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Thermal evolution of the Upper Jurassic to Tertiary sedimentary sequence in the Patagonian fold-and-thrust belt (51° 30' S) - clay minerals and carbonaceous material

English title Thermal evolution of the Upper Jurassic to Tertiary sedimentary sequence in the Patagonian fold-and-thrust belt (51° 30' S) - clay minerals and carbonaceous material
Applicant Schmidt Susanne
Number 149232
Funding scheme Project funding
Research institution Département des sciences de la Terre Université de Genève
Institution of higher education University of Geneva - GE
Main discipline Mineralogy
Start/End 01.01.2014 - 31.01.2018
Approved amount 297'201.00
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All Disciplines (2)

Discipline
Mineralogy
Geology

Keywords (6)

low-temperature/hydrothermal alteration; Magellanes basin; Clay mineral association; carbonaceous material; Patagonian fold-and-thrust belt; phyllosilicate

Lay Summary (German)

Lead
LeadPhyllosilikate gehören zu den am häufigsten vorkommenden, gesteinsbildenden Mineralien in der oberen Erdkruste. Während einer Temperaturänderung auf Grund einer hydrothermalen Umwandlung oder regionalen niedrig-gradigen Metamorphose als Folge einer zunehmenden Versenkung bilden sich Phyllosilikatparagenesen, die Zeugnis einer Temperaturentwicklung sind. Sie helfen, die Bildung und thermische Entwicklung von Gebirgen, aber auch von hydrothermalen, kontaktmetamorphen Aureolen zu verstehen.
Lay summary

Inhalt und Ziel des Forschungsprojekts

Dieses Projekt untersucht die regionale, niedrig-gradige Metamorphose im Gebiet der Torres del Paine Intrusion (Südchile) und ihre Wechselwirkung mit der kontaktmetamorphen, hydrothermalen Aureole der Torres del Paine Intrusion. Das Ziel dieses Forschungsprojektes ist es, die Phyllosilikate zu bestimmen und die Temperaturentwicklung sowohl regional als auch in Beziehung zur kontaktmetmorphen Aureole besser zu verstehen. Zusätzliche Information zur Temperaturentwicklung wird aus der Bestimmung des Reflexionsvermögens von organischem Material gewonnen.

Wissenschaftlicher Kontext des Forschungsprojektes

Diese Projekt soll helfen, die zeitliche Temperaturentwicklung hydrothermaler Umwandlungen, die sich in Folge einer hydrothermalen Phase(n) während einer Kontaktmetamorphose gebildet haben und ihr Einfluss auf eine bereits gebildete regionale, niedrig-gradige Metamorphose zu verstehen.


Direct link to Lay Summary Last update: 20.01.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Timing and thermal evolution of fold-and-thrust belt formation in the Ultima Esperanza District, 51°S Chile: Constraints from K-Ar dating and illite characterization
Süssenberger Annette, Schmidt Susanne T., Wemmer Klaus, Baumgartner Lukas P., Grobéty Bernard (2017), Timing and thermal evolution of fold-and-thrust belt formation in the Ultima Esperanza District, 51°S Chile: Constraints from K-Ar dating and illite characterization, in GSA Bulletin.

Collaboration

Group / person Country
Types of collaboration
Dr. Julie Fosdick/Tucson Arizona United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Radovan Cerny/Uni Genf Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Dr. Sébastien Potel/La Salle France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Lukas Baumgartner/Uni Lausanne Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Richard Spikings/Uni Genf Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Rafael Ferreirro Mählman/TU Darmstadt Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Geological Society of America Talk given at a conference The zone of incipient 40Ar* loss: introducing a new concept of ar degassing behavior in a contact metamorphic setting. 26.11.2017 Seattle, United States of America Süssenberger Annette; Schmidt Susanne;
16th International Clay Conference Talk given at a conference Statistical analysis of chlorite compositional data in Cretaceous sediments of the Magallanes Basin, Chile 16.07.2017 Granada, Spain Schmidt Susanne; Süssenberger Annette;
16.International Clay Conference Talk given at a conference Monitoring the Ar retentivity of K/Ar illite fine fraction ages in the contact metamorphic aureole of the Torres del Paine intrusion (Chile). 16.07.2017 Granada, Spain Süssenberger Annette; Schmidt Susanne;
Geological Society of America Talk given at a conference CONTACT VS REGIONAL METAMORPHISM IN THE AREA OF TORRES DEL PAINE (SOUTHERN CHILE) – COMBINING RAMAN SPECTROSCOPY AND CLAY INVESTIGATIONS 27.09.2015 Denver, United States of America Schmidt Susanne; Süssenberger Annette;
Euroclay2015 Talk given at a conference DEFORMATION CONTROLLED LOW-GRADE METAMORPHISM IN THE PATAGONIAN FOLD-AND-THRUST BELT IN THE TORRES DEL PAINE AREA, CHILE (51° 30’ S): COMBINING K/AR, XRD AND O ISOTOPIC DATA 05.07.2015 Edingburgh, Great Britain and Northern Ireland Schmidt Susanne; Süssenberger Annette;
8th Mid-European Conference Talk given at a conference TRANSITION FROM REGIONAL TO CONTACT METAMORPHISM IN THE AREA OF TORRES DEL PAINE (SOUTHERN CHILE) – INSIGHTS 04.07.2015 Kosice, Croatia Süssenberger Annette; Schmidt Susanne;
Swiss Geosciece Meeting Poster DATING LOW GRADE DEFORMATION OF THE PATAGONIAN FOLD-AND-THRUST BELT IN THE TORRES DEL PAINE AREA, CHILE 51° 30’ S: FIRST RESULTS 21.11.2014 Fribourg, Switzerland Schmidt Susanne; Süssenberger Annette;


Abstract

The proposal requests funds for 36 months for two Ph.D. students to study the termal evolution in the Upper Jurassic to Tertiary sedimentary sequence in the Patagonian fold-and-thrust belt and the Magellanes Basin using clay mineral associations and carbonaceous material. The Cretaceous-Neogene Patagonian fold-thrust belt and the Magellanes foreland Basin in South America consist of a thick sequence (> 4000m) of turbidites, sandstones and clay rich layers which were deposited on a quasi-oceanic and continental crust. The stratigraphic sequence records the corresponding tectonic settings from an Upper Jurassic shallow marine to deep-water sedimentary system and up to a Tertiary shallow, deltaic and river depositional systems. The primary sedimentary features of the sequence are well studied, however, a profound analysis of the regional low-grade metamorphic/locally hydrothermal history related to the thermal development of the basin in response to thrusting, burial, exhumation and intrusive activity has not yet been studied in detail. This projects aims to analyze clay mineral associations and the rank or coalification of carbonaceous material in the stratigraphic record of a fault-thrust belt spanning a time period from Upper Jurassic to the Tertiary. The thermal evolution and the complex prograde and retrograde clay mineral associations related to burial, thrusting, overburden, source origin and to the hydrothermal activity of the well investigated intrusive Torres del Paine Complex will be studied using the illite and chlorite crystallinity techniques (“reaction progress”). In addition, the coalification of carbonaceous material in the various rock lithologies will be determined. It is anticipated to constrain a carefully selected suite of clay minerals by applying the K/Ar and/or Ar/Ar techniques. The obtained information will contribute to a better understanding of the thermal development of basins, fold-and-thrust belts, the source area of the sediments and the influence of hydrothermal fluids on the reaction progress of clay minerals and the coalification of organic matter.
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