Rudstone
Videos
The Dunham classification did not consider grain size as a criterion for the description of carbonate lithologies. In an attempt to rectify this perceived deficiency, Embry & Klovan introduced the ter
Rudstone with micrite. Width of picture is 36mm
Rudstone with sparite. Width of picture is 36mm
Lithology
Videos
The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour
Stratigraphy as seen in southeastern Utah
A basalt, showing the 'pillow' lava shape characteristic of underwater eruptions, Italy
A claystone, the finest-grained sedimentary rock, deposited in Glacial Lake Missoula, Montana
An ultramafic mantle xenolith with olivine and pyroxene (altering brown to iddingsite) in a matrix of mafic basalt scoria