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El Huariche in Huasca de Ocampo, Hidalgo, Mexico — The Central Highlands (North America)
 

The Beauty of Geometric Lava

Comarca Minera

— Geoparque Hidalgo —

 
 
The Beauty of Geometric Lava Marker image. Click for full size.
Photographed By J. Makali Bruton, December 9, 2020
1. The Beauty of Geometric Lava Marker
Inscription.  

La belleza de la lava geométrica
Prismas Basálticos
Los prismas que observas frente a ti corresponden a un flujo de lava resultado de actividad volcánica conocida como volcanismo efusivo ocurrida hace 2.58 millones de años (en las épocas Plioceno-Pleisoceno).

La geometría tan peculiar de estas columnas es producto del enfriamiento de la lava al entrar en contacto con un cuerpo de agua o saturado de agua, como un pantano o un antiguo lago (1). Algunas columnas alcanzan hasta 40 metros de altura, lo que 'sugiere la profundidad mínima del medio acuoso así como el espesor del flujo de lava (3). Un prisma puede tener cinco o seis caras (2) aunque esto varía en función del número de fracturas formadas durante el enfriamiento (4).

La coloración oscura de estas rocas se debe a su composición química rica en magnesio, hierro y calcio, principalmente. Los minerales que las componen son olivinos, plagioclasas, piroxenos y óxidos de hierro. Los colores naranja o rojo se deben a la oxidation de los minerales de las columnas (5). Una lava de composición basáltica, como la que produjo estas columnas, puede
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llegar a alcanzar 1000 °C.

Pie de fotos
1 Un derrame de lava originó los prismas
2 Geometría de los prismas y contracción de la roca durante el enfriamiento
3 Espesor del flujo de lava que produjo estos prismas
4 Las líneas punteadas resaltan las fracturas de enfriamiento
5 Las variaciones en algunos prismas reflejan su composición química

English:
The Beauty of Geometric Lava
Basaltic Prisms
The prisms you observe in front of you correspond to a lava flow, result of effusive volcanic activity that occurred 2.58 million years ago (Pliocene – Pleistocene epochs).

Dark coloration of these rocks comes from its chemical composition rich in magnesium, iron and calcium, mainly. Rock-forming minerals of these columns are olivine, plagioclase, pyroxene and iron oxides. Orange colors or red indicate oxidation of minerals in the columns (5). Basaltic lava, like the one that produced these columns can reach 1000 °C.

Captions
1 Lava flow that originated the prisms
2 Geometry of prisms and contraction of rock during cooling
3 Thickness of lava flow that produced these prisms
4 Dotted lines highlight cooling fractures.
5 Color variations of some prisms reflect their chemical composition
 
Topics. This historical marker is listed in these topic lists: Environment
The Beauty of Geometric Lava Marker image. Click for full size.
Photographed By J. Makali Bruton, December 9, 2020
2. The Beauty of Geometric Lava Marker
Parks & Recreational Areas.
 
Location. 20° 13.975′ N, 98° 33.797′ W. Marker is in El Huariche, Hidalgo, in Huasca de Ocampo. Marker can be reached from Camino a Prismas Basálticas, on the left when traveling east. Touch for map. Marker is in this post office area: El Huariche HGO 43516, Mexico. Touch for directions.
 
Other nearby markers. At least 8 other markers are within 13 kilometers of this marker, measured as the crow flies. Basaltic Prisms of Santa María Regla (about 120 meters away, measured in a direct line); Basaltic Prisms (about 180 meters away); a different marker also named Basaltic Prisms (about 180 meters away); The San Antonio Dam (about 210 meters away); The Church of San Juan Bautista (approx. 3.6 kilometers away); Consuelo Velásquez Sosa (approx. 3.6 kilometers away); Coronel José María Pérez (approx. 11.4 kilometers away); Benito Juárez (approx. 11.4 kilometers away). Touch for a list and map of all markers in El Huariche.
 
A view of the basaltic prisms image. Click for full size.
Photographed By J. Makali Bruton, December 9, 2020
3. A view of the basaltic prisms
 
 
Credits. This page was last revised on December 22, 2020. It was originally submitted on December 22, 2020, by J. Makali Bruton of Accra, Ghana. This page has been viewed 95 times since then and 7 times this year. Photos:   1, 2, 3. submitted on December 22, 2020, by J. Makali Bruton of Accra, Ghana.

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May. 20, 2024