Want to talk about a pebble in September, how about this rock

In my research on cycles one of my lists was about Impacts. With all the “Doom porn” flooding the net I looked at it again. Unfortunately my list gives crater sizes and not asteroid/meteor sizes. The different criteria needed to determine the size of an impact with a meteor size is difficult enough and when still up-there flat-out impossible. The “Doom porn brigade” pinned it down to a 2,4km rock, so let’s say depending on its speed and makeup we look at anything from a 10km crater upwards if there is no break-up in the atmosphere. Now our distant ancestral families come from 3+ million years ago and some are still around, so let’s look the larger than 10km craters less that 5 million years ago

Confirmed
Air-burst
Unconfirmed

20km – 99km Crater = *
100km – 249km Crater = **
250km + above Crater = ***
(Body size; Crater size)

5 million years ago – Karla, Russia ( ?km; 10km)
3,5 million years ago – El'gygytgyn, Russia ( ?km; 18km)
1,07 million years ago – Bosumtwi, Ghana ( ?km; 10.5 km)
900,000 years ago – Zhamanshin, Kazakhstan ( ?km; 14km)
100,000 – 10,000 years ago*** – Hickman Crater, Newman, Western Australia ( ?km; 270km)
5,000 BC*** – Zerelia West, Thessaly, Greece ( ?km; 250km)
5,000 BC** – Zerelia East, Thessaly, Greece ( ?km; 150km)
3,000 BC* – Burckle, Indian Ocean ( ?km; 30km)
1490-April 4[color= teal]** – Qìngyáng district, Shaanxi Province, China (?km; 100km area affected) (unconfirmed)
1,400 BC – Mahuika, offshore of New Zealand ( ?km; 20km)
1908-June 30* – Northwest of Vanavara, Yeniseysk, Russia ( ?km; ?m)

Now you can read about the rock
3,26 billion years ago*** – Barberton Greenstone Belt, South Africa (37-58km; 500km)
Rock

Little time today , I was floored by the impacts on Jupiter. The string of pearls comets that slammed into the atmosphere there raised huge fireballs, producing blotches on the surface bigger than the earth in some cases.

The objects weren't that big (couple of KM?), and they didn't hit solid ground or ocean.

Still awesome display of celestial power.

The Russian meteor showed even small objects can wreak enormous havoc without ever impacting the ground.

Close enough for horse shoes and hand grenades.

a reply to: ICycle2





This should be of some interest regarding the "Rock"


www.newgeology.us...

a reply to: ICycle2

I don't have anything to contribute other than nice thread!