Answer:
plz mark brainly
Explanation:
Silicic is an adjective. It is used to describe Magma or Igneous rock. Magma or Igneous rock are rich in silica.Magma is a molten or semi-molten material from which all igneous rocks are derived. It is found beneath the surface of the earth in molten or semi-molten form. When it erupts from a volcano in the form of lava, it flows down, gets cooler and become solid as a rock.Silicic rock usually consists of 63 % of silica. Two common and famous silicic rocks are Granite and Rhyolite.So it is clear from the above given detail that Option a is correct option. Its location is likely underneath an ocean or a mountain. :D :)
Answer:
Stretching from Canada to Mexico, the
✔ Rockies
are the longest mountain range in the United States.
The Rio Grande, Missouri, and Mississippi are major
✔ rivers
in the United States.
The United States is bordered by the
✔ Atlantic Ocean
to its east.
Explanation:
1. B
2. C
3. B
The graphic below depicts the approximate location of marine magnetic anomalies in relation to mid-ocean ridges. Canada Crest of Juan de Fuca Ridge in the United States Crest of Ridge MIIN is that they appear in stripes that are offset along transform faults and parallel mid-ocean ridges.
<h3>What are marine magnetic anomalies?</h3>
An alteration in the strength of the Earth's magnetic field brought on by the magnetism of ocean floor rocks is known as a marine magnetic anomaly. Typically, marine magnetic anomalies make up 1% of the total geomagnetic field strength. The anomalies that surround mid-ocean ridges exhibit a recognisable pattern, according to magnetic measurements over the oceans. They consist of a sequence of stripes that run perpendicular to each ridge, formed by positive and negative anomalies in the magnetic field's strength. They frequently have symmetry about the ridge's axis.
<h3>Why are magnetic anomalies important?</h3>
Together, magnetic anomalies serve as the primary method for dating oceanic basins and create the groundwork for reconstructions of the earth's plates, which set significant limits on how the lithosphere, biosphere, hydrosphere, cryosphere, and global climate developed. The magnetometer, which can monitor the Earth's magnetic field and find changes brought on by magnetic anomalies, is generally considered to be the most important piece of measurement equipment.
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<h2>
Answer: Law of Superposition
</h2>
The <u>law of superposition</u> related to the strata in geology (also called Steno's Law) states that <em>"sediment layers are deposited in a temporal sequence, in which the oldest are in a position inferior to the most recent"
</em>
This principle was initially proposed in the 11th century by the Persian geologist Ibn Sina, and was first proposed as a law in the 17th century by the Danish scientist Nicolás Steno.
Answer:
<em>There are six physiographic regions in India and these are:</em>
- <em>Northern</em>
- <em>North-eastern Mountain</em>
- <em>Northern Plain</em>
- <em>Peninsular Plateau</em>
- <em>Indian Desert</em>
- <em>Coastal Plains</em>
- <em>Islands.</em>