Quantcast
Last updated on April 24, 2014 at 10:33 EDT

Latest Historical geology Stories

Climate Predictions Could Take Some Clues From The Pliocene Epoch
2013-04-04 06:51:19

redOrbit Staff & Wire Reports - Your Universe Online Temperature patterns during Earth´s last prolonged global “hot spell” some 5.3 million to 2.6 million years ago differed markedly from those of modern times, suggesting current climate models may need to be adjusted to improve future predictions, according to a study published this week in the journal Nature. The Earth was warmer during that time - known as the Pliocene Epoch - than it is today, and had higher...

Asteroid Caused Massive Firestorm Leading To Global Extinction
2013-03-28 05:17:03

redOrbit Staff & Wire Reports - Your Universe Online Researchers from the University of Colorado claim to have uncovered new evidence supporting the notion that a Manhattan-sized asteroid collided with the Earth some 66 million years ago, triggering a global firestorm that would have led to the extinction of 80 percent of the planet´s species. According to Douglas Robertson of the Cooperative Institute for Research in Environmental Sciences (CIRES) and colleagues, the firestorm...

Comet May Have Caused Chicxulub Crater And Dinosaur Extinction
2013-03-24 05:34:56

Brett Smith for redOrbit.com - Your Universe Online One of the most popular theories on the disappearance of the dinosaurs surrounds the 110 mile-wide Chicxulub crater in Mexico. Many scientists believe the extinction was caused by an asteroid that crashed into Earth, leaving only a massive crater behind. However, a group of American scientists is presenting a theory that the culprit was actually a speeding comet, not a relatively slow-moving asteroid as many theories assert....

Scientists Solve Mystery Of California Tectonics
2013-03-19 12:50:14

Brett Smith for redOrbit.com - Your Universe Online A team of American scientists believe they have solved a geological mystery buried about 100 miles below California. According to a report in the Proceedings of the National Academy of Sciences, geologists from Brown University, Columbia University, the University of Rhode Island and the University of Oregon identified the source of anomalous seismic readings as a fragment of the Farallon tectonic plate, which was pushed deep into the...

Deforestation Protections In The Amazon Are Effective If Measures Are Strict
2013-03-12 06:00:25

redOrbit Staff & Wire Reports - Your Universe Online Deforestation is less likely to occur in areas of the Amazon rainforest that have been placed under strict protection than those that allow for controlled resource extraction, according to a new study published Monday in the online edition of the journal Proceedings of the National Academy of Sciences (PNAS). Furthermore, lead author Christoph Nolte, a doctoral candidate at the University of Michigan School of Natural Resources...

Record Warming Will Lead To Faster Melting Glaciers And The Loss Looks Irreversible
2013-03-08 08:56:04

April Flowers for redOrbit.com - Your Universe Online In the next few centuries, Canada's Arctic Archipelago glaciers will melt faster than ever, according to a new study. Research has revealed that 20 percent of the Canadian Arctic glaciers may have disappeared by the end of our current century, leading to an additional sea level rise of 1.4 inches. The findings, funded in part by EU's ice2sea program, are available online and will be published in an upcoming issue of Geophysical...

Mineral Diversity Gives Clues To Earth's Early Chemistry
2013-03-02 06:00:02

redOrbit Staff & Wire Reports - Your Universe Online A new study focusing on the mineral molybdenite could provide new insight into the way that various geological and biological processes have resulted in changes to the Earth´s chemistry over the years. According to Robert Hazen of the Carnegie Institution for Science´s Geophysical Laboratory, molybdenite is a common ore mineral of a metallic element known as molybdenum. By analyzing samples of the substance obtained from...

Research Provides New Insight Into Snowball Earth Duration
2013-02-28 21:17:15

Lee Rannals for redOrbit.com — Your Universe Online About 635 million years ago, our world was covered in ice during an event called "Snowball Earth," and new details written in the Proceedings of the National Academy of Sciences provide new insight on the duration of this event. According to the Snowball Earth hypothesis, an ice age brought on rapid changes in the atmospheric conditions on our planet, followed by a rapid greenhouse heat wave. This period may have given rise to...

2013-02-28 16:22:53

In the March issue of GSA Today, seven scientists from six countries, led by Jan Zalasiewicz of the University of Leicester, propose a realignment of the terms "geochronology" and "chronostratigraphy" in an attempt to resolve the debate of whether units of the Geological Time Scale should have a single (time) or dual (time and time-rock) hierarchy. In their system, which retains both parallel sets of units, with an option to adopt one or other when appropriate, geochronology refers to all...

Pieces Of Lost Continent Discovered Buried Beneath Indian Ocean
2013-02-25 10:34:59

Brett Smith for redOrbit.com - Your Universe Online Tales of submerged or ℠lost´ areas of land have been prevalent in popular culture since the days of Plato. Yet, while we never found the lost city of Atlantis, an international group of scientists has found evidence of an ancient micro-continent resting beneath two islands in the Indian Ocean. Until around 750 million years ago, all of the dry land on Earth was collected into a single continent called Rodinia, the older...


Latest Historical geology Reference Libraries

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...

Geologic Clock With Events And Periods
2012-11-18 19:08:04

The Paleoproterozoic is the first of three subdivisions of the Proterozoic Eon (occurring from 2.5 billion to 1.6 billion years ago (Ga). This period is marked by the first stabilization of the continents, and also when cyanobacteria--a type of bacteria that uses biochemical processes of photosynthesis to produce oxygen--evolved. Experts have found paleontological evidence that during at least part of the Paleoproterozoic era, about 1.8 Ga, the earth year was about 450 days long, with days...

More Articles (9 articles) »