How to approach struggling YEC families?

[Paraleptopecten (Timothy Campbell)]

@adamjedgar

this is consistent with a flood/post flood model put forward by YEC movement.

How can a flood or series of brief floods make this?

@Paraleptopecten

The southeastern US has something like 40 distinct fossiliferous layers (not all in the same spot, but you can tell what order they are in from comparing hundreds of sites), varying in their constituents as you move both horizontally and vertically. They are in a very clear sequence, based on the fossils contained. As an example for some of the relevant layers: The Lower Goose Creek Limestone has an extinction rate in the mollusks of 83%; the Upper Goose Creek Limestone, 82%; Raysor Marl, 80%; Darlington beds, 78%, Elizabethtown beds, 68%; lower Waccamaw Formation, 65%; upper Waccamaw Formation, 56%; Bermont formation, 15%; Wando Formation 0%. You can also look at specific types of fossils, and where they are found in the layers.

or this?

@Paraleptopecten

the SC Rock Goretown Mine has the following stratigraphy:

a few feet of oxidized, partially leached upper Waccamaw Formation (the yellower layer).

2-10 feet of upper Waccamaw Formation unconsolidated shell-sand (the sloped, paler layer).

unconformity

About 12 feet of very hard (a lot of calcite holding it together), aragonite leached Goose Creek Limestone (the more vertical, darker layer).

unconformity

Pee Dee Formation clayy limestone, which contains dinosaur bones elsewhere (about 3-4 feet below the road here).

or this?

@Paraleptopecten

A generalized sequence:

Wando Formation and equivalents (Milankovitch highs in last ~200 kya) Shelly sand
Canepatch Fm. and equivalents (~300 kya-500 kya) Shelly sand
James City Fm., Ft. Thompson Fm., and equivalents (~700 kya-1.2 Mya) Shelly sand
Bermont Fm. and equivalents (~1.4-1.6 MYA) Shell hash with sand

Faunal Turnover (<10% extinct species above, >40% below) Carolinapecten extinct and Pterorytis exterpated

Waccamaw Fm., Caloosahatchee Fm., and equivalents (~2.4-1.8 MYA) Shell hash with sand
Chowan River Fm. and equivalents (~2.8-2.6 MYA) Shell hash with sand

Faunal Turnover (50-70% extinct above, 80-90% below)–Chesapecten and Ecphora extinct

Yorktown Fm., Goose Creek Limestone Jackson Bluff Fm., Tamiami Fm., and equivalents (~3.2-4.4 MYA) Shelly Mud, Shelly Sand, Limestone.
Eastover Fm. and equivalents (~6-8 MYA) Limestone
St. Marys Fm. and equivalents (~11.7-12.5 MYA) Limestone
Pungo River Fm., Calvert Fm. & Choptank Fm., and equivalents (~13-19 MYA) Phosphatic shell hash, Limestone
Chipola Fm. and equivalents (~20-23 MYA) Chesapecten and Ecphora appear sandy shell hash or limestone
Belgrade Fm. and equivalents (~23-25 MYA) Limestone
River Bend Fm. and equivalents (~25-30 MYA) Limestone
Castle Hayne Fm. and equivalents (~34-44 MYA) Limestone
Congaree Fm., Nanjomoy Fm., OIdsmar Limestone, and equivalents (~43-55 MYA) Limestone
Beaufort Group, Black Mingo Group, and equivalents (~56-65 MYA) Limestone

K-T Boundary Exogyra, ammonites, and mosasaurs extinct

Peedee Fm. and equivalents (~65-71 MYA) Clayy Mud, some mudstone

Faunal succession matching with radiometric dates, coherent temporal ranges of taxa across the globe, and partial induration of multiple layers are rather unlikely without large time spans.