A Playa Lake Usuallycontains Laminated Mudstone

Rare bioturbation palaeosols.

A playa lake usuallycontains laminated mudstone. Skeletal and oolitic grindstone cross bedding and ripple marks. Fine grained well sorted mudstone to packstone. Een mudstone stone laminated tone mudstone d d stone trix d b reccia red e 5. B current rippled cross.

A laminated siltstone and mudstone. Deposits include three sedimentary facies. Flash cards for geol 221 history of the earth with heck at ferris state fsu. The playa lake depositional model for the three forks formation beatriz garcia fresca.

Deposition in distal terminal splay and shallow ephemeral playa lakes. Ripple and horizontally laminated mudstone clayey siltstone and very fine to fine grained sandstone in beds 0 1 to 0 5 m thick. Sedimentary successions are interpreted as having accumulated in a playa lake complex. Mudcracks starved ripples are common.

Red and green well laminated mudstone with very thin cm fine to medium grained sandstone layers. Upper regressive lake margin playa lake and mudflat deposits are light to dark gray silty mudstone to argillitic siltstone or very fine grained sandstone mostly thick bedded to massive with desiccation cracks intraformational breccias faint wavy laminations burrows euhedral pyrite grains and dolomite or calcite specks. A laminated siltstone and mudstone. Upper regressive lake margin playa lake and mudflat deposits are light to dark gray silty mudstone to argillitic siltstone or very fine grained sandstone mostly thick bedded to massive with desiccation cracks intraformational breccias faint wavy laminations burrows euhedral pyrite grains and dolomite or calcite specks.

Alluvial fan glacier lake lacustrine meandering stream fluvial desert eolian playa. One with mudstone and sandstone in roughly equal proportions fl a the other with a sandstone mudstone ratio of about 5 1 fl b fig. Deposits include three sedimentary facies. Playa lake depositional environment modern hardie et al.

In central pangea the depositional setting of the mid to late triassic mercia mudstone group in the wessex basin sw england uk was marked by playa lake deposits with red beds and local. B current rippled cross laminated very. Comprised of 20 to 70 cm thick thinning and fining upward sequences. Sedimentary successions are interpreted as having accumulated in a playa lake complex.