Richard G. Gordon (born 1953) is an American geophysicist, known for his research on global tectonics, including global plate motions and palaeomagnetism. He is noteworthy for leading two global plate motion projects: NUVEL (Northwestern University Velocity) and MORVEL (Mid-Ocean Ridge Velocity). [1] [2] [3] [4] [5] In the geosciences, NUVEL and MORVEL are standard models for global plate motions. [1]
Richard G. Gordon was born in California and grew up in east San Jose in the Diablo Range foothills. [6] He graduated in 1975 from the University of California, Santa Cruz with a B.A. in geophysics. At Stanford University he graduated in geophysics with an M.S. in 1977 with a Ph.D. in 1979. [7] His Ph.D. thesis was supervised by Allan V. Cox. For the academic year 1978–1979 Seth Stein was a postdoc at Stanford University. Stein and Gordon began a collaboration on global plate motions — their collaboration lasted over a number of years. In 1979 Stein joined the faculty of geological sciences of Northwestern University. After a postdoctoral year of teaching and research at Stanford, Gordon also joined Northwestern University faculty of geological sciences. He spent 15 years on Northwestern's faculty. [6] Two of Gordon's former doctoral students Charles "Chuck" DeMets (Ph.D. 1988) [8] and Donald Argus (Ph.D. 1990) [9] at Northwestern University were eventually elected Fellows of the American Geophysical Union (AGU) [1] (DeMets in 2011 [8] and Argus in 2018 [9] ). Gordon, Stein, DeMets, and Argus collaborated extensively. [10] [11] [12] In 1995 Gordon joined the faculty of Rice University, [6] where he is currently W. M. Keck Foundation Professor in Geophysics, Earth, Environmental and Planetary Sciences. [13] In 2020 he gave a lecture at Beijing's China University of Geosciences (CUG). [14]
Gordon's research on global tectonics, tectonophysics, and paleomagnetism has earned him an international reputation. [1] In 1984 Gordon coauthored, with Allan V. Cox and Scott O'Hare, an important paper on palaeomagnetic Euler poles. [15] [1] Gordon's research in tectonophysics has made use of marine geophysics, space geodesy, geodynamics, and numerical modeling. [6] [13] The research of Gordon and his colleagues have quantified relative motions within major tectonic plates and thereby identified at least three major problems with the original theory of plate tectonics. First, the global plate interiors are less rigid than originally hypothesized. Second, the earliest models of plate tectonics need the incorporation of diffuse boundaries among oceanic plates. Third, global plate reconstructions sometimes need the incorporation of effects of horizontal thermal contractions found in geologically young oceanic lithosphere — such thermal contractions are relevant to understanding relative motions among hot spots. [1]
Gordon was awarded an Alfred P. Sloan Foundation Research Fellowship for the academic year 1984–1985. [13] In 1989 he was elected a Fellow of the American Geophysical Union (AGU) [16] and also received the AGU's James B. Macelwane Medal. In 1998 he gave the AGU's Birch Lecture. In 2002 he received the Arthur L. Day Medal from the Geological Society of America (GSA). [13] Upon the occasion of Dan McKenzie's winning of the 2002 Crafoord Prize in Geosciences, Gordon was honored as one of six Earth science Lecturers in the 20002 Crafoord Prize Symposium. [17] In 2019 Gordon was elected a Fellow of the American Association for the Advancement of Science. [18] [19] In 2023 he was awarded the Stephan Mueller Medal of the European Geosciences Union (EGU). [1]
Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. Geophysicists, who usually study geophysics, physics, or one of the Earth sciences at the graduate level, complete investigations across a wide range of scientific disciplines. The term geophysics classically refers to solid earth applications: Earth's shape; its gravitational, magnetic fields, and electromagnetic fields ; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations and pure scientists use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial physics; and analogous problems associated with the Moon and other planets.
