Coalmont Formation

{{Short description|Geologic formation in Colorado, US}}

{{Infobox rockunit

| name = Coalmont Formation

| image = North Park Phacelia Habitat (5716435022).jpg

| caption = Coalmont Formation, Jackson County, Colorado

| type = Formation

| age = Paleocene-Wasatchian
~{{fossil range|60|50}}

| period = Ypresian

| prilithology = Sandstone

| otherlithology = Clay, Shale, Coal

| namedfor = Coalmont, Jackson County, ColoradoBeekly, A.L., 1915. Geology and coal resources of North Park, Colorado. U.S. Geological Survey Bulletin, 596, 121 p

| namedby = A. L. Beekly

| region = Colorado

| country = {{USA}}

| coordinates = {{coord|40.4|N|106.5|W|display=inline,title}}

| paleocoordinates = {{coord|45.0|N|90.3|W|display=inline}}

| unitof =

| subunits =

| underlies = North Park Formation

| overlies = Cretaceous strataHail, W.J. and Leopold, E.B., 1960. Paleocene and Eocene age of the Coalmont Formation, North Park, Colorado. Geological Survey Professional Paper, 400-B, pp.B260-B261.

| thickness = {{convert|9000|ft|m|sp=us}}

| extent = North Park intermountain basin

| area =

| map = {{Location map+ | United States#Colorado

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | United States#Colorado

| lat_deg = 40.4

| lon_deg = -106.5

| mark = Orange pog.svg

| marksize = 10

}}

}}

| map_caption =

}}

The Coalmont Formation (Tmc) is a geologic formation that outcrops in the North Park intermountain basin in Colorado. It contains fossil plants and coal layers dating back to the Paleogene period.[https://paleobiodb.org/classic/displayStrata?geological_group=&formation=Coalmont&group_formation_member=Coalmont Coalmont Formation] at Fossilworks.org

Fossil content

File:USGS North Park Basin geologic map.png

The following fossils have been reported from the formation:

= Insects =

{{div col|colwidth=29em}}

{{div col end}}

= Flora =

Wasatchian correlations

class="wikitable" style="font-size: 60%"

|+ Wasatchian correlations in North America

Formation{{big|Wasatch}}DeBequeClaronIndian MeadowsPass PeakTatmanWillwoodGolden ValleyColdwaterAllenbyKamloopsOotsa LakeMargaretNanjemoyHatchetigbeeTetas de CabraHannold HillCoalmontCucharaGalisteoSan JoseYpresian (IUCS) • Itaboraian (SALMA)
Bumbanian (ALMA) • Mangaorapan (NZ)
BasinPowder River
Uinta
Piceance
Colorado Plateau
Wind River
Green River
Bighorn
Piceance




Colorado Plateau





Wind River





Green River
colspan=2 |





Bighorn
WillistonOkanaganPrincetonBuck CreekNechakoSverdrupPotomacGoMLaguna SaladaRio GrandeNorth ParkRatonGalisteoSan Juanalign=center rowspan=14 | {{Location map+ | North America

| relief = 1

| width = 220

| float = center

| places =

{{Location map~ | North America

| lat_deg = 50.1

| lon_deg = -120.5

| mark = Pink ff0080 pog.svg

| marksize = 10

| link = Coldwater Beds

}}

{{Location map~ | North America

| lat_deg = 78.7

| lon_deg = -81.9

| mark = Pink ff0080 pog.svg

| marksize = 10

| link = Margaret Formation

}}

{{Location map~ | North America

| lat_deg = 50.8

| lon_deg = -121.1

| mark = Pink ff0080 pog.svg

| marksize = 10

| link = Kamloops Group

}}

{{Location map~ | North America

| lat_deg = 35.4

| lon_deg = -106.0

| mark = Pink ff0080 pog.svg

| marksize = 10

| link = Galisteo Formation

}}

{{Location map~ | North America

| lat_deg = 44.2

| lon_deg = -108.6

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Tatman Formation

}}

{{Location map~ | North America

| lat_deg = 44.5

| lon_deg = -108.0

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Willwood Formation

}}

{{Location map~ | North America

| lat_deg = 48.5

| lon_deg = -102.7

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Golden Valley Formation

}}

{{Location map~ | North America

| lat_deg = 38.8

| lon_deg = -76.7

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Nanjemoy Formation

}}

{{Location map~ | North America

| lat_deg = 28.7

| lon_deg = -114.1

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Las Tetas de Cabra Formation

