Horlick Formation lithofacies 3: Early/Lower Devonian, Antarctica

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Phacopida - Homalonotidae
Burmeisteria (Digonus) antarcticus
original and current combination Digonus
Bivalvia - Nuculanida - Cucullellidae
Nuculites frigidus n. sp.
Rhynchonellata - Terebratulida - Meganterididae
Pleurothyrella antarctica
see common names

Geography
Country:Antarctica
Coordinates: 84.8° South, 115.0° West (view map)
Paleocoordinates:34.6° South, 175.6° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Devonian Epoch:Early/Lower Devonian
10 m.y. bin:Devonian 1-2
Key time interval:Early/Lower Devonian
Age range of interval:419.20000 - 393.30000 m.y. ago
Stratigraphy
Formation:Horlick
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: sandstone
Secondary lithology: "shale"
Lithology description: "Interbedded, ripple-laminated, fine-grained sandstones and shales, with thin cross-bedded layers of coarse sandstone containing fragmented shell material; poorly fossiliferous, but trace fossils are present in the finer laminae; grades up into Lithofacies 4"
Environment:marine indet.
Geology comments: The marine lithofacies 1-8 are interpreted as "shallow inner shelf to shoreline, where storms produced a changing pattern of coarse sand bars and finer troughs." Lithofacies3 interpreted as "inactive shoreface troughs"
Taphonomy
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Taxa are listed as Present, Abundant, Rare.
Metadata
Database number:35561
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2003-12-21 13:28:40 Last modified:2006-09-13 14:01:03
Access level:the public Released:2003-12-21 13:28:40
Creative Commons license:CC BY
Reference information

Primary reference:
9604. M. A. Bradshaw and L. McCartan. 1991. Palaeoecology and systematics of Early Devonian bivalves from the Horlick Formation, Ohio Range, Antarctica. Alcheringa 15(1):1-42 [M. Foote/M. Foote/P. Wagner]