Man-made changes bring about new epoch in Earth's history
Geologists from the University of Leicester propose that humankind has so altered the Earth that it has brought about an end to one epoch
of Earths history and marked the start of a new epoch.
Jan Zalasiewicz and Mark Williams at the University of Leicester and their colleagues on the Stratigra...
AGU journal highlights -- Aug. 6, 2009
... only about 3.7 billion years ago. In recent years, however, remote sensing studies have hinted at the existence of Martian lakes during the Hesperian epoch
(about 3.5 billion to 1.8 billion years ago). Using images from the High Resolution Imaging Science Experiment (HiRISE) camera on board NASA's Mars Re...
Climate-caused biodiversity booms and busts in ancient plants and mammals
...& Science examined the records of ancient temperatures and information on the fossil plants and mammals that inhabited North America during the Eocene epoch
and found that diversity increased and declined with rising and falling temperatures.
The Eocene began about 56 million years ago with a short peri...
World's largest snake discovered in fossilized rainforest
...gth and weighed more than a ton. Titanoboa , as it is now called, is the largest snake ever known, and was the largest non-marine vertebrate from the epoch
immediately following the extinction of dinosaurs 65 million years ago. "The discovery of Titanoboa challenges our understanding of past climates an...
Ecologists use oceanographic data to predict future climate change
... climate change."
Charles Greene of Cornell University and colleagues reconstructed the patterns of climate change in the Arctic from the Paleocene epoch
to the present.
Over these 65 million years, the Earth has undergone several major warming and cooling episodes, which were largely mitigated by th...
Bays on US Gulf Coast vulnerable to flooding
...erica (GSA) at Houston's George R. Brown Convention Center. Anderson said the magnitude of flooding seen in bays during the Holocene -- the geological epoch
that began 10,000 years ago -- would be noticeable and apparent, even on a year-to-year timescale.
"If you lived at the head of Galveston Bay, near...
A fossilized giant rhino bone questions the isolation of Anatolia, 25 million years ago
... until now was considered to have been an archipelago.
This is the first time that a fossilized giant rhinocerotoid bone dating from the Oligocene epoch
(a period corresponding to intense tectonic movements around the Mediterranean Sea) has been found in Anatolia. Discovered in 2002 during a Franco-Tur...
February Geology and GSA Today media highlights
...ts. These new data will help geologists locate the epoch
boundary more precisely than before.
Tenu...hat we had left the Holocene and had entered a new epoch
- the Anthropocene - because of the global environ...pre- and post-industrialized Earth within the same epoch
(the Holocene). With this article, Zalasiewicz and...
ANDRILL's 2nd Antarctic drilling season exceeds all expectations
...nvironmental and dynamic paleoclimate information in the core."
The goal of this drilling project was sediment core retrieval from the middle Miocene epoch
when, for an extended period, Earth was warmer than today. Florindo and Harwood said they are especially pleased to have recovered such high-quality c...
Lessons from the orangutans: Upright walking may have begun in the trees
The authors propose an evolutionary scenario that begins as other researchers have envisioned. Somewhere toward the end of the Miocene epoch
(24 to 5 million years ago), climate in East and Central Africa became alternately wetter and drier, and the rainforest grew increasingly patchy. Apes...