This week we start an accidental two-part show on catastrophic sedimentation, John’s drone experiments, and a revisit of some stories from the past. Don’t miss this not so short summer short!
Catastrophism
- Wikipedia article on catastrophism
- Originated with Bishop J. Usher
- Mountains, etc. were formed by unknowable, quick cataclysms…
Uniformitarianism
- Wikipedia article on uniformitarianism
- James Hutton - 1795 Theory of the Earth
- A Short History of Nearly Everything - Bill Bryson
Turbidites
- Lab experiments
- Bouma Sequences
- Density-flow, not tractional or frictional
- Wikipedia article with nice pictures
Landslides et al.
- Can be triggered by earthquakes, volcanoes, rain, etc.
- Lahars are also density flows
- Wikipedia article on landslides
- Video of huge lahar in Semeru
Fun Paper Friday
This week we get ready for one of our future topics by talking about bolides and airblasts. Also good timing with the perseid meteor shower!
Kring, D. A. (1997). Air blast produced by the Meteor Crater impact event and a reconstruction of the affected environment. Meteoritics & Planetary Science, 32(4), 517–530.
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin