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climbaddic
Mar 29, 2005, 4:42 PM
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I was wondering what is most common rock? Below is climbing areas I have been to and rock type (I don't know a proper name).
Granite: yosemite, little granite mountain, pinnacle peak, mcdowell, buttermilk, groom creek, Jtree, west elden, mountain lemmon (9)
Limestone: pit, jack's canyon, priest draw (3)
Sandstone: kelly's canyon, red rock, pine mountain (3)
Volcanic: happies, queen creek (2)
Basalt: paradise Folk, buffero park (2)
Diabase: Seneca Fall (1)
Quartsite (sp?): owen's river gorge (1)
Mud?: Camelback (1)
My guess is that Granite comes on top... Although my favorite rock is limestone.
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charley
Mar 29, 2005, 8:55 PM
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Around here it's usually wet... : :cry:
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james_climber
Mar 29, 2005, 9:38 PM
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it depends also of the altitude
near the beach's its common , limestone and granite
around my place there are a lots of types
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jumpingrock
Mar 29, 2005, 10:34 PM
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I thought Jtree was a quartzite
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elgecko
Mar 29, 2005, 11:41 PM
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- Owen River Gorge is welded tuff (same as the Happies, sads, etc)
- Joshua Tree is quartz monzonite (granitic)
It really depends on where you are (e.g. granitic rock if you're in the Sierra Nevada, sandstone on the Colorado Plateau, limestone on the Thai beaches)
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jpdreamer
Mar 29, 2005, 11:51 PM
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Geeze, most common in the world? I would guess limestone, as I speculate that under the oceans there is a shitload of limestone since it's basically compressed seabed.
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thegreytradster
Mar 29, 2005, 11:58 PM
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The most common rock type is Leaverite!
When I was a kid, every time me or my brothers picked up a rock and asked my dad what it was he replied, "Thats Leaverite! Just leave her right there"
Hence according to my even more ancient daddy Leaverite is the most common type of rock!
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nurocks
Mar 29, 2005, 11:59 PM
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As a dorky geologist...I am obligated to participate in this discussion. World wide, the most comon lithology (rock type) is mudstone. According to a stratigraphy prof. I had, he said it is by far the most abundant type. Granted this includes marine and silicate mudstones. So, yes limestones would be included in marine mudstones. I hope this clarifies more than it confuses...
Jason
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chossmonkey
Mar 30, 2005, 12:37 AM
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CHOSS!
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thegreytradster
Mar 30, 2005, 12:39 AM
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I think that's the same as Leaverite.
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gunksgoer
Mar 30, 2005, 1:09 AM
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er, im gonna go way out on a limb here and guess that the op was reffering to the most common rock type that people CLIMB.
If that is the case, granite or limeston probably wins.
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faust
Mar 30, 2005, 1:19 AM
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In reply to: As a dorky geologist...I am obligated to participate in this discussion. World wide, the most comon lithology (rock type) is mudstone. According to a stratigraphy prof. I had, he said it is by far the most abundant type.
as another dorky geologist, i have to assume your prof was only talking about sedimentary rocks. basalt is the most common rock type of the crust, making up the entire ocean floor.
-matt
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nurocks
Mar 30, 2005, 1:29 AM
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In reply to: In reply to: As a dorky geologist...I am obligated to participate in this discussion. World wide, the most comon lithology (rock type) is mudstone. According to a stratigraphy prof. I had, he said it is by far the most abundant type. as another dorky geologist, i have to assume your prof was only talking about sedimentary rocks. basalt is the most common rock type of the crust, making up the entire ocean floor. -matt
Again...all that is debatable. True the ocean floor is Basalt...but it is overlain by mudrocks. The only place the basalt is being deposited is around volcanic arcs or the mid ocean ridge. Mud rocks EVERYWHERE else.
You are right that the prof. He is primarily a sed. geologist by the way.
I'd love a third opinion.
Jason
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moeman
Mar 30, 2005, 1:36 AM
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In reply to: As a dorky geologist...I am obligated to participate in this discussion. World wide, the most comon lithology (rock type) is mudstone. According to a stratigraphy prof. I had, he said it is by far the most abundant type. Granted this includes marine and silicate mudstones. So, yes limestones would be included in marine mudstones. I hope this clarifies more than it confuses... Jason
"Mudstone"- sounds unpleasant. Conjures up images of some particularly nasty Fischer Towers choss...
Another thing you could look at is what rock gets climbed the most, i.e. what is most common at popular areas. Worldwide, I have no idea, but it would be easy to figure out for certain regions.
Australia: Sandstone
Europe: Limestone, with lots and lots of bolts
The U.S.: Probably either granite or sandstone- tough call. Granite has most of California, much of the Rockies and some of New England and North Carlolina going for it, but Sandstone has the Southeast (the red, the new, etc) as well as the great vast Colorado Plateau deserts (Moab, Sedona, etc). Things like limestone are probably out of the running- though popular, it is limited to a few sport climbing area scattered here and there (I'm not taking the Canadian Rockies into account). I'd probably put my money on granite.
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climbaddic
Mar 30, 2005, 4:37 PM
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Okay subtract the ocean. What is the most common rock type. I am still going with granite (isn't proper name for granite something like quartz monzonite sp?). What do you think is most common rock subtract the ocean floor. What is the most common rock people might climb on?
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greenketch
Mar 30, 2005, 5:19 PM
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Ya I would go with granite. But on the more technical side. Granite is a class of rock. monzonite is a granite, diorite is a granite to name a couple. What the granite is composed of is regional. I think that granite is second to mudstone. :wink: :wink:
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elgecko
Mar 31, 2005, 3:17 AM
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- The terms granite, diorite, and monzonite refer to granitic rocks of varying composition.
- Concerning basalt vs granite, the thicknesses of the crustal units need to be considered in addition to the aerial extent.
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padge
Mar 31, 2005, 4:13 AM
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Cummingtonite.
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