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I have just come back from a trek across the Sahara Desert to raise money for charity and I found this for my 7 year old who wants to be a geologist. Can anyone help identify what it could be please?
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Day One ; Locality Five Sahara Desert 19th February 2019 An advert for Erfoud, the fossil capital of Morocco. But no time today, the sun is setting. "Tomorrow", Anouar promises me. And then suddenly we are out of the mountains and on the fringes of the mighty Sahara Desert, the largest hot desert in the world. (Antarctica and the Arctic are bigger, but cold deserts) Many think of the Sahara as being sand, but actually, only a fraction of it is composed of the ergs (sand and sand dunes), most of the desert is hamada - rock desert. It is often fossiliferous. In the west, around Agadir, it is often yellow and contains Cretaceous fossils such as ammonites, south of there, the whitish yellow rocks of the Palaeogene where whale fossils can be found in the desert, but in the east, such as here, the rocks are often grey or black , hence the term, "Black Sahara". They range in age from the Precambrian stromatolite reefs near Ouarzazate through to some Lower Carboniferous patches North of Merzouga near Erfoud. Here in Merzouga they are mostly Devonian in age. Also nodules and geodes containing crystals and desert roses and other strange geological features may be found. And those aren't mountains in the distance, those are sand dunes. The dunes of the mighty Erg Chebbi up to 150 metres high. But no time for collecting today. The sun was setting and it was time for dinner and a sleep. We were going to stay in a Berber desert nomad tent, but they're mostly a bit touristy and some have been forcibly shut down since i was there, but the temperature was going to be only i degree above freezing tonight, so, no thank you very much, a hotel it shall be.
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- black sahara
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These came with only vague data: Sahara Desert, Morocco. They are apparently three species of Cerithioidea. A similarly preserved gastropod (a stromboid) with a carnelian shell that I came across had good data: (late Cretaceous (Maastrichtian), western Sahara Desert, Dakhia Region, Assa, Morrocco). They have fine white silica sand with silica cement infill and attached, making cleaning very difficult. Any help would be appreciated.
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- carnelian
- cretaceous
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Diamonds Found in Ureilites Formed During Gigantic Planetary Collisions
Oxytropidoceras posted a topic in Rocks & Minerals
Cosmic Diamonds Formed During Gigantic Planetary Collisions, Goethe University, Frankfurt, September 29, 2020 Nestola, F., Goodrich, C.A., Morana, M. Barbaro, A., Jakubek, R.S., Christ, O., Brenker, F.E., Domeneghetti, M.C., Dalconi, M.C., Alvaro, M., Fioretti, A.M., Litasov, K.D., Fries, M.D., Leoni, M., Casati, N.P.M., Jenniskens, P., and Shaddad, M.H., 2020. Impact shock origin of diamonds in ureilite meteorites. PNSA, Sept 19, 2020. Yours, Paul H.-
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- diamonds
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Can this be a spinosaurus sacrum?
Kutembea posted a topic in Is It Real? How to Recognize Fossil Fabrications
I found this fossil online a few days ago and might be interested in buying it. But I don't know much about the spinosaurus, I just have good knowledge when it comes to the teeth. It is said to be the sacrum of a spinosaurus, it is 13,77 inches (or 35 centimeters). 95 million years old and was found in southern marocco, in the sahara desert. Could it be a spinosaurus sacrum from a small individual or what else could it be?- 3 replies
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- cretaceuos
- sacrum bone
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Did humans create the Sahara desert? New research challenges the idea that changes in the Earth's orbit triggered Sahara desertification, Frontiers, March 14, 2017 https://www.sciencedaily.com/releases/2017/03/170314111320.htm https://blog.frontiersin.org/2017/03/14/did-humans-create-the-sahara-desert/ David K. Wright. Humans as Agents in the Termination of the African Humid Period. Frontiers in Earth Science, 2017; 5 DOI: 10.3389/feart.2017.0000 http://journal.frontiersin.org/article/10.3389/feart.2017.00004/full https://www.academia.edu/31079511/Humans_as_agents_in_the_termination_of_the_African_Humid_Period._Frontiers_in_Earth_Science_5_4_doi_10.3389_feart.2017.00004_2017_ Yours, Paul H.
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- african humid period
- desertification
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I'm curious to find out the nature of an object that I found in the Sahara Desert in 1987. I was 11 years old and very excited because I had never seen a "rock?" like that before. LOL I have kept it wrapped and in a box every since that day....it's in the same condition from the day I found it. Any thoughts or knowledge would be greatly appreciated. Thank You