Friday, May 3, 2013

Volcanic rock forming patterns in the sand

This is a wider view of the type of sand and rock patterns that I showed yesterday.  The ocean floor under the water at Playa Langosta is the remains of a volcanic lava flow.  There is dark volcanic rock that is under the water at high tide, but is exposed at low tide.

In some parts of the beach, the volcanic rock forms tide pools to explore.  In this location, sand has gathered to fill in the low spots in the rock, leaving the ridges of the volcanic rock exposed in these patterns.

Welcome to Costa Rica, President Obama!  Later today President Obama will arrive in Costa Rica for a quick visit.  He will hold meetings with Central American government and political leaders in the capitol of San Jose.  Hopefully this will lead to enhanced economic opportunities for all countries in the region.  He is the first AMerican President to visit Costa Rica since President Clinton nearly 20 years ago.

This week we have photos from the bottom of the Grand Canyon, including a photo of the endangered chubb fish, posted on our Viva la Voyage travel photo site.

5 comments:

Kate said...

The volcanic rock on Lake Superior is very large...This looks almost "delicate" so I wonder if the sand just covers up huge portions. Geology is fascinating, isn't it?

Sharon said...

I remember seeing this on the beach.

Judy said...

I guessed right. Matures work of art.

Lowell said...

Very interesting. I wonder if areas where volcanic rock is exposed are more difficult to walk on barefoot.

Best wishes for President Obama's visit!

Jack said...

This is an interesting phenomenon. I still think Jackson Pollock had something to do with it.

Related Posts Plugin for WordPress, Blogger...