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Shiprock diatreme, Shiprock, San Juan Co., New Mexico, USAi
Regional Level Types
Shiprock diatreme- not defined -
Shiprock- not defined -
San Juan Co.County
New MexicoState
USACountry

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Latitude & Longitude (WGS84):
36° 41' 17'' North , 108° 50' 11'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Shiprock8,295 (2011)17.1km
Beclabito317 (2011)23.6km
Sanostee371 (2011)29.5km
Waterflow1,670 (2011)32.6km
Teec Nos Pos730 (2011)34.1km
Other/historical names associated with this locality:
Tsé Bitʼaʼí


Shiprock, located approx. 12 miles southwest of the town of Shiprock, New Mexico, is what is known as a diatreme made up of the rock type minette, fractured volcanic breccia, and mafic dykes. The formation is the erosional remnant of the throat of a maar-diatreme volcano. Shiprock rises approx. 1,580 feet above the high desert plains that surround it; however, the exposed rock seen today was originally formed 2,500 to 3,000 feet below the surface and exposed after several million years of erosion. Radiometric dating on Shiprock has provided a solidification age of the rock at approx. 27 million years ago. It is one of the oldest features of the Navajo Volcanic Field where several other prominent diatremes and minette flows dot the area.

It should also be pointed out that Shiprock is located on the Navajo Nation, and access is strictly forbidden as the Navajo People consider Shiprock a religious and sacred monument and therefore, do not like it when non-Navajo Peoples are caught driving around the base or attempting to rockclimb Shiprock.

A monadnock rising nearly 1,583 feet (482.5 meters) above the high-desert plain of the Navajo Nation in San Juan County, New Mexico, United States. Its peak elevation is 7,177 feet (2,187.5 m) above sea level. It lies about 10.75 miles (17.30 km) southwest of the town of Shiprock, which is named for the peak.

(It) is composed of fractured volcanic breccia and black dikes of igneous rock called minette. It is the erosional remnant of the throat of a volcano, and the volcanic breccia formed in a diatreme. The rock probably was originally formed 2,500–3,000 feet (750–1,000 meters) below the Earth's surface, but it was exposed after millions of years of erosion. Wall-like sheets of minette, known as dikes, radiate away from the central formation. Radiometric age determinations of the minette establish that these volcanic rocks solidified about 27 million years ago. Shiprock is in the northeastern part of the Navajo Volcanic Field — a field that includes intrusions and flows of minette and other unusual igneous rocks that formed about 25 million years ago.

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range
Colorado Plateau, USAPlateau
Navajo Nation Indian Reservation, USAReservation
Hopi-Navajo Indian Reservations, Colorado Plateau, Apache; Navajo and San Juan Cos., Arizona & Utah, USA

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: New Mexico GeologicalSociety Guidebook, 54th Field Conference, Geology of the Zuni Plateau, 2003, pp. 133-138.
Diopside
Formula: CaMgSi2O6
Reference: New Mexico GeologicalSociety Guidebook, 54th Field Conference, Geology of the Zuni Plateau, 2003, pp. 133-138.
Forsterite
Formula: Mg2SiO4
Reference: New Mexico GeologicalSociety Guidebook, 54th Field Conference, Geology of the Zuni Plateau, 2003, pp. 133-138.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: New Mexico GeologicalSociety Guidebook, 54th Field Conference, Geology of the Zuni Plateau, 2003, pp. 133-138.
Sanidine
Formula: K(AlSi3O8)
Reference: New Mexico GeologicalSociety Guidebook, 54th Field Conference, Geology of the Zuni Plateau, 2003, pp. 133-138.

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Forsterite9.AC.05Mg2SiO4
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Sanidine9.FA.30K(AlSi3O8)

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Sanidine76.1.1.2K(AlSi3O8)

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
OOxygen
O SanidineK(AlSi3O8)
O DiopsideCaMgSi2O6
O PhlogopiteKMg3(AlSi3O10)(OH)2
O ForsteriteMg2SiO4
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg ForsteriteMg2SiO4
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al SanidineK(AlSi3O8)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si SanidineK(AlSi3O8)
Si DiopsideCaMgSi2O6
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si ForsteriteMg2SiO4
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
KPotassium
K SanidineK(AlSi3O8)
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca DiopsideCaMgSi2O6
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Campanian - Coniacian
72.1 - 89.8 Ma



ID: 2967287
Mancos Shale, upper part

Age: Late Cretaceous (72.1 - 89.8 Ma)

Stratigraphic Name: Mancos Shale

Comments: Original map source: Green, G.N., Jones, G.E., and Anderson, O.J., 1997, The Digital Geologic Map of New Mexico in ARC/INFO Format: U.S. Geological Survey Open-File Report 97-0052, 9 p., scale 1:500,000.

Lithology: Major:{shale,sandstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Early Jurassic - Late Triassic
174.1 - 237 Ma



ID: 3185972
Mesozoic sedimentary rocks

Age: Mesozoic (174.1 - 237 Ma)

Lithology: Sandstone-conglomerate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lucas, Spencer G., Semken, Steven C., Berglof, William, and Ulmer-Scholle, Dana (2003) New Mexico Geological Society Guidebook, 54th Field Conference, Geology of the Zuni Plateau, pp. 133-138.
Delaney, Paul T. and David D. Pollard (1981) Deformation of Host Rocks and Flow of Magma during Growth of Minette Dikes and Breccia-bearing Intrusions near Ship Rock, New Mexico.
Delaney, Paul T. (1987) Ship Rock, New Mexico: The vent of a violent volcanic eruption, Geological Society of America Centennial Field Guide—Rocky Mountain Section: 411–415.
Northrop, S.A. and LaBruzza, F.A. (1996) Minerals of New Mexico, revised Third Edition.

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