The speckled mudstone of Santa Cruz is such an unusual site, I was in awe of the wonderful abstract nature to be found there. These unusual layers of rocks are at Natural Bridges State Beach. The first part of the state beach and natural preserve encompasses an eucalyptus forest where the monarch butterflies migrate to inthe fall and winter, then there is a river that flows into the beach area. The tidepools and bluffs are over to the right of the forest. There is also an arch just within reach of the beach that attracts photographers at sunset.
I cropped the image because of a shadow in the lower left corner. I also added a bit of contrast and some light saturation to bring out the spots. All comments and critiques are welcomed because I would like to know what you think. I was attracted to the geometry and abstract nature of the rocks.
"Santa Cruz's famous marine terraces, carved by the ocean waves some 80,000 years ago when the land lay lower and the sea level was steady. Since that time the sea has fluctuated and the land has risen. Several older terraces lie higher along the coast. The terraces are topped with a thin layer of beach sand and gravel. Today's seacliffs expose the older rock beneath. The underlying Santa Margarita Sandstone is full of organic matter. Beneath it, the Monterey Formation is even more so (it's the foremost of the Bay Area's petroleum source rocks). So for many thousands of years, natural gas and hydrocarbons have been rising through the Santa Cruz Mudstone, both before and after it turned from sediment to stone. They followed a set of millions of parallel cracks, or joints, made by the stresses of moving along the San Andreas fault. After that, chemically active water did the same, depositing iron minerals in the stone. You'll see that the iron mineralization is closely related to the jointing."(by Andrew Alden, www.sciencekqed.org)
Critiques | Translate
jjcordier (63042) 2012-04-09 23:09
Ton titre résume bien l'impression que l'on a en regardant la photo de cette formation rocheuse, la nature est une très grande artiste!J'aime ton cadrage serré et ce format carré choisi (j'aurais peut-être recadré encore un peu pour supprimer le coin noir en haut?)
corjan3 (1879) 2012-04-09 23:12
Congratulations on this beautiful image. It is always difficult to be precise from a photograph, in a genetic sense, but I am quite sure that the orange colour is caused by goethite (iron hydroxide) and the red-brown by haematite (ferrous iron oxide, the latter being partly hydrolised to form the goethite. And then, of course, they occur mixed in any proportion in your image. The distorted layering suggests either expansion due to water absorption or slumping along a slope (there clearly is microfaulting, in the upper right area, for example, which is common with both). I think it is a recent to present-day process with leaching, possibly of kaolinite (the white material), from a weathered feldspar rich unit up-slope, and precipitation along the slope. The red speckling probably is caused by the formation of concretions with iron oxide, an impurity also derived from the weathered source and dissolved in the pore water, migrating to nuclei of precipitation and forming spherical concretions there.
I tried to refrain from too much speculation. Thank you. It is a real pleasure to view. Best wishes.
Miguel82 (8567) 2012-04-10 5:42
An excellent composition, good yellow-brown colors
have a nice day
dkmurphys (37399) 2012-04-11 1:38
Interesting capture, I first thought there's a pizza bottom:P Great work, have a nice day.
photoray (4990) 2012-04-18 7:35
An "intimate vision" of geology for its intricate sedimentary patterns, multiple textures, and warm earth tones. And also a special place to me, like most of California.
In addition to the photogenic Santa Cruz natural features, I also love the Boardwalk, Steamer's Lane - 'surfers', and the Lighthouse.
mirosu (5557) 2012-08-02 9:26
This is a very nice art photowork. Nice colors with all wonderful details, excellently composed with well optimized crop, allowed most of the image to be filled with these very interesting geological patterns. Well done.
- Copyright: Karen Abel (kabel) (1013)
- Genre: Places
- Medium: Color
- Date Taken: 2012-04-08
- Categories: Nature
- Camera: Cannon Powershot Sx100
- Exposure: f/8, 1/500 seconds
- More Photo Info: view
- Photo Version: Original Version
- Theme(s): Remarkable Rocks [view contributor(s)]
- Date Submitted: 2012-04-09 22:00