Which Is Older Granite Or Basalt

It is common both on earth and other planetary bodies.

Which is older granite or basalt.

As it turns out most of the ocean floor is basalt and most of the continents are granite. Polishing granite or basalt too old to reply b bolding 2006 01 09 05 24 14 utc. Granite is an igneous plutonic rock which is. ˈ b æ s ɔː l t ˈ b æ s əl t is a mafic extrusive igneous rock formed from the rapid cooling of lava rich in magnesium and iron exposed at or very near the surface of a terrestrial planet or a moon.

Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of continental crust. Other pieces though get a glass like surface but a cloudy finish without the deep clear luster. B ə ˈ s ɔː l t ˈ b eɪ s ɒ l t uk. Granite is available in black grey orange pink white colors whereas basalt is available in black brown light to dark grey colors.

It is mostly made out of quartz mica and feldspar. The granite cuts through the schist in first photo and cuts the schist s foliation in the second. The granite formed from underground lava called magma about 100 million years ago. Its high iron content gives it magnetic properties and it may show signs of rust when exposed to air.

Its principle minerals include pyroxene feldspar and olivine. The key difference between basalt and granite is that basalt is mostly occurring on ocean floors while granite is in the crust of the earth in all continents. Appearance of granite is veined or pebbled and that of basalt is dull and soft. The principle of cutting states when one feature cuts another the feature being cut is older the feature doing the cutting is younger.

Granite is a felsic rock meaning that it has a high silicon content. A deep black shiny luster. Basaltic crust is dark and thin and heavy while granite is light and accumulates. I have some gorgeous black basalt with white inclusions that i have been working on.

When we have to compare granite vs basalt the texture color and appearance plays an important role in determining the type of rock. It forms from lava flows which extrude onto the surface and cool. More than 90 of all volcanic rock on earth is basalt and the eruption of basalt lava is observed by geologists at about 20. It wants to be there and heat is the key which unlocks the door.

The granite is much older than the basalt. That s in the cretaceous period the last period in which the. The trick is to heat the basalt back up again so it can melt and give the iron another shot at the core. I have polished some of it with great results.

All rocks of igneous origin consist of magma or molten earth that finds its way up to.