Architecture of a Deep-water Levee Avulsion, Silla Ojo Mesa, Parque Nacional Torres del Paine, Chile
Published:January 01, 2008
Ciarán J. O’Byrne, Brad E. Prather, Zoltan Sylvester, Carlos Pirmez, Brent Couzens, Ru Smith, Mark D. Barton, Gary S. Steffens, Jeremy Willson, 2008. "Architecture of a Deep-water Levee Avulsion, Silla Ojo Mesa, Parque Nacional Torres del Paine, Chile", Atlas of Deep-Water Outcrops, Tor H. Nilsen, Roger D. Shew, Gary S. Steffens, Joseph R. J. Studlick
Download citation file:
Extensive outcrops of coarse-grained channel to fine-grained levee deposits of the Campanian Cerro Torro Formation are present throughout the Torres del Paine National Park in southern chile (1; Fildani et al, chapter 33, this volume). The outcrop panel in 2 represents part of one face of a nearly continuous exposure mapped in this paper that is present on all four faces of a mesa within the Silla Ojo Syncline (1). The depositional architectures consist predominantly of sheetlike, tabular elements comprising interbedded sandstone and shale bedsets, onlapping older levee deposits (described by Barton...
Figures & Tables
Atlas of Deep-Water Outcrops
Tor H. Nilsen, a red-haired Scandinavian who stood more than six feet tall, died October 9, 2005, at his San Carlos, California, home. This was after a valiant five-year fight with melanoma cancer. He was 63. His ashes were scattered at his family plot in Norway in 2006.
He was born in New York City on November 29, 1941, to Mollie Abrahamson and Nils Marius Nilsen of Mandal, Norway, and was the first of their children to be born in the United States. After graduating from Brooklyn Tech, he earned his B.S. in geology from City College of New York in 1962. While there, his prowess on the basketball court impressed a scout from the New York Knicks, but Tor went on to graduate school and earned his M.S. and Ph.D. degrees in geology from the University of Wisconsin at Madison in 1964 and 1967, respectively. His M.S. thesis was a study of Precambrian metasedimentary deposits in the Lake Superior area, and his Ph.D. thesis was a study of Devonian alluvial-fan deposits of the Old Red Sandstone in western Norway.
Dr. Nilsen’s principal expertise was in depositional systems analysis, stratigraphic analysis, and the relationships among tectonics, eustasy, and sedimentation. He began his industry career in 1967 as a research geologist with the Shell Development Company in Houston, Texas, and Ventura, California, where he worked on the tectonics and sedimentation of Tertiary shelf systems of coastal California. He subsequently spent two years with the U.S. Army Corps of Engineers as the Military