Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Veined Pebble (likely a Quartz-Veined Pebble)

Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)

Quartz Breccia

Brecciated Quartz Clasts in Siliceous/Sandy Matrix

Brecciated quartz-rich rock, possibly silicified breccia

Silica-rich breccia; chiefly microcrystalline quartz (SiO₂), with possible calcite and iron-oxide staining

Weathered breccia or conglomeratic sandstone

Clastic sedimentary rock, likely carbonate-cemented breccia/conglomerate

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

Brecciated stone pebble

Breccia

Polymict breccia

Lithic breccia; clast-rich, iron-stained breccia

Brecciated jasper or brecciated chert

Silica-rich breccia, chiefly microcrystalline quartz (SiO₂), with iron-oxide staining

Conglomerate

Conglomerate (Detrital Sedimentary Rock)

Conglomerate (possibly breccia)

Clastic sedimentary rock; chiefly quartz- and feldspar-rich clasts in a weathered iron-oxide cement

Breccia

Breccia - Clastic sedimentary rock

Brecciated quartz vein rock (likely quartz breccia)

Silicified hydrothermal breccia; predominantly microcrystalline and crystalline SiO₂ (quartz), with possible iron oxides and carbonate minerals

Conglomerate

Conglomerate (Sedimentary rock)

Conglomerate

Lithified, poorly sorted gravel; likely a carbonate-cemented conglomerate

Conglomeratic breccia (possibly polymictic volcanic breccia)

Polymictic breccia; clasts in a fine-grained volcanic or sedimentary matrix

Conglomerate

Conglomerate rock

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Clastic sedimentary rock (Conglomerate)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomeratic sandstone / breccia-like gravel rock

Polymictic conglomerate (possibly lithified gravel or concrete-like natural conglomerate)

Quartz-rich conglomeratic rock (likely granitic breccia or conglomerate)

Uncertain; quartz–feldspar rock in a fine-grained matrix, possibly weathered granite or polymictic conglomerate

Conglomerate (possibly concrete-like natural breccia)

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

Conglomerate

Clast-supported polymictic conglomerate; rounded quartz and other rock fragments in a dark matrix

Polymictic conglomerate (possibly impact breccia)

Lithified polymictic conglomerate/breccia; clasts appear mainly mafic volcanic rock, with quartz- or feldspar-rich fragments in a dark matrix

Polygenetic Breccia

Clastic Breccia (containing lithic fragments in a fine-grained matrix)

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

Lithified polymictic gravel; clasts may include basalt, granite, quartzite, and other silicates

Conglomerate

Clastic sedimentary rock (Puddingstone)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Conglomerate (possibly breccia)

Polymictic clastic conglomerate; rounded clasts in a dark, likely volcanic-lithic matrix

Brecciated rock (possibly fault breccia)

Polymictic breccia; exact lithology cannot be determined from the photograph

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Conglomerate / Breccia Matrix (Aggregated Rock)

Sedimentary Breccia / Conglomerate

Conglomerate

Clastic sedimentary rock (Conglomerate)

Conglomerate

Conglomerate (SiO2 matrix with various silicate clasts)

Conglomerate Pebble (with Chert / Quartz)

Sedimentary Conglomerate / Breccia Pebble

Brecciated polymictic rock, possibly impact breccia

Polymictic breccia; exact lithology indeterminate from image

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomeratic Sandstone / Sedimentary Breccia

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Clastic sedimentary rock (Polymictic Conglomerate)

Conglomerate

Clastic Sedimentary Rock (Puddingstone)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)