Geology news

big holes in Yamal

 

At http://siberiantimes.com/science/casestudy/news/n0302-startling-changes-... ... we have giant holes created when pingos erupted after filling with gas. The craters are found on the Yamal peninsular in northern Russia and indications are that not all of them were formed in the same way. They were first noticed last year and a variety of explanations have been offered. One if over 60m deep

Arctic sea bed

At http://phys.org/print358755490.html ... Durham University has updated a map of the Arctic sea bed which depicts the marine resources that have been discovered in recent years, all part of active collaboration between Russia, Canada, Denmark, Norway and the US. See image below

mantle plume blues

At http://phys.org/print358674638.html ... German scientists are questioning another consensus theory, and another important piece of geological thinking. It seems the break up of the continents began around 130 million years ago. Africa and South America began to divide from each other and the mechanism is thought to have involved enormous masses of magma ascending from the deep mantle, rising to a high level of the mantle before the hot mantle plumereached the continental lithosphere, eventually leading to the split.

Killarney (3)

In the latest issue of Down to Earth magazine (issue 92, August 2015, ISSN 0969-3408) we have part 3 on the Irish chalk formation near Killarney in Co Kerry. In this final episode of the story Peter Walsh discusses hypotheses to explain the formation and suggests the geological community is still nowhere near forming an adequate explanation.

deep time tracks

At http://phys.org/print358435621.html ... we get a flavour of how geological deep time affects interpretations of data regarding rocks and geochronology (how long a certain formation took to coalesce into a particular layer in the geological sequence) at this link. In this instance, dinosaur tracks preserved in rocks at Muchehagen, 50km from Hannover. Logic would suggest the tracks were laid down in mud or sand that was subsequently buried and preserved (hardening into rock in the process).

ocean sediments

At http://phys.org/print358435481.html ... an important new study on diatom blooms in the ocean

C14 in fossils

At www.icr.org/article/8829 .. we have a post on carbon dating fossils. The link came via the contact email address on our web site and the argument being made is that measurable amounts of radio carbon should not exist in objects older than 100,000 years ago because they should have decayed into nitrogen 14 before then. The author claims it is an anomaly as radiocarbon is found in material millions of years of age.

geological zeal

At http://phys.org/print357568614.html ... lots of geological mapping took place in the 19th and 20th century (in the US), somewhat before the Plate Tectonics consensus hypothesis saw the light of day. Geologists with great zeal, missionaries guiding the young 'uns, so to speak, have set their sights on modifying old geological data because they claim it has been neutralised by Plate Tectonics. They say much of North America is the equivalent of terra incognito, and should be shown as a white space on geology maps rather than the various colours used for basement rock.

sea levels on the other side of N America

We learnt yesterday, that sea level was surprisingly stable in northern British Columbia over the last 13,000 years - but we now have a new study that claims it is a lot different on the eastern coast of N America. It is said to be anything but stable.

stable sea level

A small piece in the news section of Current World Archaeology 72 (Aug, 2015) (see www.world-archaeology.com) caught my eye - as these things do. Some 13,000 year old footprints of a man, woman and a child were found on the shoreline of an island off the coast of British Columbia - dating back 13,000 year ago (which is very nearly the Younger Dryas boundary), alongside a hearth and two cobble tools. They were made by people walking over grey clay which was then infilled by black sand and that preserved the footprints (we are told).