Production rates of extrusive and intrusive material are estimated on the basis of plate tectonic concept. For accreting and consuming plate boundaries, production rates of extrusive (volcanic) material are estimated at about 4 and 1 km
3/yr, while the rates of intrusive igneous material for the two boundaries are about +9.5 and -14 km
3/yr, respectively. Production rates of extrusive material for intra-oceanic and intra-continental plates are about 1 and 0.1 km
3/yr, respectively. In the marginal seas which are thought to be another type of plate accretion, production rates of extrusive and intrusive material are estimated at about 0.1 and 1.2 km
3/yr, respectively. Net addition to continental crust is about 0.9 km
3/yr which is nearly equal to the classic estimates before the proposal of plate tectonics. However, the value of net addition to oceanic crust (1.8 km
3/yr) contains large uncertainty because that the global production and consumption of intrusive material are one order of magnitude larger than the net production. Total heat flux from the earth’s surface (Q
t) is expressed by Q
t=Q
co+Q
cr+Q
cl+Q
m, where Q
co is average heat flux that possibly corresponds to radiogenic heat source, Q
cr and Q
cl are the “regional” and “local” excess conducted heat flux that may represent magmatic intrusion in the crust and circulation of hot water system, respectively. Q
m is heat flux due to mass transportation. Terrestrial heat flow values are reviewed in terms of major geological features. It is pointed out that the values higher than 1.0 HFU in oceanic areas may indicate Q
cr and at the ridge axis are considered to be Q
cl. On the other hand, conductive heat flux in geothermal areas and in the vicinity of volcanoes is excluded from the statistics. In geothermal areas, the global sum of heat flux Q
m is estimated at about 10
17 cal/yr and that of extrusive volcanic material is about 5×10
18 cal/yr, whereas the global conducted heat flux is about 2.3×10
20 cal/yr. It is emphasized, however, that Q
m by extrusive material is comparable to conducted heat flux near the plate boundary (say, along the zone of a few 100 km-wide).
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