Sobral Formation: Difference between revisions

Sobral Formation
Sobral Formation
Stratigraphic range: Danian; ~66–61.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Marambio Group
Underlies	Cross Valley & La Meseta Formations
Overlies	Lopez de Bertodano Formation
Thickness	250 m (820 ft)
Lithology
Primary	Siltstone, mudstone
Other	Concretion, sandstone
Location
Coordinates	64°18′S 56°42′W / 64.3°S 56.7°W
Approximate paleocoordinates	63°12′S 66°36′W / 63.2°S 66.6°W
Region	Seymour Island, James Ross Island group
Country	Antarctica
	; Geologic map of Seymour Island, Antarctica with the Sobral Formation in brown

Browse history interactively

← Previous edit Next edit →

Content deleted Content added

VisualWikitext

Inline

Revision as of 18:22, 13 July 2019

The Sobral Formation is a palaeontological formation located in Antarctica. It dates to the Danian stage of the Lower Paleocene period.^[1]

Spectacular fossils documenting marine and terrestrial ecosystems soon after the (non-avian) dinosaurs became extinct at the Cretaceous-Paleogene boundary are found in this formation.^[2] One of the most significant sites is on Seymour Island.

References

^ Bowman, V.; Ineson, J.; Riding, J.; Crame, J.; Francis, J.; Condon, D.; Whittle, R.; Ferraccioli, F. (2016). "The Paleocene of Antarctica: Dinoflagellate cyst biostratigraphy, chronostratigraphy and implications for the palaeo-Pacific margin of Gondwana". Gondwana Research. 38: 132–148. doi:10.1016/j.gr.2015.10.018.
^ Crame, J.A.; Beu, A.G.; Ineson J.R.; Francis J.A.; Whittle R.J.; Bowman V.C. (2014). "The Early Origin of the Antarctic Marine Fauna and Its Evolutionary Implications". PLOS ONE. 7 (12): e114743. doi:10.1371/journal.pone.0114743.{{cite journal}}: CS1 maint: unflagged free DOI (link)

M. A. Baldoni and V. D. Barreda. 1986. Estudio palinológico de las formaciones López de Bertodano y Sobral, Isla Vicecomodoro Marambio, Antártida. Boletín del IG-USP, Serie Científica (17)89-98
H. F. Filkorn. 1994. Fossil scleractinian corals from James Ross Basin, Antarctica. Antarctic Research Series 65:1-96
I. Poole, A. M. W. Mennega, and D. J. Cantrill. 2003. Valdivian ecosystems in the Late Cretaceous and Early Tertiary of Antarctica: further evidence from myrtaceous and eucryphiaceous fossil wood. Review of Palaeobotany and Palynology 124:9-27

[Bowman-1] Bowman, V.; Ineson, J.; Riding, J.; Crame, J.; Francis, J.; Condon, D.; Whittle, R.; Ferraccioli, F. (2016). "The Paleocene of Antarctica: Dinoflagellate cyst biostratigraphy, chronostratigraphy and implications for the palaeo-Pacific margin of Gondwana". Gondwana Research. 38: 132–148. doi:10.1016/j.gr.2015.10.018.

[Crame-2] Crame, J.A.; Beu, A.G.; Ineson J.R.; Francis J.A.; Whittle R.J.; Bowman V.C. (2014). "The Early Origin of the Antarctic Marine Fauna and Its Evolutionary Implications". PLOS ONE. 7 (12): e114743. doi:10.1371/journal.pone.0114743.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[1]

[2]

@@ Line 25: / Line 25: @@
 | map_caption = Geologic map of Seymour Island, Antarctica with the Sobral Formation in brown
 }}
-The '''Sobral Formation''' is a [[paleontology|palaeontological]] formation located in [[Antarctica]]. It dates to the [[Danian]] stage of the Lower [[Paleocene]] period.<ref name="Bowman">{{cite journal |author1=Bowman, V. |title=The Paleocene of Antarctica: Dinoflagellate cyst biostratigraphy, chronostratigraphy and implications for the palaeo-Pacific margin of Gondwana |year=2016 |journal=Gondwana Research |volume=38 |url=http://www.sciencedirect.com/science/article/pii/S1342937X15002828 |doi=10.1016/j.gr.2015.10.018 |author2=Ineson, J. |author3=Riding, J. |author4=Crame, J. |author5=Francis, J. |author6=Condon, D. |author7=Whittle, R. |author8=Ferraccioli, F.}}</ref>
+The '''Sobral Formation''' is a [[paleontology|palaeontological]] formation located in [[Antarctica]]. It dates to the [[Danian]] stage of the Lower [[Paleocene]] period.<ref name="Bowman">{{cite journal |author1=Bowman, V. |title=The Paleocene of Antarctica: Dinoflagellate cyst biostratigraphy, chronostratigraphy and implications for the palaeo-Pacific margin of Gondwana |year=2016 |journal=Gondwana Research |volume=38 |pages=132–148 |doi=10.1016/j.gr.2015.10.018 |author2=Ineson, J. |author3=Riding, J. |author4=Crame, J. |author5=Francis, J. |author6=Condon, D. |author7=Whittle, R. |author8=Ferraccioli, F.}}</ref>
-Spectacular [[fossil]]s documenting marine and terrestrial ecosystems soon after the (non-[[bird|avian]]) [[dinosaur]]s became [[extinct]] at the [[Cretaceous-Paleogene boundary]] are found in this formation.<ref name="Crame">{{cite journal |author1=Crame, J.A. |title=The Early Origin of the Antarctic Marine Fauna and Its Evolutionary Implications |year=2014 |journal=PLOS ONE |volume=7 |url=http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0114743 |doi=10.1371/journal.pone.0114743 |author2=Beu, A.G. |author3=Ineson J.R. |author4=Francis J.A. |author5=Whittle R.J. |author6=Bowman V.C.}}</ref> One of the most significant sites is on [[Seymour Island]].
+Spectacular [[fossil]]s documenting marine and terrestrial ecosystems soon after the (non-[[bird|avian]]) [[dinosaur]]s became [[extinct]] at the [[Cretaceous-Paleogene boundary]] are found in this formation.<ref name="Crame">{{cite journal |author1=Crame, J.A. |title=The Early Origin of the Antarctic Marine Fauna and Its Evolutionary Implications |year=2014 |journal=PLOS ONE |volume=7 |issue=12 |pages=e114743 |doi=10.1371/journal.pone.0114743 |author2=Beu, A.G. |author3=Ineson J.R. |author4=Francis J.A. |author5=Whittle R.J. |author6=Bowman V.C.}}</ref> One of the most significant sites is on [[Seymour Island]].
 == See also ==

Revision as of 18:22, 13 July 2019

See also

References

Further reading