Which geologic feature is composed of the youngest crustal bedrock
Which geologic feature is composed of the oldest crustal bedrock?
In 2008, geologists announced that a swath of exposed bedrock in the Canadian province of Quebec was the oldest place on the Earths surface. The crust on the Nuvvuagittuq greenstone belt, on the eastern shore of Hudson Bay, is 4.28 billion years old, dating to when the Earth was still cooling from its formation!
Which of the given geologic feature is the youngest?
The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault cuts through all three sedimentary rock layers (A, B, and C) and also the intrusion (D). So the fault must be the youngest feature.
What is the Earth’s crustal bedrock at the Mid-Atlantic Ridge composed of?
Earth’s crustal bedrock at the Mid-Atlantic Ridge is composed mostly of basalt, with a density of 2.7 g/cm3 1.
What is bedrock How is bedrock helpful to trees?
(iv) The bedrock can be defined as the hard layer of solid rock which does not allow water to seep through it. Thus it holds the water and minerals in it. … (vii) This layer is important to the trees as it provides water and minerals for the growth and development of the plants.
What is beneath bedrock?
What layer is after bedrock? Below the upper crust where bedrock is found, the next layer down is the upper mantle. This is rock which is in a fluid state nearer the super-hot core. The mantle actually makes up the majority of the Earth’s volume.
Which surface feature was produced by crustal movements?
tectonic landform, any of the relief features that are produced chiefly by uplift or subsidence of the Earth’s crust or by upward magmatic movements. They include mountains, plateaus, and rift valleys.
Where are the hottest crustal temperatures found?
Temperature Range:
On average, the surface of the Earth’s crust experiences temperatures of about 14°C. However, the hottest temperature ever recorded was 70.7°C (159°F), which was taken in the Lut Desert of Iran as part of a global temperature survey conducted by scientists at NASA’s Earth Observatory.
What are the most likely geologic ages of volcanoes B and D?
What are the most likely geologic ages of volcanoes B and D? (1) B is 5 million years old and D is 12 million years old.
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59.
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59.
| Granitic bedrock | |
|---|---|
| Basaltic bedrock | |
| Texture: | Density: |
| – fine | – high density |
| – vesicular or nonvesicular | – 3.0 g/cm3 |
What is the direction of crustal movement of the Indian Australian plate?
In addition, the scientists theorized that the lower part of the plate (Australian) is moving counterclockwise in relation to the upper part of the plate (Indian).
Which present day geological feature in Nepal resulted from this collision?
The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.
What is the best evidence of crustal uplift?
The best evidence of crustal uplift would be provided by…? Marine fossils in the Rocky Mountains, because marine fossils are found in water, so when they are in areas of high elevation that indicates that the crust has been uplifted.
Is the Eurasian Plate convergent or divergent?
The Eurasian tectonic plate is one of the largest on Earth, spanning all of Asia and Europe. Though complex, the active tectonics along the borders of the plate can be roughly summarized by divergent boundaries to the west/northwest, and convergent boundaries to the east/southeast.
Is the Antarctic plate oceanic or continental?
The Antarctic Plate includes continental crust making up Antarctica and its continental shelf, along with oceanic crust beneath the seas surrounding Antarctica.
Is the Eurasian Plate oceanic or continental?
The Eurasian Plate is an oceanic plate and a continental plate. The oceanic part of the plate is in the northwest where it is bordered by the Gakkel…
What geologic feature is produced by the divergence of the Eurasian Plate and North American plate?
The Mid Atlantic Ridge
The Mid Atlantic Ridge, like other ocean ridge systems, has developed as a consequence of the divergent motion between the Eurasian and North American, and African and South American Plates.
What type of boundary is the Antarctic plate?
divergent plate boundaries
Today, about 95% of the Antarctic plate is surrounded by divergent plate boundaries: the Southwest Indian Ridge, the Southeast Indian Ridge, and the American-Antarctica Ridge.
What minor plate is found below the Eurasian Plate?
The southerly side is a boundary with the African Plate to the west, the Arabian Plate in the middle and the Indo-Australian Plate to the east.
What crustal features are created from divergent plate boundaries?
Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.
Which geologic feature is formed in the divergent plate boundary?
A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.
What type of plate is Eurasian and Philippine plate?
3 show that the segments of the Philippine-Eurasia plate boundaries are different with each other though they are all convergent boundaries. The interaction between the plates could be discussed one by one in four parts: the Nankai trough, the Ryukyu trench, the Tanwan area, and the Philippine islands.