Allan Verne Cox was an American geophysicist. His work on dating geomagnetic reversals, with Richard Doell and Brent Dalrymple, made a major contribution to the theory of plate tectonics. Allan Cox won numerous awards, including the prestigious Vetlesen Prize, and was the president of the American Geophysical Union. He was the author of over a hundred scientific papers, and the author or editor of two books on plate tectonics. On January 27, 1987, Cox died in an apparent suicide.
The Journal of Geophysical Research is a peer-reviewed scientific journal. It is the flagship journal of the American Geophysical Union. It contains original research on the physical, chemical, and biological processes that contribute to the understanding of the Earth, Sun, and Solar System. It has seven sections: A, B, C (Oceans), D (Atmospheres), E (Planets), F, and G (Biogeosciences). All current and back issues are available online for subscribers.
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The Nankai Trough is a submarine trough located south of the Nankaidō region of Japan's island of Honshu, extending approximately 900 km (559 mi) offshore. The underlying fault, the Nankai megathrust, is the source of the devastating Nankai megathrust earthquakes, while the trough itself is potentially a major source of hydrocarbon fuel, in the form of methane clathrate.
The Balmoral Reef plate is a small tectonic plate (microplate) located in the south Pacific north of Fiji. Clockwise from the north, it borders the Pacific plate, the Australian plate, Conway Reef plate, and the New Hebrides plate. The northern and western borders are a divergent boundary while the rest of the borders are transform and convergent boundaries. The Balmoral Reef plate's ocean crust is less than 12 million years old and is spreading between the New Hebrides and Tonga subduction. The plate forms the west central part of the seafloor of the North Fiji Basin.
The Conway Reef plate is a small tectonic plate (microplate) located in the south Pacific west of Fiji. The western boundary is with the New Hebrides plate while the eastern is with the Australian plate. A short transform boundary also exists with the Balmoral Reef plate. Much of the plate underlies the south central portion of the North Fiji Basin.
Slab pull is a geophysical mechanism whereby the cooling and subsequent densifying of a subducting tectonic plate produces a downward force along the rest of the plate. In 1975 Forsyth and Uyeda used the inverse theory method to show that, of the many forces likely to be driving plate motion, slab pull was the strongest. Plate motion is partly driven by the weight of cold, dense plates sinking into the mantle at oceanic trenches. This force and slab suction account for almost all of the force driving plate tectonics. The ridge push at rifts contributes only 5 to 10%.
Plate reconstruction is the process of reconstructing the positions of tectonic plates relative to each other or to other reference frames, such as the Earth's magnetic field or groups of hotspots, in the geological past. This helps determine the shape and make-up of ancient supercontinents and provides a basis for paleogeographic reconstructions.
Carmen Gaina is the Director of the Centre for Earth Evolution and Dynamics (CEED) a Norwegian Centre of Excellence hosted at the Department of Geosciences, University of Oslo, Norway.
In geology, the slab is a significant constituent of subduction zones.
The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses. The continental drift/ Airy-Heiskanen isostasy hypothesis had many flaws and scarce data. The fixist/ Pratt-Hayford isostasy, the contracting Earth and the expanding Earth concepts had many flaws as well.
The Lwandle plate is one of three tectonic microplates, along with the Rovuma plate and Victoria plate, that make up the African plate with the Somali plate and the Nubian plate. Its discovery is very recent, so the velocity of the plate is neither well known nor well understood. Many experiments are ongoing to quantify this. The Lwandle plate lies between 30°E and 50°E, sharing a boundary with the Nubian, Somali, and Antarctic plates.
Kevin C. A. Burke was a geologist known for his contributions in the theory of plate tectonics. In the course of his life, Burke held multiple professorships, most recent of which (1983-2018) was the position of professor of geology and tectonics at the Department of Earth and Atmospheric Science, University of Houston. His studies on plate tectonics, deep mantle processes, sedimentology, erosion, soil formation and other topics extended over several decades and influenced multiple generations of geologists and geophysicists around the world.
Suzanne Carbotte is a marine geophysicist known for her research on the formation of new oceanic crust.
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