so this is my first time here because I need help in identifying the features on this rock formation. https://www.flickr.com/gp/158064920@N05/6USrY9
Thank you in advance.
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in picture 11 there is erosion by water and wind.
it is sandstone and this is easily eroded by water each time it rains the water takes particles of the sandstone and moves them down the mountain.
sorry for this short and bad answer,it was a simple question so the answer is simple too.
The long vertical lines on "Earth 11" are not joints, but are rills. As water flows across the surface and becomes turbulent, it picks up the unprotected sediment and carries it off.
There is no reason to believe that "Earth 13" is a fault, unless you found slickenlines or other fault features. The overlying rock is indeed a conglomerate (specifically an orthoconglomerate), and the rock below appears to be a sandstone. It's hard to say if the contact is conformable or not, but the gap between the two rocks probably doesn't represent a huge amount of time.
Such deposits are similar in fluvial settings. Basically, as a river meanders back and forth, the stream capacity is always in flux. That means there are times when the river is eroding, and there are times when the river is depositing sediment. The sandstone was probably deposited on a point bar in slower moving water than the conglomerate, which was deposited by faster moving water.
In summary: this formation is probably the result of a paleoriver. Rounded conglomerates, such as the one in the image, are typical of fluvial deposits. (Angular conglomerates usually have different depositional settings). Alternating packages of siltstone, sandstone, and conglomerate are also typical of fluvial deposits
PS - I'm a licensed geologist, so I like to think I know what I'm talking about.