geologists day. learning geology. conglomerate rock cliff - lithuania, stakai. autumn colors, leaf, warm colors, natural

conglomerate cemented background texture stone geology closeup detail surface material pebbles structure textured natural nature beach rock brown unearthed sedimentary lithuania indentation dislodged deposition agglomerate round rounded stakai boulders daytime eurypterids old outdoor fragments sphere sunlight outcrop geoscience autumn conglomeration abstract tufa embedded tuff petrology cliff quartzite