And it came to pass after seven days, that the waters of the flood were upon the earth.
Genesis 7:10
"Two separate studies claim massive tsunamis and earthquakes from 
an
asteroid impact profoundly affected the rock record.
One research team
modeled a 1.5 km (1 mile) high water wave that propagated across the
ocean following the Chicxulub impact, causing sweeping erosion across
the ocean floor. Another report asserted the same impact
generated a mega-earthquake that caused twisted and contorted
sedimentary layering around the world. However, claims of a massive dinosaur-killing impact in the Yucatan Peninsula are not compelling. Instead, these global phenomena are better explained by the global Flood described in Genesis.
A 9-mile wide asteroid hitting the Yucatan Peninsula (near Chicxulub)
at the end of the Cretaceous has been used by conventional
paleontologists to explain the so-called K-Pg extinction event. However,
after examining the wells and the cores drilled into the Chicxulub
site, there is not nearly enough melted rock to justify a large impact,
nor is there much iridium found at the site. Iridium is
supposed to be a tell-tale sign of asteroid impacts, yet only two wells
at the site have found any iridium at all.
Q: Did the so-called ‘smoking
gun’ leave no smoke, or was the impactor much smaller than claimed?
The K-Pg ‘extinction’ is not really an extinction at all. It is merely
the level in the rocks where many animals (including the dinosaurs) and
even many plants disappear from the fossil record.
It is true that many
animals do disappear in the fossil record at the K-Pg, but, like the
coelacanth fish, many are still found living today. The fossil record is
actually a record of continuous inundation by the rising waters of the
global Flood. As the water rose, it wiped out entire ecosystems, giving
the appearance of extinction events. Asteroid impacts and extinction
events are not necessary to explain the fossil record." ICR