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Shallow and Deep-Water Carbonates

In addition to our existing research projects, we expand the research inactive rift basins

and start two new initiatives; one is the beginning of a petrographic data base and the

second multidisciplinary study of a cores from a lowstand fringing reef offshore

Mozambique that grew during the last glacial maximum. With the help of ENI, these cores

were made available to us. This core analysis will be a major focus in our shallow-water

carbonate theme. The fringing reef drowned during the deglaciation and was never

subaerially exposed. Thus, these cores carry a unique record of the Indian Ocean during

the last glacial maximum and giving us the opportunity to study unaltered marine

cementation in a reefal system. In the first year, the focus will be on core description,

stratigraphy, and preliminary chemical and petrophysical analysis.

Our studies in active rift basins in the Red Sea and the Gulf of Aqaba are ongoing with

a focus on the lowstand sterilization hypothesis in the Red Sea rift brine pools. The Gulf of

Aqaba is an unusual warm basin that can be compared to the Cretaceous oceans.

Composition and diagenesis of samples from the deep slope will be analyzed and examined

for their difference to “normal” cold ocean slope samples.

Current Projects



Mozambique Shelf Cores – Research Initiative

Eberli_Mozambique_1_

Project Media
     
Eberli_Mo...ctus.pdf
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File Size:405KB

 

Investigators: Gregor P. Eberli, Ricardo Argiolis, Ralf J. Weger, James Klaus, Peter K. Swart, Amanda Oehlert, and others

Project Objectives

  • To decipher the timing of initiation, growth and drowning of the fringing reef during the last glacial maximum.

  • To assess the composition of the reef and the contribution of microbial crusts in stabilizing the reef.

  • To thoroughly analyze the diagenetic alteration in this reef that was never exposed to fresh water.

  • To produce a comprehensive petrophysical data set of the core material that includes porosity, acoustic velocity, and resistivity.



     

MOZAMBIQUE SHELF CORES – PHASE 1: CORE CURATION AND DESCRIPTION

Eberli_Mozambique2_1_

Project Media
     
Eberli_Mo...us_2.pdf
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File Size:3MB

 

Investigators: Gregor P. Eberli, Ralf J. Weger, Sophie Gigante, Paulina Manekas, James Klaus, and International Partners

Project Objectives

  • To describe the composition of the cores and quantify the different components, including corals, microbialites, rubble, carbonate sand.
  • Examine the difference in composition of the (older) fringing reef that grew during the Late Glacial Maximum (LGM) and the younger reef at the edge of the Upper Terrace.
  • Establish a robust age frame of reef growth with C14 dating.
  • Start a sampling campaign for a comprehensive diagenetic and petrophysical investigation of the cores and produce preliminary data set.


     

THE RED SEA SURVIVED THE LAST GLACIAL MAXIMUM

Chakraborty_RedSea_1_

Project Media
     
Chakrabor...ctus.pdf
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File Size:333KB

 

Investigators: Morgan I. Chakraborty, Arash Sharifi, Francois Tissot, Ali Pourmand, Bolton Howes, Peter K. Swart, Chaojin Lu, and Sam J. Purkis

Project Objectives:

  • To investigate the prevailing hypothesis of Red Sea basin-wide ecological collapse during glacial sea-level lowstands.


     

CARBONATE SLOPES IN THE GULF OF AQABA

Barkyoumb_Aqaba_1_

Project Media
     
Barkyoumb...ctus.pdf
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File Size:6MB

 

Investigators: Ellie Barkyoumb, Ralf J. Weger, Sam Purkis, Peter K. Swart, and Gregor P. Eberli

Project Objectives:

  • Analyze slope carbonates from the Gulf of Aqaba, with the goal of revealing what organic and inorganic mechanisms are at play to stabilize and bind sediments in this location.

  • Determine the role of microbial and marine cement on the stability of the slope.

  • Examine if the warm waters in the Gulf of Aqaba produce a different diagenetic cementation pattern than the marine diagenesis in cold oceans.



     

INCORPORATION OF CURRENTS INTO SEQUENCE STRATIGRAPHIC MODELS

Eberli_Currents_1_

Project Media
     
Eberli_Cu...ctus.pdf
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File Size:335KB

 

Investigators: Gregor P. Eberli

Project Objectives:

  • Provide examples of the contribution of currents to continental margin sequence architecture.

  • Delineate criteria for recognition of contourite drifts in a depositional sequence.

  • Outline a sequence stratigraphic model that incorporates the facies both current and sea-level controlled deposits.

  • Make a case that unconformity-based sequence stratigraphy is better suited to incorporate current-derived deposits than other sequence stratigraphic methods.



     

ATLAS OF CARBONATE CONTOURITES

Bashah_Contourites_1_

Project Media
     
Bashah_Co...ctus.pdf
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File Size:419KB

 

Investigators: Sara Bashah and Gregor P. Eberli

Project Objectives

  • Provide a database of global carbonate contourite depositional systems.
  • Analyze the geometry and dimensions of the various contourite depositional systems.


     
 

 

 

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