Jump to content

Feltville Formation: Difference between revisions

Edit links
From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
m Update portal box using AWB
Added sections for Description, Age, Depositional Environment, and Economic Uses
Line 1: Line 1:
{{Infobox rockunit
{{Infobox Rockunit
| name = Feltville Formation
| name = Feltville Formation
| period = Lower Jurassic
| image =
| image = 2ndWatchungMountain_FeltvilleFormation.jpg
| caption =
| type = [[Geological formation]]
| type = [[Geological formation]]
| prilithology = [[Sandstone]], [[Siltstone]], [[Mudstone]]
| age =
⚫
| otherlithology = [[Limestone]]
| prilithology =
| namedfor = [[Deserted Village|Deserted Village of Feltville, New Jersey]]<ref name="Olsen">Olsen, P.E., 1980. The Latest Triassic and Early Jurassic Formations of the Newark Basin (Eastern North America, Newark Supergroup): Stratigraphy, Structure, and Correlation. ''New Jersey Academy of Science Bulletin'', v. 25, no. 2, p. 25-51.</ref>
⚫
| otherlithology =
| namedby = [[Paul E. Olsen]], 1980<ref name=Olsen/>
| namedfor =
| region = [[Newark Basin]] of<br> [[Eastern North America Rift Basins]]
| namedby =
| caption = Exposure of Feltville Formation sandstone beneath a ledge of Preakness Basalt on [[Preakness Range|Preakness Mountain]] in New Jersey.
| region =
| unitof = [[Newark Supergroup]]
| country =
⚫
| underlies = [[Preakness Basalt]]
| coordinates =
| overlies = [[Orange Mountain Basalt]]
| unitof =
| thickness = maximum of {{convert|1,968|ft|m|-1}}<ref name=Olsen/>
| subunits =
| extent = continuous for ~{{convert|40|mi|km}} in [[New Jersey]], <br>with [[Watchung Outliers|outliers]] present in <br>New Jersey & [[Pennsylvania]].
⚫
| underlies =
| overlies =
| thickness =
| extent =
| area =
| map =
| map_caption =
}}
}}


'''The Feltville Formation''' is a mapped bedrock unit primarily in [[New Jersey]], with one known [[Watchung Outliers#Jacksonwald Basalt|outlier]] in [[Pennsylvania]]. It is named for the [[Deserted Village|Deserted Village of Feltville]] in [[Watchung Reservation]], New Jersey, which is near where its type section was described by paleontologist [[Paul E. Olsen]].<ref name=Olsen/>
The '''Feltville Formation''' is a [[Mesozoic]] geologic [[Formation (geology)|formation]]. Indeterminate fossil [[ornithischian]] tracks have been reported from the formation.<ref name="dinosaurdistribution">Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.</ref>

==Description==
The Feltville Formation is composed of red, gray, and white sandstone of varying grain thickness, as well as red, gray, and black siltstone and calcareous mudstone. Sandstone/siltstone layers tend to be alternatingly massive and cross-bedded. Black to white carbonaceous limestone layers exist near the base of the formation.<ref name=Olsen/><ref name="USGS Feltville">[http://tin.er.usgs.gov/geology/state/sgmc-unit.php?unit=NJJf%3B5 Mineral Resources Online Spatial Data – Feltville Formation, New Jersey]. U.S. Geological Survey. Accessed July 23, 2010.</ref> Additionally, pebbles and cobbles of quartz are embedded within layers of sandstone and siltstone that interfinger with the Feltville Formation near [[Oakland, New Jersey]].<ref name="USGS Feltville"/>

===Depositional Environment===
The Feltville Formation can be characterized as a continuation of the [[Passaic Formation]], which is mostly [[playa]] and [[alluvial fan]] deposits resulting from the rifting of [[Pangea]]. The primarily red color of this formation is often evidence that the sediments were deposited in arid conditions.<ref name="multiple">Faill, R.T., (2004). The Birdsboro Basin. ''Pennsylvania Geology'' V. 34 n. 4.</ref> However, the Feltville Formation differs from the Passaic Formation in that it contains a more significant portion of non-red layers, which were laid down by deep lakes present during wetter periods.<ref name="Rutgers Newark Basin Geology">Schlische, Roy W. [http://geology.rutgers.edu/103web/Newarkbasin/NB_text.html Geology of the Newark Rift Basin]. Department of Geological Sciences, Rutgers University, Piscataway, NJ. Accessed July 23, 2010.</ref>
===Fossils===
Fish fossils, commonly those of the ray-finned [[Semionotus|''Semiontus'']], can be found in limestone layers within the formation.<ref name=Olsen/> In other layers, indeterminate fossil [[ornithischian]] tracks have been noted <ref name="dinosaurdistribution">Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.</ref>, along with additional reptile and dinosaur prints. Fossil plant remains, as well as root structures and pollen, are also found in the formation.<ref name=Olsen/>

==Age==
The Feltville Formation rests conformably above the [[Orange Mountain Basalt]] and below the [[Preakness Basalt]], placing its age somewhere between approximately 199 and 196 million years ago during the early Jurassic stage known as the [[Hettangian]].

