Do you agree with these statements?

[Philip Bruce Heywood]

I've never heard this, have you got a source?

Greetings, Kylie, The Cambrian system is standout remarkable and unique in many ways. As in some ways are the strata immediately underlaying it.

I quickly grabbed something off the 'net which although decades old as far as I know has not been altogether superseded by new information. To obtain believable radiometric dates from that far back requires volcanics and the volcanic deposit to be useful must be in a stratigraphic configuration which results in the date having meaning for other strata of the system. Below, we learn that in 2005 the only likely certainty age-wise was the absolute top and bottom of the system. I have not heard of that changing but it may have done so.

The remarkable shales in which are preserved even brains and eyes, are rare geologic features -- excepting in the Cambrian. Which to my knowledge can not at this stage be radiometrically dated. Cambrian 'explosion'? Time scale? Close the eyes and make a stab?

Hughes and Heim, 2005, Encycloepedia of Geology. Quote:
"The Namibian sequence, which has the best paleontological constraints, suggests an age close to 540 Ma for base of the Cambrian, whereas the Oman sequence, which probably has better radiometric control, suggests 541 Ma. The two ages overlap in their uncertainty brackets, indicating good control on the age of this important stratigraphic boundary. Bowring and Schmitz (2003) regarded the Oman data as providing the best constraints on the age of the boundary. Pending further information, we regard 541.0 ± 0.63 Ma to be the maximum age for the Ediacaran/Cambrian boundary and for the base of the Paleozoic and Phanerozoic. The difference between the age of the top of the Cambrian Period (i.e. of the beginning of the Ordovician) at 485.4 Ma, and the bottom, 541.0 Ma, gives 55.6 myr for the duration of the period."

 

[Subduction Zone]

I've never heard this, have you got a source?

Greetings, Kylie, The Cambrian system is standout remarkable and unique in many ways. As in some ways are the strata immediately underlaying it.

I quickly grabbed something off the 'net which although decades old as far as I know has not been altogether superseded by new information. To obtain believable radiometric dates from that far back requires volcanics and the volcanic deposit to be useful must be in a stratigraphic configuration which results in the date having meaning for other strata of the system. Below, we learn that in 2005 the only likely certainty age-wise was the absolute top and bottom of the system. I have not heard of that changing but it may have done so.

The remarkable shales in which are preserved even brains and eyes, are rare geologic features -- excepting in the Cambrian. Which to my knowledge can not at this stage be radiometrically dated. Cambrian 'explosion'? Time scale? Close the eyes and make a stab?

Hughes and Heim, 2005, Encycloepedia of Geology. Quote:
"The Namibian sequence, which has the best paleontological constraints, suggests an age close to 540 Ma for base of the Cambrian, whereas the Oman sequence, which probably has better radiometric control, suggests 541 Ma. The two ages overlap in their uncertainty brackets, indicating good control on the age of this important stratigraphic boundary. Bowring and Schmitz (2003) regarded the Oman data as providing the best constraints on the age of the boundary. Pending further information, we regard 541.0 ± 0.63 Ma to be the maximum age for the Ediacaran/Cambrian boundary and for the base of the Paleozoic and Phanerozoic. The difference between the age of the top of the Cambrian Period (i.e. of the beginning of the Ordovician) at 485.4 Ma, and the bottom, 541.0 Ma, gives 55.6 myr for the duration of the period."

Lets go over radiometric dating. There are two sorts of dating in geology. Relative dating came first. Before we had radiometric dating we only had relative dating. We could tell which rocks were older than others based upon the order that the were deposited. Early geologists also observed that specific fossils were found in specific layers. So we could get a relative date of a stratum by the fossils in them.

They could also make estimates based on how long those sorts of layers take to form today. Of course there are countless layers missing so those were always minimum ages, but even those were enough to place an age on the Earth that ended up refuting the Flood story.

Now we can move onto radiometric dating. The shales themselves cannot be dated, but there will be areas where there is a layer of volcanic ash. Or a layer of basalt. Those can be dated. That gives us a date for that particular site at that particular layer. The fossils above and below (which especially in the case of volcanic ash were the same fossils) allow that particular ensemble of fossils to be dated. We can date specific layers that way. The Earth is big, and though not occurring everywhere at the same time, geologists were able to build up a record of individual dates this way so that now the fossils of any layer will correlate to a particular ash layer that has been dated.

Any questions?

 

[AV1611VET]

... geologists were able to build up a record of individual dates ...

After how many tries?

... this way so that now the fossils of any layer will correlate to a particular ash layer that has been dated.

