Research shows Buchan Caves to be about 3.5 million years old and that Victoria's East Gippsland has remained tectonically active for long times, even into the present-day, which is why residents occasionally report earthquakes. Basically, the uplifting Southern Alps in New Zealand have made stress and strain on the Australian tectonic plate, stress that is then expressed as earthquakes and rising landscapes in Victoria. It's rather amazing that the caves recorded this geological signal all the way from NZ.
For the first time, seismologists can characterize signals as a result of some industrial human activity on a continent-wide scale using cloud computing.
Researchers from the University of Hawai'i at Mānoa revealed the largest and hottest shield volcano on Earth--Pūhāhonu, a volcano within the Papahānaumokuākea Marine National Monument.
Three earthquakes in the Monterey Bay Area, occurring in 1838, 1890 and 1906, happened without a doubt on the San Andreas Fault, according to a new paper by a Portland State University researcher. The paper, 'New Insights into Paleoseismic Age Models on the Northern San Andreas Fault: Charcoal In-built ages and Updated Earthquake Correlations,' was recently published in the Bulletin of the Seismological Society of America.
Three hundred-year-old administrative documents from the Roman government, granting residents permission to repair damage to their buildings, can help modern-day seismologists calculate intensities for a notable sequence of earthquakes that struck central Italy in 1703.
Earth-based experiments on iron-sulfur alloys thought to comprise the core of Mars reveal details about the planet's seismic properties for the first time. This information will be compared to observations made by Martian space probes in the near future. Whether the results between experiment and observation coincide or not will either confirm existing theories about Mars' composition or call into question the story of its origin.
Exhaustive seismic data from repeating earthquakes and new data-processing methods have yielded the best evidence yet that the Earth's inner core is rotating - revealing a better understanding of the hotly debated processes that control the planet's magnetic field.
At an idyllic island in the Mediterranean Sea, ocean covers up the site of a vast volcanic explosion from 3200 years ago. A few hundred kilometers north-west, three other islands still have their volcanic histories from a few million years ago mostly intact. No explosions there. So why the differences between the Santorini caldera and the Aegina, Methana and Poros lava domes? Researchers used volcanic "fingerprints' and plate tectonics research to find out why.
The geologic record is exactly that: a record. The strata of rock tell scientists about past environments, much like pages in an encyclopedia. Except this reference book has more pages missing than it has remaining. So geologists are tasked not only with understanding what is there, but also with figuring out what's not, and where it went.
Months prior to the earthquakes in Chile 2010 and Japan 2011, oscillations of the earth's surface occurred, in extensions of about 1,000 kilometers in each country, after which the decoupling of the tectonic plates was generated, causing both major earthquakes.