The demise of the dinosaurs has been a fascinating topic with many different theories proposed. For many years the main belief was that it was probably volcanic activity that brought about the main extinction:

massive volcanic eruptions, which may have released climate-changing gases in the Spain-sized region known as the Deccan Traps, played a significant role.
https://edition.cnn.com/2020/01/16/world/dinosaur-extinction-volcanoes-asteroid-scn/index.html

The Deccan Traps is a large igneous province of west-central India. They are one of the largest volcanic features on Earth.

Because of its magnitude, scientists have speculated that the gases released during the formation of the Deccan Traps played a major role in the Cretaceous-Paleogene (K-Pg) extinction event (also known as the Cretaceous-Tertiary or K-T extinction). It has been theorized that sudden cooling due to sulfurous volcanic gases released by the formation of the traps and toxic gas emissions may have contributed significantly to the K-Pg, as well as other, mass extinctions.
https://en.wikipedia.org/wiki/Deccan_Traps

Luis, left, and his son Walter Alvarez, right, at the K-T [K-Pg] Boundary in Gubbio, Italy, 1981.
https://en.wikipedia.org/wiki/Alvarez_hypothesis

In the late nineteen seventies two scientists, Luis and Walter Alvarez were investigating some rocks in the K-Pg boundary layers and noticed high levels of iridium, an element that was very common in meteors and not that common on Earth. After checking similar layers in other locations and finding similar results they drew the conclusion that it may have been possible that a large meteor had slammed into the Earth at the K-Pg point or roughly 66 million years ago. The resulting destruction may have caused the extinction of the dinosaurs. It was a very novel theory and though destruction from space had been proposed prior to this, the Alvarez's were probably among the first to suggest some possible evidence from the rock record.

Point of impact: The Chicxulub crater at the Yucatan Peninsula of Mexico.

In 1980, a team of researchers led by Nobel prize-winning physicist Luis Alvarez, his son, geologist Walter Alvarez, and chemists Frank Asaro and Helen Vaughn Michel discovered that sedimentary layers found all over the world at the Cretaceous-Paleogene boundary (K-Pg boundary, formerly called Cretaceous-Tertiary or K-T boundary) contain a concentration of iridium hundreds of times greater than normal. Iridium is extremely rare in the Earth's crust because it is very dense and has the affinity for iron that characterizes the siderophile elements (see Goldschmidt classification), and therefore most of it sank into the Earth's core while the earth was still molten. The Alvarez team suggested that an asteroid struck the earth at the time of the Cretaceous-Paleogene boundary.
https://en.wikipedia.org/wiki/Alvarez_hypothesis

When first proposed by the Alvarez's it was not immediately accepted by the majority of Evolutionists and even met some derision. But over the intervening years Evolutionists have warmed to the hypothesis and currently the vast majority have accepted it, swinging away from volcanism:

"A lot of people have speculated that volcanoes mattered to K-Pg, and we're saying, 'no, they didn't," said Pincelli Hull, an assistant professor of geology and geophysics at Yale and lead author of the study, which published Thursday in Science.
"What our study does is take 40 years of research and adds a bunch of new research. It combines this in the most quantitative tests you can do and it really doesn't look like it (was the volcanoes)."

They found that at least 50% or more of the major outgassing from the Deccan Traps occurred well before the asteroid impact, and only the impact coincided with the mass extinction event.

"Volcanic activity in the late Cretaceous [period] caused a gradual global warming event of about two degrees, but not mass extinction," said Henehan
https://edition.cnn.com/2020/01/16/world/dinosaur-extinction-volcanoes-asteroid-scn/index.html

In March 2010, an international panel of 41 scientists reviewed 20 years of scientific literature and endorsed the asteroid hypothesis, specifically the Chicxulub impact, as the cause of the extinction, ruling out other theories such as massive volcanism.
https://en.wikipedia.org/wiki/Dinosaur_extinction

Several studies in 2020, like Hull et al. and Chiarenza et al. show quantitatively that the Cretaceous-Paleogene Mass Extinction about 66 million years ago was mostly a result of a meteorite impact (the Chicxulub impactor) and not a result of volcanism.
https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event

And further study using computer simulations showed that the meteor was quite capable of causing enough destruction to take the dinosaurs to extinction:

