Laminated Shale Facies

The black shale facies consists of black dark gray or dark brown.

Laminated shale facies. Shale facies labette county exposure. About 1 m 3 3 ft of medium gray n6 to medium olive gray 5yr6 1 shale lies directly beneath the amoret limestone member in a roadcut in the se corner of sec. Shale is a fine grained hard laminated mudrock consisting of clay minerals and quartz and feldspar silt. Types 3 7 can be only found in laminated sand shale in local areas e.

The coal seams and carbonaceous shale fa 5 were deposited in swamps. Facies related to inflow and outflow of water bohacs et al 2003. High organic content due to anoxoic conditions. Lower part of shipai formation in well cs1 which reflect turbulent sedimentary environment with varying sediment supply and water body.

On the basis of a variety of sedimentary textures and structures six main sedimentary facies have been defined from four 0 3 meter intervals in a 68m 223 ft long barnett shale core. 18 e labette county kansas. Cross stratified c quartz arenite. Typically flat laminated shale and mudstone.

Within the first part of the succession there occur the heterolithic muddy micrite massive sandstone calcrete and laminated shale facies. These facies are controlled by water level and discharge into the lake. 3 facies associations were proposed by bohacs et al 2003 figure 4. Parallel laminated f quartz arenite.

This term is confined to argillaceous or clay bearing rock. Types and distribution of the shale sedimentary facies of the lower cambrian in upper yangtze area south china. Phosphatic black shale pyritic black shale and fossiliferous black siltstone fig. It must have at least 50 percent of its particles measure less than 0 062 mm.

Laminated red shale. The black shale facies can be described as having three variations. Trough cross bedded vc quartz arenite. Shale is a fine grained sedimentary rock that forms from the compaction of silt and clay size mineral particles that we commonly call mud this composition places shale in a category of sedimentary rocks known as mudstones shale is distinguished from other mudstones because it is fissile and laminated.

These variations are equivalent to lange s 2003 phosphatic shale and dark gray shale facies.