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Toggle the table of contents. Bodeidda Mudstone. ... The Bodeidda Mudstone is a geologic formation in Wales. ... Various Contributors to the Paleobiology Database.
The Penarth Group is a Rhaetian age lithostratigraphic group (a sequence of rock strata) which is widespread in Britain.It is named from the seaside town of Penarth near Cardiff in south Wales where strata of this age are exposed in coastal cliffs southwards to Lavernock Point.
Despite the formation being nearly entirely marine, at several localities abundant remains of terrestrial microvertebrates are found, the primary locality being the Kirtlington Mammal Bed (designated 3p) in Kirtlington Quarry near Kirtlington, Oxfordshire. [3]
In the Dunham classification (Dunham, 1962 [11]) system of limestones, a mudstone is defined as a mud-supported carbonate rock that contains less than 10% grains. Most recently, this definition has been clarified as a matrix-supported carbonate-dominated rock composed of more than 90% carbonate mud (<63 μm) component .
A mudstone is a siliciclastic sedimentary rock that contains a mixture of silt- and clay-sized particles (at least 1/3 of each). [5] The terminology of "mudstone" is not to be confused with the Dunham classification scheme for limestones. In Dunham's classification, a mudstone is any limestone containing less than ten percent carbonate grains.
It predominantly consists of thinly bedded mudstone. [1] The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking . The formation was deposited in lagoonal , lacustrine and alluvial conditions that varied from freshwater to brackish . [ 2 ]
Data sources: Social Security Administration and UMass Boston's Elder Index. There are a few caveats here. First, Colorado and Utah tax the Social Security benefits of some of their residents.The ...
Toggle the table of contents. Lorraine Group. Add languages ... and the Whetstone Gulf Formation [1] Overlies: Trenton Group: ... Various Contributors to the ...