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Author Topic: Where in the world?  (Read 231423 times)

Offline JimBob

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« Reply #25 on: 15/05/2007 01:49:29 »
Ocean Hole, Bahamas - or one of the other now drowned sink holes there-in.
 

Offline Bass

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« Reply #26 on: 16/05/2007 01:56:49 »
Close- also a famous dive spot
 

Offline ukmicky

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« Reply #27 on: 16/05/2007 20:55:44 »
Bass

I'll make it a sticky for a while to see how well it does. If it does well we will see if it warrants permanant sticky status.
 

Offline Bass

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« Reply #28 on: 17/05/2007 20:26:09 »
ukmicky
Thanks- hopefully other folks will post some of their favorite (but still recognizable) places.

Last photo was of the Great Blue Hole in Belize in the Caribbean.  As JimBob mentioned, this formed as a sinkhole (karst) during the ice age when sea levels were several hundred feet lower (similar to several smaller sinkholes that have opened up in Florida the last few years, gobbling up cars, businesses and homes in the process).  Had the opportunity to dive here 20 or so years ago, incredibly beautiful.  While diving, my wife enjoyed the beach life and took out several large life insurance policies on me- pity her gamble didn't pay off! :o
 

Offline Bass

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« Reply #29 on: 17/05/2007 20:36:13 »
How about this one?
 

Offline JimBob

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« Reply #30 on: 19/05/2007 21:24:29 »
I can't remember the name but it is an island off the coast of Portugal.
 

Offline Bass

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« Reply #31 on: 20/05/2007 17:15:55 »
Couple of hints:
Part of a small group of volcanic islands
One of the most unique ecosystems on earth
If a dog is man's best friend, this arch is named for the person who made the beagle famous.
 

Offline ichnos

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« Reply #32 on: 23/05/2007 22:00:52 »
you give it away.. Darwin arch?...Galapagas islands?... i wish and dream.... :)
« Last Edit: 23/05/2007 22:18:49 by ichnos »
 

Offline ichnos

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« Reply #33 on: 23/05/2007 22:19:23 »
where/what is/are this/these?!
 

Offline Bass

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« Reply #34 on: 25/05/2007 22:20:41 »
Wow, spectacular!  I've seen similar formations in Turkey, and also in parts of the southwest US and in Mexico- but the vegatation and architecture looks wrong for all those places.  Italy perhaps?
 

Offline ukmicky

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« Reply #35 on: 26/05/2007 00:27:05 »
Nice picture ,i just hope they never have an earthquakes
 

Offline JimBob

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« Reply #36 on: 26/05/2007 20:52:28 »
I would call them flat irons - the term here in the US. They are formed when strata is tilted. Can be at any degree from horizontal, just so long as there is a competent layer to be left after prolonged erosion. These are apparently vertical.

As for place - hard to tell. If the red color is from the sunset, then the rocks could be any color from neutral grey-white to red.

Like Bass I would guess from the architecture italy, but since you have been to northern Spain, probably there.

 

Offline kdlynn

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« Reply #37 on: 27/05/2007 02:55:08 »
i can't see the picture, but i just saw some red flat irons last week, so it may not be a reflection
 

Offline Karen W.

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« Reply #38 on: 27/05/2007 19:41:35 »
i can't see the picture, but i just saw some red flat irons last week, so it may not be a reflection

Actually Kadie it looks much like one of your pictures! LOL I must go look again..LOL
 

Offline Karen W.

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« Reply #39 on: 27/05/2007 19:54:37 »
It is your red flat Iron Picture..LOL
 

Offline kdlynn

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« Reply #40 on: 27/05/2007 20:01:37 »
oh how weird. ha ha ha
 

Offline Karen W.

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« Reply #41 on: 27/05/2007 21:29:25 »
LOL LOL...Kadie LOL..You are so Funny..LOL HEE HEE HEE!
 

Offline ichnos

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« Reply #42 on: 28/05/2007 13:35:07 »
err.. whats a flat iron? like an iron for ironing clothes?!  ??? they're Los Mallos de Riglos near Huesca in north Spain. They're alluvial fan deposits sourced from the Pyrenees - really beautiful and the view from the top is stunning with beautiful eagles and vultures... :)
 

Offline Karen W.

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« Reply #43 on: 28/05/2007 17:07:34 »
WHat are you seeing That I am not..what are alluvial fan deposits  a stretch of land somewhere I have heard of the alluvial fan just recently I saw a picture .. how does that relate to these massive rocks..?
 

Offline Bass

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« Reply #44 on: 28/05/2007 18:31:14 »
Flat irons are geologic formations where tilted beds are eroded leaving triangular shaped cliffs and steep ridges

Iceberg Ridge, Arizona

In Ichnos' photo, the alluvial fan deposit bedding is close to horizontal- so these are not true "flat-irons" even though they look like several of the classical flat-irons here in the southwest U.S.  Alluvial refers to water-deposited, and alluvial fans are most common in dry (desert-like) areas prone to flash floods.  In areas of steep relief, these flash floods quickly erode lots of material, which is then deposited when the flood waters reach gentler slopes below- in this case, as Ichnos stated, at the base of the Pyrenes Mountains.  Given time, alluvial fans can grow to thousands of feet thick.

Your photo gives me wanderlust once again!
« Last Edit: 28/05/2007 18:38:49 by Bass »
 

Offline Karen W.

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« Reply #45 on: 28/05/2007 19:04:09 »
Thanks Bass!! Nice picture also!
 

Offline JimBob

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« Reply #46 on: 28/05/2007 20:41:53 »
Here is a picture from Texas Tech University of the first flat irons I ever say. They are in the Marathon Basin of the Big Bend area of Texas. The picture is of a breached anticline. The white flat irons are formed by the highly erosion resistant Silurian (???? some date it Silurian to Mississippian or Lower Carboniferous) Caballos Novaculite. In the middle of the anticline are the Maravillas Limestone and the Woods Hollow Shale. The weathering has left the more competent Caballos standing while the older Ordovician rocks have been eroded away. They are at 35-40 and much more spectacular up close.


CREDIT -- http://www.gesc.ttu.edu/FT/GEOSCI_FT_BBF04.html

Novaculite is a highly indurated silicate of probable deep basin origin, although it's considered by a few to be a history of volcanic ash. The radiolarian fossils and algae found in it argue strongly for it having first been a radiolarioan ooze. It is also overlain by a very coarse, progradational deep sea conglomerate, The Tesnus formation. Wonderful place to do field work.

 

Offline Bass

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« Reply #47 on: 02/06/2007 06:24:42 »
Closer to home (for many of you):

 

Offline ichnos

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« Reply #48 on: 04/06/2007 16:41:00 »
giant's causeway - Northern Ireland - beautiful  :)
 

Offline Bass

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« Reply #49 on: 04/06/2007 17:02:49 »
correct again-
The rock here is columnar basalt (volcanic)- when the lava flow is thick enough to allow slow cooling, shrinking during cooling forms columns with the hexagonal shapes shown.
 

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« Reply #49 on: 04/06/2007 17:02:49 »

 

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