INQUA ECR meeting (2-6 Dec 2013, Wollongong, Australia) and Quaternary International Special Issue

The INQUA Early Career Researcher inter-congress meeting will take place from 2 – 6 December, 2013 at Wollongong University, Australia. The meeting will bring together young earth scientists with a research focus on the Quaternary, from grad students to PostDocs. Thematic workshops on scientific writing and Quaternary science will be held and you’ll have the chance to discuss with colleagues fromn all over the world. The application deadline for travel support is 15 September, abstract submission and registration should be made before 1 October. There will be a Special Issue in INQUA’s journal Quaternary International in support of this meeting. This is a unique chance for ECRs, so spread the word and submit articles!  Continue reading “INQUA ECR meeting (2-6 Dec 2013, Wollongong, Australia) and Quaternary International Special Issue”

Field Training Course and Workshop “Tectonic and climatic forcing on the Late Quaternary landscape evolution of Central Argentina”, 14-18 October 2013

From 14-18 October 2013 a field training course will take place in Central Argentina. The course and a workshop are organized by the Sam-GeoQuat Group, the topic is: “From the Pampean Ranges to the North Pampa: Tectonic and climatic forcing on the Late Quaternary landscape evolution of Central Argentina”. Deadline for registration is 30 August, so hurry if you are interested. Download the 1st circular (pdf, <1 MB) here: 1-course-sam-geoquat2013 Continue reading “Field Training Course and Workshop “Tectonic and climatic forcing on the Late Quaternary landscape evolution of Central Argentina”, 14-18 October 2013”

New paper: Wiatr et al., 2013 – Slip vector analysis with high resolution t-LiDAR scanning

A new paper in Tectonophysics deals with the use of terrestrial LiDAR for identifying the slip vectors on fault planes. Thomas Wiatr, Klaus Reicherter, Ioannis Papanikolaou, Tomás Fernandez-Steeger and Jack Mason collected and processed data from Crete island (Greece), where they scanned the scarp of the Spili Fault. They imaged numerous kinematic (slip direction) indicators like slickensides with this relatively new technique. The t-LiDAR data were then compared to traditional compass measurements in order to get an idea about the derivation betwen old-school measurements and high-tech methods.  Continue reading “New paper: Wiatr et al., 2013 – Slip vector analysis with high resolution t-LiDAR scanning”

Quaternary shortening at the Andean orogenic front (31°-33°S), Argentina: Current issues and challenges

Quaternary shortening at the Andean orogenic front (31°-33°s), Argentina: Current issues and challenges

 Carlos Costa1, Emilio Ahumada1, Benjamin Brooks2, Andrew Meigs3, Lewis Owen4, Thomas Rockwell5, Lindsay Schoenbohm6, Carlos Gardini1, Héctor Cisneros1, Fabricio Vázquez1, 7

  1. Universidad Nacional de San Luis, Argentina. costa@unsl.edu.ar
  2. U.S. Geological Survey, USA
  3. Oregon State University, USA
  4. University of Cincinnati, USA
  5. San Diego State University, USA
  6. University of Toronto, Canada
  7. CONICET

Outstanding exposures, new data, and novel hypotheses developed during the last decade have turned the frontal deformation zone of the Andes between 31°S and 33°S (Fig. 1) into one of the most promising areas worldwide for improving the understanding on mountain building processes and seismic hazards related to thrust tectonics.

Because the Andes are relatively narrow in these latitudes, the geodetic signal in the backarc is dominated by the subduction zone locking process at the Chile trench. Nonetheless the geodetic analysis provides some useful constraints on the location and rates of modern backarc shortening, though not necessarily on the vergence. It is currently understood that backarc shortening occurs at rates of ~4-5mm/yr over a zone that is ~30km wide (across-strike) (Brooks et al., 2003; Kendrick et al., 2006). In the north (31°- 32°10° S) this would imply that the west-vergent, Eastern Precordilleran structures are the most likely to be active, while south of 32°10° S the east-vergent structures in the Southern Precordillera belt are likely to be most active (Fig. 1).

Continue reading “Quaternary shortening at the Andean orogenic front (31°-33°S), Argentina: Current issues and challenges”