© ICDP, the International Continental Scientific Drilling Program, 1996-2020

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IODP Workshop 2015: APVCM

South America, Argentina, Argentine Continental Margin

new workshop-proposal: APVCM15
for the funding-period starting 2014-10-01
by Roger D. Flood, Thomas Gorgas, Ernesto Schwarz, Gabriele Uenzelmann-Neben, Francisco Javier Hernández-Molina, Jennifer F. Biddle, Roberto A. Violante, Guillaume Saint-Onge, Jens Grützner
Abstract
The Argentine Continental Margin (ACM), one of the largest margins worldwide, is a complex feature where geotectonic evolution as well as the post ocean-opening history configured three types of margin (see map): passive volcanic rifted (Type “E”), transcurrent (sheared, Type “F”) and mixed (convergent and sheared, Type “A+F”). Apart from its implications in the evolution of the Southern Ocean, the ACM constitutes a key region in the global oceanographic-climatic system as it is the only place in the Southern Ocean with a net water-masses exchange between equatorial and south polar regions. Strong Antarctic-sourced currents run along the margin driven by the Coriolis force from 56°S reaching regions up to at least 34°S or even farther North. Margin evolution has been affected by climate, current, sea-level, and tectonic processes as well as by sediment input patterns and history. All these characteristics, added to the fact that this is a critically important but under-sampled portion of the global ocean conveyor belt, makes it important to understand how IODP scientific drilling can be used to recover the important records and sediments that lie within the “passive” sector of the margin (APVCM), one of the remaining “White Spots” of the world’s oceans.
Scientific Objectives
  • Topics addressed during the Workshop are expected to include:
  • - Evolution of the South Western Atlantic Ocean - Structure of the Argentine Passive Volcanic Continental Margin (APVCM) - Nature and timing of the rifting and thermal evolution of the margin - Nature of the sedimentary processes and facies that have shaped the margin.
  • - Margin construction, stability and evolution - Paleoceanographic, including land and ocean climate, records from this critical margin - History and character of surface and deep circulation along the Argentine margin - Opportunities for diagenetic, fluid flow and deep biosphere studies
Keywords
APVCM15, Argentina, IODP, South america
Location
South America, Argentina, Argentine Continental Margin: -43.00000, -57.00000

© ICDP, the International Continental Scientific Drilling Program, 1996-2020

www.icdp-online.org