}}

{{Location map~ | North America

| lat_deg = 40.4

| lon_deg = -106.5

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Coalmont Formation

}}

{{Location map~ | North America

| lat_deg = 49.376667

| lon_deg = -120.546667

| mark = Dark Green 004040 pog.svg

| marksize = 10

| link = Allenby Formation

}}

{{Location map~ | North America

| lat_deg = 40.0

| lon_deg = -107.9

| mark = Orange pog.svg

| marksize = 10

| link = DeBeque Formation

}}

{{Location map~ | North America

| lat_deg = 37.8

| lon_deg = -112.0

| mark = Orange pog.svg

| marksize = 10

| link = Claron Formation

}}

{{Location map~ | North America

| lat_deg = 43.2

| lon_deg = -108.2

| mark = Orange pog.svg

| marksize = 10

| link = Indian Meadows Formation

}}

{{Location map~ | North America

| lat_deg = 42.7

| lon_deg = -110.1

| mark = Orange pog.svg

| marksize = 10

| link = Pass Peak Formation

}}

{{Location map~ | North America

| lat_deg = 31.3

| lon_deg = -86.1

| mark = Orange pog.svg

| marksize = 10

| link = Hatchetigbee Bluff Formation

}}

{{Location map~ | North America

| lat_deg = 29.4

| lon_deg = -103.1

| mark = Orange pog.svg

| marksize = 10

| link = Hannold Hill Formation

}}

{{Location map~ | North America

| lat_deg = 37.8

| lon_deg = -105.1

| mark = Orange pog.svg

| marksize = 10

| link = Cuchara Formation

}}

{{Location map~ | North America

| lat_deg = 36.5

| lon_deg = -107.1

| mark = Orange pog.svg

| marksize = 10

| link = San Jose Formation

}}

{{Location map~ | North America

| lat_deg = 54.8

| lon_deg = -127.0

| mark = Orange pog.svg

| marksize = 10

| link = Ootsa Lake Group

}}

{{Location map~ | North America

| lat_deg = 41.9

| lon_deg = -111.0

| mark = Pink ff0080 pog.svg

| marksize = 12

| link = Wasatch Formation

}}

}}

{{small|Country}}colspan=8 | {{small|{{USA}}}}colspan=5 | {{small|{{CAN}}}}colspan=2 | {{small|{{USA}}}}{{small|{{MEX}}}}colspan=5 | {{small|{{USA}}}}
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Homogalaxalign=center | 14pxalign=center | 14pxalign=center |align=center | 14pxalign=center |align=center |align=center | 14pxalign=center | 14pxalign=center |align=center |align=center |align=center |align=center |align=center | 14pxalign=center |align=center |align=center |align=center |align=center |align=center | 14pxalign=center |
Oxyaenaalign=center | 14pxalign=center | 14pxalign=center |align=center |align=center |align=center |align=center | 14pxalign=center |align=center |align=center |align=center |align=center |align=center |align=center |align=center |align=center | 14pxalign=center |align=center |align=center |align=center |align=center | 14px
Paramysalign=center | 14pxalign=center | 14pxalign=center |align=center | 14pxalign=center | 14pxalign=center |align=center | 14pxalign=center | 14pxalign=center |align=center |align=center |align=center |align=center | 14pxalign=center |align=center |align=center |align=center | 14pxalign=center |align=center |align=center |align=center | 14px
Primatesalign=center | 10pxalign=center |align=center |align=center | 10pxalign=center |align=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center |align=center | 10pxalign=center |align=center |align=center |align=center | 10pxalign=center |align=center |align=center | 10pxalign=center | 10px
Birdsalign=center | 10pxalign=center |align=center |align=center |align=center |align=center |align=center |align=center |align=center | 10pxalign=center | 10pxalign=center |align=center |align=center | 10pxalign=center | 10pxalign=center |align=center |align=center |align=center |align=center |align=center |align=center |
Reptilesalign=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center | 10pxalign=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center | 10px
Fishalign=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center | 10pxalign=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center |align=center |align=center |
Insectsalign=center |align=center |align=center |align=center |align=center |align=center |align=center |align=center | 10pxalign=center | 10pxalign=center | 10pxalign=center | 10pxalign=center | 10pxalign=center |align=center |align=center |align=center |align=center |align=center | 10pxalign=center |align=center |align=center |
Floraalign=center | 10pxalign=center |align=center |align=center |align=center |align=center | 10pxalign=center | 10pxalign=center | 10pxalign=center | 10pxalign=center | 10pxalign=center |align=center |align=center |align=center | 10pxalign=center |align=center | 10pxalign=center |align=center | 10pxalign=center |align=center |align=center |
EnvironmentsAlluvial-fluvio-lacustrineFluvialFluvialFluvio-lacustrineFluvialcolspan=2 | Lacustrinecolspan=2 | Fluvio-lacustrineDeltaic-paludalcolspan=2 | Shallow marineFluvialShallow marineFluvialcolspan=2 | Fluvialrowspan=2 align=left | {{left|8px Wasatchian volcanoclastics}}
{{left|8px Wasatchian fauna}}
{{left|8px Wasatchian flora}}
VolcanicYescolspan=7 | NoYesNoYesNoYescolspan=6 | NoYesNo

See also

References

{{reflist|2}}

= Bibliography =

  • {{citation |last=Brown |first=R. W |year=1962 |title=Paleocene flora of the Rocky Mountains and Great Plains |journal=United States Geological Survey Professional Paper |volume=375 |pages=1–119}}
  • {{citation |last=Cockerell |first=T. D. A |year=1918 |title=New species of North American fossil beetles, cockroaches, and tsetse flies |journal=Proceedings of the United States National Museum |volume=54 |issue=2237 |pages=301–311|doi=10.5479/si.00963801.54-2237.301 |url=https://www.biodiversitylibrary.org/part/52652 }}
  • {{citation |last=Cockerell |first=T. D. A |year=1916 |title=Some American fossil insects |journal=Proceedings of the United States National Museum |volume=51 |issue=2146 |pages=89–106|doi=10.5479/si.00963801.51-2146.89 |url=https://www.biodiversitylibrary.org/part/1661 }}

Category:Geologic formations of Colorado

Category:Eocene Series of North America

Category:Paleocene Series of North America

Category:Paleogene Colorado

Category:Ypresian Stage

Category:Thanetian Stage

Category:Wasatchian

Category:Coal formations

Category:Coal in the United States

Category:Sandstone formations of the United States

Category:Fluvial deposits

Category:Paleontology in Colorado