Sedimentary rocks are normally deposited as horizonal layers. Even when folded or tilted by faulting the originally horizontal layering is obvious. Upon closer examination, however, you may see very fine layers (usually 1 to several mm thick) that are at an angle to the main bedding. These tilted layers contained within larger layers are termed cross bedding. - http://www.pitt.edu/
CROSS-BEDDING is a feature that occurs at various scales, and is observed in conglomerates and sandstones. It reflects the transport of gravel and sand by currents that flow over the sediment surface (e.g. in a river channel). sand in river channels or coastal environments
When cross-bedding forms, sand is transported as sand-dune like bodies (sandwave), in which sediment is moved up and eroded along a gentle upcurrent slope, and redeposited (avalanching) on the downcurrent slope (see upper half of picture above). After several of these bedforms have migrated over an area, and if there is more sediment deposited than eroded, there will be a buildup of cross-bedded sandstone layers. The inclination of the cross-beds indicates the transport direction and the current flow (from left to right in our diagram). The style and size of cross bedding can be used to estimate current velocity, and orientation of cross-beds allows determination direction of paleoflow. - http://www.indiana.edu/
How to get credit and log your find.
You must answer the questions to get credit. Please email them to me within 48 hours of logging your find. If no answers are received within the allotted time I will delete your find log! This is in an effort to keep things fair. Please do not post your answers in your log. If you do I will delete it!
Send an email to me with the first line reading GC6527A CROSS BEDDING. In the email answer the following questions:
1. Is the base of this rock face a good example of Cross-Bedding?
2. Observing the rock face which direction was the current flowing when the deposits were made (right to left or left to right)?
3. Based on the deposits was the current that formed the deposit going FAST or slow? As you look left to right did the flow stay constant, slow down or increase? Explain your reasoning.
Post A PIC WITH YOUR LOG
As of June 10th, 2019 GC HQ updated the requirements for logging an EarthCache to allow the CO to request the visitor to "…provide a photo of themselves or a personal item to prove they visited the site. A personal item must be an option for those who do not want to photograph themselves. This task is acceptable only as an addition to well-developed logging tasks, not as a substitution."
So as of 06/10/19 "all" logs MUST have a pic attached with either the cacher (or group of cachers) prominently in it OR a personal item (GPS/printed icon/etc.) I will not accept cell phones as a personal item because 1) you more than likely would be using it for the pic 2) Cell phone, in my opinion, is too generic for a "personal item."If you post a group pic you MUST list the cachers names in you log.
Faliure to follow this or any part of the logging tasks will result in disqualification and your log will be "deleted!"
To get to the cachce location is a moderately strenuous hike up a slot canyon that constantly has water running down it. Please be aware that the city of Kanarraville has a $10 per vehicle fee to park at the trail head and that it is illegal to park on the side streets leading up to the trail head. If rain is in the forecast PLEASE DO NOT ATTEMPT TO HIKE THIS CANYON! Too many people loose their lives to flash flooding every year in slot canyons. Make sure you're not one of them!
Special thanks to the State of Utah School and Institutional Trust Lands Administration for granting permission to place this cache.
This cache placed by a:
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