"The Pancake Rocks are a heavily eroded limestone area where the sea bursts though a number of vertical blowholes during high tides. Together with the 'pancake'-layering of the limestone (created by immense pressure on alternating hard and soft layers of marine creatures and plant sediments" from http://en.wikipedia.org/wiki/Punakaiki
It reminds me of charcoal, from firewood. I should have guessed limestone. The limestone we see here in AZ is streaked in layers. (Dolomite, my grandfather had a lot of dolomite rock. I always get it mixed up with quartz.)
"Redwall Limestone Exposed in and around the Grand Canyon. Stained red from iron oxide impurities, the 400-foot-thick Redwall Limestone extends over most of northern Arizona. If it formed in a shallow sea (25–50 feet deep), how did such great thicknesses develop? How could another famous limestone formation, the 6-mile-thick Bahamas Bank, form?"
.... actually, I think the ocean was much deeper thousands and thousands of years ago here, most of California was underwater and AZ was a marshland.
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Nina Lrain1967 # Friday, September 24, 2010 5:24:03 AM
cheekymonkeynz # Saturday, September 25, 2010 1:08:59 AM
Nina Lrain1967 # Saturday, September 25, 2010 6:07:28 AM
http://www.creationscience.com/onlinebook/webpictures/thumbnails/redwall.jpg
"Redwall Limestone Exposed in and around the Grand Canyon. Stained red from iron oxide impurities, the 400-foot-thick Redwall Limestone extends over most of northern Arizona. If it formed in a shallow sea (25–50 feet deep), how did such great thicknesses develop? How could another famous limestone formation, the 6-mile-thick Bahamas Bank, form?"
.... actually, I think the ocean was much deeper thousands and thousands of years ago here, most of California was underwater and AZ was a marshland.