F-1 (200-300 ft), Eniwetok Atol: Early Pleistocene, Marshall Islands
collected by ONR and USGS 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ulvophyceae - Bryopsidales - Halimedaceae
Halimeda sp. Lamouroux 1812
Gastropoda - Caecidae
Ladd 1972
Ladd 1972
Gastropoda - Skeneidae
Ladd 1966
Bivalvia - Cardiida - Cardiidae
Cardium sp. Linnaeus 1758
Bivalvia - Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758
Bivalvia - Arcida - Arcidae
Arcidae indet. Lamarck 1809
Listed as "arcids"
Anthozoa - Scleractinia - Poritidae
Porites sp. Link 1807
see common names

Geography
Country:Marshall Islands
Coordinates: 11.7° North, 162.2° East (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Quaternary Epoch: Pleistocene
10 m.y. bin: Cenozoic 6
Key time interval: Early Pleistocene
Age range of interval: 2.58 - 0.774 m.y. ago
Stratigraphy
Local section:F-1 Local bed:250 ft
Local order:top to bottom
Regional section:Eniwetok Atol Regional bed:250 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Early Pleistocene, on the basis of stratigraphic position. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 200-300 ft.
Lithology and environment
Primary lithology:shelly/skeletal,yellow poorly lithified "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Coral-head limestone, fragments of colonies, yellow calcite. LITHIFICATION: Poorly-lithified on the basis of facies description and figured specimens.
Environment:reef, buildup or bioherm
Geology comments: ENVIRONMENT: Carbonate facies. Shallow water, assumed to be reefal. No paleoenvironmental data presented.
Taphonomy
Modes of preservation:body,mold/impression,replaced with calcite
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Collection methods:core,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UNSM
Collectors:ONR and USGS Collection dates:1952
Collection method comments: COLLECTOR: Office of Naval Research and USGS, 1952. REPOSITORY: USNM.
Taxonomic list comments:COEVERAGE: Representative, but not exhaustive of bivalvia and gastropoda. NOMENCLATURE: Mixture of some slightly antiquated and broad identifications and more modern nomenclature, subgenus- and species-level identifications from an authoritative publication. IDENTIFIER: H. S. Ladd.
Metadata
Database number:43333
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-08-12 02:52:20 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2005-08-12 02:52:20
Creative Commons license:CC0
Reference information

Primary reference:
11427. H. S. Ladd and S.O. Schlanger. 1960. Drilling operations on Eniwetok Atoll. United States Geological Survey Professional Paper 260(Y):863-903 [A. Miller/A. Hendy/A. Hendy]

Secondary references:

26223 H. S. Ladd. 1966. Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands. United States Geological Survey Professional Paper 531:1-98 [A. Hendy/A. Hendy/J. Millet]
11409 H. S. Ladd. 1972. Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Turritellidae through Strombidae). United States Geological Survey Professional Paper 532:1-79 [A. Miller/A. Hendy/A. Hendy]