Geology news

sand dunes

Louis Hissink on sand dunes - provoked by Gary Gilligan's recent guest post. At https://malagabay.wordpress.com/2016/05/03/louis-hissink-sand-dunes/ .... we learn he was a geologist working in the deserts of western and central Australia. He was tasked with counting sand dunes in order to navigate (prior to GPS) so he got to learn a lot about them - and to realise the dunes were extraordinarily stationary. Unshifting. Just as well I suppose if you are going to count the sand dunes in order to know where in the desert you might be.

Sand and Gary

Gary Gilligan has an interesting article on sand at https://malagabay.wordpress.com/2016/04/26/guest-post-by-gary-gilligan/ ... the purity of sand seems to belie the standard explanation. The amount of sand seems to defy the geological mainstream theory. How is sand transported to create vast dunes - and then we have something like this ....

Guy Berthault

Gary Gilligan sent in an interesting link - www.increasinglearning.com/blog/stratigraphy ... and see also www.youtube.com/watch?v=okJzgEZbdVg ... The former is a young Creationist web site but it seems that Berthault himself was not so inclined - see www.noanswersingenesis.org.au/berthault_is_yec_henke.htm .. where in response to a post he turns round and says he is not a Creationist. However, this view appears to have spread around mainstream and he is usually criticised on the basis his article is popular on Creationist web sites.

Earth Wobbles

At https://tallbloke.wordpress.com/2016/04/09/nasa-study-solves-two-mysteri... ... and at www.yahoo.com/news/nasa-global-warming-now-changing-earth-wobbles-180545... ... which in The Independent newspaper becomes a headline about global warming responsible for causing the spin axis of the earth to wobble (and no wonder that newspaper is not a viable business any longer and is ceasing a print edition).

Loess again

A few weeks ago we had an article that associated loess formations with water - a river cutting a channel through the Tibetan Plateau and carrying downstream debris from the eroded rock in that part of the world. This was contrary to normal mainstream thinking in regard to loess formation. The consensus view is that loess is formed by wind as the erosion agent. Not water. It was therefore a surprise to find an article based on field research that actually stated water erosion had caused at least one loess formation in China.

drumlins

Drumlin hills, shaped like upturned boats, are an Ice Age land form, well known in geology. However, the use of satellite images and LiDAR (ground penetrating radar from aircraft flying over regions of interest) has shown up the surface of our planet in great detail - and is springing surprises. Drumlins are often found in clusters, sometimes in their hundreds and thousands (mainly in Canada although drumlins also occur in Europe, even as far south as Ireland). They are thought to be footprints of the Ice Ages.

Indian board games

At http://archaeologynewsnetwork.blogspot.co.uk/2016/03/land-bridges-linkin... ... where we have an exercise based on an assumption. This is that India was once an island that was formerly attached to Antarctica and Australia and like the latter it travelled over millions of years across what is now the Indian Ocean to bump into Asia. It was an almighty bump as it involved that part of Asia folding over and over to create the Himalayan Mountains.

Bisti Badlands

  ... the Bisti Badlands are located in New Mexico. At www.smithsonianmagazine.com/travel/these-massive-rock-formations-look-ju... ... we learn the Badlands have pillars of eroded sandstone rock and weird formations that look as so fragile that a blustery wind might blow them over. The giant cracked eggs are on the ground - but they are also entirely geological in origin.

mountain mischief

I hadn't thought of this but as most mountain chains are assumed to be the result of continents colliding causing the crust to fold, how do they get around the odd mountain belt that isn't anywhere near another land mass - such as the mountains in the SE of Australia. Of course, the idea of folding is one of those theories that has got stuck into mainstream as nobody has really come up with an acceptable alternative. It is repeated because geologists feel they have to 'know' why mountains form - and the folding idea is a way to get questions on the subject.

Ichthyosaurs

Climate change is blamed for a lot of things. At http://phys.org/print376640171.html ... and now is is blamed from the demise of the ichthyosaurs - marine reptiles of the Jurassic. However, a clue lies in that we are told the climate 'changed' - avoiding the question, what caused the climate to change dramatically. Catastrophism may very well be one reason - a catastrophic event of some kind.