Within two minutes of slamming into Earth, the asteroid, which was at least six miles wide, had gouged a crater about eighteen miles deep and lofted twenty-five trillion metric tons of debris into the atmosphere. Picture the splash of a pebble falling into pond water, but on a planetary scale. When Earth's crust rebounded, a peak higher than Mt. Everest briefly rose up. The energy released was more than that of a billion Hiroshima bombs, ...
https://www.newyorker.com/magazine/2019/04/08/the-day-the-dinosaurs-died

A comet or an asteroid—we aren't sure which—collided with the Earth, hitting what is now the Yucatan Peninsula of Mexico. It was about six miles (ten kilometers) wide, or about the size of Mount Everest. It was probably moving at a speed of around 67,000 miles per hour (108,000 kilometers per hour), more than a hundred times faster than a jet airliner. When it slammed into our planet, it hit with the force of over 100 trillion tons of TNT, somewhere in the vicinity of a billion nuclear bombs' worth of energy. It plowed some twenty-five miles (forty kilometers) through the crust and into the mantle, leaving a crater that was over 100 miles (160 kilometers) wide. p.315.
The RISE and FALL of the DINOSAURS
A New History of Their Lost World, STEVE BRUSATTE. 2018.

Location in the Yucatan Peninsula in Mexico, near the town of Chicxulub. Note: circles may not be correct size for map.
https://en.wikipedia.org/wiki/Chicxulub_crater

Location in the Yucatan Peninsula in Mexico, near the town of Chicxulub. Note: circles may not be correct size for map.
https://en.wikipedia.org/wiki/Chicxulub_crater

Location in the Yucatan Peninsula in Mexico, near the town of Chicxulub. Note: circles may not be correct size for map.
https://en.wikipedia.org/wiki/Chicxulub_crater

This comet is 10 kilometres in diameter, taller than Mt Everest or larger than the Martian moon Deimos. This harbinger of destruction is travelling at a speed of more than 100000 kilometres per hour and its energy of motion has the destructive force of 100 million hydrogen bombs. p.163.
Flying Dinosaurs: How fearsome reptiles became birds, John Pickrell, 2014.

The rock was an asteroid, essentially a small planet or a large meteorite. It measured up to 7 kilometres (4 miles) across, the size of Manhattan, and as it drove into the Earth's crust, just off the coast of the Yucatan peninsula in modern Mexico, it blasted out a deep hole and caused shattering of the crust to an even greater depth, and over a much wider radius, than the crater itself (see pl. xix).
The impact had a kinetic energy of more than 10 billion megatonnes. This is a thousand times the amount of energy contained in all the world's nuclear weapons arsenals. p.254.
The Dinosaurs Rediscovered, MICHAEL J. BENTON, 2019.

The Chicxulub impactor had an estimated diameter of 11-81 kilometers (6.8-50.3 mi), and delivered an estimated energy of 21-921 billion Hiroshima A-bombs (between 1.3x10²⁴ and 5.8x10²⁵ joules, or 1.3-58 yottajoules). For comparison, this is ~100 million times the energy released by the Tsar Bomba, a thermonuclear device ("H-bomb") that remains the most powerful human-made explosive ever detonated, which released 210 petajoules (2.1x10¹⁷ joules, or 50 megatons TNT).
https://en.wikipedia.org/wiki/Chicxulub_crater

They definitely had found something destructive enough to cause the extinction of the dinosaurs. And the simulated scenarios suggest it was quite a deadly impact:

Within two minutes of slamming into Earth, the asteroid, which was at least six miles wide, had gouged a crater about eighteen miles deep and lofted twenty-five trillion metric tons of debris into the atmosphere. Picture the splash of a pebble falling into pond water, but on a planetary scale. When Earth's crust rebounded, a peak higher than Mt. Everest briefly rose up. The energy released was more than that of a billion Hiroshima bombs, ...

Earth itself became toxic. When the asteroid struck, it vaporized layers of limestone, releasing into the atmosphere a trillion tons of carbon dioxide, ten billion tons of methane, and a billion tons of carbon monoxide; all three are powerful greenhouse gases. The impact also vaporized anhydrite rock, which blasted ten trillion tons of sulfur compounds aloft. The sulfur combined with water to form sulfuric acid, which then fell as an acid rain that may have been potent enough to strip the leaves from any surviving plants and to leach the nutrients from the soil.
https://www.newyorker.com/magazine/2019/04/08/the-day-the-dinosaurs-died

Then acid rain, formed from the nitrous oxide and sulfates clogging the atmosphere, began to hammer down on the surface, killing plants and animals and even dissolving rocks. This rain would have been as corrosive as battery acid and its most devastating effect would have been to destroy the shells of small marine organisms. p.165.
Flying Dinosaurs: How fearsome reptiles became birds, John Pickrell, 2014.

