American Association of Petroleum Geologists

AAPG - an International Organization

March 3-7, 2008
Ushuaia - Patagonia, Argentina

Sponsored by AAPG Research Committee

Conference Conveners

Carlos Zavala
Eduardo Olivero
CADIC, CONICET, Ushuaia, Argentina
Juan José Ponce
Stanley Wharton
BP Trinidad & Tobago
Helena Gamero
Schlumberger Venezuela
Carmen C. Contreras
Schlumberger Venezuela
Ronald J. Steel
The University of Texas at Austin
Roger M. Slatt
The University of Oklahoma
Cornel Olariu
The University of Texas at Dallas
Emmanuel Chapron
Geological Institute, Zürich, Switzerland
Manuel Delgado
PDVSA, Venezuela
Marco Sanguinetti
Schlumberger Mexico

Sediment Transfer from Shelf to Deepwater - Revisiting the Delivery Mechanisms

Review Abstracts

Dates and Location:

March 3-7, 2008 Ushuaia - Patagonia, Argentina


The aim of this conference is to review the different mechanisms of clastic sediment transfer from continental areas to the shelf and deep waters. The main topics will include processes and recent/ancient deposits related to:

  • Hyperpycnal flows and hyperpyenites (deposits)
  • Mass transport complexes (MTC)
  • Classical (resedimented) turbidites
  • Potential of inner shelf as a sediment trap

In recent year, an increasing amount of data support the fact that fluvial currents can enter the sea with a density which often exceeds that of marine waters. These relatively dense currents originate during floods, where the excess in density is related to the high suspended load carried by the freshwater discharge. The situation in which the density of the incoming flow is greater than the receiving basin is known as hyperpycnal flow. Although poorly documented for ancient strata, hyperpycnal flows seem to be very common phenomena. Hyperpycnal discharges provide a non-conventional mechanism that allows the basinward transfer of huge volumes of sediments.

This Research Conference will target specialists in related disciplines to promote broad constructive discussions and perhaps new understanding in sedimentary transfer mechanisms.

  • What are the mechanisms that control and affect the distribution of hyperpycnal flows (river generated turbitidtes)?
  • What are the relationships between hyperpyenites and contourites, conventional turbidites, and MTCs?
  • How important are the delivery mechanisms (rivers) versus the base level change to deliver sediments to basin floor?
  • How can the hyperpycnal paradigm influence oil exploration?

The conference will be broken into three days of oral presentations with additional abstracts accommodated through poster sessions. A two-day field trip will be run after the meeting. The Austral Foreland Basin has magnificent outcrops of Tertiary hyperpycnal deposits exposed along kilometers of marine cliffs located in the northeast coast of Tierra del Fuego. The high quality exposures of hyperpycnal channels, channel-levee transitions and lobes will promote a very constructive discussion and critcism among the attendees.

American Association of Petroleum Geologists
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