Baraboo Quartzite Interpreted

The bedding surfaces that enclose the cross beds are probably a better measure of what was once sub-horizontal and would be what one would measure to reflect the orientation of the strata in this outcrop. Note how the cross beds are roughly 30 degrees from then enclosing surface. In this small section there appears to be a relatively consistent paleocurrent direction to the right (east). The soft-sediment folds are marked by inferred erosion and truncation by the overlying unfolded beds, and also there somewhat irregular form with significant layer thickness changes. The large planar fracture the dandelion is growing in is a simple parting fracture. When such planar fractures have a common orientation they are known as joints. There are some other irregular and more discontinuous fracture surfaces that are subparallel to the large planar joint.

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