alb3843281

Joshua Tree Rock Formations

Monzogranite peak breaking up from jointing, mostly vertical.  A prominent aplite dike cuts through the top.  Spheroidal weathering rounds off and smooths the boulders.  This is also an inselberg, a corestone isolated in ages past by deep chemical weathering of the quartz monzogranite.  Joshua Tree National Park, California.
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Titre:
Joshua Tree Rock Formations
Monzogranite peak breaking up from jointing, mostly vertical. A prominent aplite dike cuts through the top. Spheroidal weathering rounds off and smooths the boulders. This is also an inselberg, a corestone isolated in ages past by deep chemical weathering of the quartz monzogranite. Joshua Tree National Park, California.
Crédit:
Album / Science Source / Charlie Ott
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Modèle: Non - Propriété: Non
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Taille de l'image:
3681 x 4750 px | 50.0 MB
Taille d'impression:
31.2 x 40.2 cm | 12.3 x 15.8 in (300 dpi)
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