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Archive for November 4th, 2021

En gryde i Bolivia, hævet havbund

Det er et privilegium i vor tid at man kan “rejse” – med billeder – over en stor del af jorden. En henvisning til Maragua i Bolivia førte til denne lille billedtur, først “krateret”, som er en tektonisk plade, der er hævet og hvor kanterne er hævet mere end midten. Eller noget … se nederst.

Det ser noget tørt ud, hvordan kan der leve mennesker dér?

Worldly-adventurer skriver:

One of the activities that had been top of my list since arriving in Bolivia was hiking to the Maragua Crater, a strange rock formation a short distance from the capital and one of the most adventurous trips to take from Sucre.

The crater epitomises why Bolivia is one of the most visually stunning countries that I’ve ever visited: fields of wheat and corn appear in patches across the central ground of the crater, while the surrounding hills seem to roll and swirl – all thanks to the powerful forces of tectonic activity which have shaped the landscape over millennia.

Beyond this example of nature at its most splendid, this region of Bolivia has ancient 2,000-year-old cave paintings nestling in rocky outcrops and dinosaur footprints carved into rocky outcrops.

Hvordan “krateret” er dannet er ikke så let at få forklaret ved en søgning, måske Deutsches Wikipedia er det bedste, her er det næstbedste, Geoscience Research Institute, (grisda, kristent videnskabs-institut med mange Gud-relaterede artikler men med respekt for videnskab) https://www.grisda.org/bolivia-dino-land

Maragua syncline

View of part of the Maragua syncline, known locally as “El Crater”. The pale colored layers correspond to Cretaceous sandstones and marine limestones. In the center, the red fill consists of layers of sandstone of continental origin that are more recent than those at the edges.

Written by Donald

Thursday, November 4, 2021 at 11:45 GMT+0000

Posted in Byggeri, Jordens Historie

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