Orogenic ocean belts laboratory
Grant Agreement No.: 14.Y26.31.0018
Project name: A multidisciplinary study of Pacific-type orogenic belts and development of a holistic model linking evolution of oceans, their active margins and mantle magmatism
Name of the institution of higher learning: Novosibirsk State University
Fields of scientific research: Earth sciences and related environmental sciences
To launch a new modern research and educational laboratory and to perform a multi-disciplinary study of Pacific-type foldbelts (orogens) for developing a new holistic model linking evolution of paleo-oceans, formation and transformation of continental crust at their active margins, generation of hydrous-carbonated plumes in the mantle transition zone (MTZ) and intra-plate magmatism and evaluating prospects for the recognition of new types of mineral deposits.
1. To develop a new approach for the reconstruction of paleo-oceanic complexes of Central and East Asia based on the model of Ocean Plate Stratigraphy (OPS), which was created by many detailed studies of western Pacific (Japan) accretionary complexes. To propose a method for recognizing different oceanic plates within one paleo-ocean and evaluating their sizes and ages.
2. To estimate major parameters of the Pacific-type convergent margins of Asia from the late Neoproterozoic to the Cenozoic: (i) type of margin: accreting or eroding; (ii) type of supra-subduction complex: intra-oceanic or continental margin; (iii) length and amount of island arcs; (iv) periods of continuous subduction; (v) type of accreted OPS: pelagic, hemipelagic, trench, oceanic island/seamount/plateau.
3. For eroding margins: based on the estimated parameters of the convergent margins (see Objective 2) to define major periods of tectonic erosion of oceanic and continental materials and their subduction to the deep mantle; to evaluate the volumes of materials eroded during the whole life period of eroding margin; to distinguish the major types of materials, which can be subduction to the deep mantle: volatiles (water, carbon dioxide), oceanic crust serpentinite and basalt, continental crust; to substantiate the possibility of the accumulation of those materials in the MTZ.
4. To study the links between the periods on mantle metasomatism and (i) the periods of eroding convergent margins and (ii) the periods of continuous subduction. To correlate the periods of eroding convergent margins, the periods of mantle metasomatism and the periods of intra-plate magmatism and rifting in Central and East Asia from the late Paleozoic to the Cenozoic. To substantiate the possibility of the generation of hydrous-carbonated plumes in the MTZ as a result of synergetic interaction of subduction and continental and oceanic crust materials accumulated therein.
5. To develop a holistic model linking the evolution of paleo-oceans, the erosion and subduction of oceanic and continental crust materials at Pacific-type convergent margins, their accumulations in the MTZ, mantle metasomatism and intra-plate magmatism.
6. For accreting margins: to distinguish the major periods of accretion of evaluate the volumes of displaced OPS units, in particular, deep sea muds; to discriminate the settings of deep-sea sedimentation more favorable for the accumulation of rare-earth elements and yttrium; to estimate the potential of deep-sea sediments for those chemical elements and the prospects for the recognition of new types of mineral resources.
Date of Birth: 24.12.1949
Academic degree and title: PhD
Job Title: Earth-Life Science Institute, Tokyo Institute of Technology
Field of scientific interests: geology, plate tectonics, accretionary orogeny, ocean plate stratigraphy, mantle plumes, metamorphic petrology, geodynamics, Deep Earth interior, origin of Earth and Life
Professor Shigenori Maruyama is a world known and best cited expert in geology ad tectonics of Japan and other Pacific-type accretionary orogens, subduction zone petrology and dynamics, global and regional tectonics of Eurasia, and Earth system evolution. He is the author of the Model of Mantle Superplumes generated at the core-mantle boundary and the author of a new concept of Plume Tectonics, which joined seismic tomography, mantle petrology and world geology. Prof. Maruyama has supervised dozens of master’s and PhD, led many large research projects, awardee of many national and international prizes. The most important awards are “Medal with Purple Ribbon” from the Government of Japan (2006), Thomas Reuters award for high citation (2012) and Honorary Fellow of the Geological Society of America title (2014). In addition to geology and petrology, as a socially responsible scientist, he participates in the studies of climate changes, natural hazards, and origin of life on the Earth and reads public lectures.