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Latest Historical geology Stories

Algae Reveal History Of Arctic Sea Ice
2013-11-19 12:15:57

Brett Smith for redOrbit.com - Your Universe Online An international team of researchers has developed a novel method for tracking changes in Arctic sea ice through the analysis of growth layers of seafloor algae, according to their report in the Proceedings of the National Academy of Sciences. The study found that the algae Clathromorphum compactum accumulates a calcite crust as it grows and changes to this crust over time can be analyzed to reveal historical conditions of the...

Mass Extinction During The Pangea Integration
2013-11-04 03:21:57

redOrbit Staff & Wire Reports - Your Universe Online The integration of Pangea that began during the early Permian period may have caused the environment to deteriorate, playing a role in the mass extinction event that occurred 250 million years ago, according to research appearing in the most recent edition of the journal Science China Earth Sciences. In the study, co-authors, professor Yin Hongfu and Dr. Song Haijun of the State Key Laboratory of Geobiology and Environmental...

Dwarfism In Mammals Also Occurred During Second Warming Period
2013-11-03 05:03:03

redOrbit Staff & Wire Reports - Your Universe Online While scientists have known for several years that some mammals became smaller during a period of warming known as the Paleocene-Eocene Thermal Maximum (PETM), researchers from the University of Michigan have found a second instance of mammalian “dwarfing” attributable to increasing temperatures. During the PETM, which occurred approximately 55 million years ago, mammals such as primates and groups that include deer and horses...

High School Student Discovers Baby Dinosaur Fossil
2013-10-22 14:59:23

[ Watch the Video: Baby Parasaurolophus Dinosaur ] Lee Rannals for redOrbit.com - Your Universe Online The Raymond M. Alf Museum of Paleontology at The Webb Schools announced on Tuesday one of its students has discovered the youngest, most complete fossil skeleton of a Parasaurolophus. Three-dimensional scans of the entire fossil have been made available for free online, making this dinosaur the most digitally accessible one to date. High school student Kevin Terris discovered the...

Oxygen Levels Prior To The Cambrian Explosion May Have Been Enough For Life
2013-10-19 05:00:29

redOrbit Staff & Wire Reports - Your Universe Online An international team of researchers has discovered that the Earth’s oxygen content 2.1 billion years ago was the same as it was during the so-called Cambrian explosion that occurred approximately 542 years ago and resulted in the appearance of most major animal phyla. Given the fact that oxygen and the development of advanced life are inextricably linked, this led the study authors to ponder the sudden emergence of living...

Antarctic Volcano Seamounts Present Many Riddles To Volcanologists
2013-10-18 05:20:11

April Flowers for redOrbit.com - Your Universe Online When you think of the Antarctic, images of snow, ice and glaciers are the usual associations. We forget that it is also a region of fire, dotted with volcanoes on the mainland and the surrounding islands. Some of these volcanoes are extinct and some are still active, such as the Marie Byrd Seamounts in the Amundsen Sea. Today, their summit plateaus are at depths of 7,800 - 5,200 feet, making them difficult to reach with conventional...

Glacial History Affects Alpine Plant's Shape And Growth Habit
2013-10-17 08:17:50

University of Basel During the Ice Ages the European Alps were covered by a thick layer of ice. Climate fluctuations led to great changes in the occurrences of plants: They survived the cold periods in refugia on the periphery of the Alps which they then repopulated after the ice had drawn back. Such processes in the history of the earth can be detected by molecular analysis as "genetic fingerprints": refugia and colonization routes can be identified as genetic groups within the plant...

2013-10-04 10:10:03

Dartmouth, other researchers explore global warming's ecological, cultural, health impacts on indigenous peoples New England's Native tribes, whose sustainable ways of farming, forestry, hunting and land and water management were devastated by European colonists four centuries ago, can help modern America adapt to climate change. That's the conclusion of more than 50 researchers at Dartmouth and elsewhere in a special issue of the journal Climatic Change. It is the first time a...

Warming Climate Could Mean Trouble For Farmers And Horticulturists
2013-10-03 04:11:51

redOrbit Staff & Wire Reports - Your Universe Online The degree-day model used by farmers and horticulturists to determine when it is safe to plant crops and ornamental plants could become untrustworthy as a result of global warming, according to research now appearing online in the journal Global Change Biology. The degree-day model, which has historically helped agricultural workers determine when leaves will arrive, is a measure of how many degrees above or below a mean the...

Pleistocene Ice Sheet Evidence Uncovered
2013-10-01 04:53:02

April Flowers for redOrbit.com - Your Universe Online Traces of large ice sheets from the Pleistocene on a seamount off the north-eastern coast of Russia have been discovered by a team of geologists and geophysicists from the Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research. For the first time, these traces confirm that within the last 800,000 years in the course of ice ages, ice sheets more than approximately a mile thick also formed in the Arctic Ocean....


Latest Historical geology Reference Libraries

Hula Painted Frog, Discoglossus nigriventer
2014-08-18 15:55:22

The Hula painted frog was considered extinct by the IUCN since 1996. Very little is known about the species because very few specimens have been found. In 1940 two adults and two tadpoles were collected but the smaller one was eaten by the larger one, and the tadpoles were lost. A single Hula painted frog was found in 1955 which was the last record of this specimen. The extinction of this species is said to be the result of the draining of lake Hula and its marshes in the 1950’s. Only...

Paleontology
2014-01-12 00:00:00

Paleontology or Palaeontology is the scientific study of prehistoric life, including the study of fossils to determine the organisms evolution and interactions with each other and their environments. Paleontological observations have been documented as far back as 5th century BC. The science became established in the 18th century as a result of Georges Cuvier’s work on comparative anatomy, and it developed quickly within the 19th century. The term itself comes from Greek palaios, meaning...

Rainforests
2013-04-19 19:33:20

Rainforests are forests that are characterized by high levels of rainfall, with definitions based on a minimum usual annual rainfall of about 68 to 78 inches. The monsoon trough, or otherwise known as the intertropical convergence zone, holds an important role in producing the climatic conditions that are essential for the Earth’s tropical rainforests. About 40 to 75 percent of all biotic species are native to the rainforests. It’s been estimated that there might be many millions of...

Climate Change
2013-04-01 11:05:27

Climate change is a substantial and lasting change in the statistical distribution of weather patterns over periods of time ranging from decades to millions of years. It might be a change in the average weather conditions, or in the distribution of weather around the average conditions. Climate change is a result of factors that include oceanic processes, biotic processes, variations in solar radiation received buy Earth, volcanic eruptions, and plate tectonics, and human induced alterations...

Geologic Clock With Events And Periods
2012-11-18 19:10:56

The Neoproterozoic is the third of three subdivisions of the Proterozoic Eon (occurring from 1 billion years ago to 542 million years ago). This terminal era of the Proterozoic is itself divided into three sub-periods called the Tonian, Cryogenian, and Ediacaran Periods. The most severe glaciation known in the geologic record occurred during the Cryogenian Period, when ice sheets reached the equator and formed a possible “Snowball Earth.” And the earliest fossils of multi-cellular life...

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Word of the Day
virgule
  • A punctuation mark (/) used to separate related items of information.
  • A little rod; a twig.
This word comes from the Late Latin 'virgula,' accentual mark, a diminutive of 'virga,' rod.
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