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Author Topic: Geology on the beach  (Read 2421 times)

Offline nicco35

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Geology on the beach
« on: 24/01/2015 16:02:59 »
Hi, yesterday I was at the beach and took a picture of a couple of interesting photos geological formations. I wonder if you'd ever seen, if so, I would like to know what's going on.

1) What kind of formations? What is the type of rock? How is this kind of arrangement is called lamellae in this rock?

newbielink:http://nicco35.rajce.idnes.cz/fotky/#l.jpg [nonactive]

2)How to call these hardcover coast sloping at an inclination to the sea? What materials are composed?

newbielink:http://nicco35.rajce.idnes.cz/fotky/#lll.jpg [nonactive]

newbielink:http://nicco35.rajce.idnes.cz/fotky/#llll.jpg [nonactive]

3)What can these tubes and pipes? How to find themselves in the rock? How do they look
firmer and protrude from the rock?

newbielink:http://nicco35.rajce.idnes.cz/fotky/#nnn.jpg [nonactive]

Please, help me...
« Last Edit: 24/01/2015 16:04:43 by nicco35 »


 

Offline nicco35

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Re: Geology on the beach
« Reply #1 on: 24/01/2015 21:28:36 »
Please, help me with the questions.

Could you tell me, please... :(
 

Offline nicco35

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Re: Geology on the beach
« Reply #2 on: 25/01/2015 11:38:10 »
Please, help me. I know, that location is Hawai - Oahu, I found about road on the coast. Please, what is it? Are that marine sediments - corals or what, please...
 

Offline Bass

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Re: Geology on the beach
« Reply #3 on: 26/01/2015 16:31:13 »
First photo are cross-beds- these are common in windblown sands where dunes form (beaches and deserts).  Take a look at photos of Zion National Park in Utah for some good examples.
Second photos are reef corals- now limestone.  The low angle dip is probably due to the original slope, but may be due to uplift of the island.
Your last photo is not very clear- but my guess would be some sort of angular unconformity (or high-angle cross beds) with erosion resistant cap-rock.
 

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Re: Geology on the beach
« Reply #3 on: 26/01/2015 16:31:13 »

 

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