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Obsidian
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∙ 12y ago
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What are 2 uses of volcanic rock?
I think there are more than two uses of volcanic rock. There are two FORMS of volcanic rock. One is pumice and the other is obsidian. Pumice is often used for landscaping, personal beauty uses (callus removal), etc. The other is obsidian. Obsidian is like glass and ancient people's used it for tools. Knives, arrowheads, and other tools that one would want to have a sharp edge are perfect uses of obsidian. In modern times, obsidian is used for jewelry, art, and even some modern day surgical tools. Check out geology.com if you have more questions about rocks...
How much is a Cumberland arrowhead worth?
Well if it is authentic it would be worth from $100 to $30K depending on the size, material, workmanship, condition, and color. But if it is a reproduction which the mass majority are then it would be worth $10 to $50 also based on the above.
Is quantum of solace better than twilight?
if i would to watch Solace is better...
Is it better to share a bedroom or to have your own?
i think it's better to have your own bedroom than to share one , but it would be better to have a big bedrrom !
Which is better a doctor or a engineering?
Assuming that you are capable of becoming any one of them, you need to figure out which one would make you happier. If more money would make you happier, then "doctor" would be a better choice, under the above assumptions.
Which rock obsidian or gabbro would make a better arrowhead?
Obsidian. It has very fine grain or is amorphous, and it has a conchoid fracture, so it can be worked to a sharp edge and point. Gabbro, on the other hand, has a very coarse grain and it difficult to get and edge or point on at all.
What is example of igneous rock?
Basalt and pumice.
What rock form from molten?
Rocks formed from solidified molten rock are classified as igneous rock. Examples would be basalt, granite, gabbro, pumice, obsidian, and rhyolite.
What clasts would you obtain if you crushed gabbro?
When you crushed Gabbro you would obtainOlivine, Pyroxene(Augite), and Plagioclase
What is 1 example of an igneous rock?
Any rock that erupted on (lava) or within the Earth or crystallized from molten rock (magma). Such rock would fall into two categories: Intrusive (crystallized within the Earth), granite, gabbro, diorite, pegmatite, peridotite and extrusive (erupted and crystallized on the surface) rhyolite, andesite, obsidian, basalt, tuff and pumice.
Is gabbro a felsic rock?
No. Gabbro is mafic-ultramafic. An example of a felsic rock would be a granite or rhyolite.
What are the parent rocks of gabbro?
Gabbro is an igneous rock, and therefore does not have a parent rock as would a metamorphic rock. Gabbro is an intrusive igneous rock formed from the slow cooling and solidification of mafic magmas deep underground.
Why would basalt and gabbro generally have higher chemical weathering rates than rhyolite and granite?
The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown.
How do you use Obsidian in a sentence?
In the 1800's, many Native Americans would sharpen obsidian into spear tips.
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
What are some examples of intrusive igneous rock?
Granite and gabbro are the two biggies, granite being formed underground by felsic magma, and gabbro being formed underground by mafic magma. Diorite and peridotite are two others.
Could carbon-14 be used to date a stone arrowhead found at an ancient burial site?
A:Carbon-14 dating could not be used directly from the arrowhead itself. However, the bones associated with the arrowhead could be dated by this method, if they are sufficiently recent for this method. If the arrowhead is properly associated with the bones, you would then know its age.
