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
| 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}}
- Calandrites hindsiCockerell, 1916
- ?Calandrites ursorum
- ?Carabites arapahoensisCockerell, 1918
- Curculio beeklyi
- Ophryastites hendersoni
{{div col end}}
= Flora =
{{div col|colwidth=29em}}
- Allantodiopsis erosa
- Ampelopsis acerifolia
- Betula stevensoni
- Carya antiquorumBrown, 1962
- Cercidiphyllum arcticum
- Cissus marginata
- Eucommia serrata
- Fraxinus eocenica
- Glyptostrobus nordenskioldi
- Hydromystria expansa
- Lastrea goldiana
- Laurophyllum perseanum
- Laurus socialis
- Lygodium coloradense
- Metasequoia occidentalis
- Mimosites coloradensis
- Nordenskioldia borealis
- Persea brossiana
- Platanus nobilis
- P. raynoldsi
- Prunus corrugis
- Pterocarya hispida
- Quercus greenlandica
- Q. sullyi
- ?Robinia wardi
- Sassafras thermale
- Sparganium antiquum
{{div col end}}
Wasatchian correlations
class="wikitable" style="font-size: 60%"
|+ Wasatchian correlations in North America | ||||||||||||||||||||||
Formation | {{big|Wasatch}} | DeBeque | Claron | Indian Meadows | Pass Peak | Tatman | Willwood | Golden Valley | Coldwater | Allenby | Kamloops | Ootsa Lake | Margaret | Nanjemoy | Hatchetigbee | Tetas de Cabra | Hannold Hill | Coalmont | Cuchara | Galisteo | San Jose | Ypresian (IUCS) • Itaboraian (SALMA) Bumbanian (ALMA) • Mangaorapan (NZ) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basin | Powder River Uinta Piceance Colorado Plateau Wind River Green River Bighorn | Piceance | Colorado Plateau | Wind River | Green River | colspan=2 | Bighorn | Williston | Okanagan | Princeton | Buck Creek | Nechako | Sverdrup | Potomac | GoM | Laguna Salada | Rio Grande | North Park | Raton | Galisteo | San Juan | align=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}}}} | |||||||||||||||||
Copelemur | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 14px | |
Coryphodon | align=center | 14px | align=center | 14px | align=center | | align=center | 14px | align=center | | align=center | | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | 14px | align=center | | align=center | 14px | align=center | | align=center | | align=center | 14px | align=center | 14px | |
Diacodexis | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | 14px | align=center | | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | |
Homogalax | align=center | 14px | align=center | 14px | align=center | | align=center | 14px | align=center | | align=center | | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | |
Oxyaena | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | |
Paramys | align=center | 14px | align=center | 14px | align=center | | align=center | 14px | align=center | 14px | align=center | | align=center | 14px | align=center | 14px | align=center | | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | 14px | align=center | | align=center | | align=center | | align=center | 14px | |
Primates | align=center | 10px | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | 10px | align=center | 10px | |
Birds | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | |
Reptiles | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | 10px | |
Fish | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | | |
Insects | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | 10px | align=center | 10px | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | | align=center | | |
Flora | align=center | 10px | align=center | | align=center | | align=center | | align=center | | align=center | 10px | align=center | 10px | align=center | 10px | align=center | 10px | align=center | 10px | align=center | | align=center | | align=center | | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | 10px | align=center | | align=center | | align=center | | |
Environments | Alluvial-fluvio-lacustrine | Fluvial | Fluvial | Fluvio-lacustrine | Fluvial | colspan=2 | Lacustrine | colspan=2 | Fluvio-lacustrine | Deltaic-paludal | colspan=2 | Shallow marine | Fluvial | Shallow marine | Fluvial | colspan=2 | Fluvial | rowspan=2 align=left | {{left|8px Wasatchian volcanoclastics}} {{left|8px Wasatchian fauna}} {{left|8px Wasatchian flora}} | ||||||||
Volcanic | Yes | colspan=7 | No | Yes | No | Yes | No | Yes | colspan=6 | No | Yes | No |
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:Coal in the United States