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Umatac Formation, Guam, USA

Lat/Long (Decimal)	13.3333,144.683
Co-ordinates Derivation	estimated from map
Mindat.org Region (for given coordinates)	Guam, USA

Collections

Collection	Reference	Stratigraphic Name	Lithology	Age
Alifan Limestone, Loc. Eh 3-3	Johnson H. (1964)	Alifan Limestone	"limestone"	11.608 - 5.333 Ma Miocene
Alifan Limestone, Loc. Eh 3-8	Johnson H. (1964)	Alifan Limestone	"limestone"	11.608 - 5.333 Ma Miocene
Bonya Limestone, Loc. Fi 3-2, D895	Johnson H. (1964)	Bonya Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Bonya Limestone, Loc. Fi 3-4	Johnson H. (1964)	Bonya Limestone	"limestone"	23.03 - 5.333 Ma Miocene
Bonya Limestone, Loc. Ih 14-1, D930	Johnson H. (1964)	Bonya Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Bonya Limestone, Loc. Ih 14-2, D931	Johnson H. (1964)	Bonya Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Fi 6-1	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Fi 6-4	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-13	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-16	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-17	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-18	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-2	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-25, D919	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-26, D920	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-27, D921	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-28, D922	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-31	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-32	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-33	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-34, D925	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-36, D926	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-37, D927	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-38, D928	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-4	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-8, D918	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene
Umatac Formation, Loc. Ii 6-9	Johnson H. (1964)	Umatac - Maemong Limestone	"limestone"	23.03 - 15.97 Ma Miocene

Recorded Fossils

Accepted Name	Hierarchy	Age
Amphiroa sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : *Amphiroa*	11.608 - 5.333 Ma Miocene
Corallina sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : *Corallina*	23.03 - 15.97 Ma Miocene
Dermatolithon sp. genus	Plantae : Rhodophyta : Rhodophyceae : Corallinales : Corallinaceae : *Dermatolithon*	23.03 - 15.97 Ma Miocene
Goniolithon sp. genus	Plantae : Rhodophyta : Rhodophyceae : Corallinales : Corallinaceae : *Goniolithon*	23.03 - 15.97 Ma Miocene
Jania vetus species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Jania : *Jania vetus*	23.03 - 15.97 Ma Miocene
Lithophyllum sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : *Lithophyllum*	23.03 - 15.97 Ma Miocene
Lithophyllum bonyense species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Lithophyllum : *Lithophyllum bonyense*	23.03 - 15.97 Ma Miocene
Lithophyllum maemongense species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Lithophyllum : *Lithophyllum maemongense*	23.03 - 15.97 Ma Miocene
Lithophyllum prelichenoides species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Lithophyllum : *Lithophyllum prelichenoides*	23.03 - 15.97 Ma Miocene
Lithophyllum quadrangulum species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Lithophyllum : *Lithophyllum quadrangulum*	23.03 - 15.97 Ma Miocene
Lithoporella melobesioides species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Lithoporella : *Lithoporella melobesioides*	23.03 - 15.97 Ma Miocene
Melobesia sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Hapalidiaceae : *Melobesia*	23.03 - 15.97 Ma Miocene
Aethesolithon sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : *Aethesolithon*	11.608 - 5.333 Ma Miocene
Aethesolithon problematicum species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Aethesolithon : *Aethesolithon problematicum*	23.03 - 5.333 Ma Miocene
Calliarthron antiquum species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Corallinaceae : Calliarthron : *Calliarthron antiquum*	23.03 - 15.97 Ma Miocene
Lithothamnion sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Hapalidiaceae : *Lithothamnion*	23.03 - 15.97 Ma Miocene
Lithothamnium bourcarti species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Hapalidiaceae : Lithothamnion : *Lithothamnium bourcarti*	23.03 - 15.97 Ma Miocene
Mesophyllum sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Hapalidiaceae : *Mesophyllum*	23.03 - 15.97 Ma Miocene
Mesophyllum commune species	Plantae : Rhodophyta : Florideophyceae : Corallinales : Hapalidiaceae : Mesophyllum : *Mesophyllum commune*	23.03 - 15.97 Ma Miocene
Archaeolithothamnium sp. genus	Plantae : Rhodophyta : Florideophyceae : Corallinales : Sporolithaceae : *Archaeolithothamnion*	23.03 - 15.97 Ma Miocene

References

Johnson H. (1964) Fossil and recent calcareous algae from Guam, Geological survey professional paper 403-G

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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