In October 2019, researchers reported that the event rapidly acidified the oceans producing ecological collapse and long-lasting effects on the climate, and, accordingly, was a key reason for the Cretaceous-Paleogene extinction event.
https://en.wikipedia.org/wiki/Chicxulub_impactor

The effects of the sulphuric acid on the climate was so severe that the computer simulations found it would have taken at least 30 years for the global climate to recover.
https://www.siliconrepublic.com/innovation/dinosaurs-extinction-simulation

An enormous tactical blunder

Of course going public with all of this was an enormous tactical blunder. The calculated destruction was just too large. Some evolutionists even spoke out against it:

What do we do with these impact scenarios? Naturally, we compare them with the evidence from the geological record. Birds, tortoises, and mammals live on land and breathe air: the evidence from the K-T boundary shows that they survived the K-T boundary event. Therefore they and the air they breathed weren't set on broil for several hours. To put it simply, these scenarios did not happen.
History of Life, Richard Cowen, 2000.
https://ucmp.berkeley.edu/education/events/cowen2b.html

Birds, Tortoises, Mammals: example 2 extant monotremes.

Birds, Tortoises, Mammals: example 2 extant monotremes.

Birds, Tortoises, Mammals: example 2 extant monotremes.

The survival of birds is the strangest of all the K-T boundary events, if we are to accept the catastrophic scenarios. Smaller dinosaurs overlapped with larger birds in size and in ecological roles as terrestrial bipeds. How did birds survive while dinosaurs did not? Birds seek food in the open, by sight; they are small and warm-blooded, with high metabolic rates and small energy stores. Even a sudden storm or a slightly severe winter can cause high mortality among bird populations. Yet an impact scenario, according to its enthusiasts, includes "a nightmare of environmental disasters, including storms, tsunamis, cold and darkness, greenhouse warming, acid rains and global fires." There must be some explanation for the survival of birds, turtles, and crocodiles through any catastrophe of this scale, or else the catastrophe models are wrong.
History of Life, Richard Cowen, 2000.
https://ucmp.berkeley.edu/education/events/cowen3b.html

Birds, Turtles, Crocodiles.

Birds, Turtles, Crocodiles.

Birds, Turtles, Crocodiles.

The theory is now widely accepted by the scientific community. Some critics, including paleontologist Robert Bakker, argue that such an impact would have killed frogs as well as dinosaurs, yet the frogs survived the extinction event.
https://en.wikipedia.org/wiki/Chicxulub_crater

Frogs

Frogs

Frogs

there was no extinction in the insects, a group that should have been the most sensitive to a global catastrophe predicted by the impact advocates. ... Nor do the birds show much extinction, even though they too should have been vulnerable (Chiappe 1995). ...
some extreme impact scenarios postulate extensive acid rain bathing the earth for a long time after the impact. However, the survival of amphibians shows that this is simply a fantasy (Weil 1984). Amphibians breathe through their porous skins and are sensitive to slight changes in the acidity of their watery habitat. Even now, the slightly more acidic conditions of lakes and ponds due to human-induced acid rain are causing frogs and salamanders to die out rapidly. If the entire earth had been subjected to a huge acid bath, there simply would not be a frog or salamander alive on the earth today. p.38.
After the Dinosaurs, Donald R. Prothero, 2006.

Frogs, Salamanders

Frogs, Salamanders

Frogs, Salamanders

So just how would the birds have gone with all of this happening?

Bird: Canary. Very vulnerable to airborne poisons!

Canaries were used "in coal mines to detect carbon monoxide and other toxic gases before they hurt humans". "Canaries, like other birds, are good early detectors of carbon monoxide because they're vulnerable to airborne poisons."
https://www.smithsonianmag.com/smart-news/story-real-canary-coal-mine-180961570/

Birds are vulnerable to airborne poisons!!

Since birds are vulnerable to airborne poisons it is very clear that they should have gone completely extinct along with the dinosaurs when the meteor supposedly impacted our planet 66 million years ago. In fact all susceptible species like birds, salamanders, and frogs, probably would have gone extinct even before the dinosaurs!

It makes sense that the most susceptible species would be the very first to go. And that means birds, salamanders, and frogs!

