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  • 02.03.2019
  • by Kagul

Dating of the Seafloor

Geology 13 (The Ocean Floor)

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By measuring the amount of remaining radioactive elements and daughter products in the seafloor, scientists can determine when the magma crystallized, and thus know the absolute age of the seafloor.

Skip to main content. Climate Sea Levels Why will sea level rise not be the same everywhere? How can we date corals? Geology and Tectonics Geology How do we know the age of the seafloor? Why is the seafloor so recent and the continental crust so old? Where do we find the oldest continental rocks and the oldest seafloor?

What are the different types of rocks? What is a fossil and what are they used for? What are hydrothermal vents, and why do we find them along mid-ocean ridges? Seismology What is a seismic wave?

Dating the Ocean Floor: 1. The mystery of ocean rifts. A rift runs down the middle of the Atlantic. This underwater mountain range spans the globe, like the. To confirm the ages obtained with magnetic records, and get an absolute age of the seafloor, scientists use the radioactive dating technique. When the lava. Dating ocean floor, faq on earth sciences. You are here. As rocks crystallize from lava at the ridges, they literally record the magnetic field of the Earth at the time.

What is the difference between body waves and surface waves? And between P-waves and S-waves?

Few realize it but these 'dates' were not arrived at by direct measurements (of actual drift) but by radiometric dating of ocean bottom rocks. In other words, since .

Why can't S-waves travel through liquids? How far can seismic waves reach? Why do P-waves travel faster than S-waves? Why is the interior of the Earth hot?

What is the magnetic field of the Earth? Earthquakes and Faults Why do tectonic plates move? Brief history of the plate tectonics theory Before colliding with Asia, where was India? What is an earthquake?

What is the highest magnitude an earthquake can reach? What are the biggest historical earthquakes? Why do earthquakes happen in clusters? Where are earthquakes expected in the world, especially in Asia? What is a supercontinent? Are all the faults on Earth active? How can human activities cause climate change? Why do urbanisation and deforestation make flooding more likely? Earthquake Hazards Is Singapore threatened by earthquakes? Can we predict earthquakes?

Why does a building on solid bedrock resist better to an earthquake than a building on sediment or reclaimed land? Why does a building with base isolation resist better to an earthquake than a building without base isolation? Kilauea on the island of Hawaii. This allowed scientists to see whether or not there was any relationship between the radiometric "age" of the sample versus the depth at which the sample was collected.

Dating the Ocean Floor: 1. The mystery of ocean rifts

By doing this it was discovered that there is a relationship between the radiometric "age" vs. This means that the million-year date for the oldest ocean bottom rocks is virtually meaningless. The answer to this question cannot be "proven" in a scientific sense because we can't go back in time to observe the splitting up of the continents.

And since it has not been proven that the continents are still separating at the Mid-Atlantic Ridge it is impossible to know how long it took. So How Long did it Take? Since many creationists both scientists and non-scientists claim that the earth is less than 10, years old, the question that needs to be addressed is whether or not there is any evidence to suggest that this event took place rapidly within the recent past.

Dating the Ocean Floor: 4. The ocean as a tape recorder

For example, Genesis tells us that:. Some have said that this verse only applies to the spreading out of mankind from the Tower of Babel.

Video from Episode 2 "The Deep" of the BBC documentary Earth Story showing ocean floor spreading out from an ocean ridge. As it spreads, it records the. The different dating systems are calibrated to one another: dates assigned to the seafloor sediments are used to date the ice cores, and vice. But researchers in the Mediterranean Sea have found a chunk of ocean floor that may be million years old, dating back to the creation of.

This is certainly a possibility; however, it is also possible that it is talking about the literal break-up of the "earth" itself. For those who don't believe the Bible the answer becomes more difficult to "prove.

Lets look at some of this evidence. Even the crystalline structure displays little, if any, stretching of the individual sand grains -- thus strongly implying that they were bent while the sediments were still wet, and before they had time to harden.

