Catastrophism news

Triassic Reptiles

At https://phys.org/print441438532.html ... fossil crocodiles from the Cretaceous - how did they live and die. Uniformitarian fossilisation and how the process works. Juvenile and adult crocodile fossils in a Queensland deposit - found near the Outback town of Isisford (published by the Royal Society Open Science journal). Two of the crocodiles had a large proportion of their bones still intact - indicating they died near where they lived. We mighlt also add - indicating rapid fossilisation too.

Debunking Toba

This is the title of the piece at https://anthropology.net/2018/03/23/debunking-toba-catastrophe-theory/ ... it is true that catastrophism is not welcome as far as geology and human history is concerned and the fate of the Toba catastrophe is somewhat overdue if some recent studies are anything to go by. The super volcano Toba was first proposed by Stanley Ambrose - and it was popularised by Henry Harpending. In effect, it involved a genetic bottleneck at approximately 70,000 years ago that coincided with the massive eruption of the Toba volcano in Indonesia.

Rifting

At https://phys.org/print439805896.html ... core samples taken from the Mediterranean Sea at three different locations in the Gulf of Corinth provide a record of complex change in marine life and rift faulting in the region. The Corinth Gulf is thought to lie on an active Plate boundary although the term rift can apply to a fault zone. Earthquakes are common. Analysis of the cores came up with something else though and this is that the sea level in the Mediterranean has fluctuated on a number of occasions during the last half a million years.

Glaciers on Mountains

At www.eurekalert.org/pub_releases/2018-03/uow-gim030218.php ... we learn that the Gobi Altai mountain range in western Mongolia seems to conflict with the mainstream storyline of the last Ice Age. It is more or less an established fact that the northern hemisphere was deeply affected by the Ice Age advance during the Late Glacial Maximum, even though there is evidence of boats being used on the Arctic Ocean and great herds of herbivores were feeding in central Asia and Siberia, and apparently in Alaska as well.

Bloat and Float

At https://phys.org/print439043531.html ... one mystery of fossilised dinosaurs concerns the armour plated ankylosaurs. They are often discovered belly up. How does this happen? Out of 32 two fossil specimens from Alberta 26 were belly up. A recent study has worked out it was a case of bloat and float. They are usually found in river or water channel deposits and would have flopped over as a result of turbulent water flow.

Toba Failing

Seems like the Toba super volcano eruption 74,000 years ago is looking weaker. Not only is there evidence it had little to effect people in India we now have evidence of the same in eastern Africa. No sign of an environmental crisis it would seem. Go to http://popular-archaeology.com/issue/winter-2018/article/no-volcanic-win... ... but I suppose one might argue over the dating methodology that was used. Do they have evidence of a downturn at some other period?

Global volcanism and Chicxulub

Sea floor data point to a global volcanism event after the Chicxulub meteor crashed into the Yucatan peninsular - see https://phys.org/print437224338.html ... the highest peak of sea floor spreading (expansion of the sea floor) is deemed to have occurred at the same time as the Chicxulub meteor strike. That makes sense as recent investigations have shown how deep into the crust the asteroid penetrated. It caused massive magamatic activity - all around the world.

Fireballs and Ice Age

Sent in by Gary - at www.dailymail.co.uk/sciencetech/article-5346517/Ancient-humans-witnessed... ... here we are back at the Younger Dryas boundary event. If nothing else these guys are persistent. Every time mainstream gives them a kicking up they pop with another major paper. This times it is a barrage of fireballs as a comet fragmented and disintegrated in the atmosphere, creating a series of rapidly descending meteors that they claim torched a considerable part of the landscape. Geochemcal and isotopic markers have left behind a lot of evidence of their passing.

Plankton Dispersal

Dating the 100,000 year Ice Age cycle depends on oxygen isotope changes in plankton shells taken from the sediment cores of the ocean bottoms. At https://phys.org/print434815829.html ... we learn about a study published in the journal Nature Communications (January 4th 2018) that found that the age of plankton and the strength and direction of currents are key to how they are dispersed in the oceans - more so than water temperature, salinity, and nutrient availability.

Impact Site

At https://phys.org/print432463395.html ... geologists exploring volcanic rocks on the Isle of Skye have exposed a meteorite impact zone - containing rare minerals with an origin in outer space. Some of them are known from the Stardust mission to Comet Wild2 and other bits seem to belong to the actual meteorite itself. A 2m thick ejecta layer confirms the impact - date way back to the Paeolocene era (60 million years ago) and nary a thunderbolt in sight. See the journal Geology (2017) DOI:10.1130/G39452.1