Beautiful Blues at Beverly Beach!

These rocks appear to be a type of sedimentary rock, likely a sandstone or shale, with some interesting features. The blue-gray coloration and the layered, striated texture suggest it could be a mudstone or siltstone that has undergone some degree of alteration, possibly due to mineral content or weathering processes. The presence of yellowish-brown veins or streaks might indicate iron oxide or other mineral deposits, which are common in coastal sedimentary rocks exposed to the elements.
Given the context of Beverly Beach, Oregon, this rock could be part of the geological formations found along the Oregon Coast, where sedimentary layers from ancient marine environments are often exposed. These layers can contain fossils or impressions, as the area is known for fossil hunting. The blue hue might also hint at the presence of reduced iron or other minerals, which can give rocks unusual colors when exposed to air and water over time.
Without a closer analysis (like a sample test or expert fieldwork), it’s hard to be definitive, but this looks like a weathered sedimentary rock, possibly a siltstone or mudstone with mineral staining.