E-1 (2000-2100 ft), Eniwetok Atol: Early Miocene, Marshall Islands
collected by ONR and USGS 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Scleractinia - Poritidae
Porites sp. Link 1807
Gastropoda - Skeneidae
Ladd 1966
Bivalvia - Cardiida - Cardiidae
Cardium sp. Linnaeus 1758
Tubothalamea - Miliolida - Austrotrillinidae
see common names

Geography
Country:Marshall Islands
Coordinates: 11.4° North, 162.4° East (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 5
Key time interval: Early Miocene
Age range of interval: 23.04 - 15.98 m.y. ago
Stratigraphy
Local section:E-1 Local bed:2050 ft
Local order:top to bottom
Regional section:Eniwetok Atol Regional bed:2050 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Early Miocene, on the basis of foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: A composite list from several beds within this section of drill core, from 2000-2100 ft.
Lithology and environment
Primary lithology:shelly/skeletal,gray poorly lithified "limestone"
Includes fossils?Y
Lithology description: LITHOLOGY: Limestone, gray, weakly cemented rich in pelecypod shells. LITHIFICATION: Poorly-llithified, on the basis of figured specimens.
Environment:reef, buildup or bioherm
Geology comments: ENVIRONMENT: Carbonate facies. Shallow water. Porites in growth position. No paleoenvironmenttal data presented.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:core,field collection
Reason for describing collection:taxonomic analysis
Collectors:ONR and USGS Collection dates:1952
Collection method comments: COLLECTOR: Office of Naval Research and USGS, 1952. REPOSITORY: USNM.
Taxonomic list comments:COVERAGE: 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:43316
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-08-11 14:49:58 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2005-08-11 14:49:58
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]