Examples of siltstone

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The lower c. 20 m obviously show a dominating sequence of siltstones that are occasionally flaser-bedded.
Again, flaser-bedded siltstones and finegrained sandstones alternate rhythmically.
In the field it appears to be quite similar to maroon mottled siltstone except for its clayey nature.
The trackways were found in the laminated fine sands and siltstones at the tops of fining-upwards sequences.
Beds of dark grey, centimetre-bedded very fine sandstone and siltstone occur in units a few tens of centimetres thick.
Numerous thin sandstone beds (in general about 10 cm thick) are separated by thicker units of flaser-bedded siltstones and mudstones.
The volcaniclastic siltstone is composed of crystals (olivine, pyroxene, quartz), glass (globules and irregularly shaped shards) and rock fragments.
Interbedded thin fine-grained sandstone and siltstone layers are laminated and wavy in nature.
The siltstones commonly contain detrital white mica flakes that are generally lacking in the sandstones, and are possibly of distal continental origin.
Siltstone occurs in structureless or horizontally laminated beds 0.5 to 1.5 m thick.
This siltstone unit lies upon a conspicuous erosion surface highlighted by angular chips of phosphatized pebbles and ammonites.
The sections also contain subordinate amounts of siltstone, limestone and dolostone.
The siltstone facies is composed of two subfacies: siltstone and sandy siltstone.
The coarse-grained lower part is chiefly composed of cross-bedded sandstone and the finer-grained upper part includes rippled silty sandstone and bioturbated sandy siltstone.
The host lithologies are mudstones, siltstones, minor black limestones and subordinate sandstones, with numerous disturbed beds composed of any or all of these lithologies.
The formation consists of fine-grained, thinly bedded, silty sandstones and siltstones which were deposited in a turbidite setting.
The sequence consists of a great variety of cross-bedded sandstones, conglomerates, siltstones, shales and rare oolitic intercalations.
There are black mudstones interbedded with the siltstones.
Where bioturbation is absent, the finer units consist of millimetre-scale bedding between siltstone and fine-grained sandstone.

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