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In his books The Earth's Shifting Crust (1958) (which includes a foreword by Albert Einstein) [15] [16] and Path of the Pole (1970), Hapgood speculated that accumulated polar ice mass destabilizes Earth's rotation, causing crustal displacement but not disturbing Earth's axial orientation. Hapgood argued that shifts (of no more than 40 degrees ...
Hapgood, Charles Hutchins; Earth's Shifting Crust: A Key to Some Basic Problems of Earth Science (1958, foreword by Albert Einstein) Hapgood, Charles Hutchins; Great Mysteries of the Earth (1960) Hapgood, Charles Hutchins; Piri Reis map of 1513 (1962)
Earth crustal displacement or Earth crust displacement may refer to: Plate tectonics , scientific theory which describes the large scale motions of Earth's crust ( lithosphere ). Fault (geology) , fracture in Earth's crust where one side moves with respect to the other side.
Continental crust is a tertiary crust, formed at subduction zones through recycling of subducted secondary (oceanic) crust. [17] The average age of Earth's current continental crust has been estimated to be about 2.0 billion years. [20] Most crustal rocks formed before 2.5 billion years ago are located in cratons.
Tectonophysics is concerned with movements in the Earth's crust and deformations over scales from meters to thousands of kilometers. [2] These govern processes on local and regional scales and at structural boundaries, such as the destruction of continental crust (e.g. gravitational instability) and oceanic crust (e.g. subduction), convection in the Earth's mantle (availability of melts), the ...
Surface map of oceanic crust showing the generation of younger (red) crust and eventual destruction of older (blue) crust. This demonstrates the crustal spatial evolution at the Earth's surface dictated by plate tectonics. Earth's crustal evolution involves the formation, destruction and renewal of the rocky outer shell at that planet's surface.
Earth’s inner core, a red-hot ball of iron 1,800 miles below our feet, stopped spinning recently, and it may now be reversing directions, according to an analysis of seismic activity.
Ocean – Body of salt water covering most of Earth; Plate tectonics – Movement of Earth's lithosphere List of tectonic plate interactions – Types of plate boundaries; Supercontinent – Landmass comprising more than one continental core, or craton; Terrane – Fragment of crust formed on one tectonic plate and accreted to another