And since this hardening would only take from perhaps one hundred to a thousand years, this strongly implies that something caused these massive sedimentary rock layers to become bent within a relatively short time after being laid down.

This also implies that the layers themselves were deposited rather rapidly i. Such facts indicate that these trees were buried catastrophically, or before they had time to decay.

In some cases they are more than 20 feet long. Links to other sites are provided in the text and at the end of the each article. Clastic Dikes According to Roth, "a clastic dike is a cross cutting body of sedimentary material which has been intruded into a foreign rock mass. The process of formation of a clastic dike is analogous to wet sand oozing up between ones toes, but on a much larger scale. Clastic dikes present a problem to the "millions of years" mindset of evolution in that "millions of years" older sediments that should have been rock-hard for "millions of years" are found intruding up into overlying younger ones while still in a plastic state.

This presents a profound and puzzling question:. What took these older sediments so long to become hard? One would think that million years would be more than enough time to turn massive sand-laden sediments into sandstone, 10, 11, 12 yet these were still in a wet and plastic state when an earth movement caused them to be forced up into "younger" sediments. Such things place serious strain on the evolutionary method of "dating" rock formations. They also provide us with strong evidence that massive amounts of sediments were laid down rapidly, and suggest that the Earth isn't very old at all.

Unpetrified Tree Trunks On Axel Heiberg and Ellesmere Islands, in Northern Canada, numerous large tree stumps and fallen tree trunks have been found at or just below the earth's surface.

How did these trees get there? And more importantly, when did they get there? Evolutionists claim that they are leftover remnants of numerous forests which inhabited this area million years ago. Helens during its eruption.

And although the trees on these two islands are frozen for most of the year, each summer the snow melts and for several months the temperature reaches into the 70 degree F.

The oceanic crust is younger than the continental crust, rarely reaching Therefore, seafloor dating isn't that useful for studying plate motions. Dating the young ocean floor. David M. Christie Batiza, R., Duncan, R. A. & Janecky, D. Dating Young MORB, Workshop Rep. (JOI Inc. Dating of the Seafloor. Methods to date the seafloor: Fossils--these give the age of the sediment layer enclosing them. The lowest fossils, just.

I mention this because warm temperatures allow decomposition to take place much more rapidly. Taken together, the evidence suggests that these trees were uprooted via a major catastrophe and transported by water and buried at different depths -- most likely within the pastyears -- otherwise they would have decayed long ago.

Magnetic Ocean Bottom Evidence Another piece of evidence to the continental drift puzzle is the existence of magnetic imprints in ocean bottom rocks on both sides of the Mid-Atlantic ridges. These suggest that the earth's magnetic field may have oscillated back and forth many times when the continents were spreading apart.

This evidence was collected by towing magnetometers along the ocean bottom and by drilling holes into the rocks at regular intervals away from the ocean ridges. The data shows that the reversals were randomly distributed both horizontally along and vertically down these rock holes.

This finding was unexpected and implies that whatever mechanism caused the continents to split was much more complex than old earth models had predicted. Kurt Wise goes into more detail on this in his book on the age of the Earth.

Dating the ocean floor

Wise also shows how the actual evidence supports a Catastrophic rapid Plate Tectonics model better than a Conventional slow one. A portion is quoted below:.

Geology 13 (The Ocean Floor)

And it's likely that there were always pockets of the ocean floor that stayed hot well into the next reversal period. The young-age creationist would then predict that the entire ocean floor should be magnetically mottled, with adjacent pockets throughout the basalt having opposite magnetic orientations.

Such mottling does seem to exist in every one of the hundreds of cores made in the basalts of the ocean floor. This is consistent with young-age creation theory and contrary to alternative theories. See also: The 'Principle of Least Astonishment'by Andrew Snelling -- to learn more on how fast the field could flip-flop based on actual measurements.


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