Rietoog, Driedoornvlagte pinnacle reef complex: Ediacaran, Namibia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Namapoikia rietoogensis n. gen., n. sp. Wood et al. 2002
informal Thrombolite indet.
informal Stromatolite indet.
Cloudinidae
Cloudina sp. Germs 1972
unclassified
Namacalathus sp. Grotzinger et al. 2000
see common names

Geography
Country:Namibia
Coordinates: 23.9° South, 16.7° East (view map)
Paleocoordinates:41.4° South, 179.2° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Ediacaran
Key time interval:Ediacaran
Age range of interval:635.00000 - 541.00000 m.y. ago
Stratigraphy
Geological group:Nama Formation:Zaris Member:Omkyk
Stratigraphic resolution:group of beds
Stratigraphy comments: An ash bed that immediately overlies the Omkyk Member has been dated as 548.8 +/- 1 My B.P.
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Lithology description: The reef complex is over 300 m thick and at least 7 km long. Bioherms individually form elliptical mounds that reach up to 20 m in diameter, 5 to 10 m in width, and 5 m in height. Bioherm cores were constructed by massive thrombolites, often with entrapped Namacalathus; the outer layers consist of stromatolites up to 0.75 m thick. Fissures are abundant and occur with a spacing of up to three per meter. Remaining void space is filled with large neomorphosed aragonitic botryoids up to 15 mm in radius.
Environment:reef, buildup or bioherm
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Reef 4124
Database number:113370
Authorizer:W. Kiessling Enterer:U. Merkel
Modifier:M. Krause Research group:marine invertebrate
Created:2011-07-28 23:20:32 Last modified:2018-01-29 09:21:58
Access level:authorizer only Released:2012-07-28 23:20:32
Creative Commons license:CC BY
Reference information

Primary reference:

36793. R. A. Wood, J. P. Grotzinger, and J. A. D. Dickson. 2002. Proterozoic Modular Biomineralized Metazoan from the Nama Group, Namibia. Science 296(5577):2383-2386 [W. Kiessling/U. Merkel]