Results 311 to 320 of about 75,336 (360)
Some of the next articles are maybe not open access.
Related searches:
Related searches:
2014
Study of igneous petrology is a basic necessity to geological sciences. Igneous rocks—intrusive (plutonic) and extrusive (volcanic)—are natural products of crystallization, cooling and solidification of magma originated from the deepest parts of the Earth and represent the original source for sedimentary and metamorphic counter components.
S.K. Haldar, Josip Tišljar
openaire +2 more sources
Study of igneous petrology is a basic necessity to geological sciences. Igneous rocks—intrusive (plutonic) and extrusive (volcanic)—are natural products of crystallization, cooling and solidification of magma originated from the deepest parts of the Earth and represent the original source for sedimentary and metamorphic counter components.
S.K. Haldar, Josip Tišljar
openaire +2 more sources
2003
Publisher Summary The classification of igneous rock bodies in terms of their form and structural relationship to adjacent rocks is discussed in this chapter. These aspects are the most relevant to the appearance of igneous rocks on geological maps. Igneous rocks are formed by the solidification of molten rock or magma.
openaire +2 more sources
Publisher Summary The classification of igneous rock bodies in terms of their form and structural relationship to adjacent rocks is discussed in this chapter. These aspects are the most relevant to the appearance of igneous rocks on geological maps. Igneous rocks are formed by the solidification of molten rock or magma.
openaire +2 more sources
Geological Society of America Bulletin, 1953
The old value of 0.048 per cent chlorine for the average in the earth9s crust is considered too high, and an average of 0.02 per cent appears more probable. The average chlorine content of approximately 100 granitic rocks from North America and other parts of the world was found to be 0.022 per cent; of 20 gabbros, 0.021 per cent; and of 40 basalts and
E. B Sandell, P. K Kuroda
openaire +2 more sources
The old value of 0.048 per cent chlorine for the average in the earth9s crust is considered too high, and an average of 0.02 per cent appears more probable. The average chlorine content of approximately 100 granitic rocks from North America and other parts of the world was found to be 0.022 per cent; of 20 gabbros, 0.021 per cent; and of 40 basalts and
E. B Sandell, P. K Kuroda
openaire +2 more sources
1994
Feldspars are the most abundant minerals in almost all crustal igneous rocks, those without feldspars being rarities. Feldspars define better than any other mineral group the three stages in the evolution of igneous rocks, the magmatic growth, the subsolidus transformation and the deuteric alteration stages.
William L. Brown, Ian Parsons
openaire +2 more sources
Feldspars are the most abundant minerals in almost all crustal igneous rocks, those without feldspars being rarities. Feldspars define better than any other mineral group the three stages in the evolution of igneous rocks, the magmatic growth, the subsolidus transformation and the deuteric alteration stages.
William L. Brown, Ian Parsons
openaire +2 more sources
1973
Every mineral is stable within a certain range of temperature, bulk pressure, chemical composition and water pressure of the magma from which it crystallizes.
openaire +2 more sources
Every mineral is stable within a certain range of temperature, bulk pressure, chemical composition and water pressure of the magma from which it crystallizes.
openaire +2 more sources
1985
Igneous rocks are not of major significance in petroleum geology, but when they do occur it is essential that the logging geologist is able to produce a valid description and, if possible, a name. Drill cuttings are not the ideal medium to work with when describing igneous rocks, but certain simple observations such as crystal size and form, proportion
openaire +2 more sources
Igneous rocks are not of major significance in petroleum geology, but when they do occur it is essential that the logging geologist is able to produce a valid description and, if possible, a name. Drill cuttings are not the ideal medium to work with when describing igneous rocks, but certain simple observations such as crystal size and form, proportion
openaire +2 more sources