A SHORT LIST OF KNOWN AND SUSPECTED HISTORICAL IMPACTS
AS OF JANUARY, 2002

Most, but not all, of the impact events listed here await detailed confirmation by field geologists; those impacts confirmed by field studies are indicated by the lack of an accompanying "?". Known impacts which resulted in no or few deaths are indicated by "miss". Detailed information, as well pointers to internet sites, and the current state of research into each separate impact event may be found in the Cambridge Conference archives maintained by Bob Kobres at http://abob.libs.uga.edu/bobk/cccmenu.html.

CLASS 8:
"A collision capable of causing localized destruction.
Such events occur somewhere between once per 50 years and once per 1000 years."

Suspected and Known:
ca. 1584 BCE - Destruction of Hittite forces under T'e Hantilish (Joshua impactor)?
ca. 520 BCE - Destruction of Etruscan capitol city of Volsinii?
ca. 1 BCE - Brenham, Kansas
ca. 679 CE - Destruction of Colingiham Monastery?
ca. 800 CE - Impact in Baltic and death by local tsunami?
ca. 800 CE - Tunguska type impact at Key Marco, Florida?
ca. 1000 CE (give or take a hundred years) - destruction of major Native American center
along the Saint Lawrence River?
ca. 1321-1368 AD Erh River fall in China?
1450 CE - miss in Wabar, Saudi Arabia
1490 CE - Ch'ing-yang fall kills over 10,000 (possibly hail)?
1868 CE - miss near Pultusk, Poland
1908 CE - miss (2 dead) in Tunguska, Russia
1930 CE - miss in jungle of Brazil
1947 CE - miss at Sikhote Ailin in Kamchatka, Russia
1972 CE - miss in South West Pacific

CLASS 9:
"A collision capable of causing regional devastation.
Such events occur between once per 1,000 years and once per 100,000 years."

Suspected and Known:
ca. May 10, 2807 BCE - Masse sets this as the date of the Indian Ocean impact and resulting tsunami?
ca 1150 BCE - Atlantic impact mega-tsunami devastates coastal Central and North America?
ca. 300 BCE - Destruction of Ainu? Jomon ends in southern Japan, appearance of Yayoi culture
ca. 500 CE - Impact tsunami hits western Australia
580 CE - Destruction of Bordeaux region and city of Orleans?
585 CE - Destruction of "two islands in the sea"?
ca. 750 CE - Great Raft formation, Louisiana, but unknown if caused by impact, hurricane, or methane hydrate explosion
ca. 1200 CE - Bald Mountains impact event leads to migration of Cherokee into devastated area?
ca. 1500 CE - Australian Great Wall of Water, with collapse of Polynesian megalithic cultures on Ponhpei and elsewhere (confirmed)

CLASS 10:
"A collision capable of causing global climatic catastrophe.
Such events occur once per 100,000 years, or less often."

Suspected and Known:
ca. 3114 BCE - Atlantic impact; Stonehenge I constructed, Mayan Calendar begins,
tsunami leading to flood myths (Battle of Titans?) ?
ca. 2345 BCE - Ullikummi cometary impactor pretty much wipes out Hurrians;
either climate shift occurs at same time, or dust loading leads to climate collapse and global starvation
ca. 2345 BCE - Incineration of Harrapan city of Mohenjo Daro, India; by fragment of same comet?
ca. 2100 BCE - Rio Cuarto impact, climatic collapse, global starvation
(impact confirmed, not date)
ca. 1160 BCE - General migration in eastern Mediterranean,
following report by observor from some distance away of loud noise and rush of air?
ca. 536 CE - Dust loading leads to sub-Roman times becoming sub-Roman. Global climate collapse and starvation. Possible combination of volcanic and cometary dust

Information on both tsunami and airburst impact events affecting the Maori of New Zealand is currently undergoing analysis by P... S... I have also been informed by R... W... that initial data on historical impact events in Africa will be published in the very near future.