Erebus volcano, Antarctica, with its persistent phonolite lava lake, is a classic example of an evolved, CO-rich rift volcano. Seismic studies provide limited images of the magmatic system. Here we show using magnetotelluric data that a steep, melt-related conduit of low electrical resistivity originating in the upper mantle undergoes pronounced lateral re-orientation in the deep crust before reaching shallower magmatic storage and the summit lava lake.
View Article and Find Full Text PDFThe original version of this Article incorrectly referenced the Figures in the Supplementary Information. References in the main Article to Supplementary Figure 7 through to Supplementary Figure 20 were previously incorrectly cited as Supplementary Figure 5 through to Supplementary Figure 18, respectively. This has now been corrected in both the PDF and HTML versions of the Article.
View Article and Find Full Text PDFThe Transantarctic Mountains (TAM) are the world's longest rift shoulder but the source of their high elevation is enigmatic. To discriminate the importance of mechanical vs. thermal sources of support, a 550 km-long transect of magnetotelluric geophysical soundings spanning the central TAM was acquired.
View Article and Find Full Text PDFAnn Thorac Cardiovasc Surg
October 2017
Purpose: Benign tumors are known to grow or develop sometimes during pregnancy. We present a case report about a young woman with a growing sternal tumor.
Methods: After her second pregnancy, a 32-year-old female presented with a rapid growing sternal tumor.