Nördlingen - „Impact Processes in the Solar System“

Monday

 

09:00 – 09:15

General remarks

09:15 - 10:00

Impacts processes in the Solar System

 

(Alex Deutsch, Kai Wünnemann)

 

General Overview: fundamental processes in the solar system? What can we learn

 

from the crater record? Why does impact cratering play a central role in TRR170

10:00 - 11:00

Principles of shock waves

 

(Natasha Artemieva)

 

Hugoniot equations, planar impact approximation, unloading and post-shock

 

temperatures, contact and compression stage

11:00 - 11:15

Coffee break

11:15 – 12:30

Impact cratering: Excavation processes

 

(Gareth Collins, Natasha Artemieva)

 

Excavation and ejection of matter, scaling laws to predict crater size, cratering

 

experiments and modelling

12:30 - 14:00

Lunch break

14:00 – 15:00

Impact cratering: Crater Collapse (1)

 

(Gareth Collins, Kai Wünnemann)

 

Crater collapse, formation of simple and complex craters

15:00 - 16:00

Impact cratering: Crater Collapse (2)

 

(Gareth Collins, Kai Wünnemann)

 

Basin formation, ejecta deposition, geophysical signatures

16:00 - 16:15

Coffee break

16:15 - 18:00

Exercise

 

(Gareth Collins, Kai Wünnemann, Natasha Artemieva)

 

Estimate shock pressure, crater size, ejecta distribution for a given impact scenari)

19:00-21:00

Icebreaker

 

Ries Krater Museum, Eugene-Shoemaker-Platz 1, Nördlingen

 

Tuesday

 

09:00 - 10:15

Impactites – shatter cones & rock types

 

(Alex Deutsch)

 

Shatter cones, breccias, melt rocks, ejecta deposits, classification schemes

10:15 - 10:30

Coffee break

10:30 - 11:30

Impact ages - Isotopic dating techniques

 

(Thomas Haber)

 

An Overview over the different dating methods used to determine absolute ages of

 

impact melt rock with a focus on (1) when best to use which method, (2) how to

 

evaluate the quality of age data and (3) some common problems with the different

 

methods and how to avoid them.

11:30 - 12:30

Geochemical tracing of impactor material – the fate of the projectile

 

(Philipp Gleissner)

 

Method overview (isotopic systems, siderophile elements, potentials and

 

limitations); case studies of terrestrial and lunar craters; how to determine highly

 

siderophile element ratios of lunar impactites? The regression method and its many

 

problems, composition of material accreted late to the lunar surface

12:30 - 14:00

Lunch break

14:00 - 15:30

Dating of planetary surfaces by crater counting technique

 

(Harald Hiesinger)

 

Production function, chronology function, relative and absolute ages, caveats and

 

limitations of crater counts

15:30 - 15:45

Coffee break

15:45 - 18:00

Exercise: Crater counting

 

(Harald Hiesinger)

 

Practical exercise of determining relative and absolute model ages from CSFD

 

measurements

18:00 – 18:30

Visit of drill core repository and impactite collection

 

Cores of the Forschungsbohung Nördlingen with clastic breccias, suevites

 

Wednesday

 

09:00 - 10:00

Geology of impact craters

 

(Michael Poelchau)

 

Structural geology at terrestrial examples

Group A:

 

10:00 – 11:00

Shock metamorphism

 

(Alex Deutsch)

 

Introduction to the practical microscopic analysis of shock effects in

 

terrestrial impactites, type of shock effects in rock-forming minerals

11:00 – 12:00

Shock and brecciation on meteorite parent bodies

 

(Addi Bischoff, Mike Zolensky)

 

Meteorite classification and frequency of different types; Basic shock effects

 

in meteorites (e.g., based on Stöffler et al., 1991); Characteristics of breccias

 

(monomict, polymict, accretionary, and Regolith breccias; impact-induced

 

fragmentation, mixing, and re-lithification); Brecciated differentiated

 

meteorites (e.g., ureilites, HEDs, aubrites); Brecciated chondrites (all types);

 

Formation of 2. generation meteorite parent bodies by re-accretion (e.g.,

 

Almahata Sitta, Kaidun, CM-chondrites)

12:00 – 13:30

Lunch break

13:30 – 18:00

Practical: Microscopic analysis of shock effects

 

in meteorites and impactites

 

(Addi Bischoff, Mike Zolensky, Alex Deutsch)

15:30 – 15:45

Coffee break

Group B:

 

10:00 – 10:15

Pick up of lunch bags and get on buses

10:15 – 18:00

Field trip to Nördlinger Ries

 

Lunch at first stop

 

(Michael Poelchau, Gisela Pösges, Harald Hiesinger, Kai

 

Wünnemann)

18:00 – 18:30

Visit of drill core repository and impactite collection

 

Cores of the Forschungsbohung Nördlingen with clastic breccias, suevites

 

Thursday

 

10:00 – 11:00

Shock and Brecciation on Meteorite Parent Bodies

 

(Addi Bischoff, Mike Zolensky)

 

Meteorite classification and frequency of different types; Basic shock effects

 

in meteorites (e.g., based on Stöffler et al., 1991); Characteristics of breccias

 

(monomict, polymict, accretionary, and Regolith breccias; impact-induced

 

fragmentation, mixing, and re-lithification); Brecciated differentiated

 

meteorites (e.g., ureilites, HEDs, aubrites); Brecciated chondrites (all types);

 

Formation of 2. generation meteorite parent bodies by re-accretion (e.g.,

 

Almahata Sitta, Kaidun, CM-chondrites)

11:00 – 11:15

Coffee break

11:15 – 12:30

Practical: Microscopic analysis of shock effects

 

in meteorites and impactites

 

(Addi Bischoff, Mike Zolensky, Alex Deutsch)

12:30 – 14:00

Lunch break

14:00 – 17:00

Practical: Microscopic analysis of shock effects

 

in meteorites and impactites

 

(Addi Bischoff, Mike Zolensky, Alex Deutsch)

15:30 – 15:45

Coffee break

Group A:

 

09:00 – 09:15

pick up of lunch bags and get on buses

09:15 – 17:00

Field trip to Nördlinger Ries

 

Lunch at first stop

 

(Harald Hiesinger, Gisela Pösges, Kai Wünnemann)

17:15 – 18:00

Final discussion and visit of drill core repository

 

Friday

 

Departure

 

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