Fajas Verdes I y II: Ypresian - Lutetian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Magnoliopsida
Rhoipites sp. Wodehouse 1933
Verrustephanoporites simplex Leidelmeyer 1966
Coniferales - Podocarpaceae
Podocarpidites cf. marwickii Couper 1953
(1 measurement)
Angiospermae - Myrtales - Onagraceae
Jussitriporites menendezii n. sp. Quattrocchio 1978
(1 measurement)
Angiospermae - Gunnerales
Tricolpites informal sp. A
(1 measurement)
Tricolpites lumbrerensis
Tricolpites (Psilatricolpites) lumbrerensis
Tricolpites vulgaris Pierce 1961
(1 measurement)
unclassified
Nothopollenites sp. Srivastava 1969
(1 measurement)
Angiospermae - Gunnerales
Tricolpites cf. reticulatus Couper 1953
Angiospermae - Saxifragales - Altingiaceae
Liquidambarpollenites cf. brandonensis
(1 measurement)
Lycopodiopsida - Lycopodiales
Retitriletes austroclavatidites Döring et al. 1963
unclassified
Smilacipites sp. Potonié 1960
(1 measurement)
Smilacipites saltensis
Equisetopsida - Cupressales
Inaperturopollenites informal sp. E
(1 measurement)
Inaperturopollenites sp. Potonié 1966
Polypodiopsida - Marsileaceae
Gabonisporis vigourouxii Boltenhagen 1967
(2 measurements)
Polypodiopsida - Osmundaceae
Baculatisporites sp. Thomson and Pflug 1953
Polypodiopsida - Polypodiaceae
Laevigatosporites informal sp. A
(1 measurement)
unclassified
Diporisporites sp. Elsik 1968
Diporisporites elongatus Quattrocchio 1978
Inapertisporites informal sp. A
(1 measurement)
Pluricellaesporites informal sp. A
(1 measurement)
Diporicellaesporites sp. Elsik 1968
(1 measurement)
see common names

Geography
Country:Argentina State/province:Salta County:Pampa Grande
Coordinates: 25.8° South, 65.2° West (view map)
Paleocoordinates:27.7° South, 52.6° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Paleogene Epoch: Eocene
Stage: Ypresian - Lutetian 10 m.y. bin: Cenozoic 2
Key time interval: Ypresian - Lutetian
Age range of interval: 56 - 41.2 m.y. ago
Stratigraphy
Geological group:Salta Formation:Lumbrera
Stratigraphy comments: Fernicola et al. 2021: new 238U-206Pb isochron age (46.2 Ma) obtained from samples taken on various independent points across paleosol and matrix positioned at the top of the lower section of the Lumbrera Formation. The new age is consistent with the hyperthermal scheme and constrains the deposition of the lower section of the Lumbrera Fm. between 55–46.2 Ma. Subsequently, the upper sections of the Lumbrera Formation are now constrained between 46 and 40 Ma (Lutetian) (see Fernicola et al. 2021: New assemblage of cingulates)
Lithology and environment
Primary lithology:red lithified marl
Lithology description: Lumbrera Formation consists of top to bottom: 8 m. Micaceous sandstone with color pink to white. 201 m. red marl, finely stratified. 22.56 m. GREEN BELT II. Claystones alternating dark blue to black, fetid and bituminous with remains of fish and insects, with green and black siltstones, sandstones and thin limestone bank (0.50m). 57 m. red marl with fine stratification fragmented. 9.42 m. GREEN BELT I: Alternating gray calcareous sandstones and purple and green sandstones with claystones and siltstones green and gray. 70 m. red marl. 10 m. reddish sandstone.
Environment:fluvial-lacustrine indet.
Geology comments: Lumbrera Formation begins with a general rejuvenation of the source areas, installing a markedly continental regime, developing a floodplain environment presenting a sequence of mudstones, marl and red sandstone, which was interrupted by the Green Belts, these belts would have accumulated a fluvio-lacustrine environment.
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection methods:chemical,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:136214
Authorizer:C. Jaramillo Enterer:J. Ceballos, J. Moreno
Modifier:G. Varnham Research group:paleobotany
Created:2012-11-23 01:51:22 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2015-11-23 01:51:22
Creative Commons license:CC0
Reference information

Primary reference:
43573. M. Quattrocchio. 1978. Contribución al conocimiento de la Palinología Estratigráfica de la Formación Lumbrera (Terciario Inferior, grupo Salta). Ameghiniana XV(3-4):285-300 [C. Jaramillo/J. Ceballos/J. Moreno]