In other words, computers are programed to do this correlating for them?

 

[Subduction Zone]

After how many tries?In other words, computers are programed to do this correlating for them?

No, if the pattern did not exist in reality it would not show up when tested.

Can you ask proper questions? That means questions without false assumptions? If you can do so I will respond. If you have a false assumption I will point out your error and say "Try again".

 

[Jok]

Well, in the past there were sever species of hominids of various intelligence and technological ability...

Did all of them show greater creative intelligence from any non-human specie today? Are we talking about making tools, cave inscriptions, and making fire?

then there was only one left. With the barest traces of limited inter breeding as the legacy of the extinct varieties.

Is there a dominant theory on why we won out, like did it have more to do with competition between us, or just harsh conditions of nature that caused the others to go extinct?

 

[Speedwell]

Did all of them show greater creative intelligence from any non-human specie today? Are we talking about making tools, cave inscriptions, and making fire?

Is there a dominant theory on why we won out, like did it have more to do with competition between us, or just harsh conditions of nature that caused the others to go extinct?

Undoubtedly we exterminated them.

 

[Jok]

Undoubtedly we exterminated them.

I wasn’t sure because of how big the world is and how small global population was back then. But I guess that would suggest that these small populations were highly concentrated in very few locations.

 

[Speedwell]

I wasn’t sure because of how big the world is and how small global population was back then. But I guess that would suggest that these small populations were highly concentrated in very few locations.

Neanderthal extinction - Wikipedia

 

[Subduction Zone]

I wasn’t sure because of how big the world is and how small global population was back then. But I guess that would suggest that these small populations were highly concentrated in very few locations.

Neanderthals are well known, they left quite a few remains. But another species that died out even more recently were the Denisovans. They were found in much of Asia but the last were found in New Guinea. The evidence for them is based more upon DNA than fossils.

Denisovan - Wikipedia).

 

[AV1611VET]

Neanderthals are well known, they left quite a few remains.

Deuteronomy 28:59 Then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

 

[Subduction Zone]

Deuteronomy 28:59 Then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

Nope. Try again.

Do you even know what we are discussing?

 

[Kylie]

Not to the point where they are no longer zebras.

What specifically did you mean by "the herd" in Question 7?

If you're using this thread as an example of macroevolution, then Question 7 will never get asked, as there will come a time when the zebras reach their quota of mutations and go extinct.

There's no evidence that there's a quota of mutations for any life form.

Please provide evidence - VALID evidence - to support this claim, or withdraw it.

 

[Shemjaza]

Did all of them show greater creative intelligence from any non-human specie today? Are we talking about making tools, cave inscriptions, and making fire?

Definitely tools, fire and probably clothes.

Neanderthals even had ritual burial practices and evidence of trade.

Is there a dominant theory on why we won out, like did it have more to do with competition between us, or just harsh conditions of nature that caused the others to go extinct?

No one knows for sure, but the idea that seems likely is that the North African Homo sapiens were faster at breeding, more innovative with their tools and less specialised to the changing ice age environment.

That's the explanation for why the Neanderthals went extinct.

Exactly what got the Denesova, Erectus and Florensus is unknown. But the more clever and adaptable Homo sapiens might have just driven them off the good territory til they were in less then ideal environments and slowly died out.

 

[SelfSim]

Deuteronomy 28:59 Then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

Bit nasty to call any plague 'wonderful', no? Whatever were they (was He?) thinking?

 

[Shemjaza]

Deuteronomy 28:59 Then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

I think it's a real stretch to interpret "wonderful plague" as "thousands of subtle genetic variations identical to eons of independent genetic isolation with a common theme of a extreme cold weather environment."

 

[AV1611VET]

Bit nasty to call any plague 'wonderful', no?

Warning: The Surgeon General Has Determined That Cigarette Smoking Is Dangerous To Your Health

 

[AV1611VET]

I think it's a real stretch to interpret "wonderful plague" as "thousands of subtle genetic variations identical to eons of independent genetic isolation with a common theme of a extreme cold weather environment."

Luke 17:32 Remember Lot's wife.

 

[SelfSim]

Warning: The Surgeon General Has Determined That Cigarette Smoking Is Dangerous To Your Health

Never heard of the Surgeon General referencing personal 'wonderment' as an effect of giving up smoking?

 

[AV1611VET]

Never heard of the Surgeon General referencing personal 'wonderment' as an effect of giving up smoking?

No, but I have heard of postpositive adjectives.

 

[Shemjaza]

Luke 17:32 Remember Lot's wife.

Got blasted into salt for disobedience. Not really the same thing.