==Economic Uses==
The Feltville Formation was once mined for [[freestone (masonry)|freestone]], as indicated by a historical work detailing quarrying operations at the base of [[Preakness Range|Preakness Mountain]] in New Jersey.<ref name="1834 Description">Gordon, Thomas Francis. A Gazetteer of the State of New Jersey – Comprehending a General View of its Physical and Moral Condition, together with a Topographical and Statistical Account of its Counties, Towns, Villages, Canals, Railroads, &c. Published by D. Fenton, 1834. [http://books.google.com/books?id=BnIFAAAAQAAJ&pg=RA1-PA8 Available via Google Books]</ref>


==See also==
==See also==
*[[Geology of New Jersey]]
*[[Geology of Pennsylvania]]
* [[List of dinosaur-bearing rock formations]]
* [[List of dinosaur-bearing rock formations]]
** [[List of stratigraphic units with ornithischian tracks]]
** [[List of stratigraphic units with ornithischian tracks]]
*** [[List_of_stratigraphic_units_with_ornithischian_tracks#Indeterminate_or_unspecified_ornithischian_tracks|Indeterminate ornithischian tracks]]
*** [[List_of_stratigraphic_units_with_ornithischian_tracks#Indeterminate_or_unspecified_ornithischian_tracks|Indeterminate ornithischian tracks]]


==Footnotes==
==References==
'''In-line citations'''
⚫
{{Portal box|Earth sciences|Paleontology|Dinosaurs||}}
{{Reflist}}
{{Reflist}}
'''Additional references'''
⚫
#Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.&nbsp;ISBN 0-520-24209-2.


[[Category:Jurassic geologic formations]]
==References==
[[Category:Geology of New Jersey]]
⚫
* Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.&nbsp;ISBN 0-520-24209-2.
[[Category:Geology of Pennsylvania]]

[[Category:Mesozoic geologic formations]]
[[Category:Sandstone]]
[[Category:Siltstone]]
[[Category:Mudstone]]


{{Geology of the Newark Basin}}
⚫
{{Portal box|Earth sciences|Paleontology|Dinosaurs||}}


{{geologic-formation-stub}}
{{geologic-formation-stub}}

Revision as of 23:17, 23 July 2010

Feltville Formation

Stratigraphic range: Lower Jurassic
Exposure of Feltville Formation sandstone beneath a ledge of Preakness Basalt on Preakness Mountain in New Jersey.
TypeGeological formation
Unit ofNewark Supergroup
UnderliesPreakness Basalt
OverliesOrange Mountain Basalt
Thicknessmaximum of 1,968 feet (600 m)[1]
Lithology
PrimarySandstone, Siltstone, Mudstone
OtherLimestone
Location
RegionNewark Basin of
Eastern North America Rift Basins
Extentcontinuous for ~40 miles (64 km) in New Jersey,
with outliers present in
New Jersey & Pennsylvania.
Type section
Named forDeserted Village of Feltville, New Jersey[1]
Named byPaul E. Olsen, 1980[1]

The Feltville Formation is a mapped bedrock unit primarily in New Jersey, with one known outlier in Pennsylvania. It is named for the Deserted Village of Feltville in Watchung Reservation, New Jersey, which is near where its type section was described by paleontologist Paul E. Olsen.[1]

Description

The Feltville Formation is composed of red, gray, and white sandstone of varying grain thickness, as well as red, gray, and black siltstone and calcareous mudstone. Sandstone/siltstone layers tend to be alternatingly massive and cross-bedded. Black to white carbonaceous limestone layers exist near the base of the formation.[1][2] Additionally, pebbles and cobbles of quartz are embedded within layers of sandstone and siltstone that interfinger with the Feltville Formation near Oakland, New Jersey.[2]

Depositional Environment

The Feltville Formation can be characterized as a continuation of the Passaic Formation, which is mostly playa and alluvial fan deposits resulting from the rifting of Pangea. The primarily red color of this formation is often evidence that the sediments were deposited in arid conditions.[3] However, the Feltville Formation differs from the Passaic Formation in that it contains a more significant portion of non-red layers, which were laid down by deep lakes present during wetter periods.[4]

Fossils

Fish fossils, commonly those of the ray-finned Semiontus, can be found in limestone layers within the formation.[1] In other layers, indeterminate fossil ornithischian tracks have been noted [5], along with additional reptile and dinosaur prints. Fossil plant remains, as well as root structures and pollen, are also found in the formation.[1]

Age

The Feltville Formation rests conformably above the Orange Mountain Basalt and below the Preakness Basalt, placing its age somewhere between approximately 199 and 196 million years ago during the early Jurassic stage known as the Hettangian.

Economic Uses

The Feltville Formation was once mined for freestone, as indicated by a historical work detailing quarrying operations at the base of Preakness Mountain in New Jersey.[6]

See also

References

In-line citations

  1. ^ a b c d e f g Olsen, P.E., 1980. The Latest Triassic and Early Jurassic Formations of the Newark Basin (Eastern North America, Newark Supergroup): Stratigraphy, Structure, and Correlation. New Jersey Academy of Science Bulletin, v. 25, no. 2, p. 25-51.
  2. ^ a b Mineral Resources Online Spatial Data – Feltville Formation, New Jersey. U.S. Geological Survey. Accessed July 23, 2010.
  3. ^ Faill, R.T., (2004). The Birdsboro Basin. Pennsylvania Geology V. 34 n. 4.
  4. ^ Schlische, Roy W. Geology of the Newark Rift Basin. Department of Geological Sciences, Rutgers University, Piscataway, NJ. Accessed July 23, 2010.
  5. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  6. ^ Gordon, Thomas Francis. A Gazetteer of the State of New Jersey – Comprehending a General View of its Physical and Moral Condition, together with a Topographical and Statistical Account of its Counties, Towns, Villages, Canals, Railroads, &c. Published by D. Fenton, 1834. Available via Google Books

Additional references

  1. Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
Stub icon

This article about a specific stratigraphic formation is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=Feltville_Formation&oldid=375119368"