Black Marble Quarry (Wallowa terrane): Late/Upper Triassic, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Patruliuspora oregonica n. sp.
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| MQ-48R-2 [MHNG-GEPI-2020-0062] | ||||||||||
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Ulvophyceae
- Bryopsidales
- Udoteaceae
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Udoteaceae indet.
Endlicher 1834
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Ulvophyceae
- Bryopsidales
- Halimedaceae
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Collarecodium ? nezpercae
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Thaumatoporellales
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Thaumatoporella sp.
Pia 1927
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Chlorophyceae
- Dasycladales
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Dasycladales indet.
Kützing 1860
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Thyrsoporella multipora
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unclassified
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Cyanobacteria indet.
Stanier 1973
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Oregon |
| Coordinates: | 45.4° North, 117.4° West (view map) | ||
| Paleocoordinates: | 19.6° North, 53.3° West |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| 10 m.y. bin: | Triassic 3-4 | ||
| Key time interval: | Late/Upper Triassic | ||
| Age range of interval: | 237.00000 - 201.40000 m.y. ago |
Stratigraphy
| Stratigraphy comments: Age-diagnostic fossils (ammonoids) found by Nolf (1966, p. 54) would position such levels within the Lower Norian, Kerri Zone. |
Lithology and environment
| Primary lithology: | lithified mudstone |
| Secondary lithology: | lithified packstone |
| Lithology description: The Black Marble Quarry (BMQ) is well-known for its foraminiferal content, particularly rich in involutinids (Kristan-Tollmann & Tollmann 1983; Rigaud et al. 2010, 2012, 2013ab, 2015a-b, 2016) and for its giant wallowaconchid bivalves (Stanley 1979; Yancey & Stanley 1999). It presents a foraminiferal assemblage typical of the Norian (see Koehn-Zaninetti 1969; Blau & Schmidt 1990), including the Norian marker Aulosina oberhauseri (Koehn-Zaninetti & Brönnimann 1968). The dark grey to black, restricted lagoon limestone beds in which algae have been discovered are found in the first fifty meters of the quarry, below the transition to a more open marine facies (Scotch Creek Member) of the Martin Bridge Formation (see Rigaud 2012 for details) | |
| Environment: | lagoonal/restricted shallow subtidal |
| Geology comments: Organic-rich limestone, restricted lagoonal facies (Involutinid-rich Mudstone to Packstone) | |
Taphonomy
| Modes of preservation: | body,original aragonite,replaced with calcite |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | all macrofossils |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 234338 | ||
| Authorizer: | W. Kiessling | Enterer: | T. Jujihara | Research group: | marine invertebrate |
| Created: | 2024-03-30 08:22:03 | Last modified: | 2024-03-30 08:22:03 |
| Access level: | the public | Released: | 2024-03-30 08:22:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 87972. | I. I. Bucur, S. Rigaud, N. Del Piero, A. Fucelli, E. Heerwagen, C. Peybernes, G. Peyrotty, C. Verard, J. Chablais and R. Martini. 2020. Upper Triassic calcareous algae from the Panthalassa Ocean. Rivista Italiana di Paleontologia e Stratigrafia 126(2):499-540 [W. Kiessling/T. Jujihara] |