what evidence did the deep sea drilling project find about the dates of rocks in the ocean basins?

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What Evidence Did The Deep Sea Drilling Project Find About The Dates Of Rocks In The Ocean Basins??

What evidence did the Deep Sea Drilling Project find about the dates of rocks in the ocean basins? The ocean basins are relatively young; most ocean basin rocks and sediments are Cretaceous or younger in age. Which of the following was never proposed as evidence supporting the existence of Pangaea?

What was the name of the fossil flora that grow on Pangea during the Late Paleozoic?

Glossopteris, genus of fossilized woody plants known from rocks that have been dated to the Permian and Triassic periods (roughly 300 to 200 million years ago), deposited on the southern supercontinent of Gondwana. Glossopteris occurred in a variety of growth forms.

Which of the following pieces of evidence supports the plate tectonic theory?

There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.

What causes the volcanoes and deep valleys of East Africa?

What causes the volcanoes and deep valleys of East Africa? … They are young, active volcanoes built on a continental margin above a sinking slab of oceanic lithosphere.

What process is evident at oceanic trenches?

What process is evident at oceanic trenches? Sinking of oceanic lithosphere into the mantle at a subduction zone.

Which of the following was never proposed as evidence supporting the existence of Pangaea?

Cards
Term _______was the flora that was widely distributed throughout the once contiguous,, late Paleozoic Southern Hemisphere landmass.Definition Glossopteris
Term was never proposed as evidence supporting the existence of Pangaea.Definition Island of Proterozoic rocks along the Mid-Atlantic Ridge

Which piece of fossil evidence would suggest the Earth’s plates are moving?

Fossil Evidence

One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents, suggesting that the continents were once joined.

What evidence supports plate tectonics quizlet?

Earthquakes and volcanic activity are also evidence of plate tectonics.

Which of the following pieces of evidence supports the plate tectonics theory quizlet?

Which of the following pieces of evidence supports the plate tectonic theory? The stripe patterns of high- and low-intensity magnetism are mirror images on both sides of an oceanic ridge. Which of the following is a feature of a divergent plate boundary?

How do earthquakes prove plate tectonics?

Where plate pull apart, slide by each other or collide, there is tectonic activity manifested as earthquakes. The great majority of seismicity on the planet occurs at plate boundaries, although intra-plate seismicity can occur as well when stresses build up in the plate.

What evidence indicated scientists that the continents were once connected?

Alfred Wegener is credited with developing the continental drift hypothesis. What was probably the first evidence that led some to suspect the continents were once connected? The puzzle-like fit of the continents, especially Africa and South America.

What processes are going on in Eastern Africa explain what is meant by a triple junction?

In East Africa, spreading processes have already torn Saudi Arabia away from the rest of the African continent, forming the Red Sea. The actively splitting African Plate and the Arabian Plate meet in what geologists call a triple junction, where the Red Sea meets the Gulf of Aden.

Why are volcanoes mostly found at places where Continents meet the seas?

This is because the Earth’s crust is broken into a series of slabs known as tectonic plates. … Although most of the active volcanoes we see on land occur where plates collide, the greatest number of the Earth’s volcanoes are hidden from view, occurring on the ocean floor along spreading ridges.

What are the evidences of plate movements?

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species.

What are deep ocean trenches associated with?

Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones—that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.

What causes the motion of oceanic oceanic?

The most obvious examples are the waves and ripples on the water’s surface that are generated by wind or the ocean currents that are due to tides. … There currents are set in motion by variations in water density caused by differences in temperature and salinity, a process called convection.

Where would you drill to recover samples of the oldest oceanic crust?

chapter 3 geol
QuestionAnswer
All of the following are evidence supporting the theory of plate tectonics except for ________.changes in the Moon’s orbit due to shifting plates
_______ was never proposed as evidence supporting the existence of Pangaea.Islands of Precambrian rocks along the Mid-Atlantic Ridge

How the Hawaiian island chain provides evidence in support of plate tectonics?

Explain how the Hawaiian Island chain provides evidence in support of Plate Tectonics. The combined processes of magma formation, eruption, and continuous movement of the Pacific Plate over the stationary hot spot have left the trail of volcanoes across the ocean floor that we now call the Hawaiian-Emperor Chain.

Why did scientists not accept the continental drift hypothesis?

The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.

What are 5 pieces of evidence that support continental drift?

Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.

How does science prove that the continents are drifting?

Seafloor spreading is most dynamic along giant underwater mountain ranges known as mid-ocean ridges. As the seafloor grows wider, the continents on opposite sides of the ridge move away from each other. … These processes were the main geologic forces behind what Wegener recognized as continental drift.

What is paleontological evidence?

Paleontological Evidence

Fossils are the geological remains and scientific traces of organisms in the past excavated from the soil. … An example of paleontological evidence is the presence of rings on the surface of an oyster which represents the number of years of its life.

How do rock samples collected from the sea floor provide evidence of tectonic plate movement?

As upwelling of magma continues, the plates continue to diverge, a process known as seafloor spreading. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre—important evidence in favour of this process.

Which of the following is most recent evidence of plate tectonics?

Volcanic activity and sea-floor spreading at the mid-ocean ridges are the most recent evidence of plate tectonics.

Which of the following provides evidence that supports the continental drift theory?

The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.

Which is a key piece of evidence for sea floor spreading?

The theory of seafloor spreading states that new ocean crust is continually being formed, and that this crust is slowly carried away from its point of origin over a period of time. The study of the repeated reversal of the Earth’s magnetic poles over time has provided convincing evidence of seafloor spreading.

Which of these is evidence of Pangaea?

The rock formations of eastern North America, Western Europe, and northwestern Africa were later found to have a common origin, and they overlapped in time with the presence of Gondwanaland. Together, these discoveries supported the existence of Pangea.

Are all earthquakes possibly caused by volcanic activity?

Sometimes, yes. A few large regional earthquakes (greater than magnitude 6) are considered to be related to a subsequent eruption or to some type of unrest at a nearby volcano. However, volcanoes can only be triggered into eruption by nearby tectonic earthquakes if they are already poised to erupt.

What does plate tectonic theory predict about the distribution of volcanoes and earthquakes?

What does plate tectonic theory predict about the distribution of volcanoes and earthquakes? They should be evenly distributed throughout the earth. They should occur primarily along plate boundaries.

How does plate tectonic theory explain the distribution of earthquakes and volcanoes?

Where plates come into contact, energy is released. Plates sliding past each other cause friction and heat. Subducting plates melt into the mantle, and diverging plates create new crust material. Subducting plates, where one tectonic plate is being driven under another, are associated with volcanoes and earthquakes.

What are four pieces of evidence for continental drift?

The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones’ locations.

What was the first evidence that led Wegener to suspect the continents were once connected?

Wegener’s first piece of evidence was that the coastlines of some continents fit together like pieces of a jigsaw puzzle. People noticed the similarities in the coastlines of South America and Africa on the first world maps, and some suggested the continents had been ripped apart [3].

What evidence can prove that two mountain ranges separated by ocean?

Evidence for Continental Drift
  • Identical rocks, of the same type and age, are found on both sides of the Atlantic Ocean. …
  • Mountain ranges with the same rock types, structures, and ages are now on opposite sides of the Atlantic Ocean.

What unique event is occurring between the Arabian Plate and the African plate?

The Arabian Plate is rifting away from the African plate along an active divergent ridge system, to form the Red Sea and Gulf of Aden.

Water and Stone Putney Geology

UCI ESS3 Week 1, part 1 lecture

The Oceanic Crust

Seafloor Spreading

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