Heat flow evolution of the Earth from paleomantle temperatures: Evidence for increasing heat loss since ∼2.5 Ga

2017 ◽  
Vol 269 ◽  
pp. 165-171 ◽  
Author(s):  
Javier Ruiz
Keyword(s):  

Recent work has determined the depth of the Mohorovičić discontinuity at sea and has made it likely that peridotite xenoliths in basaltic volcanic rocks are samples of material from below the discontinuity. It is now possible to produce a hypothetical section showing the transition from a continent to an ocean. This section is consistent with both the seismic and gravity results. The possible reactions of the crust to changes in the total volume of sea water are dis­cussed. It seems possible that the oceans were shallower and the crust thinner in the Archean than they are now. If this were so, some features of the oldest rocks of Canada and Southern Rhodesia could be explained. Three processes are described that might lead to the formation of oceanic ridges; one of these involves tension, one compression and the other quiet tectonic conditions. It is likely that not all ridges are formed in the same way. It is possible that serpentization of olivine by water rising from the interior of the earth plays an important part in producing changes of level in the ocean floor and anomalies in heat flow. Finally, a method of reducing gravity observations at sea is discussed.


Metaphysics ◽  
2020 ◽  
pp. 67-71
Author(s):  
O. B Khavroshkin ◽  
V. V Tsyplakov

The detected anomalous neutrino radioisotope (ANRI) absorption or effect allows one to study the variety of interactions of neutrino fluxes with radioactive matter and its consequences. Thus, results were obtained on solar neutrinos v , seismicity and heat flow of the Earth. The study of the features of the mechanical manifestation of the neutrino flux as a mechanical effect of the solar flux v in space on the Pioneer-type spacecraft is promising for many reasons.


2018 ◽  
Vol 1 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Vladimir Cermak ◽  
Alan Beck ◽  
Valiya Hamza

The study of the earth's internal heat plays an important role in understanding the Earth's origin, internal constitution, and plate tectonics. The outflow of heat from the Earth's interior is, energy-wise, the most impressive terrestrial phenomenon. The present rate of heat loss is estimated to be about 1021 joules per year, which is orders of magnitude greater than the energy dissipation of earthquakes or heat loss from volcanic eruptions. Knowledge of terrestrial heat flow is essential in investigating the internal thermal field of the Earth. Initially focus has been on measurements of underground temperatures and thermal properties of geologic materials, assessment of sources and sinks of heat, institution of global data base, development of thermal models of crust and qualification of geothermal energy resources. During later stages, other implications of heat flow studies has also been recognized in fields such as paleoclimatology, global warming, exploration geophysics and hydrogeology. The International Heat Flow Commission – IHFC plays a guiding role in development of such investigations.


2013 ◽  
pp. 144-158 ◽  
Author(s):  
Carol A. Stein
Keyword(s):  

Georesursy ◽  
2018 ◽  
Vol 20 (4) ◽  
pp. 366-376 ◽  
Author(s):  
B. Polyak ◽  
M. Khutorskoy

The energy aspects of the problem of intraterrestrial heat transfer in various forms are discussed. Endogenous causes of conductive heat flow dispersion − radiogenic heat generation, tectonic movements and magmatism (volcanism), including its latent and open discharge in the form of volcanic and hydrothermal activity are considered. The geological ordering of the heat flow in the continental crust is related to convective discharge of the heat and mass flux from the mantle, marked by the isotopic composition of helium in freely circulating underground fluids. The combined transport of heat and helium, as well as the correlation of He isotopic compositions in volcanic and hydrothermal gases and Sr compositions in young lavas, testify to the silicate nature of the heat and mass flow emanating from the mantle reservoirs of different depths.


1966 ◽  
Vol 14 (3) ◽  
pp. 105-110 ◽  
Author(s):  
Gene Simmons
Keyword(s):  

2007 ◽  
Vol 26 (2) ◽  
pp. 301-319
Author(s):  
Vladimír Cermák

The outflow of heat from the Earth's interior is, energy-wise, the most impressive terrestrial phenomenon. Its rate of about 1021 joules per year is order of magnitudes greater than the heat loss from volcanic eruptions or energy dissipation of earthquakes. The study of the Earth's internal heat plays an important role in understanding the Earth's origin, its evolution, internal constitution, and plate tectonics. The paper briefly recalls the early days of geothermal understanding of our planet, lists the principal milestones of heat flow studies and reviews the major achievements of the international cooperation under the activities of the International Heat Flow Commission of the IASPEI.


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