And Evolutionists are completely at a loss how to explain the survival of the birds:

Of the many great dinosaurian lineages, only the birds made it through the mass extinction at the end of the Cretaceous - but nobody is quite sure why. p.162.
Flying Dinosaurs: How fearsome reptiles became birds, John Pickrell, 2014.

Early members of the palaeognath lineage survived (the group that includes ostriches and emus), as did members of the wildfowl and gamebird lineage, as did members of the lineage that led to seabirds, hawks, perching birds, and so on.
Why these bird groups survived when other dinosaur groups didn't is a good question, and one that hasn't been answered satisfactorily. p.208.
Dinosaurs: How they lived and evolved. Darren Naish & Paul M. Barrett, CSIRO Publishing, 2018.

Simply a Fantasy

Of course there is no answer. If we accept the Alvarez Hypothesis, then the birds should have gone extinct with the dinosaurs, along with the salamanders and frogs. So just what conclusion can we draw from this? Actually, one of the dissenting Evolutionists has given us the answer:

some extreme impact scenarios postulate extensive acid rain bathing the earth for a long time after the impact. However, the survival of amphibians shows that this is simply a fantasy (Weil 1984). p.38.
After the Dinosaurs, Donald R. Prothero, 2006.

Some species that should be extinct!

Some species that should be extinct!

Some species that should be extinct!

If the extreme impact scenarios are simply a fantasy, then so is the evidence supporting the Alvarez Hypothesis. This includes rocks, and fossils [including embedded/ingested tektites from the impact fallout], and strangely, even a 150 km wide 20 km deep crater! The crater was discovered in the late 1970s though not recognized as such until 1990. Subsequent dating linked it with the Alvarez Hypothesis and the dinosaur Extinction Event.

The Chicxulub crater is an impact crater buried underneath the Yucatan Peninsula in Mexico. Its center is located offshore near the town of Chicxulub, after which the crater is named.

The crater is estimated to be 150 kilometers (93 miles) in diameter and 20 kilometers (12 miles) in depth, well into the continental crust of the region of about 10-30 kilometers (6.2-18.6 miles) depth.

The crater was discovered by Antonio Camargo and Glen Penfield, geophysicists who had been looking for petroleum in the Yucatan Peninsula during the late 1970s. Penfield was initially unable to obtain evidence that the geological feature was a crater and gave up his search. Later, through contact with Alan Hildebrand in 1990, Penfield obtained samples that suggested it was an impact feature. Evidence for the impact origin of the crater includes shocked quartz, a gravity anomaly, and tektites in surrounding areas.

The age of the rocks marked by the impact shows that this impact structure dates from roughly 66 million years ago, the end of the Cretaceous period, and the start of the Paleogene period. It coincides with the K-Pg boundary, the geological boundary between the Cretaceous and Paleogene. The impact associated with the crater is thus implicated in the Cretaceous-Paleogene extinction event, including the worldwide extinction of non-avian dinosaurs.
https://en.wikipedia.org/wiki/Chicxulub_crater

But our conclusion of all of this being simply a fantasy throws a complete spanner into the works. Just what does it mean if all of this is simply a fantasy?

1. The rocks can no longer be considered to be a reliable record of the past of this planet!
2. The fossils can no longer be considered to be a reliable record of the past life of this planet!
3. The 150 km wide 20 km deep Chicxulub crater in the Yucatan Peninsula in Mexico can no longer be considered to be a reliable record of a supposed meteor impact that occurred 66 million years ago and which caused the extinction of the dinosaurs!

And just what does all this mean?

No meteor impacted this planet 66 million years ago causing some supposed extinction of the dinosaurs.

A complete fabrication

In fact if the fossils are not a reliable record of past life then the dinosaur fossils are in question. All of them! From this we can conclude that the non-avian dinosaurs never existed as living breathing creatures and that none of them ever lived or walked on this planet at any time in the past.

But the fossils exist so how can this be? Simply that they are not fossil remains, but fossil constructions. When this world came into existence it appears that something like many thousands of feet of rock layers full of all sorts of interesting stuff were added. All a fabrication or a construction.

And the interesting question is just who or what could have done this?

A far more interesting question is just who or what would have the actual power to be able to do this!

As a Christian I have absolutely no problem with these questions. None whatsoever.

But I think the Evolutionists are in trouble. Real big trouble.

This is an act of creation and the only thing that could do that is a deity.

And that is completely outside the scope of Evolutionary Science.

But not Christianity.

The level of detail that has been built into these added rock layers by this deity is far beyond the comprehension of mortal minds!