysics special issue on arc-continent collision processes, Tectonophysics, 479(1-2), 1-3, doi: 10.1016/j.tecto.2009.11.008.
Brown, D., S. Llana-Funez, R. Carbonell, J. Alvarez-Marron, D. Marti, and M. Salisbury (2009), Laboratory measurements of P-wave and S-wave velocities across a surface analog of the continental crust-mantle boundary: Cabo Ortegal, Spain, Earth and Planetary Science Letters, 285(1-2), 27-38, doi: 10.1016/j.epsl.2009.05.032.
Saura, E., J. Vergés, D. Brown, P. Lukito, S. Soriano, S. Torrescusa, R. García, J. R. Sánchez, C. Sosa, and R. Tenreyro (2009), Reply to comment by Andrzej Pszczółkowski on "structural and tectonic evolution of western Cuba fold and thrust belt" by Eduard Saura et al, Tectonics, 28(2), doi: 10.1029/2008TC002429.
Brown, D., C. Juhlin, C. Ayala, A. Tryggvason, F. Bea, J. Alvarez-Marron, R. Carbonell, D. Seward, U. Glasmacher, V. Puchkov, and A. Perez-Estaun (2008), Mountain building processes during continent-continent collision in the Uralides, Earth-Science Reviews, 89(3-4), 177-195.
Saura, E., J. Vergés, D. Brown, P. Lukito, S. Soriano, S. Torrescusa, R. García, J. R. Sánchez, C. Sosa, and R. Tenreyro (2008), Structural and tectonic evolution of western Cuba fold and thrust belt, Tectonics, 27(4).
Brown, D. (2007), Modal mineralogy and chemical composition of the Uralide lower crust determined from physical properties data, Tectonophysics, 433(1-4), 39-51.
Juhlin, C., D. Brown, A. Rybalka, and G. Petrov (2007), Moho imbrication in the Middle Urals, Terra Nova, 19(3), 189-194.
Alvarez-Marron, J., R. Rodriguez-Fernandez, N. Heredia, P. Busquets, F. Colombo, and D. Brown (2006), Neogene structures overprinting Palaeozoic thrust systems in the Andean Precordillera at 30°S latitude, Journal of the Geological Society, 163(6), 949-964.
Brown, D., and C. Juhlin (2006), A possible lower crustal flow channel in the middle urals based on reflection seismic data, Terra Nova, 18(1), 1-8.
Brown, D., C. Juhlin, A. Tryggvason, M. Friberg, A. Rybalka, V. Puchkov, and G. Petrov (2006a), Structural architecture of the southern and middle Urals foreland from reflection seismic profiles, Tectonics, 25(1).
Brown, D., V. Puchkov, J. Alvarez-Marron, F. Bea, and A. Perez-Estaun (2006b), Tectonic processes in the Southern and Middle Urals: An overview, in Geological Society Memoir, edited, pp. 407-419.
Brown, D., P. Spadea, V. Puchkov, J. Alvarez-Marron, R. Herrington, A. P. Willner, R. Hetzel, Y. Gorozhanina, and C. Juhlin (2006c), Arc-continent collision in the Southern Urals, Earth-Science Reviews, 79(3-4), 261-287.