Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)

Weathered conglomeratic breccia

Polymictic conglomerate/breccia, likely iron-stained

Weathered sandstone or fine-grained sedimentary rock

Quartz-rich sandstone, possibly arkose or lithic sandstone

Rounded sandstone or siltstone cobble

Clastic sedimentary rock, likely quartz-rich sandstone (possibly fine-grained siltstone)

Pink granite or granitic gneiss

Coarse-grained quartz–feldspar–mica rock; likely granite, possibly weathered gneiss

Conglomerate

Polymictic Conglomerate

Weathered sandstone fragment

Quartz-rich sandstone, possibly ferruginous sandstone

Grey River Pebble (Greywacke / Basalt)

Stream-rounded silicate rock pebble

Ferruginous Conglomerate

Ferruginous Conglomerate (Clastic Sedimentary Rock)

Weathered quartz-rich pebble, likely sandstone or quartzite

Quartzite (SiO₂), possibly ferruginous sandstone

Rounded sandstone cobble

Quartz-rich sandstone, likely arkosic or lithic sandstone

Rounded yellow sandstone pebble

Quartz-rich sandstone, likely ferruginous or calcareous sandstone

Sedimentary Sandstone

Arenite (Sedimentary Rock)

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Granite or granitic gneiss

Granite; primarily quartz, feldspar, and mica (possibly weakly foliated gneiss)

Polymict breccia

Volcanic breccia (clast-rich pyroclastic rock), compositionally likely andesitic to basaltic

Conglomerate (or Breccia)

Clastic Sedimentary Rock

Conglomerate / Breccia Matrix (Aggregated Rock)

Sedimentary Breccia / Conglomerate

Breccia

Lithic breccia (angular rock fragments cemented in a finer matrix)

Weathered feldspathic sandstone

Quartz–feldspar sandstone (arkose), with iron-oxide staining

Quartzite

Quartzite (primarily SiO2)

Breccia

Breccia (Sedimentary Clastic Rock)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomerate (Clastic sedimentary rock)

Conglomerate (possibly concrete-like natural breccia)

Lithified, poorly sorted clastic rock with angular to subrounded mineral and rock fragments in a finer matrix

Chert Breccia

Brecciated Chert

Weathered polymictic rock fragment, likely granite-rich conglomerate

Indeterminate mixed lithology; apparent granitic clasts containing quartz, feldspar, and dark mafic minerals

River Rock / Stream Pebble

Fluvial Clast / Rounded Sedimentary Particle

Fossiliferous conglomeratic sandstone

Clastic sedimentary rock, likely quartz–feldspar sandstone with lithic granules and shell/bioclastic fragments

Conglomeratic gravel / lithified alluvial deposit

Polymictic conglomerate or pebble-rich sandstone (likely weakly cemented)

Weathered sandstone

Quartz-rich sandstone, locally iron-oxide stained (SiO₂-dominant)

Polymictic conglomerate

Clast-supported conglomerate, typically quartz- and feldspar-rich in a dark matrix

Weathered iron-rich sandstone or ferruginous quartzite

Ferruginous sandstone; possibly hematite/goethite-cemented quartzite

Rounded weathered stone, likely quartz-rich sandstone or fine-grained volcanic rock

Indeterminate hand specimen; probable quartz–feldspar sandstone (SiO₂-rich)

Puddingstone

Conglomerate (specifically a type of jasper conglomerate or quartz conglomerate)

Weathered granite, possibly pink granite

Granite; chiefly quartz, alkali feldspar, plagioclase, and biotite/hornblende

Weathered quartz-rich sandstone or granitic rock

Indeterminate; likely iron-stained quartz sandstone, possibly weathered granite

Weathered granite or granitic gneiss

Granite; primarily quartz (SiO₂), feldspar, and mica, possibly with metamorphic foliation

Weathered quartz-bearing rock, possibly quartzite or feldspathic sandstone

Quartzite (SiO₂-rich), with possible iron-oxide staining and feldspar/mica impurities

Granite (weathered, possibly granitic gneiss)

Granite; chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Chert nodule in sandstone or iron-stained host rock

Microcrystalline quartz (SiO₂), likely chert/flint

Quartz-rich metamorphic pebble, likely quartzite

Quartzite, composed predominantly of quartz (SiO₂)

Reddish-brown rock fragment, possibly iron-stained sandstone

Unidentified iron-oxide-stained rock; sandstone is a tentative visual identification