An article in Physics Today (Sept, 2014, page 32) by David King and Mark Boslough, describes what happened when the Chelyabinsk meteor exploded in an airburst event over Russia in 2013. The article can be acessed in full at http://scitation.aip.org/content/aip/magazine/physicstoday/article/67/9/... (or http://dx.doi.org/10.1063/PT.3.2515). Mark Boslough has been criticised by some commenters over at http://cosmictusk.com for his treatment of the Younger Dryas impact theory.
At https://en.wikipedia.org/wiki/Milutin_Milankovitch ... there is some surprising information about the man a lot of catastrophists regard as an arch villain of unifomitarianism, infamous for his exercise in mathematics that worked out the three cycles in the orbital history of the Ice Ages. In fact, keying in his name into your search engine reveals him to be an altogether interesting fellow that deserves a closer look.
A good take on cosmic impacts and any kind of catastrophe can be found by going to https://cometstorm.wordpress.com/a-different-kind-of-climate-catastrophe/ ... Dennis Cox is an ex military man who expanded on his experience of the effects of bomb blasts to research into cosmic air blasts and has extensively used Google Earth to seek out geological oddities - and then got out his walking boots to go and investigate the anomalies on the ground. One of these oddities is the occurrence of ignimbrites. These are according to mainstream views the result of lava outflows - or volcanism.
At www.livescience.com/52017-catastrophic-volcanoes-caused-biggest-extincti... ... geologists working in Siberia (Russian and American) are blaming volcanics for the extinction event at the Permian boundary, a somewhat obvious discovery as they were looking at the Siberian Traps (a huge outpouring of basalt lava). What caused the volcanics is another matter.
Thunderbolts this month also has a piece by one Andrew Hall, described as an engineer and writer. He is clearly somebody with his feet on the ground.
The Ryan and Pitman claim (back in 1997) that the Black Sea was flooded when a rock sill at the Bosporus was breached and salt water from the Mediterranean gushed into the freshwater lake system of the Black Sea and changed its composition for ever, dating the event around 8000 years ago (or slightly earlier) caused a bit of a stir, to put it mildly. The response was multi-pronged - even the Creationists were against the proposal.
The ancient geography of the Mediterranean Basin has been profoundly changed by sea level rise following the Late Glacial Maximum. This global event led to the retreat of coastlines as a result of water locked up as ice - or that is the way it is usually explained and visualised by scientists and lay-people alike. Frozen water led to the emergence of vast areas of continental shelf and islands that are now submerged features on the sea bed.
Keenan describes the 2300BC event as perhaps the most significant event in the Holocene - since the end of the Ice Ages. Presumably he means the Younger Dryas event rather than the end of the Late Glacial Maximum. This appears to diminish the 6200BC event on his part - but then again it is not exactly high on everyone's radar.
At http://arxiv.org/abs/physics/9908052v2 ... this is a pre-publication review of a paper co-authored by Douglas Keenan. The title is, 'The Three Century climatic upheaval at c2000BC, and regressed radiocarbon disparities' ... which may set the cat among the pigeons (over C14 dates) and shine a light on an interesting episode in history.
At http://phys.org/print358679794.html ... we have one of those classic model studies that claim they have produced a 'cutting edge statistical analysis' which shows humans were responsible for the mass die-offs of animals over the last 70,000 years - which includes sabre toothed tigers as well as mammoths and woolly rhinoceros, giant sloths and giant armadilloes etc. Quite apart from having giant appetites, why would humans kill off all the prey species - out of devilment?