A creationist is someone who believes that the universe, and particularly Earth and its biodiversity, is the creation of God who sustains it every moment by the word of his power. An old-earth creationist is someone who believes that God's creation has been around for a few billion years. Evolution is a scientific explanation of the origin of species by descent with modification from a common ancestor. Therefore, an evolutionary creationist is basically an old-earth creationist who accepts evolution. Do Christians have to choose either the scientific explanation of human reproduction or the theological explanation that God knits us together in the womb? Or can Christians affirm both as true? Same thing applies here.
DS, maybe this will help. The passage 2 Peter 3 as well as other evidence, can suggest a structure inbetween: that while the universe may be old, the earth, and certainly its creation week are recent. See '
ekpalai' "from of old" vs. '
sunestosa' "formed" (like pottery) for earth.
1:2 says the earth was formless and void, and the chapter shows it being 'redeemed' to be formed and filled. But the expression 'tohu wa-bohu' is elsewhere used to refer to a city that was destroyed, punished. This raises interesting prospects for what happened before the creation week. The pottery analogy means the materials were there...
Of course, it means you will have to put aside the naturalistic mind--that there are only natural causes and effects.
As for other sources, I heard Dr. Giem, an astro geologist, say in 2015, that Saturn's rings and Pluto's mountains are ice and cannot last MYs. This whole system actually shows sign of a collision or explosion cratering most of its object. Not the kind of thing that settles nicely with quiet sleepy gradualism. He said he thought the universe was old but not so our solar system. On earth, collagen also cannot last long. Salt water, same.
Back in space: comets cannot last longer than 10K, as I recall. This has led to a bizarre belief about a zone at the edge (how convenient--we can hardly see it or them) and they randomly come our way for no reason.
Velikovsky predicted that Viking would find 'hot' readings on Jupiter etc. It did. Instead of changing its beliefs, NASA humiliated him.
One other Biblical clue has to do with the wild world of principalities and entities, so hang on: both 2 Peter 2 and Jude refer to areas of space as 'the blackness of darkness' and as 'prisons' for evil superhuman entities. Peter even borrows '
tartarus' from the Greek
Deucalion about the Titans' prison.
This last (prisons) has caused me to ask if earth is a renovated prison, for it started as dark, lifeless, and there are some references to confined beings 'in the depths' even cities.
I am aware that there are also some young-
universe evidences: the S shape of many galaxies implies recentness; MYs would result in blurred concentricity.