Geology news

Geological Resequencing

At https://phys.org/news/2021-01-geologic-history-written-garnet-sand.html ... the eastern edge of New Guinea was or is a plate boundary it is thought and has therefore captured a bit of geological interest, not least because of location in a tropical region. The idea is implanted in the theory that New Guinea and Australia are a single plate [with a few bitty bits tacked on] and moved enmasse from a former Gondwana location, formerly attached to India, and Antarctica, and moved northwards to kick up against the Asian plates.

Doggerland - how did it sink

The headline talks about Doggerland sinking but the meat of the story seems to be a change in sea levels. At www.dw.com/en/doggerland-how-did-the-atlantis-of-the-north-sea-sink/a-55... ... Doggerland, the continentle shelf system of the southern North Sea basin. Was it drowned as a result of the Storegga land slide and subserquent huge tsunami wave or did it succomb somewhat later. This article hints that it survived Storegga and an island centred on what is now the Dogger Bank survived the event for hundreds of years.

Irish Dinosaur Remains

Ireland does not seem to have many rock strata from the Jurassic or Cretaceous and has until now been devoid of dinosaur remains. A story in The Times of London from November 25th 2020 had an interesting piece sent in by Paul. An amateur fossil hunter picked up a black stone from a beach strewn with dark basalt pebbles in Co Antrim some 30 years ago. It went into his fossil collection together with another odd piece of rock which turned out to be petrified bone he came upon a year later.

Greenland Melt

Remaining on the theme of unforeseen facts cropping up at a later date we have a story at www.dailymail.co.uk/sciencetech/article-9029805/ ... Japanese researchers have mapped a plume of molten rock, otherwise known as lava, risin beneath the Greenland ice cap. To do this they analysed the speed of seismic waves travelling beneath the earth. The molten rock caused geothermal activity in the North Atlantic. All over the North Atlantic it would seem. Not just in Greenland but on the island of Jan Mayen and Iceland. These two have active volcanoes with their own mantle plumes.

Peruvian Fossil Tree

In Down to Earth geological magazine of November 2020  we have a story about a fossil tree found on Peru's altiplano [the central Andean plateau]. The tree was buried in what is now a cold grassy plain, a high altitude site in southern Peru. The find is said to contradict current mainstream thinking about past climate in the region - between ten and five million years ago. See also www.dailymail.co.uk/sciencetech/article-8674567/ ... and the research was published in Science Advances.

Dust on the Sea Floor

Of interest to catastrophists one might assume. Ancient dust on the sea floor. However, once again the focus is on climate. rather than meteors or comets. Go to https://phys.org/news/2020-11-ancient-sea-floor-climate-history.html ... during the Late Glacial Maximum, around 20,000 years ago, and more, iron containing dust accumulated on the sea floor. Iron is said to fertilise marine phytoplankton. In this case in the South Pacific. It is an odd story if your read it through.

Sea level change 40,000 years ago

At https://phys.org.news/2020-10-years-sea-level-alor-island.html ... a cave on Alor Island in Indonesia, located between Flores and Timor, has been intermittently occupied over 40,000 years. Sea levels in that time experienced a series of highs and lows. Sometimes it was a cave on the sea shore and sometimes stranded miles inland as the sea shore retreated. People came and went, adapting to the different environments. At 40,000 years ago the sea was near the cave and the people fed themselves on shell fish and sea urchins etc.

Chicxulub

At https://wattsupwiththat.com/2020/05/26/dinosaur-dooming-asteroid-struck-... ... the asteroid that struck earth at the K/T boundary came in at an angle of 60 degrees according to a new study. This is said to have maximised the amount of climate changing gases that subsequently ascended into the upper atmosphere. It likely unleashed billions of tonnes of sulphur, blocking out the sun.

Stone Forests

At first I thought from the headline they were talking about petrified forests, but no. The stone forests (a sea of trees) are the pointy bits on mountains - in China and Madagascar for example. How they were created is the subject of another experiment, of a sort. They have puzzled geologists for some time. The research showed that flowing water carves ultra sharp spikes in land forms. Simulation is involved of course, so we may assume not every possibility was included in the experiment, such as the sort of landscape carving featured on Electric Universe videos.

Raining Sand

This is a good one. Sent in by Gary. We have two links, https://www.space.com/37654-exoplanet-55-cranci-e-facts.html ... www.planetary.org/articles/the-different-kinds-of-exoplanets-you-meet-in... ... and here we have the different kind of exoplanets that have been discovered - orbiting other stars. Some look like planets in our solar system. Some do not. The smaller planets are generally rocky and the larger ones, it is thought, are gassified. Some may even be watery. That is the great hope. In a few short years from nothing to 4000 exoplanets are now known.