The Puzzler, on 28 October 2010 - 03:54 PM, said:
Yes, I got something from that big list, but you have posted about it already:
Siim Veski·Atko Heinsalu· ValterLang·
The age of the Kaali meteorite craters and the effect
of the impact on the environment and man:
evidence from inside the Kaalicraters, island of Saaremaa, Estonia
Received: 30 October 2003/Accepted: 6June2004/ Published online: 17July2004
Conclusions
1.AMS dating of terrestrial macrofossils from the
deepest part of the meteorite impact crater-lake at
Kaali, island of Saaremaa, Estonia places the age of
the impact at 1690 - 1510 B.C. The age agrees with
previous research inside the crater, but is about 1000
years older than revealed from impact marker-horizon
radiocarbon dating in a contemporaneous peat se-
quence, yet those two signatures reflect the same im-
pactevent. Themicrospherules discovered by Raukas
et al.(1995) could indicate another much older event
2.Chemical, pollen and diatom analyses from the bottom
sediments of Kaalij
sedimentation of loose crushed dolomite debris took
place in a shallow lake and that there seem to be no
hiatuses in the sedimentation. Consequently the low-
er most sediment contact of Kaalij
radiocarbon dating of the impact event.
3.Biostratigraphic material is difficult to interprete in
terms of impact age,but pollen grains of Secale and
Picea in the bottom sediments of Kaalij
that the impact was not earlier than 3800 B.C.
4.Archaeological evidence on the crater slopes points to
ceremonial activity since 700-200 B.C., and the
structure of the main impact crater is mimicked in
nearby archaeological sites. Some other evidence as
well points towards the importance of meteorite im-
pacts to prehistoric societies.
not connected with the Kaali impact.
http://www.gi.ee/~veski/10915.pdf
"Themicrospherules discovered by Raukas et al.(1995) could indicate another much older event"...
If a much older event happened nearby, then we should maybe start looking for a comet swarm that showed up in the solar system with some kind of regular and stable orbit.
I think Cormac already posted about other, nearby impacts.
EDIT:
Yes he did:
"There are two other impactor areas within relative proximity to the Kaalijarv Crater. These are the Ilumetsa Crater c.4600 BC in Estonia and the Morasco Craters c.3000 - 1500 BC in Poland.
cormac"
It suggests an orbit of 1500 years: 1500 BC - 3000 BC - 4600 BC - 6100 BC?? - 7600 BC.
Hmm..
.
Edited by Abramelin, 29 October 2010 - 10:46 AM.