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2 March 2017
A new U.S. Geological Survey study offers a view into the past behavior of large earthquakes along the southern San Andreas Fault. In the study, USGS geologist Kate Scharer and her team excavated trenches across the fault near Frazier Mountain in northeastern Ventura County. This section of the San Andreas previously had no long paleoearthquake record. The researchers found evidence of 10 ground-rupturing earthquakes on this section of the fault between 800 A.D. and the last rupture in 1857.
16 February 2017
The submarine volcanism Chapman Conference is at an end, and by all means it was a success. We had 102 scientists from 13 countries, including 27 students, attend. Submarine volcanologists got to talk to subaerial volcanologists. We saw cool videos of scientists pouring lava over water and ice. We went on a field trip and saw seals and dolphins. We talked about lots and lots of volcanoes (I stopped counting at 27).
13 February 2017
After our morning of watching Tasmanian Devils tear apart scraps of meat and me trying desperately to take a selfie with a kangaroo, we finished the mid-conference field trip with a 3-hour eco-cruise around the Tasman Peninsula. The peninsula has some of the most beautiful coastline in the world, which includes some amazing exposed rock formations, which our group of geologists were all too happy to see.
9 January 2017
After a 25-meter drive on Sol 1574, Curiosity again has bedrock exposed in her arm workspace. To balance desires to sample the composition of the rocks along the traverse and to make good progress toward the south, contact science and another drive are both planned for Sol 1575.
15 November 2016
Geophysicists have compiled the most detailed maps yet of the geologic forces controlling the locations, types and magnitudes of earthquakes in Texas and Oklahoma. These new “stress maps” provide insight into the nature of the faults associated with recent temblors, many of which appear to have been triggered by the injection of wastewater deep underground.
21 September 2016
Utah’s iconic Rainbow Bridge hums with natural and man-made vibrations, according to a new study accepted for publication today in Geophysical Research Letters, a journal of the American Geophysical Union. The study found both natural waves in Lake Powell and induced earthquakes in Oklahoma cause the rock bridge to vibrate at different resonant frequencies.
14 September 2016
This is the third in a series of dispatches from Rebecca Fowler, a science writer documenting the work of scientists conducting fieldwork at the Atlin ophiolite in British Columbia.
8 September 2016
This is the second in a series of dispatches from Rebecca Fowler, a science writer documenting the work of scientists conducting fieldwork at the Atlin ophiolite in British Columbia.
2 September 2016
This is the first in a series of dispatches from Rebecca Fowler, a science writer documenting the work of scientists conducting fieldwork at the Atlin ophiolite in British Columbia.
5 April 2016
Erosion by summertime melt-driven streams on Greenland’s ice sheet shapes landscapes similarly to, but much faster, than do rivers on land, according to a new study. The approach used to study the drainage system of the ice sheet should serve to broaden the scientific understanding of melt rates and improve projections about ice sheet response to climate change, said Leif Karlstrom, a geologist at the University of Oregon in Eugene and lead author of the study.
20 January 2016
In the early 1900s, before Alaska was part of the United States, geologists roamed this northern territory on foot and horseback, noting its features and terrain on hand-drawn maps. Nearly 100 years later in 1996, U.S. Geological Survey (USGS) research geologist Frederic Wilson and a dozen colleagues undertook the task of using some of the information contained in these field notes, sketches and maps, along with many other sources of data, to create the first fully digitalized geological map of Alaska.
17 December 2015
Stanford University’s Miles Traer, once again, is cartooning from the AGU Fall Meeting in San Francisco.
20 October 2015
The ChemCam RMI images of the drill hole planned yesterday were successfully acquired and received, and were used today to plan 2 parallel LIBS rasters down the hole. The additional LIBS raster should be useful in measuring variations in chemistry among individual sand grains and in detecting thin veins. ChemCam and Mastcam will also observe a target dubbed “Marshall” to see whether silica enrichment extends along other fractures near the …
27 May 2015
By Lauren Edgar A short bump on Sol 997 put Curiosity in a great position to investigate a few different rock units in Marias Pass, using the instruments on the rover’s arm. The 2.5 m drive brings our total odometry to 10,599 m. With the upcoming solar conjunction (Mars will be on the opposite side of the sun from the Earth, so we can’t communicate with the rover for most …
By Lauren Edgar Curiosity spent the weekend characterizing the terrain and bedrock exposed in Marias Pass. Curiosity drove 33 m further into Marias Pass, bringing our total odometry to 10,596 m. The drive set us up perfectly to investigate the contact between two different types of bedrock – the underlying Pahrump unit and the overlying Stimson unit. Today’s plan is focused on characterizing the contact in this new location, and …
26 August 2014
Meteorologists in general do not know much about Geology, but broadcast mets are usually the first person newsroom producers (and the public) turn to when there is an earthquake, tsunami, meteor showers etc. I had a couple of great courses in Geology working on my masters, and a field trip to the Washington State was a fantastic learning experience, and it left me with a lifelong fascination of rocks and …
23 June 2014
I know just enough geology to be dangerous, but I highly recommend a trip through Death Valley NP. Make sure you bring a good roadside geology book, and better yet, read it before you go. I took advantage of the drive back to Las Vegas from the AMS weather conference in Lake Tahoe to spend a Sunday in the park, and it is one of the most beautiful places I’ve …
24 January 2013
The other day I got a message asking about where the earth gets its heat. It brings up a number of misconceptions that I thought would be worth spending a post discussing, so here goes: Many people assume the earth to be millions if not billions of years old. Lava is molten, but the earth being only 8,000 miles in diameter has no internal heat source. It is almost like …
23 April 2012
Well, I survived Operational Readiness Test 8 (ORT)! Prior to this week, my only experience with rover operations was as payload downlink lead (PDL) for the color cameras on the Mars Exploration Rovers (MER). I joined MER well into the extended mission, when all of the bugs had been worked out and the planning process was very efficient and streamlined. My day as a Pancam PDL is pretty easy: take …