Where: Falkland Islands, South Atlantic (51.4° S, 60.7° W: paleocoordinates 51.5° S, 57.3° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Middle Miocene to Middle Miocene (16.0 - 3.6 Ma)
• The preferred Middle? Miocene to Early Pliocene age limits are based on presence of the (now) mesotherm to typically megatherm genera Araucaria, Hedyosmum and Ovidia in a type of evergreen rainforest (podocarp-Nothofagus tall closed forest sensu Specht, 1970) that is now confined to relatively cool and uniformly wet climates in southern South America, New Zealand and Tasmania.
•Halle (1911: 210−211) subdivided the Forest Bed into two units (layers) based on texture and organic content: Layer C and Layer D.
Environment/lithology: mire or swamp; lithified, massive, yellow claystone
•The Forest Bed is sandwiched between Quaternary clays and the Palaeozoic bedrock at the rear of West Point Harbour. No equivalent deposit of densely packed tree remains in an organic mud matrix has been found anywhere else in the Falklands, suggesting that accumulation and long-term preservation of the deposit are the result of highly unusual circumstances. These almost certainly include topographic factors, for exam- ple the bay is encircled by steep hills, and the protection afforded to the wood-rich stratum by the overlying stony solifluction clays.
Size class: microfossils
Preservation: original sporopollenin
Collected in 1996 and 1997
Collection methods: chemical, hydroflouric,
• Samples collected in 1996 and 1907 represent Halle's Layers c and d, respectively.
•Slides from Halle's original collection are housed at the Swedish Museum of Natural History (Stockholm).
Primary reference: M. Macphail and D. J. Cantrill. 2006. Age and implications of the Forest Bed, Falkland Islands, southwest Atlantic Ocean: Evidence from fossil pollen and spores. Palaeogeography, Palaeoclimatology, Palaeoecology (240)602-629 [C. Jaramillo/C. Jaramillo]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 169355: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 20.05.2015
Creative Commons license: CC BY (attribution)